Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 1 | /* |
| 2 | * Kernel-based Virtual Machine driver for Linux |
| 3 | * |
| 4 | * This module enables machines with Intel VT-x extensions to run virtual |
| 5 | * machines without emulation or binary translation. |
| 6 | * |
| 7 | * MMU support |
| 8 | * |
| 9 | * Copyright (C) 2006 Qumranet, Inc. |
| 10 | * |
| 11 | * Authors: |
| 12 | * Yaniv Kamay <yaniv@qumranet.com> |
| 13 | * Avi Kivity <avi@qumranet.com> |
| 14 | * |
| 15 | * This work is licensed under the terms of the GNU GPL, version 2. See |
| 16 | * the COPYING file in the top-level directory. |
| 17 | * |
| 18 | */ |
| 19 | |
| 20 | /* |
| 21 | * We need the mmu code to access both 32-bit and 64-bit guest ptes, |
| 22 | * so the code in this file is compiled twice, once per pte size. |
| 23 | */ |
| 24 | |
| 25 | #if PTTYPE == 64 |
| 26 | #define pt_element_t u64 |
| 27 | #define guest_walker guest_walker64 |
| 28 | #define FNAME(name) paging##64_##name |
| 29 | #define PT_BASE_ADDR_MASK PT64_BASE_ADDR_MASK |
| 30 | #define PT_DIR_BASE_ADDR_MASK PT64_DIR_BASE_ADDR_MASK |
| 31 | #define PT_INDEX(addr, level) PT64_INDEX(addr, level) |
| 32 | #define SHADOW_PT_INDEX(addr, level) PT64_INDEX(addr, level) |
| 33 | #define PT_LEVEL_MASK(level) PT64_LEVEL_MASK(level) |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 34 | #define PT_LEVEL_BITS PT64_LEVEL_BITS |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 35 | #ifdef CONFIG_X86_64 |
| 36 | #define PT_MAX_FULL_LEVELS 4 |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 37 | #define CMPXCHG cmpxchg |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 38 | #else |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 39 | #define CMPXCHG cmpxchg64 |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 40 | #define PT_MAX_FULL_LEVELS 2 |
| 41 | #endif |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 42 | #elif PTTYPE == 32 |
| 43 | #define pt_element_t u32 |
| 44 | #define guest_walker guest_walker32 |
| 45 | #define FNAME(name) paging##32_##name |
| 46 | #define PT_BASE_ADDR_MASK PT32_BASE_ADDR_MASK |
| 47 | #define PT_DIR_BASE_ADDR_MASK PT32_DIR_BASE_ADDR_MASK |
| 48 | #define PT_INDEX(addr, level) PT32_INDEX(addr, level) |
| 49 | #define SHADOW_PT_INDEX(addr, level) PT64_INDEX(addr, level) |
| 50 | #define PT_LEVEL_MASK(level) PT32_LEVEL_MASK(level) |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 51 | #define PT_LEVEL_BITS PT32_LEVEL_BITS |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 52 | #define PT_MAX_FULL_LEVELS 2 |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 53 | #define CMPXCHG cmpxchg |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 54 | #else |
| 55 | #error Invalid PTTYPE value |
| 56 | #endif |
| 57 | |
Avi Kivity | 5fb07dd | 2007-11-21 12:35:07 +0200 | [diff] [blame] | 58 | #define gpte_to_gfn FNAME(gpte_to_gfn) |
| 59 | #define gpte_to_gfn_pde FNAME(gpte_to_gfn_pde) |
| 60 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 61 | /* |
| 62 | * The guest_walker structure emulates the behavior of the hardware page |
| 63 | * table walker. |
| 64 | */ |
| 65 | struct guest_walker { |
| 66 | int level; |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 67 | gfn_t table_gfn[PT_MAX_FULL_LEVELS]; |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 68 | pt_element_t ptes[PT_MAX_FULL_LEVELS]; |
| 69 | gpa_t pte_gpa[PT_MAX_FULL_LEVELS]; |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 70 | unsigned pt_access; |
| 71 | unsigned pte_access; |
Avi Kivity | 815af8d | 2007-01-05 16:36:44 -0800 | [diff] [blame] | 72 | gfn_t gfn; |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 73 | u32 error_code; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 74 | }; |
| 75 | |
Avi Kivity | 5fb07dd | 2007-11-21 12:35:07 +0200 | [diff] [blame] | 76 | static gfn_t gpte_to_gfn(pt_element_t gpte) |
| 77 | { |
| 78 | return (gpte & PT_BASE_ADDR_MASK) >> PAGE_SHIFT; |
