H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 1 | #ifndef _ASM_X86_PARAVIRT_H |
| 2 | #define _ASM_X86_PARAVIRT_H |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 3 | /* Various instructions on x86 need to be replaced for |
| 4 | * para-virtualization: those hooks are defined here. */ |
Jeremy Fitzhardinge | b239fb2 | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 5 | |
| 6 | #ifdef CONFIG_PARAVIRT |
Jeremy Fitzhardinge | 54321d9 | 2009-02-11 10:20:05 -0800 | [diff] [blame] | 7 | #include <asm/pgtable_types.h> |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 8 | #include <asm/asm.h> |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 9 | |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 10 | /* Bitmask of what can be clobbered: usually at least eax. */ |
Glauber de Oliveira Costa | 21438f7 | 2008-01-30 13:32:09 +0100 | [diff] [blame] | 11 | #define CLBR_NONE 0 |
| 12 | #define CLBR_EAX (1 << 0) |
| 13 | #define CLBR_ECX (1 << 1) |
| 14 | #define CLBR_EDX (1 << 2) |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 15 | #define CLBR_EDI (1 << 3) |
Glauber de Oliveira Costa | 21438f7 | 2008-01-30 13:32:09 +0100 | [diff] [blame] | 16 | |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 17 | #ifdef CONFIG_X86_32 |
| 18 | /* CLBR_ANY should match all regs platform has. For i386, that's just it */ |
| 19 | #define CLBR_ANY ((1 << 4) - 1) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 20 | |
| 21 | #define CLBR_ARG_REGS (CLBR_EAX | CLBR_EDX | CLBR_ECX) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 22 | #define CLBR_RET_REG (CLBR_EAX | CLBR_EDX) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 23 | #define CLBR_SCRATCH (0) |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 24 | #else |
| 25 | #define CLBR_RAX CLBR_EAX |
| 26 | #define CLBR_RCX CLBR_ECX |
| 27 | #define CLBR_RDX CLBR_EDX |
| 28 | #define CLBR_RDI CLBR_EDI |
| 29 | #define CLBR_RSI (1 << 4) |
Glauber de Oliveira Costa | 21438f7 | 2008-01-30 13:32:09 +0100 | [diff] [blame] | 30 | #define CLBR_R8 (1 << 5) |
| 31 | #define CLBR_R9 (1 << 6) |
| 32 | #define CLBR_R10 (1 << 7) |
| 33 | #define CLBR_R11 (1 << 8) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 34 | |
Glauber de Oliveira Costa | 21438f7 | 2008-01-30 13:32:09 +0100 | [diff] [blame] | 35 | #define CLBR_ANY ((1 << 9) - 1) |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 36 | |
| 37 | #define CLBR_ARG_REGS (CLBR_RDI | CLBR_RSI | CLBR_RDX | \ |
| 38 | CLBR_RCX | CLBR_R8 | CLBR_R9) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 39 | #define CLBR_RET_REG (CLBR_RAX) |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 40 | #define CLBR_SCRATCH (CLBR_R10 | CLBR_R11) |
| 41 | |
Glauber de Oliveira Costa | 21438f7 | 2008-01-30 13:32:09 +0100 | [diff] [blame] | 42 | #include <asm/desc_defs.h> |
Glauber de Oliveira Costa | 21438f7 | 2008-01-30 13:32:09 +0100 | [diff] [blame] | 43 | #endif /* X86_64 */ |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 44 | |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 45 | #define CLBR_CALLEE_SAVE ((CLBR_ARG_REGS | CLBR_SCRATCH) & ~CLBR_RET_REG) |
| 46 | |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 47 | #ifndef __ASSEMBLY__ |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 48 | #include <linux/types.h> |
Jeremy Fitzhardinge | d4c1047 | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 49 | #include <linux/cpumask.h> |
Jeremy Fitzhardinge | ce6234b | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 50 | #include <asm/kmap_types.h> |
Glauber de Oliveira Costa | 8d94734 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 51 | #include <asm/desc_defs.h> |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 52 | |
Jeremy Fitzhardinge | ce6234b | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 53 | struct page; |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 54 | struct thread_struct; |
Glauber de Oliveira Costa | 6b68f01 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 55 | struct desc_ptr; |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 56 | struct tss_struct; |
Rusty Russell | da181a8 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 57 | struct mm_struct; |
Rusty Russell | 90a0a06 | 2007-05-02 19:27:10 +0200 | [diff] [blame] | 58 | struct desc_struct; |
Jeremy Fitzhardinge | 224101e | 2009-02-18 11:18:57 -0800 | [diff] [blame] | 59 | struct task_struct; |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 60 | |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 61 | /* |
| 62 | * Wrapper type for pointers to code which uses the non-standard |
| 63 | * calling convention. See PV_CALL_SAVE_REGS_THUNK below. |
| 64 | */ |
| 65 | struct paravirt_callee_save { |
| 66 | void *func; |
| 67 | }; |
| 68 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 69 | /* general info */ |
| 70 | struct pv_info { |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 71 | unsigned int kernel_rpl; |
Jeremy Fitzhardinge | 5311ab6 | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 72 | int shared_kernel_pmd; |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 73 | int paravirt_enabled; |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 74 | const char *name; |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 75 | }; |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 76 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 77 | struct pv_init_ops { |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 78 | /* |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 79 | * Patch may replace one of the defined code sequences with |
| 80 | * arbitrary code, subject to the same register constraints. |
| 81 | * This generally means the code is not free to clobber any |
| 82 | * registers other than EAX. The patch function should return |
| 83 | * the number of bytes of code generated, as we nop pad the |
| 84 | * rest in generic code. |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 85 | */ |
Andi Kleen | ab144f5 | 2007-08-10 22:31:03 +0200 | [diff] [blame] | 86 | unsigned (*patch)(u8 type, u16 clobber, void *insnbuf, |
| 87 | unsigned long addr, unsigned len); |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 88 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 89 | /* Basic arch-specific setup */ |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 90 | void (*arch_setup)(void); |
| 91 | char *(*memory_setup)(void); |
Jeremy Fitzhardinge | 6996d3b | 2007-07-17 18:37:03 -0700 | [diff] [blame] | 92 | void (*post_allocator_init)(void); |
| 93 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 94 | /* Print a banner to identify the environment */ |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 95 | void (*banner)(void); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 96 | }; |
| 97 | |
| 98 | |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 99 | struct pv_lazy_ops { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 100 | /* Set deferred update mode, used for batching operations. */ |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 101 | void (*enter)(void); |
| 102 | void (*leave)(void); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 103 | }; |
| 104 | |
| 105 | struct pv_time_ops { |
| 106 | void (*time_init)(void); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 107 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 108 | /* Set and set time of day */ |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 109 | unsigned long (*get_wallclock)(void); |
| 110 | int (*set_wallclock)(unsigned long); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 111 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 112 | unsigned long long (*sched_clock)(void); |
Alok Kataria | e93ef94 | 2008-07-01 11:43:36 -0700 | [diff] [blame] | 113 | unsigned long (*get_tsc_khz)(void); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 114 | }; |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 115 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 116 | struct pv_cpu_ops { |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 117 | /* hooks for various privileged instructions */ |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 118 | unsigned long (*get_debugreg)(int regno); |
| 119 | void (*set_debugreg)(int regno, unsigned long value); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 120 | |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 121 | void (*clts)(void); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 122 | |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 123 | unsigned long (*read_cr0)(void); |
| 124 | void (*write_cr0)(unsigned long); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 125 | |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 126 | unsigned long (*read_cr4_safe)(void); |
| 127 | unsigned long (*read_cr4)(void); |
| 128 | void (*write_cr4)(unsigned long); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 129 | |
Glauber de Oliveira Costa | 4c9890c | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 130 | #ifdef CONFIG_X86_64 |
| 131 | unsigned long (*read_cr8)(void); |
| 132 | void (*write_cr8)(unsigned long); |
| 133 | #endif |
| 134 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 135 | /* Segment descriptor handling */ |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 136 | void (*load_tr_desc)(void); |
Glauber de Oliveira Costa | 6b68f01 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 137 | void (*load_gdt)(const struct desc_ptr *); |
| 138 | void (*load_idt)(const struct desc_ptr *); |
| 139 | void (*store_gdt)(struct desc_ptr *); |
| 140 | void (*store_idt)(struct desc_ptr *); |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 141 | void (*set_ldt)(const void *desc, unsigned entries); |
| 142 | unsigned long (*store_tr)(void); |
| 143 | void (*load_tls)(struct thread_struct *t, unsigned int cpu); |
Jeremy Fitzhardinge | 9f9d489 | 2008-06-25 00:19:32 -0400 | [diff] [blame] | 144 | #ifdef CONFIG_X86_64 |
| 145 | void (*load_gs_index)(unsigned int idx); |
| 146 | #endif |
Glauber de Oliveira Costa | 75b8bb3 | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 147 | void (*write_ldt_entry)(struct desc_struct *ldt, int entrynum, |
| 148 | const void *desc); |
Rusty Russell | 90a0a06 | 2007-05-02 19:27:10 +0200 | [diff] [blame] | 149 | void (*write_gdt_entry)(struct desc_struct *, |
Glauber de Oliveira Costa | 014b15b | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 150 | int entrynum, const void *desc, int size); |
Glauber de Oliveira Costa | 8d94734 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 151 | void (*write_idt_entry)(gate_desc *, |
| 152 | int entrynum, const gate_desc *gate); |
Jeremy Fitzhardinge | 38ffbe6 | 2008-07-23 14:21:18 -0700 | [diff] [blame] | 153 | void (*alloc_ldt)(struct desc_struct *ldt, unsigned entries); |
| 154 | void (*free_ldt)(struct desc_struct *ldt, unsigned entries); |
| 155 | |
H. Peter Anvin | faca622 | 2008-01-30 13:31:02 +0100 | [diff] [blame] | 156 | void (*load_sp0)(struct tss_struct *tss, struct thread_struct *t); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 157 | |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 158 | void (*set_iopl_mask)(unsigned mask); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 159 | |
| 160 | void (*wbinvd)(void); |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 161 | void (*io_delay)(void); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 162 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 163 | /* cpuid emulation, mostly so that caps bits can be disabled */ |
| 164 | void (*cpuid)(unsigned int *eax, unsigned int *ebx, |
| 165 | unsigned int *ecx, unsigned int *edx); |
Jeremy Fitzhardinge | d6dd61c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 166 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 167 | /* MSR, PMC and TSR operations. |
| 168 | err = 0/-EFAULT. wrmsr returns 0/-EFAULT. */ |
Yinghai Lu | b05f78f | 2008-08-22 01:32:50 -0700 | [diff] [blame] | 169 | u64 (*read_msr_amd)(unsigned int msr, int *err); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 170 | u64 (*read_msr)(unsigned int msr, int *err); |
Glauber de Oliveira Costa | c9dcda5 | 2008-01-30 13:31:07 +0100 | [diff] [blame] | 171 | int (*write_msr)(unsigned int msr, unsigned low, unsigned high); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 172 | |
| 173 | u64 (*read_tsc)(void); |
Glauber de Oliveira Costa | b8d1fae | 2008-01-30 13:31:07 +0100 | [diff] [blame] | 174 | u64 (*read_pmc)(int counter); |
Glauber de Oliveira Costa | e5aaac4 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 175 | unsigned long long (*read_tscp)(unsigned int *aux); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 176 | |
Jeremy Fitzhardinge | 2be2998 | 2008-06-25 00:19:28 -0400 | [diff] [blame] | 177 | /* |
| 178 | * Atomically enable interrupts and return to userspace. This |
| 179 | * is only ever used to return to 32-bit processes; in a |
| 180 | * 64-bit kernel, it's used for 32-on-64 compat processes, but |
| 181 | * never native 64-bit processes. (Jump, not call.) |
| 182 | */ |
Jeremy Fitzhardinge | d75cd22f | 2008-06-25 00:19:26 -0400 | [diff] [blame] | 183 | void (*irq_enable_sysexit)(void); |
Jeremy Fitzhardinge | 2be2998 | 2008-06-25 00:19:28 -0400 | [diff] [blame] | 184 | |
| 185 | /* |
| 186 | * Switch to usermode gs and return to 64-bit usermode using |
| 187 | * sysret. Only used in 64-bit kernels to return to 64-bit |
| 188 | * processes. Usermode register state, including %rsp, must |
| 189 | * already be restored. |
| 190 | */ |
| 191 | void (*usergs_sysret64)(void); |
| 192 | |
| 193 | /* |
| 194 | * Switch to usermode gs and return to 32-bit usermode using |
