Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> |
| 3 | * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved. |
| 4 | * |
| 5 | * Authors: |
| 6 | * Paul Mackerras <paulus@au1.ibm.com> |
| 7 | * Alexander Graf <agraf@suse.de> |
| 8 | * Kevin Wolf <mail@kevin-wolf.de> |
| 9 | * |
| 10 | * Description: KVM functions specific to running on Book 3S |
| 11 | * processors in hypervisor mode (specifically POWER7 and later). |
| 12 | * |
| 13 | * This file is derived from arch/powerpc/kvm/book3s.c, |
| 14 | * by Alexander Graf <agraf@suse.de>. |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License, version 2, as |
| 18 | * published by the Free Software Foundation. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/kvm_host.h> |
| 22 | #include <linux/err.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/preempt.h> |
| 25 | #include <linux/sched.h> |
| 26 | #include <linux/delay.h> |
Paul Gortmaker | 66b15db | 2011-05-27 10:46:24 -0400 | [diff] [blame] | 27 | #include <linux/export.h> |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 28 | #include <linux/fs.h> |
| 29 | #include <linux/anon_inodes.h> |
| 30 | #include <linux/cpumask.h> |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 31 | #include <linux/spinlock.h> |
| 32 | #include <linux/page-flags.h> |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 33 | #include <linux/srcu.h> |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 34 | |
| 35 | #include <asm/reg.h> |
| 36 | #include <asm/cputable.h> |
| 37 | #include <asm/cacheflush.h> |
| 38 | #include <asm/tlbflush.h> |
| 39 | #include <asm/uaccess.h> |
| 40 | #include <asm/io.h> |
| 41 | #include <asm/kvm_ppc.h> |
| 42 | #include <asm/kvm_book3s.h> |
| 43 | #include <asm/mmu_context.h> |
| 44 | #include <asm/lppaca.h> |
| 45 | #include <asm/processor.h> |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 46 | #include <asm/cputhreads.h> |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 47 | #include <asm/page.h> |
Michael Neuling | de1d924 | 2011-11-09 20:39:49 +0000 | [diff] [blame] | 48 | #include <asm/hvcall.h> |
David Howells | ae3a197 | 2012-03-28 18:30:02 +0100 | [diff] [blame] | 49 | #include <asm/switch_to.h> |
Paul Mackerras | 512691d | 2012-10-15 01:15:41 +0000 | [diff] [blame] | 50 | #include <asm/smp.h> |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 51 | #include <linux/gfp.h> |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 52 | #include <linux/vmalloc.h> |
| 53 | #include <linux/highmem.h> |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 54 | #include <linux/hugetlb.h> |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 55 | #include <linux/module.h> |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 56 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 57 | #include "book3s.h" |
| 58 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 59 | /* #define EXIT_DEBUG */ |
| 60 | /* #define EXIT_DEBUG_SIMPLE */ |
| 61 | /* #define EXIT_DEBUG_INT */ |
| 62 | |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 63 | /* Used to indicate that a guest page fault needs to be handled */ |
| 64 | #define RESUME_PAGE_FAULT (RESUME_GUEST | RESUME_FLAG_ARCH1) |
| 65 | |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 66 | /* Used as a "null" value for timebase values */ |
| 67 | #define TB_NIL (~(u64)0) |
| 68 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 69 | static void kvmppc_end_cede(struct kvm_vcpu *vcpu); |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 70 | static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 71 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 72 | static void kvmppc_fast_vcpu_kick_hv(struct kvm_vcpu *vcpu) |
Benjamin Herrenschmidt | 54695c3 | 2013-04-17 20:30:50 +0000 | [diff] [blame] | 73 | { |
| 74 | int me; |
| 75 | int cpu = vcpu->cpu; |
| 76 | wait_queue_head_t *wqp; |
| 77 | |
| 78 | wqp = kvm_arch_vcpu_wq(vcpu); |
| 79 | if (waitqueue_active(wqp)) { |
| 80 | wake_up_interruptible(wqp); |
| 81 | ++vcpu->stat.halt_wakeup; |
| 82 | } |
| 83 | |
| 84 | me = get_cpu(); |
| 85 | |
| 86 | /* CPU points to the first thread of the core */ |
| 87 | if (cpu != me && cpu >= 0 && cpu < nr_cpu_ids) { |
| 88 | int real_cpu = cpu + vcpu->arch.ptid; |
| 89 | if (paca[real_cpu].kvm_hstate.xics_phys) |
| 90 | xics_wake_cpu(real_cpu); |
| 91 | else if (cpu_online(cpu)) |
| 92 | smp_send_reschedule(cpu); |
| 93 | } |
| 94 | put_cpu(); |
| 95 | } |
| 96 | |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 97 | /* |
| 98 | * We use the vcpu_load/put functions to measure stolen time. |
| 99 | * Stolen time is counted as time when either the vcpu is able to |
| 100 | * run as part of a virtual core, but the task running the vcore |
| 101 | * is preempted or sleeping, or when the vcpu needs something done |
| 102 | * in the kernel by the task running the vcpu, but that task is |
| 103 | * preempted or sleeping. Those two things have to be counted |
| 104 | * separately, since one of the vcpu tasks will take on the job |
| 105 | * of running the core, and the other vcpu tasks in the vcore will |
| 106 | * sleep waiting for it to do that, but that sleep shouldn't count |
| 107 | * as stolen time. |
| 108 | * |
| 109 | * Hence we accumulate stolen time when the vcpu can run as part of |
| 110 | * a vcore using vc->stolen_tb, and the stolen time when the vcpu |
| 111 | * needs its task to do other things in the kernel (for example, |
| 112 | * service a page fault) in busy_stolen. We don't accumulate |
| 113 | * stolen time for a vcore when it is inactive, or for a vcpu |
| 114 | * when it is in state RUNNING or NOTREADY. NOTREADY is a bit of |
| 115 | * a misnomer; it means that the vcpu task is not executing in |
| 116 | * the KVM_VCPU_RUN ioctl, i.e. it is in userspace or elsewhere in |
| 117 | * the kernel. We don't have any way of dividing up that time |
| 118 | * between time that the vcpu is genuinely stopped, time that |
| 119 | * the task is actively working on behalf of the vcpu, and time |
| 120 | * that the task is preempted, so we don't count any of it as |
| 121 | * stolen. |
| 122 | * |
| 123 | * Updates to busy_stolen are protected by arch.tbacct_lock; |
| 124 | * updates to vc->stolen_tb are protected by the arch.tbacct_lock |
| 125 | * of the vcpu that has taken responsibility for running the vcore |
| 126 | * (i.e. vc->runner). The stolen times are measured in units of |
| 127 | * timebase ticks. (Note that the != TB_NIL checks below are |
| 128 | * purely defensive; they should never fail.) |
| 129 | */ |
| 130 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 131 | static void kvmppc_core_vcpu_load_hv(struct kvm_vcpu *vcpu, int cpu) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 132 | { |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 133 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 134 | unsigned long flags; |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 135 | |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 136 | spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 137 | if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE && |
| 138 | vc->preempt_tb != TB_NIL) { |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 139 | vc->stolen_tb += mftb() - vc->preempt_tb; |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 140 | vc->preempt_tb = TB_NIL; |
| 141 | } |
| 142 | if (vcpu->arch.state == KVMPPC_VCPU_BUSY_IN_HOST && |
| 143 | vcpu->arch.busy_preempt != TB_NIL) { |
| 144 | vcpu->arch.busy_stolen += mftb() - vcpu->arch.busy_preempt; |
| 145 | vcpu->arch.busy_preempt = TB_NIL; |
| 146 | } |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 147 | spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 148 | } |
| 149 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 150 | static void kvmppc_core_vcpu_put_hv(struct kvm_vcpu *vcpu) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 151 | { |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 152 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 153 | unsigned long flags; |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 154 | |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 155 | spin_lock_irqsave(&vcpu->arch.tbacct_lock, flags); |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 156 | if (vc->runner == vcpu && vc->vcore_state != VCORE_INACTIVE) |
| 157 | vc->preempt_tb = mftb(); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 158 | if (vcpu->arch.state == KVMPPC_VCPU_BUSY_IN_HOST) |
| 159 | vcpu->arch.busy_preempt = mftb(); |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 160 | spin_unlock_irqrestore(&vcpu->arch.tbacct_lock, flags); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 161 | } |
| 162 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 163 | static void kvmppc_set_msr_hv(struct kvm_vcpu *vcpu, u64 msr) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 164 | { |