| 79 | } |
| 80 | |
| 81 | static gfn_t gpte_to_gfn_pde(pt_element_t gpte) |
| 82 | { |
| 83 | return (gpte & PT_DIR_BASE_ADDR_MASK) >> PAGE_SHIFT; |
| 84 | } |
| 85 | |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 86 | static bool FNAME(cmpxchg_gpte)(struct kvm *kvm, |
| 87 | gfn_t table_gfn, unsigned index, |
| 88 | pt_element_t orig_pte, pt_element_t new_pte) |
| 89 | { |
| 90 | pt_element_t ret; |
| 91 | pt_element_t *table; |
| 92 | struct page *page; |
| 93 | |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 94 | down_read(¤t->mm->mmap_sem); |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 95 | page = gfn_to_page(kvm, table_gfn); |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 96 | up_read(¤t->mm->mmap_sem); |
| 97 | |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 98 | table = kmap_atomic(page, KM_USER0); |
| 99 | |
| 100 | ret = CMPXCHG(&table[index], orig_pte, new_pte); |
| 101 | |
| 102 | kunmap_atomic(table, KM_USER0); |
| 103 | |
| 104 | kvm_release_page_dirty(page); |
| 105 | |
| 106 | return (ret != orig_pte); |
| 107 | } |
| 108 | |
Avi Kivity | bedbe4e | 2007-12-09 16:52:56 +0200 | [diff] [blame] | 109 | static unsigned FNAME(gpte_access)(struct kvm_vcpu *vcpu, pt_element_t gpte) |
| 110 | { |
| 111 | unsigned access; |
| 112 | |
| 113 | access = (gpte & (PT_WRITABLE_MASK | PT_USER_MASK)) | ACC_EXEC_MASK; |
| 114 | #if PTTYPE == 64 |
| 115 | if (is_nx(vcpu)) |
| 116 | access &= ~(gpte >> PT64_NX_SHIFT); |
| 117 | #endif |
| 118 | return access; |
| 119 | } |
| 120 | |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 121 | /* |
| 122 | * Fetch a guest pte for a guest virtual address |
| 123 | */ |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 124 | static int FNAME(walk_addr)(struct guest_walker *walker, |
| 125 | struct kvm_vcpu *vcpu, gva_t addr, |
Avi Kivity | 73b1087 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 126 | int write_fault, int user_fault, int fetch_fault) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 127 | { |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 128 | pt_element_t pte; |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 129 | gfn_t table_gfn; |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 130 | unsigned index, pt_access, pte_access; |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 131 | gpa_t pte_gpa; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 132 | |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame^] | 133 | pgprintk("%s: addr %lx\n", __func__, addr); |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 134 | walk: |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 135 | walker->level = vcpu->arch.mmu.root_level; |
| 136 | pte = vcpu->arch.cr3; |
Avi Kivity | 1b0973b | 2007-01-05 16:36:41 -0800 | [diff] [blame] | 137 | #if PTTYPE == 64 |
| 138 | if (!is_long_mode(vcpu)) { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 139 | pte = vcpu->arch.pdptrs[(addr >> 30) & 3]; |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 140 | if (!is_present_pte(pte)) |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 141 | goto not_present; |
Avi Kivity | 1b0973b | 2007-01-05 16:36:41 -0800 | [diff] [blame] | 142 | --walker->level; |
| 143 | } |
| 144 | #endif |
Avi Kivity | a9058ec | 2006-12-29 16:49:37 -0800 | [diff] [blame] | 145 | ASSERT((!is_long_mode(vcpu) && is_pae(vcpu)) || |
Marcelo Tosatti | 24993d5 | 2008-02-14 21:25:39 -0200 | [diff] [blame] | 146 | (vcpu->arch.cr3 & CR3_NONPAE_RESERVED_BITS) == 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 147 | |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 148 | pt_access = ACC_ALL; |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 149 | |
| 150 | for (;;) { |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 151 | index = PT_INDEX(addr, walker->level); |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 152 | |