| 195 | * sysret. Used to return to 32-on-64 compat processes. |
| 196 | * Other usermode register state, including %esp, must already |
| 197 | * be restored. |
| 198 | */ |
| 199 | void (*usergs_sysret32)(void); |
| 200 | |
| 201 | /* Normal iret. Jump to this with the standard iret stack |
| 202 | frame set up. */ |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 203 | void (*iret)(void); |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 204 | |
Glauber de Oliveira Costa | e801f86 | 2008-01-30 13:32:08 +0100 | [diff] [blame] | 205 | void (*swapgs)(void); |
| 206 | |
Jeremy Fitzhardinge | 224101e | 2009-02-18 11:18:57 -0800 | [diff] [blame] | 207 | void (*start_context_switch)(struct task_struct *prev); |
| 208 | void (*end_context_switch)(struct task_struct *next); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 209 | }; |
| 210 | |
| 211 | struct pv_irq_ops { |
| 212 | void (*init_IRQ)(void); |
| 213 | |
| 214 | /* |
| 215 | * Get/set interrupt state. save_fl and restore_fl are only |
| 216 | * expected to use X86_EFLAGS_IF; all other bits |
| 217 | * returned from save_fl are undefined, and may be ignored by |
| 218 | * restore_fl. |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 219 | * |
| 220 | * NOTE: These functions callers expect the callee to preserve |
| 221 | * more registers than the standard C calling convention. |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 222 | */ |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 223 | struct paravirt_callee_save save_fl; |
| 224 | struct paravirt_callee_save restore_fl; |
| 225 | struct paravirt_callee_save irq_disable; |
| 226 | struct paravirt_callee_save irq_enable; |
| 227 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 228 | void (*safe_halt)(void); |
| 229 | void (*halt)(void); |
Jeremy Fitzhardinge | fab5842 | 2008-06-25 00:19:31 -0400 | [diff] [blame] | 230 | |
| 231 | #ifdef CONFIG_X86_64 |
| 232 | void (*adjust_exception_frame)(void); |
| 233 | #endif |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 234 | }; |
| 235 | |
| 236 | struct pv_apic_ops { |
Rusty Russell | 13623d7 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 237 | #ifdef CONFIG_X86_LOCAL_APIC |
Zachary Amsden | bbab4f3 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 238 | void (*setup_boot_clock)(void); |
| 239 | void (*setup_secondary_clock)(void); |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 240 | |
| 241 | void (*startup_ipi_hook)(int phys_apicid, |
| 242 | unsigned long start_eip, |
| 243 | unsigned long start_esp); |
Rusty Russell | 13623d7 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 244 | #endif |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 245 | }; |
| 246 | |
| 247 | struct pv_mmu_ops { |
| 248 | /* |
| 249 | * Called before/after init_mm pagetable setup. setup_start |
| 250 | * may reset %cr3, and may pre-install parts of the pagetable; |
| 251 | * pagetable setup is expected to preserve any existing |
| 252 | * mapping. |
| 253 | */ |
| 254 | void (*pagetable_setup_start)(pgd_t *pgd_base); |
| 255 | void (*pagetable_setup_done)(pgd_t *pgd_base); |
| 256 | |
| 257 | unsigned long (*read_cr2)(void); |
| 258 | void (*write_cr2)(unsigned long); |
| 259 | |
| 260 | unsigned long (*read_cr3)(void); |
| 261 | void (*write_cr3)(unsigned long); |
| 262 | |
| 263 | /* |
| 264 | * Hooks for intercepting the creation/use/destruction of an |
| 265 | * mm_struct. |
| 266 | */ |
| 267 | void (*activate_mm)(struct mm_struct *prev, |
| 268 | struct mm_struct *next); |
| 269 | void (*dup_mmap)(struct mm_struct *oldmm, |
| 270 | struct mm_struct *mm); |
| 271 | void (*exit_mmap)(struct mm_struct *mm); |
| 272 | |
Rusty Russell | 13623d7 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 273 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 274 | /* TLB operations */ |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 275 | void (*flush_tlb_user)(void); |
| 276 | void (*flush_tlb_kernel)(void); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 277 | void (*flush_tlb_single)(unsigned long addr); |
Rusty Russell | 4595f96 | 2009-01-10 21:58:09 -0800 | [diff] [blame] | 278 | void (*flush_tlb_others)(const struct cpumask *cpus, |
| 279 | struct mm_struct *mm, |
Jeremy Fitzhardinge | d4c1047 | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 280 | unsigned long va); |
Rusty Russell | da181a8 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 281 | |
Jeremy Fitzhardinge | eba0045 | 2008-06-25 00:19:12 -0400 | [diff] [blame] | 282 | /* Hooks for allocating and freeing a pagetable top-level */ |
| 283 | int (*pgd_alloc)(struct mm_struct *mm); |
| 284 | void (*pgd_free)(struct mm_struct *mm, pgd_t *pgd); |
| 285 | |
| 286 | /* |
| 287 | * Hooks for allocating/releasing pagetable pages when they're |
| 288 | * attached to a pagetable |
| 289 | */ |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 290 | void (*alloc_pte)(struct mm_struct *mm, unsigned long pfn); |
| 291 | void (*alloc_pmd)(struct mm_struct *mm, unsigned long pfn); |
| 292 | void (*alloc_pmd_clone)(unsigned long pfn, unsigned long clonepfn, unsigned long start, unsigned long count); |
| 293 | void (*alloc_pud)(struct mm_struct *mm, unsigned long pfn); |
| 294 | void (*release_pte)(unsigned long pfn); |
| 295 | void (*release_pmd)(unsigned long pfn); |
| 296 | void (*release_pud)(unsigned long pfn); |
Zachary Amsden | c119ecc | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 297 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 298 | /* Pagetable manipulation functions */ |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 299 | void (*set_pte)(pte_t *ptep, pte_t pteval); |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 300 | void (*set_pte_at)(struct mm_struct *mm, unsigned long addr, |
| 301 | pte_t *ptep, pte_t pteval); |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 302 | void (*set_pmd)(pmd_t *pmdp, pmd_t pmdval); |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 303 | void (*pte_update)(struct mm_struct *mm, unsigned long addr, |
| 304 | pte_t *ptep); |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 305 | void (*pte_update_defer)(struct mm_struct *mm, |
| 306 | unsigned long addr, pte_t *ptep); |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 307 | |
Jeremy Fitzhardinge | 08b882c | 2008-06-16 04:30:01 -0700 | [diff] [blame] | 308 | pte_t (*ptep_modify_prot_start)(struct mm_struct *mm, unsigned long addr, |
| 309 | pte_t *ptep); |
| 310 | void (*ptep_modify_prot_commit)(struct mm_struct *mm, unsigned long addr, |
| 311 | pte_t *ptep, pte_t pte); |
| 312 | |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 313 | struct paravirt_callee_save pte_val; |
| 314 | struct paravirt_callee_save make_pte; |
Jeremy Fitzhardinge | 5b8dd1e | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 315 | |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 316 | struct paravirt_callee_save pgd_val; |
| 317 | struct paravirt_callee_save make_pgd; |
Jeremy Fitzhardinge | 5b8dd1e | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 318 | |
| 319 | #if PAGETABLE_LEVELS >= 3 |
Rusty Russell | da181a8 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 320 | #ifdef CONFIG_X86_PAE |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 321 | void (*set_pte_atomic)(pte_t *ptep, pte_t pteval); |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 322 | void (*pte_clear)(struct mm_struct *mm, unsigned long addr, |
| 323 | pte_t *ptep); |
Andi Kleen | 1a1eecd | 2007-02-13 13:26:25 +0100 | [diff] [blame] | 324 | void (*pmd_clear)(pmd_t *pmdp); |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 325 | |
Jeremy Fitzhardinge | 5b8dd1e | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 326 | #endif /* CONFIG_X86_PAE */ |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 327 | |
Jeremy Fitzhardinge | 5b8dd1e | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 328 | void (*set_pud)(pud_t *pudp, pud_t pudval); |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 329 | |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 330 | struct paravirt_callee_save pmd_val; |
| 331 | struct paravirt_callee_save make_pmd; |
Jeremy Fitzhardinge | 5b8dd1e | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 332 | |
| 333 | #if PAGETABLE_LEVELS == 4 |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 334 | struct paravirt_callee_save pud_val; |
| 335 | struct paravirt_callee_save make_pud; |
Eduardo Habkost | 9042219 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 336 | |
| 337 | void (*set_pgd)(pgd_t *pudp, pgd_t pgdval); |
Jeremy Fitzhardinge | 5b8dd1e | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 338 | #endif /* PAGETABLE_LEVELS == 4 */ |
| 339 | #endif /* PAGETABLE_LEVELS >= 3 */ |
Rusty Russell | da181a8 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 340 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 341 | #ifdef CONFIG_HIGHPTE |
| 342 | void *(*kmap_atomic_pte)(struct page *page, enum km_type type); |
| 343 | #endif |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 344 | |
| 345 | struct pv_lazy_ops lazy_mode; |
Jeremy Fitzhardinge | aeaaa59 | 2008-06-17 11:42:01 -0700 | [diff] [blame] | 346 | |
| 347 | /* dom0 ops */ |
| 348 | |
| 349 | /* Sometimes the physical address is a pfn, and sometimes its |
| 350 | an mfn. We can tell which is which from the index. */ |
| 351 | void (*set_fixmap)(unsigned /* enum fixed_addresses */ idx, |
Masami Hiramatsu | 3b3809a | 2009-04-09 10:55:33 -0700 | [diff] [blame] | 352 | phys_addr_t phys, pgprot_t flags); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 353 | }; |
| 354 | |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 355 | struct raw_spinlock; |
| 356 | struct pv_lock_ops { |
| 357 | int (*spin_is_locked)(struct raw_spinlock *lock); |
| 358 | int (*spin_is_contended)(struct raw_spinlock *lock); |
| 359 | void (*spin_lock)(struct raw_spinlock *lock); |
Jeremy Fitzhardinge | 63d3a75 | 2008-08-19 13:19:36 -0700 | [diff] [blame] | 360 | void (*spin_lock_flags)(struct raw_spinlock *lock, unsigned long flags); |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 361 | int (*spin_trylock)(struct raw_spinlock *lock); |
| 362 | void (*spin_unlock)(struct raw_spinlock *lock); |
| 363 | }; |
| 364 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 365 | /* This contains all the paravirt structures: we get a convenient |
| 366 | * number for each function using the offset which we use to indicate |
| 367 | * what to patch. */ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 368 | struct paravirt_patch_template { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 369 | struct pv_init_ops pv_init_ops; |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 370 | struct pv_time_ops pv_time_ops; |
| 371 | struct pv_cpu_ops pv_cpu_ops; |
| 372 | struct pv_irq_ops pv_irq_ops; |
| 373 | struct pv_apic_ops pv_apic_ops; |
| 374 | struct pv_mmu_ops pv_mmu_ops; |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 375 | struct pv_lock_ops pv_lock_ops; |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 376 | }; |
| 377 | |
| 378 | extern struct pv_info pv_info; |
| 379 | extern struct pv_init_ops pv_init_ops; |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 380 | extern struct pv_time_ops pv_time_ops; |
| 381 | extern struct pv_cpu_ops pv_cpu_ops; |
| 382 | extern struct pv_irq_ops pv_irq_ops; |
| 383 | extern struct pv_apic_ops pv_apic_ops; |
| 384 | extern struct pv_mmu_ops pv_mmu_ops; |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 385 | extern struct pv_lock_ops pv_lock_ops; |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 386 | |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 387 | #define PARAVIRT_PATCH(x) \ |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 388 | (offsetof(struct paravirt_patch_template, x) / sizeof(void *)) |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 389 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 390 | #define paravirt_type(op) \ |
| 391 | [paravirt_typenum] "i" (PARAVIRT_PATCH(op)), \ |
Jeremy Fitzhardinge | 42854dc | 2009-03-16 17:24:34 -0700 | [diff] [blame] | 392 | [paravirt_opptr] "i" (&(op)) |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 393 | #define paravirt_clobber(clobber) \ |
| 394 | [paravirt_clobber] "i" (clobber) |
| 395 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 396 | /* |
| 397 | * Generate some code, and mark it as patchable by the |
| 398 | * apply_paravirt() alternate instruction patcher. |
| 399 | */ |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 400 | #define _paravirt_alt(insn_string, type, clobber) \ |
| 401 | "771:\n\t" insn_string "\n" "772:\n" \ |
| 402 | ".pushsection .parainstructions,\"a\"\n" \ |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 403 | _ASM_ALIGN "\n" \ |
| 404 | _ASM_PTR " 771b\n" \ |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 405 | " .byte " type "\n" \ |
| 406 | " .byte 772b-771b\n" \ |
| 407 | " .short " clobber "\n" \ |
| 408 | ".popsection\n" |
| 409 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 410 | /* Generate patchable code, with the default asm parameters. */ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 411 | #define paravirt_alt(insn_string) \ |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 412 | _paravirt_alt(insn_string, "%c[paravirt_typenum]", "%c[paravirt_clobber]") |
| 413 | |
Glauber de Oliveira Costa | 2f485ef | 2008-01-30 13:32:10 +0100 | [diff] [blame] | 414 | /* Simple instruction patching code. */ |
| 415 | #define DEF_NATIVE(ops, name, code) \ |
| 416 | extern const char start_##ops##_##name[], end_##ops##_##name[]; \ |
| 417 | asm("start_" #ops "_" #name ": " code "; end_" #ops "_" #name ":") |