| 165 | vcpu->arch.shregs.msr = msr; |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 166 | kvmppc_end_cede(vcpu); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 167 | } |
| 168 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 169 | void kvmppc_set_pvr_hv(struct kvm_vcpu *vcpu, u32 pvr) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 170 | { |
| 171 | vcpu->arch.pvr = pvr; |
| 172 | } |
| 173 | |
Paul Mackerras | 388cc6e | 2013-09-21 14:35:02 +1000 | [diff] [blame] | 174 | int kvmppc_set_arch_compat(struct kvm_vcpu *vcpu, u32 arch_compat) |
| 175 | { |
| 176 | unsigned long pcr = 0; |
| 177 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
| 178 | |
| 179 | if (arch_compat) { |
| 180 | if (!cpu_has_feature(CPU_FTR_ARCH_206)) |
| 181 | return -EINVAL; /* 970 has no compat mode support */ |
| 182 | |
| 183 | switch (arch_compat) { |
| 184 | case PVR_ARCH_205: |
| 185 | pcr = PCR_ARCH_205; |
| 186 | break; |
| 187 | case PVR_ARCH_206: |
| 188 | case PVR_ARCH_206p: |
| 189 | break; |
| 190 | default: |
| 191 | return -EINVAL; |
| 192 | } |
| 193 | } |
| 194 | |
| 195 | spin_lock(&vc->lock); |
| 196 | vc->arch_compat = arch_compat; |
| 197 | vc->pcr = pcr; |
| 198 | spin_unlock(&vc->lock); |
| 199 | |
| 200 | return 0; |
| 201 | } |
| 202 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 203 | void kvmppc_dump_regs(struct kvm_vcpu *vcpu) |
| 204 | { |
| 205 | int r; |
| 206 | |
| 207 | pr_err("vcpu %p (%d):\n", vcpu, vcpu->vcpu_id); |
| 208 | pr_err("pc = %.16lx msr = %.16llx trap = %x\n", |
| 209 | vcpu->arch.pc, vcpu->arch.shregs.msr, vcpu->arch.trap); |
| 210 | for (r = 0; r < 16; ++r) |
| 211 | pr_err("r%2d = %.16lx r%d = %.16lx\n", |
| 212 | r, kvmppc_get_gpr(vcpu, r), |
| 213 | r+16, kvmppc_get_gpr(vcpu, r+16)); |
| 214 | pr_err("ctr = %.16lx lr = %.16lx\n", |
| 215 | vcpu->arch.ctr, vcpu->arch.lr); |
| 216 | pr_err("srr0 = %.16llx srr1 = %.16llx\n", |
| 217 | vcpu->arch.shregs.srr0, vcpu->arch.shregs.srr1); |
| 218 | pr_err("sprg0 = %.16llx sprg1 = %.16llx\n", |
| 219 | vcpu->arch.shregs.sprg0, vcpu->arch.shregs.sprg1); |
| 220 | pr_err("sprg2 = %.16llx sprg3 = %.16llx\n", |
| 221 | vcpu->arch.shregs.sprg2, vcpu->arch.shregs.sprg3); |
| 222 | pr_err("cr = %.8x xer = %.16lx dsisr = %.8x\n", |
| 223 | vcpu->arch.cr, vcpu->arch.xer, vcpu->arch.shregs.dsisr); |
| 224 | pr_err("dar = %.16llx\n", vcpu->arch.shregs.dar); |
| 225 | pr_err("fault dar = %.16lx dsisr = %.8x\n", |
| 226 | vcpu->arch.fault_dar, vcpu->arch.fault_dsisr); |
| 227 | pr_err("SLB (%d entries):\n", vcpu->arch.slb_max); |
| 228 | for (r = 0; r < vcpu->arch.slb_max; ++r) |
| 229 | pr_err(" ESID = %.16llx VSID = %.16llx\n", |
| 230 | vcpu->arch.slb[r].orige, vcpu->arch.slb[r].origv); |
| 231 | pr_err("lpcr = %.16lx sdr1 = %.16lx last_inst = %.8x\n", |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 232 | vcpu->arch.vcore->lpcr, vcpu->kvm->arch.sdr1, |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 233 | vcpu->arch.last_inst); |
| 234 | } |
| 235 | |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 236 | struct kvm_vcpu *kvmppc_find_vcpu(struct kvm *kvm, int id) |
| 237 | { |
| 238 | int r; |
| 239 | struct kvm_vcpu *v, *ret = NULL; |
| 240 | |
| 241 | mutex_lock(&kvm->lock); |
| 242 | kvm_for_each_vcpu(r, v, kvm) { |
| 243 | if (v->vcpu_id == id) { |
| 244 | ret = v; |
| 245 | break; |
| 246 | } |
| 247 | } |
| 248 | mutex_unlock(&kvm->lock); |
| 249 | return ret; |
| 250 | } |
| 251 | |
| 252 | static void init_vpa(struct kvm_vcpu *vcpu, struct lppaca *vpa) |
| 253 | { |
Anton Blanchard | f13c13a | 2013-08-07 02:01:26 +1000 | [diff] [blame] | 254 | vpa->__old_status |= LPPACA_OLD_SHARED_PROC; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 255 | vpa->yield_count = 1; |
| 256 | } |
| 257 | |
Paul Mackerras | 55b665b | 2012-09-25 20:33:06 +0000 | [diff] [blame] | 258 | static int set_vpa(struct kvm_vcpu *vcpu, struct kvmppc_vpa *v, |
| 259 | unsigned long addr, unsigned long len) |
| 260 | { |
| 261 | /* check address is cacheline aligned */ |
| 262 | if (addr & (L1_CACHE_BYTES - 1)) |
| 263 | return -EINVAL; |
| 264 | spin_lock(&vcpu->arch.vpa_update_lock); |
| 265 | if (v->next_gpa != addr || v->len != len) { |
| 266 | v->next_gpa = addr; |
| 267 | v->len = addr ? len : 0; |
| 268 | v->update_pending = 1; |
| 269 | } |
| 270 | spin_unlock(&vcpu->arch.vpa_update_lock); |
| 271 | return 0; |
| 272 | } |
| 273 | |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 274 | /* Length for a per-processor buffer is passed in at offset 4 in the buffer */ |
| 275 | struct reg_vpa { |
| 276 | u32 dummy; |
| 277 | union { |
| 278 | u16 hword; |
| 279 | u32 word; |
| 280 | } length; |
| 281 | }; |
| 282 | |
| 283 | static int vpa_is_registered(struct kvmppc_vpa *vpap) |
| 284 | { |
| 285 | if (vpap->update_pending) |
| 286 | return vpap->next_gpa != 0; |
| 287 | return vpap->pinned_addr != NULL; |
| 288 | } |
| 289 | |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 290 | static unsigned long do_h_register_vpa(struct kvm_vcpu *vcpu, |
| 291 | unsigned long flags, |
| 292 | unsigned long vcpuid, unsigned long vpa) |
| 293 | { |
| 294 | struct kvm *kvm = vcpu->kvm; |
Paul Mackerras | 93e6024 | 2011-12-12 12:28:55 +0000 | [diff] [blame] | 295 | unsigned long len, nb; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 296 | void *va; |
| 297 | struct kvm_vcpu *tvcpu; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 298 | int err; |
| 299 | int subfunc; |
| 300 | struct kvmppc_vpa *vpap; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 301 | |
| 302 | tvcpu = kvmppc_find_vcpu(kvm, vcpuid); |
| 303 | if (!tvcpu) |
| 304 | return H_PARAMETER; |
| 305 | |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 306 | subfunc = (flags >> H_VPA_FUNC_SHIFT) & H_VPA_FUNC_MASK; |
| 307 | if (subfunc == H_VPA_REG_VPA || subfunc == H_VPA_REG_DTL || |
| 308 | subfunc == H_VPA_REG_SLB) { |
| 309 | /* Registering new area - address must be cache-line aligned */ |
| 310 | if ((vpa & (L1_CACHE_BYTES - 1)) || !vpa) |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 311 | return H_PARAMETER; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 312 | |
| 313 | /* convert logical addr to kernel addr and read length */ |
Paul Mackerras | 93e6024 | 2011-12-12 12:28:55 +0000 | [diff] [blame] | 314 | va = kvmppc_pin_guest_page(kvm, vpa, &nb); |
| 315 | if (va == NULL) |
Paul Mackerras | b2b2f16 | 2011-12-12 12:28:21 +0000 | [diff] [blame] | 316 | return H_PARAMETER; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 317 | if (subfunc == H_VPA_REG_VPA) |
| 318 | len = ((struct reg_vpa *)va)->length.hword; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 319 | else |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 320 | len = ((struct reg_vpa *)va)->length.word; |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 321 | kvmppc_unpin_guest_page(kvm, va, vpa, false); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 322 | |
| 323 | /* Check length */ |
| 324 | if (len > nb || len < sizeof(struct reg_vpa)) |
| 325 | return H_PARAMETER; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 326 | } else { |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 327 | vpa = 0; |
| 328 | len = 0; |
| 329 | } |
| 330 | |
| 331 | err = H_PARAMETER; |
| 332 | vpap = NULL; |
| 333 | spin_lock(&tvcpu->arch.vpa_update_lock); |
| 334 | |
| 335 | switch (subfunc) { |
| 336 | case H_VPA_REG_VPA: /* register VPA */ |
| 337 | if (len < sizeof(struct lppaca)) |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 338 | break; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 339 | vpap = &tvcpu->arch.vpa; |
| 340 | err = 0; |
| 341 | break; |
| 342 | |
| 343 | case H_VPA_REG_DTL: /* register DTL */ |
| 344 | if (len < sizeof(struct dtl_entry)) |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 345 | break; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 346 | len -= len % sizeof(struct dtl_entry); |
| 347 | |
| 348 | /* Check that they have previously registered a VPA */ |
| 349 | err = H_RESOURCE; |
| 350 | if (!vpa_is_registered(&tvcpu->arch.vpa)) |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 351 | break; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 352 | |
| 353 | vpap = &tvcpu->arch.dtl; |
| 354 | err = 0; |
| 355 | break; |
| 356 | |
| 357 | case H_VPA_REG_SLB: /* register SLB shadow buffer */ |
| 358 | /* Check that they have previously registered a VPA */ |
| 359 | err = H_RESOURCE; |
| 360 | if (!vpa_is_registered(&tvcpu->arch.vpa)) |
| 361 | break; |
| 362 | |
| 363 | vpap = &tvcpu->arch.slb_shadow; |
| 364 | err = 0; |
| 365 | break; |
| 366 | |
| 367 | case H_VPA_DEREG_VPA: /* deregister VPA */ |
| 368 | /* Check they don't still have a DTL or SLB buf registered */ |
| 369 | err = H_RESOURCE; |
| 370 | if (vpa_is_registered(&tvcpu->arch.dtl) || |
| 371 | vpa_is_registered(&tvcpu->arch.slb_shadow)) |
| 372 | break; |
| 373 | |
| 374 | vpap = &tvcpu->arch.vpa; |
| 375 | err = 0; |
| 376 | break; |
| 377 | |
| 378 | case H_VPA_DEREG_DTL: /* deregister DTL */ |