Avi Kivity | 5fb07dd | 2007-11-21 12:35:07 +0200 | [diff] [blame] | 153 | table_gfn = gpte_to_gfn(pte); |
Avi Kivity | 1755fbc | 2007-11-21 14:44:45 +0200 | [diff] [blame] | 154 | pte_gpa = gfn_to_gpa(table_gfn); |
Izik Eidus | ec8d4ea | 2007-11-19 11:28:19 +0200 | [diff] [blame] | 155 | pte_gpa += index * sizeof(pt_element_t); |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 156 | walker->table_gfn[walker->level - 1] = table_gfn; |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 157 | walker->pte_gpa[walker->level - 1] = pte_gpa; |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame^] | 158 | pgprintk("%s: table_gfn[%d] %lx\n", __func__, |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 159 | walker->level - 1, table_gfn); |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 160 | |
Izik Eidus | ec8d4ea | 2007-11-19 11:28:19 +0200 | [diff] [blame] | 161 | kvm_read_guest(vcpu->kvm, pte_gpa, &pte, sizeof(pte)); |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 162 | |
| 163 | if (!is_present_pte(pte)) |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 164 | goto not_present; |
| 165 | |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 166 | if (write_fault && !is_writeble_pte(pte)) |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 167 | if (user_fault || is_write_protection(vcpu)) |
| 168 | goto access_error; |
| 169 | |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 170 | if (user_fault && !(pte & PT_USER_MASK)) |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 171 | goto access_error; |
| 172 | |
Avi Kivity | 73b1087 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 173 | #if PTTYPE == 64 |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 174 | if (fetch_fault && is_nx(vcpu) && (pte & PT64_NX_MASK)) |
Avi Kivity | 73b1087 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 175 | goto access_error; |
| 176 | #endif |
| 177 | |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 178 | if (!(pte & PT_ACCESSED_MASK)) { |
Avi Kivity | bf3f8e8 | 2007-02-19 14:37:46 +0200 | [diff] [blame] | 179 | mark_page_dirty(vcpu->kvm, table_gfn); |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 180 | if (FNAME(cmpxchg_gpte)(vcpu->kvm, table_gfn, |
| 181 | index, pte, pte|PT_ACCESSED_MASK)) |
| 182 | goto walk; |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 183 | pte |= PT_ACCESSED_MASK; |
Avi Kivity | bf3f8e8 | 2007-02-19 14:37:46 +0200 | [diff] [blame] | 184 | } |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 185 | |
Avi Kivity | bedbe4e | 2007-12-09 16:52:56 +0200 | [diff] [blame] | 186 | pte_access = pt_access & FNAME(gpte_access)(vcpu, pte); |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 187 | |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 188 | walker->ptes[walker->level - 1] = pte; |
| 189 | |
Avi Kivity | 815af8d | 2007-01-05 16:36:44 -0800 | [diff] [blame] | 190 | if (walker->level == PT_PAGE_TABLE_LEVEL) { |
Avi Kivity | 5fb07dd | 2007-11-21 12:35:07 +0200 | [diff] [blame] | 191 | walker->gfn = gpte_to_gfn(pte); |
Avi Kivity | 815af8d | 2007-01-05 16:36:44 -0800 | [diff] [blame] | 192 | break; |
| 193 | } |
| 194 | |
| 195 | if (walker->level == PT_DIRECTORY_LEVEL |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 196 | && (pte & PT_PAGE_SIZE_MASK) |
Avi Kivity | 815af8d | 2007-01-05 16:36:44 -0800 | [diff] [blame] | 197 | && (PTTYPE == 64 || is_pse(vcpu))) { |
Avi Kivity | 5fb07dd | 2007-11-21 12:35:07 +0200 | [diff] [blame] | 198 | walker->gfn = gpte_to_gfn_pde(pte); |
Avi Kivity | 815af8d | 2007-01-05 16:36:44 -0800 | [diff] [blame] | 199 | walker->gfn += PT_INDEX(addr, PT_PAGE_TABLE_LEVEL); |
Avi Kivity | da92852 | 2007-11-21 13:54:47 +0200 | [diff] [blame] | 200 | if (PTTYPE == 32 && is_cpuid_PSE36()) |
| 201 | walker->gfn += pse36_gfn_delta(pte); |
Avi Kivity | 815af8d | 2007-01-05 16:36:44 -0800 | [diff] [blame] | 202 | break; |
| 203 | } |