| 418 | |
Jeremy Fitzhardinge | 63f7027 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 419 | unsigned paravirt_patch_nop(void); |
Jeremy Fitzhardinge | 41edafd | 2009-01-28 14:35:02 -0800 | [diff] [blame] | 420 | unsigned paravirt_patch_ident_32(void *insnbuf, unsigned len); |
| 421 | unsigned paravirt_patch_ident_64(void *insnbuf, unsigned len); |
Jeremy Fitzhardinge | 63f7027 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 422 | unsigned paravirt_patch_ignore(unsigned len); |
Andi Kleen | ab144f5 | 2007-08-10 22:31:03 +0200 | [diff] [blame] | 423 | unsigned paravirt_patch_call(void *insnbuf, |
| 424 | const void *target, u16 tgt_clobbers, |
| 425 | unsigned long addr, u16 site_clobbers, |
Jeremy Fitzhardinge | 63f7027 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 426 | unsigned len); |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 427 | unsigned paravirt_patch_jmp(void *insnbuf, const void *target, |
Andi Kleen | ab144f5 | 2007-08-10 22:31:03 +0200 | [diff] [blame] | 428 | unsigned long addr, unsigned len); |
| 429 | unsigned paravirt_patch_default(u8 type, u16 clobbers, void *insnbuf, |
| 430 | unsigned long addr, unsigned len); |
Jeremy Fitzhardinge | 63f7027 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 431 | |
Andi Kleen | ab144f5 | 2007-08-10 22:31:03 +0200 | [diff] [blame] | 432 | unsigned paravirt_patch_insns(void *insnbuf, unsigned len, |
Jeremy Fitzhardinge | 63f7027 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 433 | const char *start, const char *end); |
| 434 | |
Glauber de Oliveira Costa | 2f485ef | 2008-01-30 13:32:10 +0100 | [diff] [blame] | 435 | unsigned native_patch(u8 type, u16 clobbers, void *ibuf, |
| 436 | unsigned long addr, unsigned len); |
| 437 | |
Jeremy Fitzhardinge | d572929 | 2007-07-17 18:37:04 -0700 | [diff] [blame] | 438 | int paravirt_disable_iospace(void); |
Jeremy Fitzhardinge | 63f7027 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 439 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 440 | /* |
| 441 | * This generates an indirect call based on the operation type number. |
| 442 | * The type number, computed in PARAVIRT_PATCH, is derived from the |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 443 | * offset into the paravirt_patch_template structure, and can therefore be |
| 444 | * freely converted back into a structure offset. |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 445 | */ |
Jeremy Fitzhardinge | 42854dc | 2009-03-16 17:24:34 -0700 | [diff] [blame] | 446 | #define PARAVIRT_CALL "call *%c[paravirt_opptr];" |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 447 | |
| 448 | /* |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 449 | * These macros are intended to wrap calls through one of the paravirt |
| 450 | * ops structs, so that they can be later identified and patched at |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 451 | * runtime. |
| 452 | * |
| 453 | * Normally, a call to a pv_op function is a simple indirect call: |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 454 | * (pv_op_struct.operations)(args...). |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 455 | * |
| 456 | * Unfortunately, this is a relatively slow operation for modern CPUs, |
| 457 | * because it cannot necessarily determine what the destination |
| 458 | * address is. In this case, the address is a runtime constant, so at |
| 459 | * the very least we can patch the call to e a simple direct call, or |
| 460 | * ideally, patch an inline implementation into the callsite. (Direct |
| 461 | * calls are essentially free, because the call and return addresses |
| 462 | * are completely predictable.) |
| 463 | * |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 464 | * For i386, these macros rely on the standard gcc "regparm(3)" calling |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 465 | * convention, in which the first three arguments are placed in %eax, |
| 466 | * %edx, %ecx (in that order), and the remaining arguments are placed |
| 467 | * on the stack. All caller-save registers (eax,edx,ecx) are expected |
| 468 | * to be modified (either clobbered or used for return values). |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 469 | * X86_64, on the other hand, already specifies a register-based calling |
| 470 | * conventions, returning at %rax, with parameteres going on %rdi, %rsi, |
| 471 | * %rdx, and %rcx. Note that for this reason, x86_64 does not need any |
| 472 | * special handling for dealing with 4 arguments, unlike i386. |
| 473 | * However, x86_64 also have to clobber all caller saved registers, which |
| 474 | * unfortunately, are quite a bit (r8 - r11) |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 475 | * |
| 476 | * The call instruction itself is marked by placing its start address |
| 477 | * and size into the .parainstructions section, so that |
| 478 | * apply_paravirt() in arch/i386/kernel/alternative.c can do the |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 479 | * appropriate patching under the control of the backend pv_init_ops |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 480 | * implementation. |
| 481 | * |
| 482 | * Unfortunately there's no way to get gcc to generate the args setup |
| 483 | * for the call, and then allow the call itself to be generated by an |
| 484 | * inline asm. Because of this, we must do the complete arg setup and |
| 485 | * return value handling from within these macros. This is fairly |
| 486 | * cumbersome. |
| 487 | * |
| 488 | * There are 5 sets of PVOP_* macros for dealing with 0-4 arguments. |
| 489 | * It could be extended to more arguments, but there would be little |
| 490 | * to be gained from that. For each number of arguments, there are |
| 491 | * the two VCALL and CALL variants for void and non-void functions. |
| 492 | * |
| 493 | * When there is a return value, the invoker of the macro must specify |
| 494 | * the return type. The macro then uses sizeof() on that type to |
| 495 | * determine whether its a 32 or 64 bit value, and places the return |
| 496 | * in the right register(s) (just %eax for 32-bit, and %edx:%eax for |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 497 | * 64-bit). For x86_64 machines, it just returns at %rax regardless of |
| 498 | * the return value size. |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 499 | * |
| 500 | * 64-bit arguments are passed as a pair of adjacent 32-bit arguments |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 501 | * i386 also passes 64-bit arguments as a pair of adjacent 32-bit arguments |
| 502 | * in low,high order |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 503 | * |
| 504 | * Small structures are passed and returned in registers. The macro |
| 505 | * calling convention can't directly deal with this, so the wrapper |
| 506 | * functions must do this. |
| 507 | * |
| 508 | * These PVOP_* macros are only defined within this header. This |
| 509 | * means that all uses must be wrapped in inline functions. This also |
| 510 | * makes sure the incoming and outgoing types are always correct. |
| 511 | */ |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 512 | #ifdef CONFIG_X86_32 |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 513 | #define PVOP_VCALL_ARGS \ |
| 514 | unsigned long __eax = __eax, __edx = __edx, __ecx = __ecx |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 515 | #define PVOP_CALL_ARGS PVOP_VCALL_ARGS |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 516 | |
| 517 | #define PVOP_CALL_ARG1(x) "a" ((unsigned long)(x)) |
| 518 | #define PVOP_CALL_ARG2(x) "d" ((unsigned long)(x)) |
| 519 | #define PVOP_CALL_ARG3(x) "c" ((unsigned long)(x)) |
| 520 | |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 521 | #define PVOP_VCALL_CLOBBERS "=a" (__eax), "=d" (__edx), \ |
| 522 | "=c" (__ecx) |
| 523 | #define PVOP_CALL_CLOBBERS PVOP_VCALL_CLOBBERS |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 524 | |
Jeremy Fitzhardinge | 0eb592d | 2009-02-03 16:00:38 -0800 | [diff] [blame] | 525 | #define PVOP_VCALLEE_CLOBBERS "=a" (__eax), "=d" (__edx) |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 526 | #define PVOP_CALLEE_CLOBBERS PVOP_VCALLEE_CLOBBERS |
| 527 | |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 528 | #define EXTRA_CLOBBERS |
| 529 | #define VEXTRA_CLOBBERS |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 530 | #else /* CONFIG_X86_64 */ |
| 531 | #define PVOP_VCALL_ARGS \ |
| 532 | unsigned long __edi = __edi, __esi = __esi, \ |
| 533 | __edx = __edx, __ecx = __ecx |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 534 | #define PVOP_CALL_ARGS PVOP_VCALL_ARGS, __eax |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 535 | |
| 536 | #define PVOP_CALL_ARG1(x) "D" ((unsigned long)(x)) |
| 537 | #define PVOP_CALL_ARG2(x) "S" ((unsigned long)(x)) |
| 538 | #define PVOP_CALL_ARG3(x) "d" ((unsigned long)(x)) |
| 539 | #define PVOP_CALL_ARG4(x) "c" ((unsigned long)(x)) |
| 540 | |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 541 | #define PVOP_VCALL_CLOBBERS "=D" (__edi), \ |
| 542 | "=S" (__esi), "=d" (__edx), \ |
| 543 | "=c" (__ecx) |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 544 | #define PVOP_CALL_CLOBBERS PVOP_VCALL_CLOBBERS, "=a" (__eax) |
| 545 | |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 546 | #define PVOP_VCALLEE_CLOBBERS "=a" (__eax) |
| 547 | #define PVOP_CALLEE_CLOBBERS PVOP_VCALLEE_CLOBBERS |
| 548 | |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 549 | #define EXTRA_CLOBBERS , "r8", "r9", "r10", "r11" |
| 550 | #define VEXTRA_CLOBBERS , "rax", "r8", "r9", "r10", "r11" |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 551 | #endif /* CONFIG_X86_32 */ |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 552 | |
Jeremy Fitzhardinge | 9734913 | 2008-06-25 00:19:14 -0400 | [diff] [blame] | 553 | #ifdef CONFIG_PARAVIRT_DEBUG |
| 554 | #define PVOP_TEST_NULL(op) BUG_ON(op == NULL) |
| 555 | #else |
| 556 | #define PVOP_TEST_NULL(op) ((void)op) |
| 557 | #endif |
| 558 | |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 559 | #define ____PVOP_CALL(rettype, op, clbr, call_clbr, extra_clbr, \ |
| 560 | pre, post, ...) \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 561 | ({ \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 562 | rettype __ret; \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 563 | PVOP_CALL_ARGS; \ |
Jeremy Fitzhardinge | 9734913 | 2008-06-25 00:19:14 -0400 | [diff] [blame] | 564 | PVOP_TEST_NULL(op); \ |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 565 | /* This is 32-bit specific, but is okay in 64-bit */ \ |
| 566 | /* since this condition will never hold */ \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 567 | if (sizeof(rettype) > sizeof(unsigned long)) { \ |
| 568 | asm volatile(pre \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 569 | paravirt_alt(PARAVIRT_CALL) \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 570 | post \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 571 | : call_clbr \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 572 | : paravirt_type(op), \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 573 | paravirt_clobber(clbr), \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 574 | ##__VA_ARGS__ \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 575 | : "memory", "cc" extra_clbr); \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 576 | __ret = (rettype)((((u64)__edx) << 32) | __eax); \ |
| 577 | } else { \ |
| 578 | asm volatile(pre \ |
| 579 | paravirt_alt(PARAVIRT_CALL) \ |
| 580 | post \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 581 | : call_clbr \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 582 | : paravirt_type(op), \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 583 | paravirt_clobber(clbr), \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 584 | ##__VA_ARGS__ \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 585 | : "memory", "cc" extra_clbr); \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 586 | __ret = (rettype)__eax; \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 587 | } \ |
| 588 | __ret; \ |
| 589 | }) |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 590 | |
| 591 | #define __PVOP_CALL(rettype, op, pre, post, ...) \ |
| 592 | ____PVOP_CALL(rettype, op, CLBR_ANY, PVOP_CALL_CLOBBERS, \ |
| 593 | EXTRA_CLOBBERS, pre, post, ##__VA_ARGS__) |
| 594 | |
| 595 | #define __PVOP_CALLEESAVE(rettype, op, pre, post, ...) \ |
| 596 | ____PVOP_CALL(rettype, op.func, CLBR_RET_REG, \ |
| 597 | PVOP_CALLEE_CLOBBERS, , \ |
| 598 | pre, post, ##__VA_ARGS__) |
| 599 | |
| 600 | |
| 601 | #define ____PVOP_VCALL(op, clbr, call_clbr, extra_clbr, pre, post, ...) \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 602 | ({ \ |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 603 | PVOP_VCALL_ARGS; \ |
Jeremy Fitzhardinge | 9734913 | 2008-06-25 00:19:14 -0400 | [diff] [blame] | 604 | PVOP_TEST_NULL(op); \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 605 | asm volatile(pre \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 606 | paravirt_alt(PARAVIRT_CALL) \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 607 | post \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 608 | : call_clbr \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 609 | : paravirt_type(op), \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 610 | paravirt_clobber(clbr), \ |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 611 | ##__VA_ARGS__ \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 612 | : "memory", "cc" extra_clbr); \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 613 | }) |