| 379 | vpap = &tvcpu->arch.dtl; |
| 380 | err = 0; |
| 381 | break; |
| 382 | |
| 383 | case H_VPA_DEREG_SLB: /* deregister SLB shadow buffer */ |
| 384 | vpap = &tvcpu->arch.slb_shadow; |
| 385 | err = 0; |
| 386 | break; |
| 387 | } |
| 388 | |
| 389 | if (vpap) { |
| 390 | vpap->next_gpa = vpa; |
| 391 | vpap->len = len; |
| 392 | vpap->update_pending = 1; |
| 393 | } |
| 394 | |
| 395 | spin_unlock(&tvcpu->arch.vpa_update_lock); |
| 396 | |
| 397 | return err; |
| 398 | } |
| 399 | |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 400 | static void kvmppc_update_vpa(struct kvm_vcpu *vcpu, struct kvmppc_vpa *vpap) |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 401 | { |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 402 | struct kvm *kvm = vcpu->kvm; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 403 | void *va; |
| 404 | unsigned long nb; |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 405 | unsigned long gpa; |
| 406 | |
| 407 | /* |
| 408 | * We need to pin the page pointed to by vpap->next_gpa, |
| 409 | * but we can't call kvmppc_pin_guest_page under the lock |
| 410 | * as it does get_user_pages() and down_read(). So we |
| 411 | * have to drop the lock, pin the page, then get the lock |
| 412 | * again and check that a new area didn't get registered |
| 413 | * in the meantime. |
| 414 | */ |
| 415 | for (;;) { |
| 416 | gpa = vpap->next_gpa; |
| 417 | spin_unlock(&vcpu->arch.vpa_update_lock); |
| 418 | va = NULL; |
| 419 | nb = 0; |
| 420 | if (gpa) |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 421 | va = kvmppc_pin_guest_page(kvm, gpa, &nb); |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 422 | spin_lock(&vcpu->arch.vpa_update_lock); |
| 423 | if (gpa == vpap->next_gpa) |
| 424 | break; |
| 425 | /* sigh... unpin that one and try again */ |
| 426 | if (va) |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 427 | kvmppc_unpin_guest_page(kvm, va, gpa, false); |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 428 | } |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 429 | |
| 430 | vpap->update_pending = 0; |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 431 | if (va && nb < vpap->len) { |
| 432 | /* |
| 433 | * If it's now too short, it must be that userspace |
| 434 | * has changed the mappings underlying guest memory, |
| 435 | * so unregister the region. |
| 436 | */ |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 437 | kvmppc_unpin_guest_page(kvm, va, gpa, false); |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 438 | va = NULL; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 439 | } |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 440 | if (vpap->pinned_addr) |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 441 | kvmppc_unpin_guest_page(kvm, vpap->pinned_addr, vpap->gpa, |
| 442 | vpap->dirty); |
| 443 | vpap->gpa = gpa; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 444 | vpap->pinned_addr = va; |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 445 | vpap->dirty = false; |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 446 | if (va) |
| 447 | vpap->pinned_end = va + vpap->len; |
| 448 | } |
Paul Mackerras | 93e6024 | 2011-12-12 12:28:55 +0000 | [diff] [blame] | 449 | |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 450 | static void kvmppc_update_vpas(struct kvm_vcpu *vcpu) |
| 451 | { |
Paul Mackerras | 2f12f03 | 2012-10-15 01:17:17 +0000 | [diff] [blame] | 452 | if (!(vcpu->arch.vpa.update_pending || |
| 453 | vcpu->arch.slb_shadow.update_pending || |
| 454 | vcpu->arch.dtl.update_pending)) |
| 455 | return; |
| 456 | |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 457 | spin_lock(&vcpu->arch.vpa_update_lock); |
| 458 | if (vcpu->arch.vpa.update_pending) { |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 459 | kvmppc_update_vpa(vcpu, &vcpu->arch.vpa); |
Paul Mackerras | 55b665b | 2012-09-25 20:33:06 +0000 | [diff] [blame] | 460 | if (vcpu->arch.vpa.pinned_addr) |
| 461 | init_vpa(vcpu, vcpu->arch.vpa.pinned_addr); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 462 | } |
| 463 | if (vcpu->arch.dtl.update_pending) { |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 464 | kvmppc_update_vpa(vcpu, &vcpu->arch.dtl); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 465 | vcpu->arch.dtl_ptr = vcpu->arch.dtl.pinned_addr; |
| 466 | vcpu->arch.dtl_index = 0; |
| 467 | } |
| 468 | if (vcpu->arch.slb_shadow.update_pending) |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 469 | kvmppc_update_vpa(vcpu, &vcpu->arch.slb_shadow); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 470 | spin_unlock(&vcpu->arch.vpa_update_lock); |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 471 | } |
| 472 | |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 473 | /* |
| 474 | * Return the accumulated stolen time for the vcore up until `now'. |
| 475 | * The caller should hold the vcore lock. |
| 476 | */ |
| 477 | static u64 vcore_stolen_time(struct kvmppc_vcore *vc, u64 now) |
| 478 | { |
| 479 | u64 p; |
| 480 | |
| 481 | /* |
| 482 | * If we are the task running the vcore, then since we hold |
| 483 | * the vcore lock, we can't be preempted, so stolen_tb/preempt_tb |
| 484 | * can't be updated, so we don't need the tbacct_lock. |
| 485 | * If the vcore is inactive, it can't become active (since we |
| 486 | * hold the vcore lock), so the vcpu load/put functions won't |
| 487 | * update stolen_tb/preempt_tb, and we don't need tbacct_lock. |
| 488 | */ |
| 489 | if (vc->vcore_state != VCORE_INACTIVE && |
| 490 | vc->runner->arch.run_task != current) { |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 491 | spin_lock_irq(&vc->runner->arch.tbacct_lock); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 492 | p = vc->stolen_tb; |
| 493 | if (vc->preempt_tb != TB_NIL) |
| 494 | p += now - vc->preempt_tb; |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 495 | spin_unlock_irq(&vc->runner->arch.tbacct_lock); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 496 | } else { |
| 497 | p = vc->stolen_tb; |
| 498 | } |
| 499 | return p; |
| 500 | } |
| 501 | |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 502 | static void kvmppc_create_dtl_entry(struct kvm_vcpu *vcpu, |
| 503 | struct kvmppc_vcore *vc) |
| 504 | { |
| 505 | struct dtl_entry *dt; |
| 506 | struct lppaca *vpa; |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 507 | unsigned long stolen; |
| 508 | unsigned long core_stolen; |
| 509 | u64 now; |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 510 | |
| 511 | dt = vcpu->arch.dtl_ptr; |
| 512 | vpa = vcpu->arch.vpa.pinned_addr; |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 513 | now = mftb(); |
| 514 | core_stolen = vcore_stolen_time(vc, now); |
| 515 | stolen = core_stolen - vcpu->arch.stolen_logged; |
| 516 | vcpu->arch.stolen_logged = core_stolen; |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 517 | spin_lock_irq(&vcpu->arch.tbacct_lock); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 518 | stolen += vcpu->arch.busy_stolen; |
| 519 | vcpu->arch.busy_stolen = 0; |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 520 | spin_unlock_irq(&vcpu->arch.tbacct_lock); |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 521 | if (!dt || !vpa) |
| 522 | return; |
| 523 | memset(dt, 0, sizeof(struct dtl_entry)); |
| 524 | dt->dispatch_reason = 7; |
| 525 | dt->processor_id = vc->pcpu + vcpu->arch.ptid; |
Paul Mackerras | 93b0f4d | 2013-09-06 13:17:46 +1000 | [diff] [blame] | 526 | dt->timebase = now + vc->tb_offset; |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 527 | dt->enqueue_to_dispatch_time = stolen; |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 528 | dt->srr0 = kvmppc_get_pc(vcpu); |
| 529 | dt->srr1 = vcpu->arch.shregs.msr; |
| 530 | ++dt; |
| 531 | if (dt == vcpu->arch.dtl.pinned_end) |
| 532 | dt = vcpu->arch.dtl.pinned_addr; |
| 533 | vcpu->arch.dtl_ptr = dt; |
| 534 | /* order writing *dt vs. writing vpa->dtl_idx */ |
| 535 | smp_wmb(); |
| 536 | vpa->dtl_idx = ++vcpu->arch.dtl_index; |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 537 | vcpu->arch.dtl.dirty = true; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 538 | } |
| 539 | |
| 540 | int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu) |
| 541 | { |
| 542 | unsigned long req = kvmppc_get_gpr(vcpu, 3); |
| 543 | unsigned long target, ret = H_SUCCESS; |
| 544 | struct kvm_vcpu *tvcpu; |
Michael Ellerman | 8e591cb | 2013-04-17 20:30:00 +0000 | [diff] [blame] | 545 | int idx, rc; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 546 | |
| 547 | switch (req) { |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 548 | case H_ENTER: |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 549 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 550 | ret = kvmppc_virtmode_h_enter(vcpu, kvmppc_get_gpr(vcpu, 4), |
| 551 | kvmppc_get_gpr(vcpu, 5), |
| 552 | kvmppc_get_gpr(vcpu, 6), |