| 204 | |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 205 | pt_access = pte_access; |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 206 | --walker->level; |
| 207 | } |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 208 | |
| 209 | if (write_fault && !is_dirty_pte(pte)) { |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 210 | bool ret; |
| 211 | |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 212 | mark_page_dirty(vcpu->kvm, table_gfn); |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 213 | ret = FNAME(cmpxchg_gpte)(vcpu->kvm, table_gfn, index, pte, |
| 214 | pte|PT_DIRTY_MASK); |
| 215 | if (ret) |
| 216 | goto walk; |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 217 | pte |= PT_DIRTY_MASK; |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 218 | kvm_mmu_pte_write(vcpu, pte_gpa, (u8 *)&pte, sizeof(pte)); |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 219 | walker->ptes[walker->level - 1] = pte; |
Avi Kivity | 42bf3f0 | 2007-10-17 12:18:47 +0200 | [diff] [blame] | 220 | } |
| 221 | |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 222 | walker->pt_access = pt_access; |
| 223 | walker->pte_access = pte_access; |
| 224 | pgprintk("%s: pte %llx pte_access %x pt_access %x\n", |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame^] | 225 | __func__, (u64)pte, pt_access, pte_access); |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 226 | return 1; |
| 227 | |
| 228 | not_present: |
| 229 | walker->error_code = 0; |
| 230 | goto err; |
| 231 | |
| 232 | access_error: |
| 233 | walker->error_code = PFERR_PRESENT_MASK; |
| 234 | |
| 235 | err: |
| 236 | if (write_fault) |
| 237 | walker->error_code |= PFERR_WRITE_MASK; |
| 238 | if (user_fault) |
| 239 | walker->error_code |= PFERR_USER_MASK; |
Avi Kivity | 73b1087 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 240 | if (fetch_fault) |
| 241 | walker->error_code |= PFERR_FETCH_MASK; |
Shaohua Li | fe55188 | 2007-07-23 14:51:39 +0800 | [diff] [blame] | 242 | return 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 243 | } |
| 244 | |
Avi Kivity | 0028425 | 2007-05-01 16:53:31 +0300 | [diff] [blame] | 245 | static void FNAME(update_pte)(struct kvm_vcpu *vcpu, struct kvm_mmu_page *page, |
Dong, Eddie | 489f1d6 | 2008-01-07 11:14:20 +0200 | [diff] [blame] | 246 | u64 *spte, const void *pte) |
Avi Kivity | 0028425 | 2007-05-01 16:53:31 +0300 | [diff] [blame] | 247 | { |
| 248 | pt_element_t gpte; |
Avi Kivity | 41074d0 | 2007-12-09 17:00:02 +0200 | [diff] [blame] | 249 | unsigned pte_access; |
Avi Kivity | d7824ff | 2007-12-30 12:29:05 +0200 | [diff] [blame] | 250 | struct page *npage; |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 251 | int largepage = vcpu->arch.update_pte.largepage; |
Avi Kivity | 0028425 | 2007-05-01 16:53:31 +0300 | [diff] [blame] | 252 | |
Avi Kivity | 0028425 | 2007-05-01 16:53:31 +0300 | [diff] [blame] | 253 | gpte = *(const pt_element_t *)pte; |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 254 | if (~gpte & (PT_PRESENT_MASK | PT_ACCESSED_MASK)) { |
Dong, Eddie | 489f1d6 | 2008-01-07 11:14:20 +0200 | [diff] [blame] | 255 | if (!is_present_pte(gpte)) |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 256 | set_shadow_pte(spte, shadow_notrap_nonpresent_pte); |
| 257 | return; |
| 258 | } |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame^] | 259 | pgprintk("%s: gpte %llx spte %p\n", __func__, (u64)gpte, spte); |
Avi Kivity | 41074d0 | 2007-12-09 17:00:02 +0200 | [diff] [blame] | 260 | pte_access = page->role.access & FNAME(gpte_access)(vcpu, gpte); |
Avi Kivity | d7824ff | 2007-12-30 12:29:05 +0200 | [diff] [blame] | 261 | if (gpte_to_gfn(gpte) != vcpu->arch.update_pte.gfn) |
| 262 | return; |
| 263 | npage = vcpu->arch.update_pte.page; |
| 264 | if (!npage) |
| 265 | return; |
| 266 | get_page(npage); |