| 614 | |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 615 | #define __PVOP_VCALL(op, pre, post, ...) \ |
| 616 | ____PVOP_VCALL(op, CLBR_ANY, PVOP_VCALL_CLOBBERS, \ |
| 617 | VEXTRA_CLOBBERS, \ |
| 618 | pre, post, ##__VA_ARGS__) |
| 619 | |
| 620 | #define __PVOP_VCALLEESAVE(rettype, op, pre, post, ...) \ |
| 621 | ____PVOP_CALL(rettype, op.func, CLBR_RET_REG, \ |
| 622 | PVOP_VCALLEE_CLOBBERS, , \ |
| 623 | pre, post, ##__VA_ARGS__) |
| 624 | |
| 625 | |
| 626 | |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 627 | #define PVOP_CALL0(rettype, op) \ |
| 628 | __PVOP_CALL(rettype, op, "", "") |
| 629 | #define PVOP_VCALL0(op) \ |
| 630 | __PVOP_VCALL(op, "", "") |
| 631 | |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 632 | #define PVOP_CALLEE0(rettype, op) \ |
| 633 | __PVOP_CALLEESAVE(rettype, op, "", "") |
| 634 | #define PVOP_VCALLEE0(op) \ |
| 635 | __PVOP_VCALLEESAVE(op, "", "") |
| 636 | |
| 637 | |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 638 | #define PVOP_CALL1(rettype, op, arg1) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 639 | __PVOP_CALL(rettype, op, "", "", PVOP_CALL_ARG1(arg1)) |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 640 | #define PVOP_VCALL1(op, arg1) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 641 | __PVOP_VCALL(op, "", "", PVOP_CALL_ARG1(arg1)) |
| 642 | |
| 643 | #define PVOP_CALLEE1(rettype, op, arg1) \ |
| 644 | __PVOP_CALLEESAVE(rettype, op, "", "", PVOP_CALL_ARG1(arg1)) |
| 645 | #define PVOP_VCALLEE1(op, arg1) \ |
| 646 | __PVOP_VCALLEESAVE(op, "", "", PVOP_CALL_ARG1(arg1)) |
| 647 | |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 648 | |
| 649 | #define PVOP_CALL2(rettype, op, arg1, arg2) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 650 | __PVOP_CALL(rettype, op, "", "", PVOP_CALL_ARG1(arg1), \ |
| 651 | PVOP_CALL_ARG2(arg2)) |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 652 | #define PVOP_VCALL2(op, arg1, arg2) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 653 | __PVOP_VCALL(op, "", "", PVOP_CALL_ARG1(arg1), \ |
| 654 | PVOP_CALL_ARG2(arg2)) |
| 655 | |
| 656 | #define PVOP_CALLEE2(rettype, op, arg1, arg2) \ |
| 657 | __PVOP_CALLEESAVE(rettype, op, "", "", PVOP_CALL_ARG1(arg1), \ |
| 658 | PVOP_CALL_ARG2(arg2)) |
| 659 | #define PVOP_VCALLEE2(op, arg1, arg2) \ |
| 660 | __PVOP_VCALLEESAVE(op, "", "", PVOP_CALL_ARG1(arg1), \ |
| 661 | PVOP_CALL_ARG2(arg2)) |
| 662 | |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 663 | |
| 664 | #define PVOP_CALL3(rettype, op, arg1, arg2, arg3) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 665 | __PVOP_CALL(rettype, op, "", "", PVOP_CALL_ARG1(arg1), \ |
| 666 | PVOP_CALL_ARG2(arg2), PVOP_CALL_ARG3(arg3)) |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 667 | #define PVOP_VCALL3(op, arg1, arg2, arg3) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 668 | __PVOP_VCALL(op, "", "", PVOP_CALL_ARG1(arg1), \ |
| 669 | PVOP_CALL_ARG2(arg2), PVOP_CALL_ARG3(arg3)) |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 670 | |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 671 | /* This is the only difference in x86_64. We can make it much simpler */ |
| 672 | #ifdef CONFIG_X86_32 |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 673 | #define PVOP_CALL4(rettype, op, arg1, arg2, arg3, arg4) \ |
| 674 | __PVOP_CALL(rettype, op, \ |
| 675 | "push %[_arg4];", "lea 4(%%esp),%%esp;", \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 676 | PVOP_CALL_ARG1(arg1), PVOP_CALL_ARG2(arg2), \ |
| 677 | PVOP_CALL_ARG3(arg3), [_arg4] "mr" ((u32)(arg4))) |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 678 | #define PVOP_VCALL4(op, arg1, arg2, arg3, arg4) \ |
| 679 | __PVOP_VCALL(op, \ |
| 680 | "push %[_arg4];", "lea 4(%%esp),%%esp;", \ |
| 681 | "0" ((u32)(arg1)), "1" ((u32)(arg2)), \ |
| 682 | "2" ((u32)(arg3)), [_arg4] "mr" ((u32)(arg4))) |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 683 | #else |
| 684 | #define PVOP_CALL4(rettype, op, arg1, arg2, arg3, arg4) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 685 | __PVOP_CALL(rettype, op, "", "", \ |
| 686 | PVOP_CALL_ARG1(arg1), PVOP_CALL_ARG2(arg2), \ |
| 687 | PVOP_CALL_ARG3(arg3), PVOP_CALL_ARG4(arg4)) |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 688 | #define PVOP_VCALL4(op, arg1, arg2, arg3, arg4) \ |
Jeremy Fitzhardinge | 791bad9 | 2009-01-28 14:35:06 -0800 | [diff] [blame] | 689 | __PVOP_VCALL(op, "", "", \ |
| 690 | PVOP_CALL_ARG1(arg1), PVOP_CALL_ARG2(arg2), \ |
| 691 | PVOP_CALL_ARG3(arg3), PVOP_CALL_ARG4(arg4)) |
Glauber de Oliveira Costa | a474636 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 692 | #endif |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 693 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 694 | static inline int paravirt_enabled(void) |
| 695 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 696 | return pv_info.paravirt_enabled; |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 697 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 698 | |
H. Peter Anvin | faca622 | 2008-01-30 13:31:02 +0100 | [diff] [blame] | 699 | static inline void load_sp0(struct tss_struct *tss, |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 700 | struct thread_struct *thread) |
| 701 | { |
H. Peter Anvin | faca622 | 2008-01-30 13:31:02 +0100 | [diff] [blame] | 702 | PVOP_VCALL2(pv_cpu_ops.load_sp0, tss, thread); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 703 | } |
| 704 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 705 | #define ARCH_SETUP pv_init_ops.arch_setup(); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 706 | static inline unsigned long get_wallclock(void) |
| 707 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 708 | return PVOP_CALL0(unsigned long, pv_time_ops.get_wallclock); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 709 | } |
| 710 | |
| 711 | static inline int set_wallclock(unsigned long nowtime) |
| 712 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 713 | return PVOP_CALL1(int, pv_time_ops.set_wallclock, nowtime); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 714 | } |
| 715 | |
Zachary Amsden | e30fab3 | 2007-03-05 00:30:39 -0800 | [diff] [blame] | 716 | static inline void (*choose_time_init(void))(void) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 717 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 718 | return pv_time_ops.time_init; |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 719 | } |
| 720 | |
| 721 | /* The paravirtualized CPUID instruction. */ |
| 722 | static inline void __cpuid(unsigned int *eax, unsigned int *ebx, |
| 723 | unsigned int *ecx, unsigned int *edx) |
| 724 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 725 | PVOP_VCALL4(pv_cpu_ops.cpuid, eax, ebx, ecx, edx); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 726 | } |
| 727 | |
| 728 | /* |
| 729 | * These special macros can be used to get or set a debugging register |
| 730 | */ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 731 | static inline unsigned long paravirt_get_debugreg(int reg) |
| 732 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 733 | return PVOP_CALL1(unsigned long, pv_cpu_ops.get_debugreg, reg); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 734 | } |
| 735 | #define get_debugreg(var, reg) var = paravirt_get_debugreg(reg) |
| 736 | static inline void set_debugreg(unsigned long val, int reg) |
| 737 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 738 | PVOP_VCALL2(pv_cpu_ops.set_debugreg, reg, val); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 739 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 740 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 741 | static inline void clts(void) |
| 742 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 743 | PVOP_VCALL0(pv_cpu_ops.clts); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 744 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 745 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 746 | static inline unsigned long read_cr0(void) |
| 747 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 748 | return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr0); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 749 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 750 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 751 | static inline void write_cr0(unsigned long x) |
| 752 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 753 | PVOP_VCALL1(pv_cpu_ops.write_cr0, x); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 754 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 755 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 756 | static inline unsigned long read_cr2(void) |
| 757 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 758 | return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr2); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 759 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 760 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 761 | static inline void write_cr2(unsigned long x) |
| 762 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 763 | PVOP_VCALL1(pv_mmu_ops.write_cr2, x); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 764 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 765 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 766 | static inline unsigned long read_cr3(void) |
| 767 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 768 | return PVOP_CALL0(unsigned long, pv_mmu_ops.read_cr3); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 769 | } |
| 770 | |
| 771 | static inline void write_cr3(unsigned long x) |
| 772 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 773 | PVOP_VCALL1(pv_mmu_ops.write_cr3, x); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 774 | } |
| 775 | |
| 776 | static inline unsigned long read_cr4(void) |
| 777 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 778 | return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr4); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 779 | } |
| 780 | static inline unsigned long read_cr4_safe(void) |
| 781 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 782 | return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr4_safe); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 783 | } |
| 784 | |
| 785 | static inline void write_cr4(unsigned long x) |
| 786 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 787 | PVOP_VCALL1(pv_cpu_ops.write_cr4, x); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 788 | } |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 789 | |
Glauber de Oliveira Costa | 94ea03c | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 790 | #ifdef CONFIG_X86_64 |
Glauber de Oliveira Costa | 4c9890c | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 791 | static inline unsigned long read_cr8(void) |
| 792 | { |
| 793 | return PVOP_CALL0(unsigned long, pv_cpu_ops.read_cr8); |
| 794 | } |
| 795 | |
| 796 | static inline void write_cr8(unsigned long x) |
| 797 | { |
| 798 | PVOP_VCALL1(pv_cpu_ops.write_cr8, x); |
| 799 | } |
Glauber de Oliveira Costa | 94ea03c | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 800 | #endif |
Glauber de Oliveira Costa | 4c9890c | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 801 | |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 802 | static inline void raw_safe_halt(void) |
| 803 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 804 | PVOP_VCALL0(pv_irq_ops.safe_halt); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 805 | } |
| 806 | |
| 807 | static inline void halt(void) |
| 808 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 809 | PVOP_VCALL0(pv_irq_ops.safe_halt); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 810 | } |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 811 | |
| 812 | static inline void wbinvd(void) |
| 813 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 814 | PVOP_VCALL0(pv_cpu_ops.wbinvd); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 815 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 816 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 817 | #define get_kernel_rpl() (pv_info.kernel_rpl) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 818 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 819 | static inline u64 paravirt_read_msr(unsigned msr, int *err) |
| 820 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 821 | return PVOP_CALL2(u64, pv_cpu_ops.read_msr, msr, err); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 822 | } |
Yinghai Lu | b05f78f | 2008-08-22 01:32:50 -0700 | [diff] [blame] | 823 | static inline u64 paravirt_read_msr_amd(unsigned msr, int *err) |
| 824 | { |
| 825 | return PVOP_CALL2(u64, pv_cpu_ops.read_msr_amd, msr, err); |
| 826 | } |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 827 | static inline int paravirt_write_msr(unsigned msr, unsigned low, unsigned high) |
| 828 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 829 | return PVOP_CALL3(int, pv_cpu_ops.write_msr, msr, low, high); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 830 | } |
| 831 | |
Rusty Russell | 90a0a06 | 2007-05-02 19:27:10 +0200 | [diff] [blame] | 832 | /* These should all do BUG_ON(_err), but our headers are too tangled. */ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 833 | #define rdmsr(msr, val1, val2) \ |
| 834 | do { \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 835 | int _err; \ |
| 836 | u64 _l = paravirt_read_msr(msr, &_err); \ |
| 837 | val1 = (u32)_l; \ |