| 553 | kvmppc_get_gpr(vcpu, 7)); |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 554 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 555 | break; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 556 | case H_CEDE: |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 557 | break; |
| 558 | case H_PROD: |
| 559 | target = kvmppc_get_gpr(vcpu, 4); |
| 560 | tvcpu = kvmppc_find_vcpu(vcpu->kvm, target); |
| 561 | if (!tvcpu) { |
| 562 | ret = H_PARAMETER; |
| 563 | break; |
| 564 | } |
| 565 | tvcpu->arch.prodded = 1; |
| 566 | smp_mb(); |
| 567 | if (vcpu->arch.ceded) { |
| 568 | if (waitqueue_active(&vcpu->wq)) { |
| 569 | wake_up_interruptible(&vcpu->wq); |
| 570 | vcpu->stat.halt_wakeup++; |
| 571 | } |
| 572 | } |
| 573 | break; |
| 574 | case H_CONFER: |
Paul Mackerras | 42d7604 | 2013-09-06 13:23:21 +1000 | [diff] [blame] | 575 | target = kvmppc_get_gpr(vcpu, 4); |
| 576 | if (target == -1) |
| 577 | break; |
| 578 | tvcpu = kvmppc_find_vcpu(vcpu->kvm, target); |
| 579 | if (!tvcpu) { |
| 580 | ret = H_PARAMETER; |
| 581 | break; |
| 582 | } |
| 583 | kvm_vcpu_yield_to(tvcpu); |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 584 | break; |
| 585 | case H_REGISTER_VPA: |
| 586 | ret = do_h_register_vpa(vcpu, kvmppc_get_gpr(vcpu, 4), |
| 587 | kvmppc_get_gpr(vcpu, 5), |
| 588 | kvmppc_get_gpr(vcpu, 6)); |
| 589 | break; |
Michael Ellerman | 8e591cb | 2013-04-17 20:30:00 +0000 | [diff] [blame] | 590 | case H_RTAS: |
| 591 | if (list_empty(&vcpu->kvm->arch.rtas_tokens)) |
| 592 | return RESUME_HOST; |
| 593 | |
| 594 | rc = kvmppc_rtas_hcall(vcpu); |
| 595 | |
| 596 | if (rc == -ENOENT) |
| 597 | return RESUME_HOST; |
| 598 | else if (rc == 0) |
| 599 | break; |
| 600 | |
| 601 | /* Send the error out to userspace via KVM_RUN */ |
| 602 | return rc; |
Benjamin Herrenschmidt | bc5ad3f | 2013-04-17 20:30:26 +0000 | [diff] [blame] | 603 | |
| 604 | case H_XIRR: |
| 605 | case H_CPPR: |
| 606 | case H_EOI: |
| 607 | case H_IPI: |
Paul Mackerras | 8e44ddc | 2013-05-23 15:42:21 +0000 | [diff] [blame] | 608 | case H_IPOLL: |
| 609 | case H_XIRR_X: |
Benjamin Herrenschmidt | bc5ad3f | 2013-04-17 20:30:26 +0000 | [diff] [blame] | 610 | if (kvmppc_xics_enabled(vcpu)) { |
| 611 | ret = kvmppc_xics_hcall(vcpu, req); |
| 612 | break; |
| 613 | } /* fallthrough */ |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 614 | default: |
| 615 | return RESUME_HOST; |
| 616 | } |
| 617 | kvmppc_set_gpr(vcpu, 3, ret); |
| 618 | vcpu->arch.hcall_needed = 0; |
| 619 | return RESUME_GUEST; |
| 620 | } |
| 621 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 622 | static int kvmppc_handle_exit_hv(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 623 | struct task_struct *tsk) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 624 | { |
| 625 | int r = RESUME_HOST; |
| 626 | |
| 627 | vcpu->stat.sum_exits++; |
| 628 | |
| 629 | run->exit_reason = KVM_EXIT_UNKNOWN; |
| 630 | run->ready_for_interrupt_injection = 1; |
| 631 | switch (vcpu->arch.trap) { |
| 632 | /* We're good on these - the host merely wanted to get our attention */ |
| 633 | case BOOK3S_INTERRUPT_HV_DECREMENTER: |
| 634 | vcpu->stat.dec_exits++; |
| 635 | r = RESUME_GUEST; |
| 636 | break; |
| 637 | case BOOK3S_INTERRUPT_EXTERNAL: |
| 638 | vcpu->stat.ext_intr_exits++; |
| 639 | r = RESUME_GUEST; |
| 640 | break; |
| 641 | case BOOK3S_INTERRUPT_PERFMON: |
| 642 | r = RESUME_GUEST; |
| 643 | break; |
Paul Mackerras | b4072df | 2012-11-23 22:37:50 +0000 | [diff] [blame] | 644 | case BOOK3S_INTERRUPT_MACHINE_CHECK: |
| 645 | /* |
| 646 | * Deliver a machine check interrupt to the guest. |
| 647 | * We have to do this, even if the host has handled the |
| 648 | * machine check, because machine checks use SRR0/1 and |
| 649 | * the interrupt might have trashed guest state in them. |
| 650 | */ |
| 651 | kvmppc_book3s_queue_irqprio(vcpu, |
| 652 | BOOK3S_INTERRUPT_MACHINE_CHECK); |
| 653 | r = RESUME_GUEST; |
| 654 | break; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 655 | case BOOK3S_INTERRUPT_PROGRAM: |
| 656 | { |
| 657 | ulong flags; |
| 658 | /* |
| 659 | * Normally program interrupts are delivered directly |
| 660 | * to the guest by the hardware, but we can get here |
| 661 | * as a result of a hypervisor emulation interrupt |
| 662 | * (e40) getting turned into a 700 by BML RTAS. |
| 663 | */ |
| 664 | flags = vcpu->arch.shregs.msr & 0x1f0000ull; |
| 665 | kvmppc_core_queue_program(vcpu, flags); |
| 666 | r = RESUME_GUEST; |
| 667 | break; |
| 668 | } |
| 669 | case BOOK3S_INTERRUPT_SYSCALL: |
| 670 | { |
| 671 | /* hcall - punt to userspace */ |
| 672 | int i; |
| 673 | |
| 674 | if (vcpu->arch.shregs.msr & MSR_PR) { |
| 675 | /* sc 1 from userspace - reflect to guest syscall */ |
| 676 | kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_SYSCALL); |
| 677 | r = RESUME_GUEST; |
| 678 | break; |
| 679 | } |
| 680 | run->papr_hcall.nr = kvmppc_get_gpr(vcpu, 3); |
| 681 | for (i = 0; i < 9; ++i) |
| 682 | run->papr_hcall.args[i] = kvmppc_get_gpr(vcpu, 4 + i); |
| 683 | run->exit_reason = KVM_EXIT_PAPR_HCALL; |
| 684 | vcpu->arch.hcall_needed = 1; |
| 685 | r = RESUME_HOST; |
| 686 | break; |
| 687 | } |
| 688 | /* |
Paul Mackerras | 342d3db | 2011-12-12 12:38:05 +0000 | [diff] [blame] | 689 | * We get these next two if the guest accesses a page which it thinks |
| 690 | * it has mapped but which is not actually present, either because |
| 691 | * it is for an emulated I/O device or because the corresonding |
| 692 | * host page has been paged out. Any other HDSI/HISI interrupts |
| 693 | * have been handled already. |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 694 | */ |
| 695 | case BOOK3S_INTERRUPT_H_DATA_STORAGE: |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 696 | r = RESUME_PAGE_FAULT; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 697 | break; |
| 698 | case BOOK3S_INTERRUPT_H_INST_STORAGE: |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 699 | vcpu->arch.fault_dar = kvmppc_get_pc(vcpu); |
| 700 | vcpu->arch.fault_dsisr = 0; |
| 701 | r = RESUME_PAGE_FAULT; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 702 | break; |
| 703 | /* |
| 704 | * This occurs if the guest executes an illegal instruction. |
| 705 | * We just generate a program interrupt to the guest, since |
| 706 | * we don't emulate any guest instructions at this stage. |
| 707 | */ |
| 708 | case BOOK3S_INTERRUPT_H_EMUL_ASSIST: |
| 709 | kvmppc_core_queue_program(vcpu, 0x80000); |
| 710 | r = RESUME_GUEST; |
| 711 | break; |
| 712 | default: |
| 713 | kvmppc_dump_regs(vcpu); |
| 714 | printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n", |
| 715 | vcpu->arch.trap, kvmppc_get_pc(vcpu), |
| 716 | vcpu->arch.shregs.msr); |
Paul Mackerras | f3271d4 | 2013-09-20 14:52:41 +1000 | [diff] [blame] | 717 | run->hw.hardware_exit_reason = vcpu->arch.trap; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 718 | r = RESUME_HOST; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 719 | break; |
| 720 | } |
| 721 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 722 | return r; |
| 723 | } |
| 724 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 725 | static int kvm_arch_vcpu_ioctl_get_sregs_hv(struct kvm_vcpu *vcpu, |
| 726 | struct kvm_sregs *sregs) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 727 | { |
| 728 | int i; |
| 729 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 730 | memset(sregs, 0, sizeof(struct kvm_sregs)); |
Aneesh Kumar K.V | 8791644 | 2013-08-22 17:08:39 +0530 | [diff] [blame] | 731 | sregs->pvr = vcpu->arch.pvr; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 732 | for (i = 0; i < vcpu->arch.slb_max; i++) { |
| 733 | sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige; |
| 734 | sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv; |
| 735 | } |
| 736 | |
| 737 | return 0; |
| 738 | } |
| 739 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 740 | static int kvm_arch_vcpu_ioctl_set_sregs_hv(struct kvm_vcpu *vcpu, |
| 741 | struct kvm_sregs *sregs) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 742 | { |
| 743 | int i, j; |
| 744 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 745 | kvmppc_set_pvr_hv(vcpu, sregs->pvr); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 746 | |
| 747 | j = 0; |
| 748 | for (i = 0; i < vcpu->arch.slb_nr; i++) { |
| 749 | if (sregs->u.s.ppc64.slb[i].slbe & SLB_ESID_V) { |
| 750 | vcpu->arch.slb[j].orige = sregs->u.s.ppc64.slb[i].slbe; |
| 751 | vcpu->arch.slb[j].origv = sregs->u.s.ppc64.slb[i].slbv; |
| 752 | ++j; |
| 753 | } |
| 754 | } |
| 755 | vcpu->arch.slb_max = j; |
| 756 | |
| 757 | return 0; |
| 758 | } |
| 759 | |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 760 | static void kvmppc_set_lpcr(struct kvm_vcpu *vcpu, u64 new_lpcr) |
| 761 | { |
| 762 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
| 763 | u64 mask; |
| 764 | |
| 765 | spin_lock(&vc->lock); |
| 766 | /* |