Avi Kivity | 1c4f1fd | 2007-12-09 17:40:31 +0200 | [diff] [blame] | 267 | mmu_set_spte(vcpu, spte, page->role.access, pte_access, 0, 0, |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 268 | gpte & PT_DIRTY_MASK, NULL, largepage, gpte_to_gfn(gpte), |
| 269 | npage); |
Avi Kivity | 0028425 | 2007-05-01 16:53:31 +0300 | [diff] [blame] | 270 | } |
| 271 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 272 | /* |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 273 | * Fetch a shadow pte for a specific level in the paging hierarchy. |
| 274 | */ |
| 275 | static u64 *FNAME(fetch)(struct kvm_vcpu *vcpu, gva_t addr, |
Avi Kivity | 97a0a01 | 2007-05-31 15:08:29 +0300 | [diff] [blame] | 276 | struct guest_walker *walker, |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 277 | int user_fault, int write_fault, int largepage, |
| 278 | int *ptwrite, struct page *page) |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 279 | { |
| 280 | hpa_t shadow_addr; |
| 281 | int level; |
Avi Kivity | ef0197e | 2007-05-30 14:21:51 +0300 | [diff] [blame] | 282 | u64 *shadow_ent; |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 283 | unsigned access = walker->pt_access; |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 284 | |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 285 | if (!is_present_pte(walker->ptes[walker->level - 1])) |
Avi Kivity | ac79c97 | 2007-01-05 16:36:40 -0800 | [diff] [blame] | 286 | return NULL; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 287 | |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 288 | shadow_addr = vcpu->arch.mmu.root_hpa; |
| 289 | level = vcpu->arch.mmu.shadow_root_level; |
Avi Kivity | aef3d3f | 2007-01-05 16:36:41 -0800 | [diff] [blame] | 290 | if (level == PT32E_ROOT_LEVEL) { |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 291 | shadow_addr = vcpu->arch.mmu.pae_root[(addr >> 30) & 3]; |
Avi Kivity | aef3d3f | 2007-01-05 16:36:41 -0800 | [diff] [blame] | 292 | shadow_addr &= PT64_BASE_ADDR_MASK; |
| 293 | --level; |
| 294 | } |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 295 | |
| 296 | for (; ; level--) { |
| 297 | u32 index = SHADOW_PT_INDEX(addr, level); |
Avi Kivity | 25c0de2 | 2007-01-05 16:36:42 -0800 | [diff] [blame] | 298 | struct kvm_mmu_page *shadow_page; |
Avi Kivity | 8c7bb72 | 2006-12-13 00:34:02 -0800 | [diff] [blame] | 299 | u64 shadow_pte; |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 300 | int metaphysical; |
| 301 | gfn_t table_gfn; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 302 | |
Avi Kivity | ef0197e | 2007-05-30 14:21:51 +0300 | [diff] [blame] | 303 | shadow_ent = ((u64 *)__va(shadow_addr)) + index; |
Dong, Eddie | 5882842 | 2008-01-02 14:29:08 +0800 | [diff] [blame] | 304 | if (level == PT_PAGE_TABLE_LEVEL) |
| 305 | break; |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 306 | |
| 307 | if (largepage && level == PT_DIRECTORY_LEVEL) |
| 308 | break; |
| 309 | |
| 310 | if (is_shadow_present_pte(*shadow_ent) |
| 311 | && !is_large_pte(*shadow_ent)) { |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 312 | shadow_addr = *shadow_ent & PT64_BASE_ADDR_MASK; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 313 | continue; |
| 314 | } |
| 315 | |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 316 | if (is_large_pte(*shadow_ent)) |
| 317 | rmap_remove(vcpu->kvm, shadow_ent); |
| 318 | |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 319 | if (level - 1 == PT_PAGE_TABLE_LEVEL |
| 320 | && walker->level == PT_DIRECTORY_LEVEL) { |
| 321 | metaphysical = 1; |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 322 | if (!is_dirty_pte(walker->ptes[level - 1])) |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 323 | access &= ~ACC_WRITE_MASK; |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 324 | table_gfn = gpte_to_gfn(walker->ptes[level - 1]); |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 325 | } else { |
| 326 | metaphysical = 0; |
| 327 | table_gfn = walker->table_gfn[level - 2]; |