| 838 | val2 = _l >> 32; \ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 839 | } while (0) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 840 | |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 841 | #define wrmsr(msr, val1, val2) \ |
| 842 | do { \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 843 | paravirt_write_msr(msr, val1, val2); \ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 844 | } while (0) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 845 | |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 846 | #define rdmsrl(msr, val) \ |
| 847 | do { \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 848 | int _err; \ |
| 849 | val = paravirt_read_msr(msr, &_err); \ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 850 | } while (0) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 851 | |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 852 | #define wrmsrl(msr, val) wrmsr(msr, (u32)((u64)(val)), ((u64)(val))>>32) |
| 853 | #define wrmsr_safe(msr, a, b) paravirt_write_msr(msr, a, b) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 854 | |
| 855 | /* rdmsr with exception handling */ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 856 | #define rdmsr_safe(msr, a, b) \ |
| 857 | ({ \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 858 | int _err; \ |
| 859 | u64 _l = paravirt_read_msr(msr, &_err); \ |
| 860 | (*a) = (u32)_l; \ |
| 861 | (*b) = _l >> 32; \ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 862 | _err; \ |
| 863 | }) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 864 | |
Andi Kleen | 1de87bd | 2008-03-22 10:59:28 +0100 | [diff] [blame] | 865 | static inline int rdmsrl_safe(unsigned msr, unsigned long long *p) |
| 866 | { |
| 867 | int err; |
| 868 | |
| 869 | *p = paravirt_read_msr(msr, &err); |
| 870 | return err; |
| 871 | } |
Yinghai Lu | b05f78f | 2008-08-22 01:32:50 -0700 | [diff] [blame] | 872 | static inline int rdmsrl_amd_safe(unsigned msr, unsigned long long *p) |
| 873 | { |
| 874 | int err; |
| 875 | |
| 876 | *p = paravirt_read_msr_amd(msr, &err); |
| 877 | return err; |
| 878 | } |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 879 | |
| 880 | static inline u64 paravirt_read_tsc(void) |
| 881 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 882 | return PVOP_CALL0(u64, pv_cpu_ops.read_tsc); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 883 | } |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 884 | |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 885 | #define rdtscl(low) \ |
| 886 | do { \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 887 | u64 _l = paravirt_read_tsc(); \ |
| 888 | low = (int)_l; \ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 889 | } while (0) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 890 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 891 | #define rdtscll(val) (val = paravirt_read_tsc()) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 892 | |
Jeremy Fitzhardinge | 688340e | 2007-07-17 18:37:04 -0700 | [diff] [blame] | 893 | static inline unsigned long long paravirt_sched_clock(void) |
| 894 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 895 | return PVOP_CALL0(unsigned long long, pv_time_ops.sched_clock); |
Jeremy Fitzhardinge | 688340e | 2007-07-17 18:37:04 -0700 | [diff] [blame] | 896 | } |
Alok Kataria | e93ef94 | 2008-07-01 11:43:36 -0700 | [diff] [blame] | 897 | #define calibrate_tsc() (pv_time_ops.get_tsc_khz()) |
Zachary Amsden | 6cb9a83 | 2007-03-05 00:30:35 -0800 | [diff] [blame] | 898 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 899 | static inline unsigned long long paravirt_read_pmc(int counter) |
| 900 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 901 | return PVOP_CALL1(u64, pv_cpu_ops.read_pmc, counter); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 902 | } |
| 903 | |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 904 | #define rdpmc(counter, low, high) \ |
| 905 | do { \ |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 906 | u64 _l = paravirt_read_pmc(counter); \ |
| 907 | low = (u32)_l; \ |
| 908 | high = _l >> 32; \ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 909 | } while (0) |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 910 | |
Glauber de Oliveira Costa | e5aaac4 | 2008-01-30 13:32:05 +0100 | [diff] [blame] | 911 | static inline unsigned long long paravirt_rdtscp(unsigned int *aux) |
| 912 | { |
| 913 | return PVOP_CALL1(u64, pv_cpu_ops.read_tscp, aux); |
| 914 | } |
| 915 | |
| 916 | #define rdtscp(low, high, aux) \ |
| 917 | do { \ |
| 918 | int __aux; \ |
| 919 | unsigned long __val = paravirt_rdtscp(&__aux); \ |
| 920 | (low) = (u32)__val; \ |
| 921 | (high) = (u32)(__val >> 32); \ |
| 922 | (aux) = __aux; \ |
| 923 | } while (0) |
| 924 | |
| 925 | #define rdtscpll(val, aux) \ |
| 926 | do { \ |
| 927 | unsigned long __aux; \ |
| 928 | val = paravirt_rdtscp(&__aux); \ |
| 929 | (aux) = __aux; \ |
| 930 | } while (0) |
| 931 | |
Jeremy Fitzhardinge | 38ffbe6 | 2008-07-23 14:21:18 -0700 | [diff] [blame] | 932 | static inline void paravirt_alloc_ldt(struct desc_struct *ldt, unsigned entries) |
| 933 | { |
| 934 | PVOP_VCALL2(pv_cpu_ops.alloc_ldt, ldt, entries); |
| 935 | } |
| 936 | |
| 937 | static inline void paravirt_free_ldt(struct desc_struct *ldt, unsigned entries) |
| 938 | { |
| 939 | PVOP_VCALL2(pv_cpu_ops.free_ldt, ldt, entries); |
| 940 | } |
| 941 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 942 | static inline void load_TR_desc(void) |
| 943 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 944 | PVOP_VCALL0(pv_cpu_ops.load_tr_desc); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 945 | } |
Glauber de Oliveira Costa | 6b68f01 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 946 | static inline void load_gdt(const struct desc_ptr *dtr) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 947 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 948 | PVOP_VCALL1(pv_cpu_ops.load_gdt, dtr); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 949 | } |
Glauber de Oliveira Costa | 6b68f01 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 950 | static inline void load_idt(const struct desc_ptr *dtr) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 951 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 952 | PVOP_VCALL1(pv_cpu_ops.load_idt, dtr); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 953 | } |
| 954 | static inline void set_ldt(const void *addr, unsigned entries) |
| 955 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 956 | PVOP_VCALL2(pv_cpu_ops.set_ldt, addr, entries); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 957 | } |
Glauber de Oliveira Costa | 6b68f01 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 958 | static inline void store_gdt(struct desc_ptr *dtr) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 959 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 960 | PVOP_VCALL1(pv_cpu_ops.store_gdt, dtr); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 961 | } |
Glauber de Oliveira Costa | 6b68f01 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 962 | static inline void store_idt(struct desc_ptr *dtr) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 963 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 964 | PVOP_VCALL1(pv_cpu_ops.store_idt, dtr); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 965 | } |
| 966 | static inline unsigned long paravirt_store_tr(void) |
| 967 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 968 | return PVOP_CALL0(unsigned long, pv_cpu_ops.store_tr); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 969 | } |
| 970 | #define store_tr(tr) ((tr) = paravirt_store_tr()) |
| 971 | static inline void load_TLS(struct thread_struct *t, unsigned cpu) |
| 972 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 973 | PVOP_VCALL2(pv_cpu_ops.load_tls, t, cpu); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 974 | } |
Glauber de Oliveira Costa | 75b8bb3 | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 975 | |
Jeremy Fitzhardinge | 9f9d489 | 2008-06-25 00:19:32 -0400 | [diff] [blame] | 976 | #ifdef CONFIG_X86_64 |
| 977 | static inline void load_gs_index(unsigned int gs) |
| 978 | { |
| 979 | PVOP_VCALL1(pv_cpu_ops.load_gs_index, gs); |
| 980 | } |
| 981 | #endif |
| 982 | |
Glauber de Oliveira Costa | 75b8bb3 | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 983 | static inline void write_ldt_entry(struct desc_struct *dt, int entry, |
| 984 | const void *desc) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 985 | { |
Glauber de Oliveira Costa | 75b8bb3 | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 986 | PVOP_VCALL3(pv_cpu_ops.write_ldt_entry, dt, entry, desc); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 987 | } |
Glauber de Oliveira Costa | 014b15b | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 988 | |
| 989 | static inline void write_gdt_entry(struct desc_struct *dt, int entry, |
| 990 | void *desc, int type) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 991 | { |
Glauber de Oliveira Costa | 014b15b | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 992 | PVOP_VCALL4(pv_cpu_ops.write_gdt_entry, dt, entry, desc, type); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 993 | } |
Glauber de Oliveira Costa | 014b15b | 2008-01-30 13:31:13 +0100 | [diff] [blame] | 994 | |
Glauber de Oliveira Costa | 8d94734 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 995 | static inline void write_idt_entry(gate_desc *dt, int entry, const gate_desc *g) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 996 | { |
Glauber de Oliveira Costa | 8d94734 | 2008-01-30 13:31:12 +0100 | [diff] [blame] | 997 | PVOP_VCALL3(pv_cpu_ops.write_idt_entry, dt, entry, g); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 998 | } |
| 999 | static inline void set_iopl_mask(unsigned mask) |
| 1000 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1001 | PVOP_VCALL1(pv_cpu_ops.set_iopl_mask, mask); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1002 | } |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 1003 | |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 1004 | /* The paravirtualized I/O functions */ |
Joe Perches | 49cd740 | 2008-03-23 01:03:00 -0700 | [diff] [blame] | 1005 | static inline void slow_down_io(void) |
| 1006 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1007 | pv_cpu_ops.io_delay(); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 1008 | #ifdef REALLY_SLOW_IO |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1009 | pv_cpu_ops.io_delay(); |
| 1010 | pv_cpu_ops.io_delay(); |
| 1011 | pv_cpu_ops.io_delay(); |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 1012 | #endif |
| 1013 | } |
| 1014 | |
Rusty Russell | 13623d7 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1015 | #ifdef CONFIG_X86_LOCAL_APIC |
Zachary Amsden | bbab4f3 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1016 | static inline void setup_boot_clock(void) |
| 1017 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1018 | PVOP_VCALL0(pv_apic_ops.setup_boot_clock); |
Zachary Amsden | bbab4f3 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1019 | } |
| 1020 | |
| 1021 | static inline void setup_secondary_clock(void) |
| 1022 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1023 | PVOP_VCALL0(pv_apic_ops.setup_secondary_clock); |
Zachary Amsden | bbab4f3 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1024 | } |
Rusty Russell | 13623d7 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1025 | #endif |
| 1026 | |
Jeremy Fitzhardinge | 6996d3b | 2007-07-17 18:37:03 -0700 | [diff] [blame] | 1027 | static inline void paravirt_post_allocator_init(void) |
| 1028 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1029 | if (pv_init_ops.post_allocator_init) |
| 1030 | (*pv_init_ops.post_allocator_init)(); |
Jeremy Fitzhardinge | 6996d3b | 2007-07-17 18:37:03 -0700 | [diff] [blame] | 1031 | } |
| 1032 | |
Jeremy Fitzhardinge | b239fb2 | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 1033 | static inline void paravirt_pagetable_setup_start(pgd_t *base) |
| 1034 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1035 | (*pv_mmu_ops.pagetable_setup_start)(base); |
Jeremy Fitzhardinge | b239fb2 | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 1036 | } |
| 1037 | |
| 1038 | static inline void paravirt_pagetable_setup_done(pgd_t *base) |
| 1039 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1040 | (*pv_mmu_ops.pagetable_setup_done)(base); |
Jeremy Fitzhardinge | b239fb2 | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 1041 | } |
Jeremy Fitzhardinge | 3dc494e | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 1042 | |
Zachary Amsden | ae5da27 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1043 | #ifdef CONFIG_SMP |
| 1044 | static inline void startup_ipi_hook(int phys_apicid, unsigned long start_eip, |
| 1045 | unsigned long start_esp) |
| 1046 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1047 | PVOP_VCALL3(pv_apic_ops.startup_ipi_hook, |
| 1048 | phys_apicid, start_eip, start_esp); |
Zachary Amsden | ae5da27 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1049 | } |
| 1050 | #endif |
Rusty Russell | 13623d7 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1051 | |
Jeremy Fitzhardinge | d6dd61c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1052 | static inline void paravirt_activate_mm(struct mm_struct *prev, |
| 1053 | struct mm_struct *next) |
| 1054 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1055 | PVOP_VCALL2(pv_mmu_ops.activate_mm, prev, next); |
Jeremy Fitzhardinge | d6dd61c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1056 | } |
| 1057 | |
| 1058 | static inline void arch_dup_mmap(struct mm_struct *oldmm, |