| 767 | * Userspace can only modify DPFD (default prefetch depth), |
| 768 | * ILE (interrupt little-endian) and TC (translation control). |
| 769 | */ |
| 770 | mask = LPCR_DPFD | LPCR_ILE | LPCR_TC; |
| 771 | vc->lpcr = (vc->lpcr & ~mask) | (new_lpcr & mask); |
| 772 | spin_unlock(&vc->lock); |
| 773 | } |
| 774 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 775 | static int kvmppc_get_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, |
| 776 | union kvmppc_one_reg *val) |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 777 | { |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 778 | int r = 0; |
| 779 | long int i; |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 780 | |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 781 | switch (id) { |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 782 | case KVM_REG_PPC_HIOR: |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 783 | *val = get_reg_val(id, 0); |
| 784 | break; |
| 785 | case KVM_REG_PPC_DABR: |
| 786 | *val = get_reg_val(id, vcpu->arch.dabr); |
| 787 | break; |
| 788 | case KVM_REG_PPC_DSCR: |
| 789 | *val = get_reg_val(id, vcpu->arch.dscr); |
| 790 | break; |
| 791 | case KVM_REG_PPC_PURR: |
| 792 | *val = get_reg_val(id, vcpu->arch.purr); |
| 793 | break; |
| 794 | case KVM_REG_PPC_SPURR: |
| 795 | *val = get_reg_val(id, vcpu->arch.spurr); |
| 796 | break; |
| 797 | case KVM_REG_PPC_AMR: |
| 798 | *val = get_reg_val(id, vcpu->arch.amr); |
| 799 | break; |
| 800 | case KVM_REG_PPC_UAMOR: |
| 801 | *val = get_reg_val(id, vcpu->arch.uamor); |
| 802 | break; |
| 803 | case KVM_REG_PPC_MMCR0 ... KVM_REG_PPC_MMCRA: |
| 804 | i = id - KVM_REG_PPC_MMCR0; |
| 805 | *val = get_reg_val(id, vcpu->arch.mmcr[i]); |
| 806 | break; |
| 807 | case KVM_REG_PPC_PMC1 ... KVM_REG_PPC_PMC8: |
| 808 | i = id - KVM_REG_PPC_PMC1; |
| 809 | *val = get_reg_val(id, vcpu->arch.pmc[i]); |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 810 | break; |
Paul Mackerras | 1494178 | 2013-09-06 13:11:18 +1000 | [diff] [blame] | 811 | case KVM_REG_PPC_SIAR: |
| 812 | *val = get_reg_val(id, vcpu->arch.siar); |
| 813 | break; |
| 814 | case KVM_REG_PPC_SDAR: |
| 815 | *val = get_reg_val(id, vcpu->arch.sdar); |
| 816 | break; |
Paul Mackerras | a8bd19e | 2012-09-25 20:32:30 +0000 | [diff] [blame] | 817 | #ifdef CONFIG_VSX |
| 818 | case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: |
| 819 | if (cpu_has_feature(CPU_FTR_VSX)) { |
| 820 | /* VSX => FP reg i is stored in arch.vsr[2*i] */ |
| 821 | long int i = id - KVM_REG_PPC_FPR0; |
| 822 | *val = get_reg_val(id, vcpu->arch.vsr[2 * i]); |
| 823 | } else { |
| 824 | /* let generic code handle it */ |
| 825 | r = -EINVAL; |
| 826 | } |
| 827 | break; |
| 828 | case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: |
| 829 | if (cpu_has_feature(CPU_FTR_VSX)) { |
| 830 | long int i = id - KVM_REG_PPC_VSR0; |
| 831 | val->vsxval[0] = vcpu->arch.vsr[2 * i]; |
| 832 | val->vsxval[1] = vcpu->arch.vsr[2 * i + 1]; |
| 833 | } else { |
| 834 | r = -ENXIO; |
| 835 | } |
| 836 | break; |
| 837 | #endif /* CONFIG_VSX */ |
Paul Mackerras | 55b665b | 2012-09-25 20:33:06 +0000 | [diff] [blame] | 838 | case KVM_REG_PPC_VPA_ADDR: |
| 839 | spin_lock(&vcpu->arch.vpa_update_lock); |
| 840 | *val = get_reg_val(id, vcpu->arch.vpa.next_gpa); |
| 841 | spin_unlock(&vcpu->arch.vpa_update_lock); |
| 842 | break; |
| 843 | case KVM_REG_PPC_VPA_SLB: |
| 844 | spin_lock(&vcpu->arch.vpa_update_lock); |
| 845 | val->vpaval.addr = vcpu->arch.slb_shadow.next_gpa; |
| 846 | val->vpaval.length = vcpu->arch.slb_shadow.len; |
| 847 | spin_unlock(&vcpu->arch.vpa_update_lock); |
| 848 | break; |
| 849 | case KVM_REG_PPC_VPA_DTL: |
| 850 | spin_lock(&vcpu->arch.vpa_update_lock); |
| 851 | val->vpaval.addr = vcpu->arch.dtl.next_gpa; |
| 852 | val->vpaval.length = vcpu->arch.dtl.len; |
| 853 | spin_unlock(&vcpu->arch.vpa_update_lock); |
| 854 | break; |
Paul Mackerras | 93b0f4d | 2013-09-06 13:17:46 +1000 | [diff] [blame] | 855 | case KVM_REG_PPC_TB_OFFSET: |
| 856 | *val = get_reg_val(id, vcpu->arch.vcore->tb_offset); |
| 857 | break; |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 858 | case KVM_REG_PPC_LPCR: |
| 859 | *val = get_reg_val(id, vcpu->arch.vcore->lpcr); |
| 860 | break; |
Paul Mackerras | 4b8473c | 2013-09-20 14:52:39 +1000 | [diff] [blame] | 861 | case KVM_REG_PPC_PPR: |
| 862 | *val = get_reg_val(id, vcpu->arch.ppr); |
| 863 | break; |
Paul Mackerras | 388cc6e | 2013-09-21 14:35:02 +1000 | [diff] [blame] | 864 | case KVM_REG_PPC_ARCH_COMPAT: |
| 865 | *val = get_reg_val(id, vcpu->arch.vcore->arch_compat); |
| 866 | break; |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 867 | default: |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 868 | r = -EINVAL; |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 869 | break; |
| 870 | } |
| 871 | |
| 872 | return r; |
| 873 | } |
| 874 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 875 | static int kvmppc_set_one_reg_hv(struct kvm_vcpu *vcpu, u64 id, |
| 876 | union kvmppc_one_reg *val) |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 877 | { |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 878 | int r = 0; |
| 879 | long int i; |
Paul Mackerras | 55b665b | 2012-09-25 20:33:06 +0000 | [diff] [blame] | 880 | unsigned long addr, len; |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 881 | |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 882 | switch (id) { |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 883 | case KVM_REG_PPC_HIOR: |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 884 | /* Only allow this to be set to zero */ |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 885 | if (set_reg_val(id, *val)) |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 886 | r = -EINVAL; |
| 887 | break; |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 888 | case KVM_REG_PPC_DABR: |
| 889 | vcpu->arch.dabr = set_reg_val(id, *val); |
| 890 | break; |
| 891 | case KVM_REG_PPC_DSCR: |
| 892 | vcpu->arch.dscr = set_reg_val(id, *val); |
| 893 | break; |
| 894 | case KVM_REG_PPC_PURR: |
| 895 | vcpu->arch.purr = set_reg_val(id, *val); |
| 896 | break; |
| 897 | case KVM_REG_PPC_SPURR: |
| 898 | vcpu->arch.spurr = set_reg_val(id, *val); |
| 899 | break; |
| 900 | case KVM_REG_PPC_AMR: |
| 901 | vcpu->arch.amr = set_reg_val(id, *val); |
| 902 | break; |
| 903 | case KVM_REG_PPC_UAMOR: |
| 904 | vcpu->arch.uamor = set_reg_val(id, *val); |
| 905 | break; |
| 906 | case KVM_REG_PPC_MMCR0 ... KVM_REG_PPC_MMCRA: |
| 907 | i = id - KVM_REG_PPC_MMCR0; |
| 908 | vcpu->arch.mmcr[i] = set_reg_val(id, *val); |
| 909 | break; |
| 910 | case KVM_REG_PPC_PMC1 ... KVM_REG_PPC_PMC8: |
| 911 | i = id - KVM_REG_PPC_PMC1; |
| 912 | vcpu->arch.pmc[i] = set_reg_val(id, *val); |
| 913 | break; |
Paul Mackerras | 1494178 | 2013-09-06 13:11:18 +1000 | [diff] [blame] | 914 | case KVM_REG_PPC_SIAR: |
| 915 | vcpu->arch.siar = set_reg_val(id, *val); |
| 916 | break; |
| 917 | case KVM_REG_PPC_SDAR: |
| 918 | vcpu->arch.sdar = set_reg_val(id, *val); |
| 919 | break; |
Paul Mackerras | a8bd19e | 2012-09-25 20:32:30 +0000 | [diff] [blame] | 920 | #ifdef CONFIG_VSX |
| 921 | case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31: |
| 922 | if (cpu_has_feature(CPU_FTR_VSX)) { |
| 923 | /* VSX => FP reg i is stored in arch.vsr[2*i] */ |
| 924 | long int i = id - KVM_REG_PPC_FPR0; |
| 925 | vcpu->arch.vsr[2 * i] = set_reg_val(id, *val); |
| 926 | } else { |
| 927 | /* let generic code handle it */ |
| 928 | r = -EINVAL; |
| 929 | } |
| 930 | break; |
| 931 | case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31: |
| 932 | if (cpu_has_feature(CPU_FTR_VSX)) { |
| 933 | long int i = id - KVM_REG_PPC_VSR0; |
| 934 | vcpu->arch.vsr[2 * i] = val->vsxval[0]; |
| 935 | vcpu->arch.vsr[2 * i + 1] = val->vsxval[1]; |
| 936 | } else { |
| 937 | r = -ENXIO; |
| 938 | } |
| 939 | break; |
| 940 | #endif /* CONFIG_VSX */ |
Paul Mackerras | 55b665b | 2012-09-25 20:33:06 +0000 | [diff] [blame] | 941 | case KVM_REG_PPC_VPA_ADDR: |
| 942 | addr = set_reg_val(id, *val); |
| 943 | r = -EINVAL; |
| 944 | if (!addr && (vcpu->arch.slb_shadow.next_gpa || |
| 945 | vcpu->arch.dtl.next_gpa)) |
| 946 | break; |
| 947 | r = set_vpa(vcpu, &vcpu->arch.vpa, addr, sizeof(struct lppaca)); |
| 948 | break; |
| 949 | case KVM_REG_PPC_VPA_SLB: |
| 950 | addr = val->vpaval.addr; |
| 951 | len = val->vpaval.length; |
| 952 | r = -EINVAL; |
| 953 | if (addr && !vcpu->arch.vpa.next_gpa) |
| 954 | break; |
| 955 | r = set_vpa(vcpu, &vcpu->arch.slb_shadow, addr, len); |
| 956 | break; |
| 957 | case KVM_REG_PPC_VPA_DTL: |
| 958 | addr = val->vpaval.addr; |
| 959 | len = val->vpaval.length; |
| 960 | r = -EINVAL; |
Paul Mackerras | 9f8c8c7 | 2012-10-15 01:18:37 +0000 | [diff] [blame] | 961 | if (addr && (len < sizeof(struct dtl_entry) || |
| 962 | !vcpu->arch.vpa.next_gpa)) |
Paul Mackerras | 55b665b | 2012-09-25 20:33:06 +0000 | [diff] [blame] | 963 | break; |