| 328 | } |
| 329 | shadow_page = kvm_mmu_get_page(vcpu, table_gfn, addr, level-1, |
Avi Kivity | fe135d2 | 2007-12-09 16:15:46 +0200 | [diff] [blame] | 330 | metaphysical, access, |
Avi Kivity | f7d9c7b | 2008-02-26 22:12:10 +0200 | [diff] [blame] | 331 | shadow_ent); |
| 332 | if (!metaphysical) { |
Marcelo Tosatti | 7ec5458 | 2007-12-20 19:18:23 -0500 | [diff] [blame] | 333 | int r; |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 334 | pt_element_t curr_pte; |
Marcelo Tosatti | 7ec5458 | 2007-12-20 19:18:23 -0500 | [diff] [blame] | 335 | r = kvm_read_guest_atomic(vcpu->kvm, |
| 336 | walker->pte_gpa[level - 2], |
| 337 | &curr_pte, sizeof(curr_pte)); |
Avi Kivity | d7824ff | 2007-12-30 12:29:05 +0200 | [diff] [blame] | 338 | if (r || curr_pte != walker->ptes[level - 2]) { |
| 339 | kvm_release_page_clean(page); |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 340 | return NULL; |
Avi Kivity | d7824ff | 2007-12-30 12:29:05 +0200 | [diff] [blame] | 341 | } |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 342 | } |
Avi Kivity | 47ad8e6 | 2007-05-06 15:50:58 +0300 | [diff] [blame] | 343 | shadow_addr = __pa(shadow_page->spt); |
Avi Kivity | aef3d3f | 2007-01-05 16:36:41 -0800 | [diff] [blame] | 344 | shadow_pte = shadow_addr | PT_PRESENT_MASK | PT_ACCESSED_MASK |
| 345 | | PT_WRITABLE_MASK | PT_USER_MASK; |
Avi Kivity | 8c7bb72 | 2006-12-13 00:34:02 -0800 | [diff] [blame] | 346 | *shadow_ent = shadow_pte; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 347 | } |
Avi Kivity | ef0197e | 2007-05-30 14:21:51 +0300 | [diff] [blame] | 348 | |
Avi Kivity | 1c4f1fd | 2007-12-09 17:40:31 +0200 | [diff] [blame] | 349 | mmu_set_spte(vcpu, shadow_ent, access, walker->pte_access & access, |
Marcelo Tosatti | 7819026 | 2007-12-11 19:12:27 -0500 | [diff] [blame] | 350 | user_fault, write_fault, |
| 351 | walker->ptes[walker->level-1] & PT_DIRTY_MASK, |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 352 | ptwrite, largepage, walker->gfn, page); |
Avi Kivity | 050e649 | 2007-11-21 14:11:49 +0200 | [diff] [blame] | 353 | |
Avi Kivity | ef0197e | 2007-05-30 14:21:51 +0300 | [diff] [blame] | 354 | return shadow_ent; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 355 | } |
| 356 | |
| 357 | /* |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 358 | * Page fault handler. There are several causes for a page fault: |
| 359 | * - there is no shadow pte for the guest pte |
| 360 | * - write access through a shadow pte marked read only so that we can set |
| 361 | * the dirty bit |
| 362 | * - write access to a shadow pte marked read only so we can update the page |
| 363 | * dirty bitmap, when userspace requests it |
| 364 | * - mmio access; in this case we will never install a present shadow pte |
| 365 | * - normal guest page fault due to the guest pte marked not present, not |
| 366 | * writable, or not executable |
| 367 | * |
Avi Kivity | e2dec93 | 2007-01-05 16:36:54 -0800 | [diff] [blame] | 368 | * Returns: 1 if we need to emulate the instruction, 0 otherwise, or |
| 369 | * a negative value on error. |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 370 | */ |
| 371 | static int FNAME(page_fault)(struct kvm_vcpu *vcpu, gva_t addr, |
| 372 | u32 error_code) |
| 373 | { |
| 374 | int write_fault = error_code & PFERR_WRITE_MASK; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 375 | int user_fault = error_code & PFERR_USER_MASK; |
Avi Kivity | 73b1087 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 376 | int fetch_fault = error_code & PFERR_FETCH_MASK; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 377 | struct guest_walker walker; |
| 378 | u64 *shadow_pte; |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 379 | int write_pt = 0; |
Avi Kivity | e2dec93 | 2007-01-05 16:36:54 -0800 | [diff] [blame] | 380 | int r; |