| 1059 | struct mm_struct *mm) |
| 1060 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1061 | PVOP_VCALL2(pv_mmu_ops.dup_mmap, oldmm, mm); |
Jeremy Fitzhardinge | d6dd61c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1062 | } |
| 1063 | |
| 1064 | static inline void arch_exit_mmap(struct mm_struct *mm) |
| 1065 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1066 | PVOP_VCALL1(pv_mmu_ops.exit_mmap, mm); |
Jeremy Fitzhardinge | d6dd61c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1067 | } |
| 1068 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1069 | static inline void __flush_tlb(void) |
| 1070 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1071 | PVOP_VCALL0(pv_mmu_ops.flush_tlb_user); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1072 | } |
| 1073 | static inline void __flush_tlb_global(void) |
| 1074 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1075 | PVOP_VCALL0(pv_mmu_ops.flush_tlb_kernel); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1076 | } |
| 1077 | static inline void __flush_tlb_single(unsigned long addr) |
| 1078 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1079 | PVOP_VCALL1(pv_mmu_ops.flush_tlb_single, addr); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1080 | } |
Rusty Russell | da181a8 | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1081 | |
Rusty Russell | 4595f96 | 2009-01-10 21:58:09 -0800 | [diff] [blame] | 1082 | static inline void flush_tlb_others(const struct cpumask *cpumask, |
| 1083 | struct mm_struct *mm, |
Jeremy Fitzhardinge | d4c1047 | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 1084 | unsigned long va) |
| 1085 | { |
Rusty Russell | 4595f96 | 2009-01-10 21:58:09 -0800 | [diff] [blame] | 1086 | PVOP_VCALL3(pv_mmu_ops.flush_tlb_others, cpumask, mm, va); |
Jeremy Fitzhardinge | d4c1047 | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 1087 | } |
| 1088 | |
Jeremy Fitzhardinge | eba0045 | 2008-06-25 00:19:12 -0400 | [diff] [blame] | 1089 | static inline int paravirt_pgd_alloc(struct mm_struct *mm) |
| 1090 | { |
| 1091 | return PVOP_CALL1(int, pv_mmu_ops.pgd_alloc, mm); |
| 1092 | } |
| 1093 | |
| 1094 | static inline void paravirt_pgd_free(struct mm_struct *mm, pgd_t *pgd) |
| 1095 | { |
| 1096 | PVOP_VCALL2(pv_mmu_ops.pgd_free, mm, pgd); |
| 1097 | } |
| 1098 | |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 1099 | static inline void paravirt_alloc_pte(struct mm_struct *mm, unsigned long pfn) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1100 | { |
Jeremy Fitzhardinge | 6944a9c | 2008-03-17 16:37:01 -0700 | [diff] [blame] | 1101 | PVOP_VCALL2(pv_mmu_ops.alloc_pte, mm, pfn); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1102 | } |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 1103 | static inline void paravirt_release_pte(unsigned long pfn) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1104 | { |
Jeremy Fitzhardinge | 6944a9c | 2008-03-17 16:37:01 -0700 | [diff] [blame] | 1105 | PVOP_VCALL1(pv_mmu_ops.release_pte, pfn); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1106 | } |
Zachary Amsden | c119ecc | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1107 | |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 1108 | static inline void paravirt_alloc_pmd(struct mm_struct *mm, unsigned long pfn) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1109 | { |
Jeremy Fitzhardinge | 6944a9c | 2008-03-17 16:37:01 -0700 | [diff] [blame] | 1110 | PVOP_VCALL2(pv_mmu_ops.alloc_pmd, mm, pfn); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1111 | } |
| 1112 | |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 1113 | static inline void paravirt_alloc_pmd_clone(unsigned long pfn, unsigned long clonepfn, |
| 1114 | unsigned long start, unsigned long count) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1115 | { |
Jeremy Fitzhardinge | 6944a9c | 2008-03-17 16:37:01 -0700 | [diff] [blame] | 1116 | PVOP_VCALL4(pv_mmu_ops.alloc_pmd_clone, pfn, clonepfn, start, count); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1117 | } |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 1118 | static inline void paravirt_release_pmd(unsigned long pfn) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1119 | { |
Jeremy Fitzhardinge | 6944a9c | 2008-03-17 16:37:01 -0700 | [diff] [blame] | 1120 | PVOP_VCALL1(pv_mmu_ops.release_pmd, pfn); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1121 | } |
| 1122 | |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 1123 | static inline void paravirt_alloc_pud(struct mm_struct *mm, unsigned long pfn) |
Jeremy Fitzhardinge | 2761fa0 | 2008-03-17 16:37:02 -0700 | [diff] [blame] | 1124 | { |
| 1125 | PVOP_VCALL2(pv_mmu_ops.alloc_pud, mm, pfn); |
| 1126 | } |
Eduardo Habkost | f863993 | 2008-07-30 18:32:27 -0300 | [diff] [blame] | 1127 | static inline void paravirt_release_pud(unsigned long pfn) |
Jeremy Fitzhardinge | 2761fa0 | 2008-03-17 16:37:02 -0700 | [diff] [blame] | 1128 | { |
| 1129 | PVOP_VCALL1(pv_mmu_ops.release_pud, pfn); |
| 1130 | } |
| 1131 | |
Jeremy Fitzhardinge | ce6234b | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 1132 | #ifdef CONFIG_HIGHPTE |
| 1133 | static inline void *kmap_atomic_pte(struct page *page, enum km_type type) |
| 1134 | { |
| 1135 | unsigned long ret; |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1136 | ret = PVOP_CALL2(unsigned long, pv_mmu_ops.kmap_atomic_pte, page, type); |
Jeremy Fitzhardinge | ce6234b | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 1137 | return (void *)ret; |
| 1138 | } |
| 1139 | #endif |
| 1140 | |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1141 | static inline void pte_update(struct mm_struct *mm, unsigned long addr, |
| 1142 | pte_t *ptep) |
| 1143 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1144 | PVOP_VCALL3(pv_mmu_ops.pte_update, mm, addr, ptep); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1145 | } |
| 1146 | |
| 1147 | static inline void pte_update_defer(struct mm_struct *mm, unsigned long addr, |
| 1148 | pte_t *ptep) |
| 1149 | { |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1150 | PVOP_VCALL3(pv_mmu_ops.pte_update_defer, mm, addr, ptep); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1151 | } |
| 1152 | |
Jeremy Fitzhardinge | 773221f | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1153 | static inline pte_t __pte(pteval_t val) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1154 | { |
Jeremy Fitzhardinge | 773221f | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1155 | pteval_t ret; |
| 1156 | |
| 1157 | if (sizeof(pteval_t) > sizeof(long)) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1158 | ret = PVOP_CALLEE2(pteval_t, |
| 1159 | pv_mmu_ops.make_pte, |
| 1160 | val, (u64)val >> 32); |
Jeremy Fitzhardinge | 773221f | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1161 | else |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1162 | ret = PVOP_CALLEE1(pteval_t, |
| 1163 | pv_mmu_ops.make_pte, |
| 1164 | val); |
Jeremy Fitzhardinge | 773221f | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1165 | |
Jeremy Fitzhardinge | c8e5393 | 2008-01-30 13:32:57 +0100 | [diff] [blame] | 1166 | return (pte_t) { .pte = ret }; |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1167 | } |
| 1168 | |
Jeremy Fitzhardinge | 773221f | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1169 | static inline pteval_t pte_val(pte_t pte) |
| 1170 | { |
| 1171 | pteval_t ret; |
| 1172 | |
| 1173 | if (sizeof(pteval_t) > sizeof(long)) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1174 | ret = PVOP_CALLEE2(pteval_t, pv_mmu_ops.pte_val, |
| 1175 | pte.pte, (u64)pte.pte >> 32); |
Jeremy Fitzhardinge | 773221f | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1176 | else |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1177 | ret = PVOP_CALLEE1(pteval_t, pv_mmu_ops.pte_val, |
| 1178 | pte.pte); |
Jeremy Fitzhardinge | 773221f | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1179 | |
| 1180 | return ret; |
| 1181 | } |
| 1182 | |
Jeremy Fitzhardinge | ef38503 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1183 | static inline pgd_t __pgd(pgdval_t val) |
| 1184 | { |
| 1185 | pgdval_t ret; |
| 1186 | |
| 1187 | if (sizeof(pgdval_t) > sizeof(long)) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1188 | ret = PVOP_CALLEE2(pgdval_t, pv_mmu_ops.make_pgd, |
| 1189 | val, (u64)val >> 32); |
Jeremy Fitzhardinge | ef38503 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1190 | else |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1191 | ret = PVOP_CALLEE1(pgdval_t, pv_mmu_ops.make_pgd, |
| 1192 | val); |
Jeremy Fitzhardinge | ef38503 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1193 | |
| 1194 | return (pgd_t) { ret }; |
| 1195 | } |
| 1196 | |
| 1197 | static inline pgdval_t pgd_val(pgd_t pgd) |
| 1198 | { |
| 1199 | pgdval_t ret; |
| 1200 | |
| 1201 | if (sizeof(pgdval_t) > sizeof(long)) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1202 | ret = PVOP_CALLEE2(pgdval_t, pv_mmu_ops.pgd_val, |
| 1203 | pgd.pgd, (u64)pgd.pgd >> 32); |
Jeremy Fitzhardinge | ef38503 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1204 | else |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1205 | ret = PVOP_CALLEE1(pgdval_t, pv_mmu_ops.pgd_val, |
| 1206 | pgd.pgd); |
Jeremy Fitzhardinge | ef38503 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1207 | |
| 1208 | return ret; |
| 1209 | } |
| 1210 | |
Jeremy Fitzhardinge | 08b882c | 2008-06-16 04:30:01 -0700 | [diff] [blame] | 1211 | #define __HAVE_ARCH_PTEP_MODIFY_PROT_TRANSACTION |
| 1212 | static inline pte_t ptep_modify_prot_start(struct mm_struct *mm, unsigned long addr, |
| 1213 | pte_t *ptep) |
| 1214 | { |
| 1215 | pteval_t ret; |
| 1216 | |
| 1217 | ret = PVOP_CALL3(pteval_t, pv_mmu_ops.ptep_modify_prot_start, |
| 1218 | mm, addr, ptep); |
| 1219 | |
| 1220 | return (pte_t) { .pte = ret }; |
| 1221 | } |
| 1222 | |
| 1223 | static inline void ptep_modify_prot_commit(struct mm_struct *mm, unsigned long addr, |
| 1224 | pte_t *ptep, pte_t pte) |
| 1225 | { |
| 1226 | if (sizeof(pteval_t) > sizeof(long)) |
| 1227 | /* 5 arg words */ |
| 1228 | pv_mmu_ops.ptep_modify_prot_commit(mm, addr, ptep, pte); |
| 1229 | else |
| 1230 | PVOP_VCALL4(pv_mmu_ops.ptep_modify_prot_commit, |
| 1231 | mm, addr, ptep, pte.pte); |
| 1232 | } |
| 1233 | |
Jeremy Fitzhardinge | 4eed80c | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1234 | static inline void set_pte(pte_t *ptep, pte_t pte) |
| 1235 | { |
| 1236 | if (sizeof(pteval_t) > sizeof(long)) |
| 1237 | PVOP_VCALL3(pv_mmu_ops.set_pte, ptep, |
| 1238 | pte.pte, (u64)pte.pte >> 32); |
| 1239 | else |
| 1240 | PVOP_VCALL2(pv_mmu_ops.set_pte, ptep, |
| 1241 | pte.pte); |
| 1242 | } |
| 1243 | |
| 1244 | static inline void set_pte_at(struct mm_struct *mm, unsigned long addr, |
| 1245 | pte_t *ptep, pte_t pte) |
| 1246 | { |
| 1247 | if (sizeof(pteval_t) > sizeof(long)) |
| 1248 | /* 5 arg words */ |
| 1249 | pv_mmu_ops.set_pte_at(mm, addr, ptep, pte); |
| 1250 | else |
| 1251 | PVOP_VCALL4(pv_mmu_ops.set_pte_at, mm, addr, ptep, pte.pte); |
| 1252 | } |
| 1253 | |
Jeremy Fitzhardinge | 60b3f62 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1254 | static inline void set_pmd(pmd_t *pmdp, pmd_t pmd) |
| 1255 | { |
| 1256 | pmdval_t val = native_pmd_val(pmd); |
| 1257 | |
| 1258 | if (sizeof(pmdval_t) > sizeof(long)) |
| 1259 | PVOP_VCALL3(pv_mmu_ops.set_pmd, pmdp, val, (u64)val >> 32); |
| 1260 | else |
| 1261 | PVOP_VCALL2(pv_mmu_ops.set_pmd, pmdp, val); |
| 1262 | } |
| 1263 | |
Glauber de Oliveira Costa | 1fe9151 | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 1264 | #if PAGETABLE_LEVELS >= 3 |
| 1265 | static inline pmd_t __pmd(pmdval_t val) |
| 1266 | { |
| 1267 | pmdval_t ret; |
| 1268 | |
| 1269 | if (sizeof(pmdval_t) > sizeof(long)) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1270 | ret = PVOP_CALLEE2(pmdval_t, pv_mmu_ops.make_pmd, |
| 1271 | val, (u64)val >> 32); |
Glauber de Oliveira Costa | 1fe9151 | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 1272 | else |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1273 | ret = PVOP_CALLEE1(pmdval_t, pv_mmu_ops.make_pmd, |
| 1274 | val); |
Glauber de Oliveira Costa | 1fe9151 | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 1275 | |
| 1276 | return (pmd_t) { ret }; |
| 1277 | } |
| 1278 | |
| 1279 | static inline pmdval_t pmd_val(pmd_t pmd) |
| 1280 | { |
| 1281 | pmdval_t ret; |
| 1282 | |
| 1283 | if (sizeof(pmdval_t) > sizeof(long)) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1284 | ret = PVOP_CALLEE2(pmdval_t, pv_mmu_ops.pmd_val, |
| 1285 | pmd.pmd, (u64)pmd.pmd >> 32); |
Glauber de Oliveira Costa | 1fe9151 | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 1286 | else |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1287 | ret = PVOP_CALLEE1(pmdval_t, pv_mmu_ops.pmd_val, |
| 1288 | pmd.pmd); |
Glauber de Oliveira Costa | 1fe9151 | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 1289 | |
| 1290 | return ret; |
| 1291 | } |
| 1292 | |
| 1293 | static inline void set_pud(pud_t *pudp, pud_t pud) |
| 1294 | { |
| 1295 | pudval_t val = native_pud_val(pud); |
| 1296 | |
| 1297 | if (sizeof(pudval_t) > sizeof(long)) |
| 1298 | PVOP_VCALL3(pv_mmu_ops.set_pud, pudp, |
| 1299 | val, (u64)val >> 32); |
| 1300 | else |
| 1301 | PVOP_VCALL2(pv_mmu_ops.set_pud, pudp, |
| 1302 | val); |
| 1303 | } |
Eduardo Habkost | 9042219 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 1304 | #if PAGETABLE_LEVELS == 4 |
| 1305 | static inline pud_t __pud(pudval_t val) |
| 1306 | { |
| 1307 | pudval_t ret; |
| 1308 | |
| 1309 | if (sizeof(pudval_t) > sizeof(long)) |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1310 | ret = PVOP_CALLEE2(pudval_t, pv_mmu_ops.make_pud, |