| 964 | len -= len % sizeof(struct dtl_entry); |
| 965 | r = set_vpa(vcpu, &vcpu->arch.dtl, addr, len); |
| 966 | break; |
Paul Mackerras | 93b0f4d | 2013-09-06 13:17:46 +1000 | [diff] [blame] | 967 | case KVM_REG_PPC_TB_OFFSET: |
| 968 | /* round up to multiple of 2^24 */ |
| 969 | vcpu->arch.vcore->tb_offset = |
| 970 | ALIGN(set_reg_val(id, *val), 1UL << 24); |
| 971 | break; |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 972 | case KVM_REG_PPC_LPCR: |
| 973 | kvmppc_set_lpcr(vcpu, set_reg_val(id, *val)); |
| 974 | break; |
Paul Mackerras | 4b8473c | 2013-09-20 14:52:39 +1000 | [diff] [blame] | 975 | case KVM_REG_PPC_PPR: |
| 976 | vcpu->arch.ppr = set_reg_val(id, *val); |
| 977 | break; |
Paul Mackerras | 388cc6e | 2013-09-21 14:35:02 +1000 | [diff] [blame] | 978 | case KVM_REG_PPC_ARCH_COMPAT: |
| 979 | r = kvmppc_set_arch_compat(vcpu, set_reg_val(id, *val)); |
| 980 | break; |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 981 | default: |
Paul Mackerras | a136a8b | 2012-09-25 20:31:56 +0000 | [diff] [blame] | 982 | r = -EINVAL; |
Paul Mackerras | 31f3438 | 2011-12-12 12:26:50 +0000 | [diff] [blame] | 983 | break; |
| 984 | } |
| 985 | |
| 986 | return r; |
| 987 | } |
| 988 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 989 | static struct kvm_vcpu *kvmppc_core_vcpu_create_hv(struct kvm *kvm, |
| 990 | unsigned int id) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 991 | { |
| 992 | struct kvm_vcpu *vcpu; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 993 | int err = -EINVAL; |
| 994 | int core; |
| 995 | struct kvmppc_vcore *vcore; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 996 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 997 | core = id / threads_per_core; |
| 998 | if (core >= KVM_MAX_VCORES) |
| 999 | goto out; |
| 1000 | |
| 1001 | err = -ENOMEM; |
Sasha Levin | 6b75e6b | 2011-12-07 10:24:56 +0200 | [diff] [blame] | 1002 | vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1003 | if (!vcpu) |
| 1004 | goto out; |
| 1005 | |
| 1006 | err = kvm_vcpu_init(vcpu, kvm, id); |
| 1007 | if (err) |
| 1008 | goto free_vcpu; |
| 1009 | |
| 1010 | vcpu->arch.shared = &vcpu->arch.shregs; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1011 | vcpu->arch.mmcr[0] = MMCR0_FC; |
| 1012 | vcpu->arch.ctrl = CTRL_RUNLATCH; |
| 1013 | /* default to host PVR, since we can't spoof it */ |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1014 | kvmppc_set_pvr_hv(vcpu, mfspr(SPRN_PVR)); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 1015 | spin_lock_init(&vcpu->arch.vpa_update_lock); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1016 | spin_lock_init(&vcpu->arch.tbacct_lock); |
| 1017 | vcpu->arch.busy_preempt = TB_NIL; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1018 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1019 | kvmppc_mmu_book3s_hv_init(vcpu); |
| 1020 | |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1021 | vcpu->arch.state = KVMPPC_VCPU_NOTREADY; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1022 | |
| 1023 | init_waitqueue_head(&vcpu->arch.cpu_run); |
| 1024 | |
| 1025 | mutex_lock(&kvm->lock); |
| 1026 | vcore = kvm->arch.vcores[core]; |
| 1027 | if (!vcore) { |
| 1028 | vcore = kzalloc(sizeof(struct kvmppc_vcore), GFP_KERNEL); |
| 1029 | if (vcore) { |
| 1030 | INIT_LIST_HEAD(&vcore->runnable_threads); |
| 1031 | spin_lock_init(&vcore->lock); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1032 | init_waitqueue_head(&vcore->wq); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1033 | vcore->preempt_tb = TB_NIL; |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 1034 | vcore->lpcr = kvm->arch.lpcr; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1035 | } |
| 1036 | kvm->arch.vcores[core] = vcore; |
Paul Mackerras | 1b400ba | 2012-11-21 23:28:08 +0000 | [diff] [blame] | 1037 | kvm->arch.online_vcores++; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1038 | } |
| 1039 | mutex_unlock(&kvm->lock); |
| 1040 | |
| 1041 | if (!vcore) |
| 1042 | goto free_vcpu; |
| 1043 | |
| 1044 | spin_lock(&vcore->lock); |
| 1045 | ++vcore->num_threads; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1046 | spin_unlock(&vcore->lock); |
| 1047 | vcpu->arch.vcore = vcore; |
| 1048 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 1049 | vcpu->arch.cpu_type = KVM_CPU_3S_64; |
| 1050 | kvmppc_sanity_check(vcpu); |
| 1051 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1052 | return vcpu; |
| 1053 | |
| 1054 | free_vcpu: |
Sasha Levin | 6b75e6b | 2011-12-07 10:24:56 +0200 | [diff] [blame] | 1055 | kmem_cache_free(kvm_vcpu_cache, vcpu); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1056 | out: |
| 1057 | return ERR_PTR(err); |
| 1058 | } |
| 1059 | |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 1060 | static void unpin_vpa(struct kvm *kvm, struct kvmppc_vpa *vpa) |
| 1061 | { |
| 1062 | if (vpa->pinned_addr) |
| 1063 | kvmppc_unpin_guest_page(kvm, vpa->pinned_addr, vpa->gpa, |
| 1064 | vpa->dirty); |
| 1065 | } |
| 1066 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1067 | static void kvmppc_core_vcpu_free_hv(struct kvm_vcpu *vcpu) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1068 | { |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 1069 | spin_lock(&vcpu->arch.vpa_update_lock); |
Paul Mackerras | c35635e | 2013-04-18 19:51:04 +0000 | [diff] [blame] | 1070 | unpin_vpa(vcpu->kvm, &vcpu->arch.dtl); |
| 1071 | unpin_vpa(vcpu->kvm, &vcpu->arch.slb_shadow); |
| 1072 | unpin_vpa(vcpu->kvm, &vcpu->arch.vpa); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 1073 | spin_unlock(&vcpu->arch.vpa_update_lock); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1074 | kvm_vcpu_uninit(vcpu); |
Sasha Levin | 6b75e6b | 2011-12-07 10:24:56 +0200 | [diff] [blame] | 1075 | kmem_cache_free(kvm_vcpu_cache, vcpu); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1076 | } |
| 1077 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1078 | static int kvmppc_core_check_requests_hv(struct kvm_vcpu *vcpu) |
| 1079 | { |
| 1080 | /* Indicate we want to get back into the guest */ |
| 1081 | return 1; |
| 1082 | } |
| 1083 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1084 | static void kvmppc_set_timer(struct kvm_vcpu *vcpu) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1085 | { |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1086 | unsigned long dec_nsec, now; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1087 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1088 | now = get_tb(); |
| 1089 | if (now > vcpu->arch.dec_expires) { |
| 1090 | /* decrementer has already gone negative */ |
| 1091 | kvmppc_core_queue_dec(vcpu); |
Scott Wood | 7e28e60e | 2011-11-08 18:23:20 -0600 | [diff] [blame] | 1092 | kvmppc_core_prepare_to_enter(vcpu); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1093 | return; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1094 | } |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1095 | dec_nsec = (vcpu->arch.dec_expires - now) * NSEC_PER_SEC |
| 1096 | / tb_ticks_per_sec; |
| 1097 | hrtimer_start(&vcpu->arch.dec_timer, ktime_set(0, dec_nsec), |
| 1098 | HRTIMER_MODE_REL); |
| 1099 | vcpu->arch.timer_running = 1; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1100 | } |
| 1101 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1102 | static void kvmppc_end_cede(struct kvm_vcpu *vcpu) |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1103 | { |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1104 | vcpu->arch.ceded = 0; |
| 1105 | if (vcpu->arch.timer_running) { |
| 1106 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |
| 1107 | vcpu->arch.timer_running = 0; |
| 1108 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1109 | } |
| 1110 | |
| 1111 | extern int __kvmppc_vcore_entry(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1112 | |
| 1113 | static void kvmppc_remove_runnable(struct kvmppc_vcore *vc, |
| 1114 | struct kvm_vcpu *vcpu) |
| 1115 | { |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1116 | u64 now; |
| 1117 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1118 | if (vcpu->arch.state != KVMPPC_VCPU_RUNNABLE) |
| 1119 | return; |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 1120 | spin_lock_irq(&vcpu->arch.tbacct_lock); |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1121 | now = mftb(); |
| 1122 | vcpu->arch.busy_stolen += vcore_stolen_time(vc, now) - |
| 1123 | vcpu->arch.stolen_logged; |
| 1124 | vcpu->arch.busy_preempt = now; |
| 1125 | vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST; |
Paul Mackerras | bf3d32e | 2013-11-16 17:46:04 +1100 | [diff] [blame^] | 1126 | spin_unlock_irq(&vcpu->arch.tbacct_lock); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1127 | --vc->n_runnable; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1128 | list_del(&vcpu->arch.run_list); |
| 1129 | } |
| 1130 | |
Paul Mackerras | f0888f7 | 2012-02-03 00:54:17 +0000 | [diff] [blame] | 1131 | static int kvmppc_grab_hwthread(int cpu) |