Avi Kivity | d7824ff | 2007-12-30 12:29:05 +0200 | [diff] [blame] | 381 | struct page *page; |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 382 | int largepage = 0; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 383 | |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame^] | 384 | pgprintk("%s: addr %lx err %x\n", __func__, addr, error_code); |
Avi Kivity | 37a7d8b | 2007-01-05 16:36:56 -0800 | [diff] [blame] | 385 | kvm_mmu_audit(vcpu, "pre page fault"); |
Avi Kivity | 714b93d | 2007-01-05 16:36:53 -0800 | [diff] [blame] | 386 | |
Avi Kivity | e2dec93 | 2007-01-05 16:36:54 -0800 | [diff] [blame] | 387 | r = mmu_topup_memory_caches(vcpu); |
| 388 | if (r) |
| 389 | return r; |
Avi Kivity | 714b93d | 2007-01-05 16:36:53 -0800 | [diff] [blame] | 390 | |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 391 | down_read(&vcpu->kvm->slots_lock); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 392 | /* |
| 393 | * Look up the shadow pte for the faulting address. |
| 394 | */ |
Avi Kivity | 73b1087 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 395 | r = FNAME(walk_addr)(&walker, vcpu, addr, write_fault, user_fault, |
| 396 | fetch_fault); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 397 | |
| 398 | /* |
| 399 | * The page is not mapped by the guest. Let the guest handle it. |
| 400 | */ |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 401 | if (!r) { |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame^] | 402 | pgprintk("%s: guest page fault\n", __func__); |
Avi Kivity | 7993ba4 | 2007-01-26 00:56:41 -0800 | [diff] [blame] | 403 | inject_page_fault(vcpu, addr, walker.error_code); |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 404 | vcpu->arch.last_pt_write_count = 0; /* reset fork detector */ |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 405 | up_read(&vcpu->kvm->slots_lock); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 406 | return 0; |
| 407 | } |
| 408 | |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 409 | down_read(¤t->mm->mmap_sem); |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 410 | if (walker.level == PT_DIRECTORY_LEVEL) { |
| 411 | gfn_t large_gfn; |
| 412 | large_gfn = walker.gfn & ~(KVM_PAGES_PER_HPAGE-1); |
| 413 | if (is_largepage_backed(vcpu, large_gfn)) { |
| 414 | walker.gfn = large_gfn; |
| 415 | largepage = 1; |
| 416 | } |
| 417 | } |
Avi Kivity | d7824ff | 2007-12-30 12:29:05 +0200 | [diff] [blame] | 418 | page = gfn_to_page(vcpu->kvm, walker.gfn); |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 419 | up_read(¤t->mm->mmap_sem); |
Avi Kivity | d7824ff | 2007-12-30 12:29:05 +0200 | [diff] [blame] | 420 | |
Avi Kivity | d196e34 | 2008-01-24 11:44:11 +0200 | [diff] [blame] | 421 | /* mmio */ |
| 422 | if (is_error_page(page)) { |
| 423 | pgprintk("gfn %x is mmio\n", walker.gfn); |
| 424 | kvm_release_page_clean(page); |
| 425 | up_read(&vcpu->kvm->slots_lock); |
| 426 | return 1; |
| 427 | } |
| 428 | |
Marcelo Tosatti | aaee2c9 | 2007-12-20 19:18:26 -0500 | [diff] [blame] | 429 | spin_lock(&vcpu->kvm->mmu_lock); |
Avi Kivity | eb787d1 | 2007-12-31 15:27:49 +0200 | [diff] [blame] | 430 | kvm_mmu_free_some_pages(vcpu); |
Avi Kivity | 97a0a01 | 2007-05-31 15:08:29 +0300 | [diff] [blame] | 431 | shadow_pte = FNAME(fetch)(vcpu, addr, &walker, user_fault, write_fault, |
Marcelo Tosatti | 05da455 | 2008-02-23 11:44:30 -0300 | [diff] [blame] | 432 | largepage, &write_pt, page); |
| 433 | |
Harvey Harrison | b8688d5 | 2008-03-03 12:59:56 -0800 | [diff] [blame^] | 434 | pgprintk("%s: shadow pte %p %llx ptwrite %d\n", __func__, |
Avi Kivity | 97a0a01 | 2007-05-31 15:08:29 +0300 | [diff] [blame] | 435 | shadow_pte, *shadow_pte, write_pt); |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 436 | |
Avi Kivity | a25f7e1 | 2007-04-30 17:05:38 +0300 | [diff] [blame] | 437 | if (!write_pt) |
Zhang Xiantao | ad312c7 | 2007-12-13 23:50:52 +0800 | [diff] [blame] | 438 | vcpu->arch.last_pt_write_count = 0; /* reset fork detector */ |