| 1311 | val, (u64)val >> 32); |
Eduardo Habkost | 9042219 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 1312 | else |
Jeremy Fitzhardinge | da5de7c | 2009-01-28 14:35:07 -0800 | [diff] [blame] | 1313 | ret = PVOP_CALLEE1(pudval_t, pv_mmu_ops.make_pud, |
| 1314 | val); |
Eduardo Habkost | 9042219 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 1315 | |
| 1316 | return (pud_t) { ret }; |
| 1317 | } |
| 1318 | |
| 1319 | static inline pudval_t pud_val(pud_t pud) |
| 1320 | { |
| 1321 | pudval_t ret; |
| 1322 | |
| 1323 | if (sizeof(pudval_t) > sizeof(long)) |
Jeremy Fitzhardinge | 4767afb | 2009-01-29 01:51:34 -0800 | [diff] [blame] | 1324 | ret = PVOP_CALLEE2(pudval_t, pv_mmu_ops.pud_val, |
| 1325 | pud.pud, (u64)pud.pud >> 32); |
Eduardo Habkost | 9042219 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 1326 | else |
Jeremy Fitzhardinge | 4767afb | 2009-01-29 01:51:34 -0800 | [diff] [blame] | 1327 | ret = PVOP_CALLEE1(pudval_t, pv_mmu_ops.pud_val, |
| 1328 | pud.pud); |
Eduardo Habkost | 9042219 | 2008-01-30 13:33:20 +0100 | [diff] [blame] | 1329 | |
| 1330 | return ret; |
| 1331 | } |
| 1332 | |
| 1333 | static inline void set_pgd(pgd_t *pgdp, pgd_t pgd) |
| 1334 | { |
| 1335 | pgdval_t val = native_pgd_val(pgd); |
| 1336 | |
| 1337 | if (sizeof(pgdval_t) > sizeof(long)) |
| 1338 | PVOP_VCALL3(pv_mmu_ops.set_pgd, pgdp, |
| 1339 | val, (u64)val >> 32); |
| 1340 | else |
| 1341 | PVOP_VCALL2(pv_mmu_ops.set_pgd, pgdp, |
| 1342 | val); |
| 1343 | } |
| 1344 | |
| 1345 | static inline void pgd_clear(pgd_t *pgdp) |
| 1346 | { |
| 1347 | set_pgd(pgdp, __pgd(0)); |
| 1348 | } |
| 1349 | |
| 1350 | static inline void pud_clear(pud_t *pudp) |
| 1351 | { |
| 1352 | set_pud(pudp, __pud(0)); |
| 1353 | } |
| 1354 | |
| 1355 | #endif /* PAGETABLE_LEVELS == 4 */ |
| 1356 | |
Glauber de Oliveira Costa | 1fe9151 | 2008-01-30 13:33:19 +0100 | [diff] [blame] | 1357 | #endif /* PAGETABLE_LEVELS >= 3 */ |
| 1358 | |
Jeremy Fitzhardinge | 4eed80c | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1359 | #ifdef CONFIG_X86_PAE |
| 1360 | /* Special-case pte-setting operations for PAE, which can't update a |
| 1361 | 64-bit pte atomically */ |
| 1362 | static inline void set_pte_atomic(pte_t *ptep, pte_t pte) |
| 1363 | { |
| 1364 | PVOP_VCALL3(pv_mmu_ops.set_pte_atomic, ptep, |
| 1365 | pte.pte, pte.pte >> 32); |
| 1366 | } |
| 1367 | |
Jeremy Fitzhardinge | 4eed80c | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1368 | static inline void pte_clear(struct mm_struct *mm, unsigned long addr, |
| 1369 | pte_t *ptep) |
| 1370 | { |
| 1371 | PVOP_VCALL3(pv_mmu_ops.pte_clear, mm, addr, ptep); |
| 1372 | } |
Jeremy Fitzhardinge | 60b3f62 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1373 | |
| 1374 | static inline void pmd_clear(pmd_t *pmdp) |
| 1375 | { |
| 1376 | PVOP_VCALL1(pv_mmu_ops.pmd_clear, pmdp); |
| 1377 | } |
Jeremy Fitzhardinge | 4eed80c | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1378 | #else /* !CONFIG_X86_PAE */ |
| 1379 | static inline void set_pte_atomic(pte_t *ptep, pte_t pte) |
| 1380 | { |
| 1381 | set_pte(ptep, pte); |
| 1382 | } |
| 1383 | |
Jeremy Fitzhardinge | 4eed80c | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1384 | static inline void pte_clear(struct mm_struct *mm, unsigned long addr, |
| 1385 | pte_t *ptep) |
| 1386 | { |
| 1387 | set_pte_at(mm, addr, ptep, __pte(0)); |
| 1388 | } |
Jeremy Fitzhardinge | 60b3f62 | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1389 | |
| 1390 | static inline void pmd_clear(pmd_t *pmdp) |
| 1391 | { |
| 1392 | set_pmd(pmdp, __pmd(0)); |
| 1393 | } |
Jeremy Fitzhardinge | 4eed80c | 2008-01-30 13:33:15 +0100 | [diff] [blame] | 1394 | #endif /* CONFIG_X86_PAE */ |
| 1395 | |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1396 | /* Lazy mode for batching updates / context switch */ |
| 1397 | enum paravirt_lazy_mode { |
| 1398 | PARAVIRT_LAZY_NONE, |
| 1399 | PARAVIRT_LAZY_MMU, |
| 1400 | PARAVIRT_LAZY_CPU, |
| 1401 | }; |
| 1402 | |
| 1403 | enum paravirt_lazy_mode paravirt_get_lazy_mode(void); |
Jeremy Fitzhardinge | 224101e | 2009-02-18 11:18:57 -0800 | [diff] [blame] | 1404 | void paravirt_start_context_switch(struct task_struct *prev); |
| 1405 | void paravirt_end_context_switch(struct task_struct *next); |
| 1406 | |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1407 | void paravirt_enter_lazy_mmu(void); |
| 1408 | void paravirt_leave_lazy_mmu(void); |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1409 | |
Jeremy Fitzhardinge | 7fd7d83 | 2009-02-17 23:24:03 -0800 | [diff] [blame] | 1410 | #define __HAVE_ARCH_START_CONTEXT_SWITCH |
Jeremy Fitzhardinge | 224101e | 2009-02-18 11:18:57 -0800 | [diff] [blame] | 1411 | static inline void arch_start_context_switch(struct task_struct *prev) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1412 | { |
Jeremy Fitzhardinge | 224101e | 2009-02-18 11:18:57 -0800 | [diff] [blame] | 1413 | PVOP_VCALL1(pv_cpu_ops.start_context_switch, prev); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1414 | } |
| 1415 | |
Jeremy Fitzhardinge | 224101e | 2009-02-18 11:18:57 -0800 | [diff] [blame] | 1416 | static inline void arch_end_context_switch(struct task_struct *next) |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1417 | { |
Jeremy Fitzhardinge | 224101e | 2009-02-18 11:18:57 -0800 | [diff] [blame] | 1418 | PVOP_VCALL1(pv_cpu_ops.end_context_switch, next); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1419 | } |
| 1420 | |
Zachary Amsden | 9226d12 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1421 | #define __HAVE_ARCH_ENTER_LAZY_MMU_MODE |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1422 | static inline void arch_enter_lazy_mmu_mode(void) |
| 1423 | { |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1424 | PVOP_VCALL0(pv_mmu_ops.lazy_mode.enter); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1425 | } |
| 1426 | |
| 1427 | static inline void arch_leave_lazy_mmu_mode(void) |
| 1428 | { |
Jeremy Fitzhardinge | 8965c1c | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1429 | PVOP_VCALL0(pv_mmu_ops.lazy_mode.leave); |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1430 | } |
| 1431 | |
Jeremy Fitzhardinge | d85cf93 | 2009-02-12 10:02:56 -0800 | [diff] [blame] | 1432 | void arch_flush_lazy_mmu_mode(void); |
Zachary Amsden | 9226d12 | 2007-02-13 13:26:21 +0100 | [diff] [blame] | 1433 | |
Jeremy Fitzhardinge | aeaaa59 | 2008-06-17 11:42:01 -0700 | [diff] [blame] | 1434 | static inline void __set_fixmap(unsigned /* enum fixed_addresses */ idx, |
Masami Hiramatsu | 3b3809a | 2009-04-09 10:55:33 -0700 | [diff] [blame] | 1435 | phys_addr_t phys, pgprot_t flags) |
Jeremy Fitzhardinge | aeaaa59 | 2008-06-17 11:42:01 -0700 | [diff] [blame] | 1436 | { |
| 1437 | pv_mmu_ops.set_fixmap(idx, phys, flags); |
| 1438 | } |
| 1439 | |
Jeremy Fitzhardinge | 4587623 | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 1440 | void _paravirt_nop(void); |
Jeremy Fitzhardinge | 41edafd | 2009-01-28 14:35:02 -0800 | [diff] [blame] | 1441 | u32 _paravirt_ident_32(u32); |
| 1442 | u64 _paravirt_ident_64(u64); |
| 1443 | |
Jeremy Fitzhardinge | 4587623 | 2007-05-02 19:27:13 +0200 | [diff] [blame] | 1444 | #define paravirt_nop ((void *)_paravirt_nop) |
| 1445 | |
Jeremy Fitzhardinge | b4ecc12 | 2009-05-13 17:16:55 -0700 | [diff] [blame] | 1446 | #if defined(CONFIG_SMP) && defined(CONFIG_PARAVIRT_SPINLOCKS) |
Ingo Molnar | 4bb689e | 2008-07-09 14:33:33 +0200 | [diff] [blame] | 1447 | |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 1448 | static inline int __raw_spin_is_locked(struct raw_spinlock *lock) |
| 1449 | { |
| 1450 | return PVOP_CALL1(int, pv_lock_ops.spin_is_locked, lock); |
| 1451 | } |
| 1452 | |
| 1453 | static inline int __raw_spin_is_contended(struct raw_spinlock *lock) |
| 1454 | { |
| 1455 | return PVOP_CALL1(int, pv_lock_ops.spin_is_contended, lock); |
| 1456 | } |
Kyle McMartin | a5ef7ca | 2009-02-08 17:39:58 -0500 | [diff] [blame] | 1457 | #define __raw_spin_is_contended __raw_spin_is_contended |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 1458 | |
| 1459 | static __always_inline void __raw_spin_lock(struct raw_spinlock *lock) |
| 1460 | { |
Harvey Harrison | 3217256 | 2008-07-17 14:22:34 -0700 | [diff] [blame] | 1461 | PVOP_VCALL1(pv_lock_ops.spin_lock, lock); |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 1462 | } |
| 1463 | |
Jeremy Fitzhardinge | 63d3a75 | 2008-08-19 13:19:36 -0700 | [diff] [blame] | 1464 | static __always_inline void __raw_spin_lock_flags(struct raw_spinlock *lock, |
| 1465 | unsigned long flags) |
| 1466 | { |
| 1467 | PVOP_VCALL2(pv_lock_ops.spin_lock_flags, lock, flags); |
| 1468 | } |
| 1469 | |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 1470 | static __always_inline int __raw_spin_trylock(struct raw_spinlock *lock) |
| 1471 | { |
| 1472 | return PVOP_CALL1(int, pv_lock_ops.spin_trylock, lock); |
| 1473 | } |
| 1474 | |
| 1475 | static __always_inline void __raw_spin_unlock(struct raw_spinlock *lock) |
| 1476 | { |
Harvey Harrison | 3217256 | 2008-07-17 14:22:34 -0700 | [diff] [blame] | 1477 | PVOP_VCALL1(pv_lock_ops.spin_unlock, lock); |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 1478 | } |
| 1479 | |
Ingo Molnar | 4bb689e | 2008-07-09 14:33:33 +0200 | [diff] [blame] | 1480 | #endif |
| 1481 | |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1482 | /* These all sit in the .parainstructions section to tell us what to patch. */ |
Jeremy Fitzhardinge | 98de032 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1483 | struct paravirt_patch_site { |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1484 | u8 *instr; /* original instructions */ |
| 1485 | u8 instrtype; /* type of this instruction */ |
| 1486 | u8 len; /* length of original instruction */ |
| 1487 | u16 clobbers; /* what registers you may clobber */ |
| 1488 | }; |
| 1489 | |
Jeremy Fitzhardinge | 98de032 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1490 | extern struct paravirt_patch_site __parainstructions[], |
| 1491 | __parainstructions_end[]; |
| 1492 | |
Glauber de Oliveira Costa | 2e47d3e | 2008-01-30 13:32:07 +0100 | [diff] [blame] | 1493 | #ifdef CONFIG_X86_32 |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1494 | #define PV_SAVE_REGS "pushl %ecx; pushl %edx;" |
| 1495 | #define PV_RESTORE_REGS "popl %edx; popl %ecx;" |
| 1496 | |
| 1497 | /* save and restore all caller-save registers, except return value */ |
Jeremy Fitzhardinge | e584f55 | 2009-01-30 23:17:23 -0800 | [diff] [blame] | 1498 | #define PV_SAVE_ALL_CALLER_REGS "pushl %ecx;" |
| 1499 | #define PV_RESTORE_ALL_CALLER_REGS "popl %ecx;" |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1500 | |
Glauber de Oliveira Costa | 2e47d3e | 2008-01-30 13:32:07 +0100 | [diff] [blame] | 1501 | #define PV_FLAGS_ARG "0" |
| 1502 | #define PV_EXTRA_CLOBBERS |
| 1503 | #define PV_VEXTRA_CLOBBERS |
| 1504 | #else |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1505 | /* save and restore all caller-save registers, except return value */ |
| 1506 | #define PV_SAVE_ALL_CALLER_REGS \ |
| 1507 | "push %rcx;" \ |
| 1508 | "push %rdx;" \ |
| 1509 | "push %rsi;" \ |
| 1510 | "push %rdi;" \ |
| 1511 | "push %r8;" \ |
| 1512 | "push %r9;" \ |
| 1513 | "push %r10;" \ |
| 1514 | "push %r11;" |
| 1515 | #define PV_RESTORE_ALL_CALLER_REGS \ |
| 1516 | "pop %r11;" \ |
| 1517 | "pop %r10;" \ |
| 1518 | "pop %r9;" \ |
| 1519 | "pop %r8;" \ |
| 1520 | "pop %rdi;" \ |
| 1521 | "pop %rsi;" \ |
| 1522 | "pop %rdx;" \ |
| 1523 | "pop %rcx;" |
| 1524 | |
Glauber de Oliveira Costa | 2e47d3e | 2008-01-30 13:32:07 +0100 | [diff] [blame] | 1525 | /* We save some registers, but all of them, that's too much. We clobber all |
| 1526 | * caller saved registers but the argument parameter */ |
| 1527 | #define PV_SAVE_REGS "pushq %%rdi;" |
| 1528 | #define PV_RESTORE_REGS "popq %%rdi;" |
Jeremy Fitzhardinge | c24481e | 2008-07-08 15:07:12 -0700 | [diff] [blame] | 1529 | #define PV_EXTRA_CLOBBERS EXTRA_CLOBBERS, "rcx" , "rdx", "rsi" |
| 1530 | #define PV_VEXTRA_CLOBBERS EXTRA_CLOBBERS, "rdi", "rcx" , "rdx", "rsi" |
Glauber de Oliveira Costa | 2e47d3e | 2008-01-30 13:32:07 +0100 | [diff] [blame] | 1531 | #define PV_FLAGS_ARG "D" |
| 1532 | #endif |
| 1533 | |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1534 | /* |
| 1535 | * Generate a thunk around a function which saves all caller-save |
| 1536 | * registers except for the return value. This allows C functions to |
| 1537 | * be called from assembler code where fewer than normal registers are |
| 1538 | * available. It may also help code generation around calls from C |
| 1539 | * code if the common case doesn't use many registers. |
| 1540 | * |
| 1541 | * When a callee is wrapped in a thunk, the caller can assume that all |
| 1542 | * arg regs and all scratch registers are preserved across the |
| 1543 | * call. The return value in rax/eax will not be saved, even for void |
| 1544 | * functions. |
| 1545 | */ |
| 1546 | #define PV_CALLEE_SAVE_REGS_THUNK(func) \ |
| 1547 | extern typeof(func) __raw_callee_save_##func; \ |
| 1548 | static void *__##func##__ __used = func; \ |
| 1549 | \ |
| 1550 | asm(".pushsection .text;" \ |
| 1551 | "__raw_callee_save_" #func ": " \ |
| 1552 | PV_SAVE_ALL_CALLER_REGS \ |
| 1553 | "call " #func ";" \ |
| 1554 | PV_RESTORE_ALL_CALLER_REGS \ |
| 1555 | "ret;" \ |
| 1556 | ".popsection") |
| 1557 | |
| 1558 | /* Get a reference to a callee-save function */ |
| 1559 | #define PV_CALLEE_SAVE(func) \ |
| 1560 | ((struct paravirt_callee_save) { __raw_callee_save_##func }) |
| 1561 | |
| 1562 | /* Promise that "func" already uses the right calling convention */ |