| 1132 | { |
| 1133 | struct paca_struct *tpaca; |
| 1134 | long timeout = 1000; |
| 1135 | |
| 1136 | tpaca = &paca[cpu]; |
| 1137 | |
| 1138 | /* Ensure the thread won't go into the kernel if it wakes */ |
| 1139 | tpaca->kvm_hstate.hwthread_req = 1; |
Paul Mackerras | 7b444c6 | 2012-10-15 01:16:14 +0000 | [diff] [blame] | 1140 | tpaca->kvm_hstate.kvm_vcpu = NULL; |
Paul Mackerras | f0888f7 | 2012-02-03 00:54:17 +0000 | [diff] [blame] | 1141 | |
| 1142 | /* |
| 1143 | * If the thread is already executing in the kernel (e.g. handling |
| 1144 | * a stray interrupt), wait for it to get back to nap mode. |
| 1145 | * The smp_mb() is to ensure that our setting of hwthread_req |
| 1146 | * is visible before we look at hwthread_state, so if this |
| 1147 | * races with the code at system_reset_pSeries and the thread |
| 1148 | * misses our setting of hwthread_req, we are sure to see its |
| 1149 | * setting of hwthread_state, and vice versa. |
| 1150 | */ |
| 1151 | smp_mb(); |
| 1152 | while (tpaca->kvm_hstate.hwthread_state == KVM_HWTHREAD_IN_KERNEL) { |
| 1153 | if (--timeout <= 0) { |
| 1154 | pr_err("KVM: couldn't grab cpu %d\n", cpu); |
| 1155 | return -EBUSY; |
| 1156 | } |
| 1157 | udelay(1); |
| 1158 | } |
| 1159 | return 0; |
| 1160 | } |
| 1161 | |
| 1162 | static void kvmppc_release_hwthread(int cpu) |
| 1163 | { |
| 1164 | struct paca_struct *tpaca; |
| 1165 | |
| 1166 | tpaca = &paca[cpu]; |
| 1167 | tpaca->kvm_hstate.hwthread_req = 0; |
| 1168 | tpaca->kvm_hstate.kvm_vcpu = NULL; |
| 1169 | } |
| 1170 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1171 | static void kvmppc_start_thread(struct kvm_vcpu *vcpu) |
| 1172 | { |
| 1173 | int cpu; |
| 1174 | struct paca_struct *tpaca; |
| 1175 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
| 1176 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1177 | if (vcpu->arch.timer_running) { |
| 1178 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |
| 1179 | vcpu->arch.timer_running = 0; |
| 1180 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1181 | cpu = vc->pcpu + vcpu->arch.ptid; |
| 1182 | tpaca = &paca[cpu]; |
| 1183 | tpaca->kvm_hstate.kvm_vcpu = vcpu; |
| 1184 | tpaca->kvm_hstate.kvm_vcore = vc; |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1185 | tpaca->kvm_hstate.napping = 0; |
| 1186 | vcpu->cpu = vc->pcpu; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1187 | smp_wmb(); |
Michael Neuling | 251da03 | 2011-11-10 16:03:20 +0000 | [diff] [blame] | 1188 | #if defined(CONFIG_PPC_ICP_NATIVE) && defined(CONFIG_SMP) |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1189 | if (vcpu->arch.ptid) { |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1190 | xics_wake_cpu(cpu); |
| 1191 | ++vc->n_woken; |
| 1192 | } |
| 1193 | #endif |
| 1194 | } |
| 1195 | |
| 1196 | static void kvmppc_wait_for_nap(struct kvmppc_vcore *vc) |
| 1197 | { |
| 1198 | int i; |
| 1199 | |
| 1200 | HMT_low(); |
| 1201 | i = 0; |
| 1202 | while (vc->nap_count < vc->n_woken) { |
| 1203 | if (++i >= 1000000) { |
| 1204 | pr_err("kvmppc_wait_for_nap timeout %d %d\n", |
| 1205 | vc->nap_count, vc->n_woken); |
| 1206 | break; |
| 1207 | } |
| 1208 | cpu_relax(); |
| 1209 | } |
| 1210 | HMT_medium(); |
| 1211 | } |
| 1212 | |
| 1213 | /* |
| 1214 | * Check that we are on thread 0 and that any other threads in |
Paul Mackerras | 7b444c6 | 2012-10-15 01:16:14 +0000 | [diff] [blame] | 1215 | * this core are off-line. Then grab the threads so they can't |
| 1216 | * enter the kernel. |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1217 | */ |
| 1218 | static int on_primary_thread(void) |
| 1219 | { |
| 1220 | int cpu = smp_processor_id(); |
| 1221 | int thr = cpu_thread_in_core(cpu); |
| 1222 | |
| 1223 | if (thr) |
| 1224 | return 0; |
| 1225 | while (++thr < threads_per_core) |
| 1226 | if (cpu_online(cpu + thr)) |
| 1227 | return 0; |
Paul Mackerras | 7b444c6 | 2012-10-15 01:16:14 +0000 | [diff] [blame] | 1228 | |
| 1229 | /* Grab all hw threads so they can't go into the kernel */ |
| 1230 | for (thr = 1; thr < threads_per_core; ++thr) { |
| 1231 | if (kvmppc_grab_hwthread(cpu + thr)) { |
| 1232 | /* Couldn't grab one; let the others go */ |
| 1233 | do { |
| 1234 | kvmppc_release_hwthread(cpu + thr); |
| 1235 | } while (--thr > 0); |
| 1236 | return 0; |
| 1237 | } |
| 1238 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1239 | return 1; |
| 1240 | } |
| 1241 | |
| 1242 | /* |
| 1243 | * Run a set of guest threads on a physical core. |
| 1244 | * Called with vc->lock held. |
| 1245 | */ |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1246 | static void kvmppc_run_core(struct kvmppc_vcore *vc) |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1247 | { |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1248 | struct kvm_vcpu *vcpu, *vcpu0, *vnext; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1249 | long ret; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1250 | u64 now; |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 1251 | int ptid, i, need_vpa_update; |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1252 | int srcu_idx; |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1253 | struct kvm_vcpu *vcpus_to_update[threads_per_core]; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1254 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1255 | /* don't start if any threads have a signal pending */ |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 1256 | need_vpa_update = 0; |
| 1257 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) { |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1258 | if (signal_pending(vcpu->arch.run_task)) |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1259 | return; |
| 1260 | if (vcpu->arch.vpa.update_pending || |
| 1261 | vcpu->arch.slb_shadow.update_pending || |
| 1262 | vcpu->arch.dtl.update_pending) |
| 1263 | vcpus_to_update[need_vpa_update++] = vcpu; |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 1264 | } |
| 1265 | |
| 1266 | /* |
| 1267 | * Initialize *vc, in particular vc->vcore_state, so we can |
| 1268 | * drop the vcore lock if necessary. |
| 1269 | */ |
| 1270 | vc->n_woken = 0; |
| 1271 | vc->nap_count = 0; |
| 1272 | vc->entry_exit_count = 0; |
Paul Mackerras | 2f12f03 | 2012-10-15 01:17:17 +0000 | [diff] [blame] | 1273 | vc->vcore_state = VCORE_STARTING; |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 1274 | vc->in_guest = 0; |
| 1275 | vc->napping_threads = 0; |
| 1276 | |
| 1277 | /* |
| 1278 | * Updating any of the vpas requires calling kvmppc_pin_guest_page, |
| 1279 | * which can't be called with any spinlocks held. |
| 1280 | */ |
| 1281 | if (need_vpa_update) { |
| 1282 | spin_unlock(&vc->lock); |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1283 | for (i = 0; i < need_vpa_update; ++i) |
| 1284 | kvmppc_update_vpas(vcpus_to_update[i]); |
Paul Mackerras | 081f323 | 2012-06-01 20:20:24 +1000 | [diff] [blame] | 1285 | spin_lock(&vc->lock); |
| 1286 | } |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1287 | |
| 1288 | /* |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1289 | * Assign physical thread IDs, first to non-ceded vcpus |
| 1290 | * and then to ceded ones. |
| 1291 | */ |
| 1292 | ptid = 0; |
| 1293 | vcpu0 = NULL; |
| 1294 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) { |
| 1295 | if (!vcpu->arch.ceded) { |
| 1296 | if (!ptid) |
| 1297 | vcpu0 = vcpu; |
| 1298 | vcpu->arch.ptid = ptid++; |
| 1299 | } |
| 1300 | } |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1301 | if (!vcpu0) |
| 1302 | goto out; /* nothing to run; should never happen */ |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1303 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) |
| 1304 | if (vcpu->arch.ceded) |
| 1305 | vcpu->arch.ptid = ptid++; |
| 1306 | |
Paul Mackerras | 7b444c6 | 2012-10-15 01:16:14 +0000 | [diff] [blame] | 1307 | /* |
| 1308 | * Make sure we are running on thread 0, and that |
| 1309 | * secondary threads are offline. |
| 1310 | */ |
| 1311 | if (threads_per_core > 1 && !on_primary_thread()) { |
| 1312 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) |
| 1313 | vcpu->arch.ret = -EBUSY; |
| 1314 | goto out; |
| 1315 | } |
| 1316 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1317 | vc->pcpu = smp_processor_id(); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 1318 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) { |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1319 | kvmppc_start_thread(vcpu); |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 1320 | kvmppc_create_dtl_entry(vcpu, vc); |
Paul Mackerras | 2e25aa5 | 2012-02-19 17:46:32 +0000 | [diff] [blame] | 1321 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1322 | |