Avi Kivity | a25f7e1 | 2007-04-30 17:05:38 +0300 | [diff] [blame] | 439 | |
Avi Kivity | 1165f5f | 2007-04-19 17:27:43 +0300 | [diff] [blame] | 440 | ++vcpu->stat.pf_fixed; |
Avi Kivity | 37a7d8b | 2007-01-05 16:36:56 -0800 | [diff] [blame] | 441 | kvm_mmu_audit(vcpu, "post page fault (fixed)"); |
Marcelo Tosatti | aaee2c9 | 2007-12-20 19:18:26 -0500 | [diff] [blame] | 442 | spin_unlock(&vcpu->kvm->mmu_lock); |
Izik Eidus | 72dc67a | 2008-02-10 18:04:15 +0200 | [diff] [blame] | 443 | up_read(&vcpu->kvm->slots_lock); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 444 | |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 445 | return write_pt; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 446 | } |
| 447 | |
| 448 | static gpa_t FNAME(gva_to_gpa)(struct kvm_vcpu *vcpu, gva_t vaddr) |
| 449 | { |
| 450 | struct guest_walker walker; |
Avi Kivity | e119d11 | 2007-02-12 00:54:36 -0800 | [diff] [blame] | 451 | gpa_t gpa = UNMAPPED_GVA; |
| 452 | int r; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 453 | |
Avi Kivity | e119d11 | 2007-02-12 00:54:36 -0800 | [diff] [blame] | 454 | r = FNAME(walk_addr)(&walker, vcpu, vaddr, 0, 0, 0); |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 455 | |
Avi Kivity | e119d11 | 2007-02-12 00:54:36 -0800 | [diff] [blame] | 456 | if (r) { |
Avi Kivity | 1755fbc | 2007-11-21 14:44:45 +0200 | [diff] [blame] | 457 | gpa = gfn_to_gpa(walker.gfn); |
Avi Kivity | e119d11 | 2007-02-12 00:54:36 -0800 | [diff] [blame] | 458 | gpa |= vaddr & ~PAGE_MASK; |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 459 | } |
| 460 | |
| 461 | return gpa; |
| 462 | } |
| 463 | |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 464 | static void FNAME(prefetch_page)(struct kvm_vcpu *vcpu, |
| 465 | struct kvm_mmu_page *sp) |
| 466 | { |
Marcelo Tosatti | 7ec5458 | 2007-12-20 19:18:23 -0500 | [diff] [blame] | 467 | int i, offset = 0, r = 0; |
| 468 | pt_element_t pt; |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 469 | |
Avi Kivity | e5a4c8c | 2007-11-20 21:39:54 +0200 | [diff] [blame] | 470 | if (sp->role.metaphysical |
| 471 | || (PTTYPE == 32 && sp->role.level > PT_PAGE_TABLE_LEVEL)) { |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 472 | nonpaging_prefetch_page(vcpu, sp); |
| 473 | return; |
| 474 | } |
| 475 | |
Avi Kivity | e5a4c8c | 2007-11-20 21:39:54 +0200 | [diff] [blame] | 476 | if (PTTYPE == 32) |
| 477 | offset = sp->role.quadrant << PT64_LEVEL_BITS; |
Marcelo Tosatti | 7ec5458 | 2007-12-20 19:18:23 -0500 | [diff] [blame] | 478 | |
| 479 | for (i = 0; i < PT64_ENT_PER_PAGE; ++i) { |
| 480 | gpa_t pte_gpa = gfn_to_gpa(sp->gfn); |
| 481 | pte_gpa += (i+offset) * sizeof(pt_element_t); |
| 482 | |
| 483 | r = kvm_read_guest_atomic(vcpu->kvm, pte_gpa, &pt, |
| 484 | sizeof(pt_element_t)); |
| 485 | if (r || is_present_pte(pt)) |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 486 | sp->spt[i] = shadow_trap_nonpresent_pte; |
| 487 | else |
| 488 | sp->spt[i] = shadow_notrap_nonpresent_pte; |
Marcelo Tosatti | 7ec5458 | 2007-12-20 19:18:23 -0500 | [diff] [blame] | 489 | } |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 490 | } |
| 491 | |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 492 | #undef pt_element_t |
| 493 | #undef guest_walker |
| 494 | #undef FNAME |
| 495 | #undef PT_BASE_ADDR_MASK |
| 496 | #undef PT_INDEX |
| 497 | #undef SHADOW_PT_INDEX |
| 498 | #undef PT_LEVEL_MASK |
Avi Kivity | 6aa8b73 | 2006-12-10 02:21:36 -0800 | [diff] [blame] | 499 | #undef PT_DIR_BASE_ADDR_MASK |
Avi Kivity | c7addb9 | 2007-09-16 18:58:32 +0200 | [diff] [blame] | 500 | #undef PT_LEVEL_BITS |
Avi Kivity | cea0f0e | 2007-01-05 16:36:43 -0800 | [diff] [blame] | 501 | #undef PT_MAX_FULL_LEVELS |
Avi Kivity | 5fb07dd | 2007-11-21 12:35:07 +0200 | [diff] [blame] | 502 | #undef gpte_to_gfn |
| 503 | #undef gpte_to_gfn_pde |
Marcelo Tosatti | b3e4e63 | 2007-12-07 07:56:58 -0500 | [diff] [blame] | 504 | #undef CMPXCHG |