| 1563 | #define __PV_IS_CALLEE_SAVE(func) \ |
| 1564 | ((struct paravirt_callee_save) { func }) |
| 1565 | |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1566 | static inline unsigned long __raw_local_save_flags(void) |
| 1567 | { |
| 1568 | unsigned long f; |
| 1569 | |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1570 | asm volatile(paravirt_alt(PARAVIRT_CALL) |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1571 | : "=a"(f) |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1572 | : paravirt_type(pv_irq_ops.save_fl), |
Jeremy Fitzhardinge | 42c24fa | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1573 | paravirt_clobber(CLBR_EAX) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1574 | : "memory", "cc"); |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1575 | return f; |
| 1576 | } |
| 1577 | |
| 1578 | static inline void raw_local_irq_restore(unsigned long f) |
| 1579 | { |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1580 | asm volatile(paravirt_alt(PARAVIRT_CALL) |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1581 | : "=a"(f) |
Glauber de Oliveira Costa | 2e47d3e | 2008-01-30 13:32:07 +0100 | [diff] [blame] | 1582 | : PV_FLAGS_ARG(f), |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1583 | paravirt_type(pv_irq_ops.restore_fl), |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1584 | paravirt_clobber(CLBR_EAX) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1585 | : "memory", "cc"); |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1586 | } |
| 1587 | |
| 1588 | static inline void raw_local_irq_disable(void) |
| 1589 | { |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1590 | asm volatile(paravirt_alt(PARAVIRT_CALL) |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1591 | : |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1592 | : paravirt_type(pv_irq_ops.irq_disable), |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1593 | paravirt_clobber(CLBR_EAX) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1594 | : "memory", "eax", "cc"); |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1595 | } |
| 1596 | |
| 1597 | static inline void raw_local_irq_enable(void) |
| 1598 | { |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1599 | asm volatile(paravirt_alt(PARAVIRT_CALL) |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1600 | : |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1601 | : paravirt_type(pv_irq_ops.irq_enable), |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1602 | paravirt_clobber(CLBR_EAX) |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1603 | : "memory", "eax", "cc"); |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1604 | } |
| 1605 | |
| 1606 | static inline unsigned long __raw_local_irq_save(void) |
| 1607 | { |
| 1608 | unsigned long f; |
| 1609 | |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1610 | f = __raw_local_save_flags(); |
| 1611 | raw_local_irq_disable(); |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1612 | return f; |
| 1613 | } |
| 1614 | |
Jeremy Fitzhardinge | 74d4aff | 2008-07-07 12:07:50 -0700 | [diff] [blame] | 1615 | |
Jeremy Fitzhardinge | 294688c | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1616 | /* Make sure as little as possible of this mess escapes. */ |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1617 | #undef PARAVIRT_CALL |
Jeremy Fitzhardinge | 1a45b7a | 2007-05-02 19:27:15 +0200 | [diff] [blame] | 1618 | #undef __PVOP_CALL |
| 1619 | #undef __PVOP_VCALL |
Jeremy Fitzhardinge | f8822f4 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1620 | #undef PVOP_VCALL0 |
| 1621 | #undef PVOP_CALL0 |
| 1622 | #undef PVOP_VCALL1 |
| 1623 | #undef PVOP_CALL1 |
| 1624 | #undef PVOP_VCALL2 |
| 1625 | #undef PVOP_CALL2 |
| 1626 | #undef PVOP_VCALL3 |
| 1627 | #undef PVOP_CALL3 |
| 1628 | #undef PVOP_VCALL4 |
| 1629 | #undef PVOP_CALL4 |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1630 | |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 1631 | #else /* __ASSEMBLY__ */ |
| 1632 | |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1633 | #define _PVSITE(ptype, clobbers, ops, word, algn) \ |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1634 | 771:; \ |
| 1635 | ops; \ |
| 1636 | 772:; \ |
| 1637 | .pushsection .parainstructions,"a"; \ |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1638 | .align algn; \ |
| 1639 | word 771b; \ |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1640 | .byte ptype; \ |
| 1641 | .byte 772b-771b; \ |
| 1642 | .short clobbers; \ |
| 1643 | .popsection |
| 1644 | |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1645 | |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 1646 | #define COND_PUSH(set, mask, reg) \ |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1647 | .if ((~(set)) & mask); push %reg; .endif |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 1648 | #define COND_POP(set, mask, reg) \ |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1649 | .if ((~(set)) & mask); pop %reg; .endif |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 1650 | |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1651 | #ifdef CONFIG_X86_64 |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 1652 | |
| 1653 | #define PV_SAVE_REGS(set) \ |
| 1654 | COND_PUSH(set, CLBR_RAX, rax); \ |
| 1655 | COND_PUSH(set, CLBR_RCX, rcx); \ |
| 1656 | COND_PUSH(set, CLBR_RDX, rdx); \ |
| 1657 | COND_PUSH(set, CLBR_RSI, rsi); \ |
| 1658 | COND_PUSH(set, CLBR_RDI, rdi); \ |
| 1659 | COND_PUSH(set, CLBR_R8, r8); \ |
| 1660 | COND_PUSH(set, CLBR_R9, r9); \ |
| 1661 | COND_PUSH(set, CLBR_R10, r10); \ |
| 1662 | COND_PUSH(set, CLBR_R11, r11) |
| 1663 | #define PV_RESTORE_REGS(set) \ |
| 1664 | COND_POP(set, CLBR_R11, r11); \ |
| 1665 | COND_POP(set, CLBR_R10, r10); \ |
| 1666 | COND_POP(set, CLBR_R9, r9); \ |
| 1667 | COND_POP(set, CLBR_R8, r8); \ |
| 1668 | COND_POP(set, CLBR_RDI, rdi); \ |
| 1669 | COND_POP(set, CLBR_RSI, rsi); \ |
| 1670 | COND_POP(set, CLBR_RDX, rdx); \ |
| 1671 | COND_POP(set, CLBR_RCX, rcx); \ |
| 1672 | COND_POP(set, CLBR_RAX, rax) |
| 1673 | |
Glauber de Oliveira Costa | 6057fc8 | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1674 | #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 8) |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1675 | #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .quad, 8) |
Jeremy Fitzhardinge | 491eccb | 2008-06-25 00:19:15 -0400 | [diff] [blame] | 1676 | #define PARA_INDIRECT(addr) *addr(%rip) |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1677 | #else |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 1678 | #define PV_SAVE_REGS(set) \ |
| 1679 | COND_PUSH(set, CLBR_EAX, eax); \ |
| 1680 | COND_PUSH(set, CLBR_EDI, edi); \ |
| 1681 | COND_PUSH(set, CLBR_ECX, ecx); \ |
| 1682 | COND_PUSH(set, CLBR_EDX, edx) |
| 1683 | #define PV_RESTORE_REGS(set) \ |
| 1684 | COND_POP(set, CLBR_EDX, edx); \ |
| 1685 | COND_POP(set, CLBR_ECX, ecx); \ |
| 1686 | COND_POP(set, CLBR_EDI, edi); \ |
| 1687 | COND_POP(set, CLBR_EAX, eax) |
| 1688 | |
Glauber de Oliveira Costa | 6057fc8 | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1689 | #define PARA_PATCH(struct, off) ((PARAVIRT_PATCH_##struct + (off)) / 4) |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1690 | #define PARA_SITE(ptype, clobbers, ops) _PVSITE(ptype, clobbers, ops, .long, 4) |
Jeremy Fitzhardinge | 491eccb | 2008-06-25 00:19:15 -0400 | [diff] [blame] | 1691 | #define PARA_INDIRECT(addr) *%cs:addr |
Glauber de Oliveira Costa | 658be9d | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1692 | #endif |
| 1693 | |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1694 | #define INTERRUPT_RETURN \ |
| 1695 | PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_iret), CLBR_NONE, \ |
Jeremy Fitzhardinge | 491eccb | 2008-06-25 00:19:15 -0400 | [diff] [blame] | 1696 | jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_iret)) |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1697 | |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1698 | #define DISABLE_INTERRUPTS(clobbers) \ |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1699 | PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_disable), clobbers, \ |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1700 | PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \ |
Jeremy Fitzhardinge | 491eccb | 2008-06-25 00:19:15 -0400 | [diff] [blame] | 1701 | call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_disable); \ |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1702 | PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);) |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1703 | |
Jeremy Fitzhardinge | d582203 | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1704 | #define ENABLE_INTERRUPTS(clobbers) \ |
Jeremy Fitzhardinge | 93b1eab | 2007-10-16 11:51:29 -0700 | [diff] [blame] | 1705 | PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_irq_enable), clobbers, \ |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1706 | PV_SAVE_REGS(clobbers | CLBR_CALLEE_SAVE); \ |
Jeremy Fitzhardinge | 491eccb | 2008-06-25 00:19:15 -0400 | [diff] [blame] | 1707 | call PARA_INDIRECT(pv_irq_ops+PV_IRQ_irq_enable); \ |
Jeremy Fitzhardinge | ecb93d1 | 2009-01-28 14:35:05 -0800 | [diff] [blame] | 1708 | PV_RESTORE_REGS(clobbers | CLBR_CALLEE_SAVE);) |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1709 | |
Jeremy Fitzhardinge | 2be2998 | 2008-06-25 00:19:28 -0400 | [diff] [blame] | 1710 | #define USERGS_SYSRET32 \ |
| 1711 | PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret32), \ |
Glauber de Oliveira Costa | 6abcd98 | 2008-01-30 13:30:33 +0100 | [diff] [blame] | 1712 | CLBR_NONE, \ |
Jeremy Fitzhardinge | 2be2998 | 2008-06-25 00:19:28 -0400 | [diff] [blame] | 1713 | jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret32)) |
Glauber de Oliveira Costa | 2e47d3e | 2008-01-30 13:32:07 +0100 | [diff] [blame] | 1714 | |
Glauber de Oliveira Costa | 6057fc8 | 2008-01-30 13:32:06 +0100 | [diff] [blame] | 1715 | #ifdef CONFIG_X86_32 |
Jeremy Fitzhardinge | 491eccb | 2008-06-25 00:19:15 -0400 | [diff] [blame] | 1716 | #define GET_CR0_INTO_EAX \ |
| 1717 | push %ecx; push %edx; \ |
| 1718 | call PARA_INDIRECT(pv_cpu_ops+PV_CPU_read_cr0); \ |
Jeremy Fitzhardinge | 42c24fa | 2007-05-02 19:27:14 +0200 | [diff] [blame] | 1719 | pop %edx; pop %ecx |
Jeremy Fitzhardinge | 2be2998 | 2008-06-25 00:19:28 -0400 | [diff] [blame] | 1720 | |
| 1721 | #define ENABLE_INTERRUPTS_SYSEXIT \ |
| 1722 | PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \ |
| 1723 | CLBR_NONE, \ |
| 1724 | jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit)) |
| 1725 | |
| 1726 | |
| 1727 | #else /* !CONFIG_X86_32 */ |
Jeremy Fitzhardinge | a00394f | 2008-06-25 00:19:30 -0400 | [diff] [blame] | 1728 | |
| 1729 | /* |
| 1730 | * If swapgs is used while the userspace stack is still current, |
| 1731 | * there's no way to call a pvop. The PV replacement *must* be |
| 1732 | * inlined, or the swapgs instruction must be trapped and emulated. |
| 1733 | */ |
| 1734 | #define SWAPGS_UNSAFE_STACK \ |
| 1735 | PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), CLBR_NONE, \ |
| 1736 | swapgs) |
| 1737 | |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 1738 | /* |
| 1739 | * Note: swapgs is very special, and in practise is either going to be |
| 1740 | * implemented with a single "swapgs" instruction or something very |
| 1741 | * special. Either way, we don't need to save any registers for |
| 1742 | * it. |
| 1743 | */ |
Glauber de Oliveira Costa | e801f86 | 2008-01-30 13:32:08 +0100 | [diff] [blame] | 1744 | #define SWAPGS \ |
| 1745 | PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_swapgs), CLBR_NONE, \ |
Jeremy Fitzhardinge | 9104a18 | 2009-01-28 14:35:04 -0800 | [diff] [blame] | 1746 | call PARA_INDIRECT(pv_cpu_ops+PV_CPU_swapgs) \ |
Glauber de Oliveira Costa | e801f86 | 2008-01-30 13:32:08 +0100 | [diff] [blame] | 1747 | ) |
| 1748 | |
Jeremy Fitzhardinge | 491eccb | 2008-06-25 00:19:15 -0400 | [diff] [blame] | 1749 | #define GET_CR2_INTO_RCX \ |
| 1750 | call PARA_INDIRECT(pv_mmu_ops+PV_MMU_read_cr2); \ |
| 1751 | movq %rax, %rcx; \ |
Glauber de Oliveira Costa | 4a8c4c4 | 2008-01-30 13:32:07 +0100 | [diff] [blame] | 1752 | xorq %rax, %rax; |
| 1753 | |
Jeremy Fitzhardinge | fab5842 | 2008-06-25 00:19:31 -0400 | [diff] [blame] | 1754 | #define PARAVIRT_ADJUST_EXCEPTION_FRAME \ |
| 1755 | PARA_SITE(PARA_PATCH(pv_irq_ops, PV_IRQ_adjust_exception_frame), \ |
| 1756 | CLBR_NONE, \ |
| 1757 | call PARA_INDIRECT(pv_irq_ops+PV_IRQ_adjust_exception_frame)) |
| 1758 | |
Jeremy Fitzhardinge | 2be2998 | 2008-06-25 00:19:28 -0400 | [diff] [blame] | 1759 | #define USERGS_SYSRET64 \ |
| 1760 | PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_usergs_sysret64), \ |
Jeremy Fitzhardinge | d75cd22f | 2008-06-25 00:19:26 -0400 | [diff] [blame] | 1761 | CLBR_NONE, \ |
Jeremy Fitzhardinge | 2be2998 | 2008-06-25 00:19:28 -0400 | [diff] [blame] | 1762 | jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_usergs_sysret64)) |
| 1763 | |
| 1764 | #define ENABLE_INTERRUPTS_SYSEXIT32 \ |
| 1765 | PARA_SITE(PARA_PATCH(pv_cpu_ops, PV_CPU_irq_enable_sysexit), \ |
| 1766 | CLBR_NONE, \ |
| 1767 | jmp PARA_INDIRECT(pv_cpu_ops+PV_CPU_irq_enable_sysexit)) |
| 1768 | #endif /* CONFIG_X86_32 */ |
Rusty Russell | 139ec7c | 2006-12-07 02:14:08 +0100 | [diff] [blame] | 1769 | |
Rusty Russell | d3561b7 | 2006-12-07 02:14:07 +0100 | [diff] [blame] | 1770 | #endif /* __ASSEMBLY__ */ |
| 1771 | #endif /* CONFIG_PARAVIRT */ |
H. Peter Anvin | 1965aae | 2008-10-22 22:26:29 -0700 | [diff] [blame] | 1772 | #endif /* _ASM_X86_PARAVIRT_H */ |