Paul Mackerras | 2f12f03 | 2012-10-15 01:17:17 +0000 | [diff] [blame] | 1323 | vc->vcore_state = VCORE_RUNNING; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1324 | preempt_disable(); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1325 | spin_unlock(&vc->lock); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1326 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1327 | kvm_guest_enter(); |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1328 | |
| 1329 | srcu_idx = srcu_read_lock(&vcpu0->kvm->srcu); |
| 1330 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1331 | __kvmppc_vcore_entry(NULL, vcpu0); |
| 1332 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1333 | spin_lock(&vc->lock); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1334 | /* disable sending of IPIs on virtual external irqs */ |
| 1335 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) |
| 1336 | vcpu->cpu = -1; |
| 1337 | /* wait for secondary threads to finish writing their state to memory */ |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1338 | if (vc->nap_count < vc->n_woken) |
| 1339 | kvmppc_wait_for_nap(vc); |
Paul Mackerras | 2f12f03 | 2012-10-15 01:17:17 +0000 | [diff] [blame] | 1340 | for (i = 0; i < threads_per_core; ++i) |
| 1341 | kvmppc_release_hwthread(vc->pcpu + i); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1342 | /* prevent other vcpu threads from doing kvmppc_start_thread() now */ |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1343 | vc->vcore_state = VCORE_EXITING; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1344 | spin_unlock(&vc->lock); |
| 1345 | |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1346 | srcu_read_unlock(&vcpu0->kvm->srcu, srcu_idx); |
| 1347 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1348 | /* make sure updates to secondary vcpu structs are visible now */ |
| 1349 | smp_mb(); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1350 | kvm_guest_exit(); |
| 1351 | |
| 1352 | preempt_enable(); |
| 1353 | kvm_resched(vcpu); |
| 1354 | |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1355 | spin_lock(&vc->lock); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1356 | now = get_tb(); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1357 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) { |
| 1358 | /* cancel pending dec exception if dec is positive */ |
| 1359 | if (now < vcpu->arch.dec_expires && |
| 1360 | kvmppc_core_pending_dec(vcpu)) |
| 1361 | kvmppc_core_dequeue_dec(vcpu); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1362 | |
| 1363 | ret = RESUME_GUEST; |
| 1364 | if (vcpu->arch.trap) |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1365 | ret = kvmppc_handle_exit_hv(vcpu->arch.kvm_run, vcpu, |
| 1366 | vcpu->arch.run_task); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1367 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1368 | vcpu->arch.ret = ret; |
| 1369 | vcpu->arch.trap = 0; |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1370 | |
| 1371 | if (vcpu->arch.ceded) { |
| 1372 | if (ret != RESUME_GUEST) |
| 1373 | kvmppc_end_cede(vcpu); |
| 1374 | else |
| 1375 | kvmppc_set_timer(vcpu); |
| 1376 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1377 | } |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1378 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1379 | out: |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1380 | vc->vcore_state = VCORE_INACTIVE; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1381 | list_for_each_entry_safe(vcpu, vnext, &vc->runnable_threads, |
| 1382 | arch.run_list) { |
| 1383 | if (vcpu->arch.ret != RESUME_GUEST) { |
| 1384 | kvmppc_remove_runnable(vc, vcpu); |
| 1385 | wake_up(&vcpu->arch.cpu_run); |
| 1386 | } |
| 1387 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1388 | } |
| 1389 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1390 | /* |
| 1391 | * Wait for some other vcpu thread to execute us, and |
| 1392 | * wake us up when we need to handle something in the host. |
| 1393 | */ |
| 1394 | static void kvmppc_wait_for_exec(struct kvm_vcpu *vcpu, int wait_state) |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1395 | { |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1396 | DEFINE_WAIT(wait); |
| 1397 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1398 | prepare_to_wait(&vcpu->arch.cpu_run, &wait, wait_state); |
| 1399 | if (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE) |
| 1400 | schedule(); |
| 1401 | finish_wait(&vcpu->arch.cpu_run, &wait); |
| 1402 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1403 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1404 | /* |
| 1405 | * All the vcpus in this vcore are idle, so wait for a decrementer |
| 1406 | * or external interrupt to one of the vcpus. vc->lock is held. |
| 1407 | */ |
| 1408 | static void kvmppc_vcore_blocked(struct kvmppc_vcore *vc) |
| 1409 | { |
| 1410 | DEFINE_WAIT(wait); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1411 | |
| 1412 | prepare_to_wait(&vc->wq, &wait, TASK_INTERRUPTIBLE); |
| 1413 | vc->vcore_state = VCORE_SLEEPING; |
| 1414 | spin_unlock(&vc->lock); |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1415 | schedule(); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1416 | finish_wait(&vc->wq, &wait); |
| 1417 | spin_lock(&vc->lock); |
| 1418 | vc->vcore_state = VCORE_INACTIVE; |
| 1419 | } |
| 1420 | |
| 1421 | static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) |
| 1422 | { |
| 1423 | int n_ceded; |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1424 | struct kvmppc_vcore *vc; |
| 1425 | struct kvm_vcpu *v, *vn; |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1426 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1427 | kvm_run->exit_reason = 0; |
| 1428 | vcpu->arch.ret = RESUME_GUEST; |
| 1429 | vcpu->arch.trap = 0; |
Paul Mackerras | 2f12f03 | 2012-10-15 01:17:17 +0000 | [diff] [blame] | 1430 | kvmppc_update_vpas(vcpu); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1431 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1432 | /* |
| 1433 | * Synchronize with other threads in this virtual core |
| 1434 | */ |
| 1435 | vc = vcpu->arch.vcore; |
| 1436 | spin_lock(&vc->lock); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1437 | vcpu->arch.ceded = 0; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1438 | vcpu->arch.run_task = current; |
| 1439 | vcpu->arch.kvm_run = kvm_run; |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1440 | vcpu->arch.stolen_logged = vcore_stolen_time(vc, mftb()); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1441 | vcpu->arch.state = KVMPPC_VCPU_RUNNABLE; |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1442 | vcpu->arch.busy_preempt = TB_NIL; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1443 | list_add_tail(&vcpu->arch.run_list, &vc->runnable_threads); |
| 1444 | ++vc->n_runnable; |
| 1445 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1446 | /* |
| 1447 | * This happens the first time this is called for a vcpu. |
| 1448 | * If the vcore is already running, we may be able to start |
| 1449 | * this thread straight away and have it join in. |
| 1450 | */ |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1451 | if (!signal_pending(current)) { |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1452 | if (vc->vcore_state == VCORE_RUNNING && |
| 1453 | VCORE_EXIT_COUNT(vc) == 0) { |
| 1454 | vcpu->arch.ptid = vc->n_runnable - 1; |
Paul Mackerras | 2f12f03 | 2012-10-15 01:17:17 +0000 | [diff] [blame] | 1455 | kvmppc_create_dtl_entry(vcpu, vc); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1456 | kvmppc_start_thread(vcpu); |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1457 | } else if (vc->vcore_state == VCORE_SLEEPING) { |
| 1458 | wake_up(&vc->wq); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1459 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1460 | |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1461 | } |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1462 | |
| 1463 | while (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE && |
| 1464 | !signal_pending(current)) { |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1465 | if (vc->vcore_state != VCORE_INACTIVE) { |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1466 | spin_unlock(&vc->lock); |
| 1467 | kvmppc_wait_for_exec(vcpu, TASK_INTERRUPTIBLE); |
| 1468 | spin_lock(&vc->lock); |
| 1469 | continue; |
| 1470 | } |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1471 | list_for_each_entry_safe(v, vn, &vc->runnable_threads, |
| 1472 | arch.run_list) { |
Scott Wood | 7e28e60e | 2011-11-08 18:23:20 -0600 | [diff] [blame] | 1473 | kvmppc_core_prepare_to_enter(v); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1474 | if (signal_pending(v->arch.run_task)) { |
| 1475 | kvmppc_remove_runnable(vc, v); |
| 1476 | v->stat.signal_exits++; |
| 1477 | v->arch.kvm_run->exit_reason = KVM_EXIT_INTR; |
| 1478 | v->arch.ret = -EINTR; |
| 1479 | wake_up(&v->arch.cpu_run); |
| 1480 | } |
| 1481 | } |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1482 | if (!vc->n_runnable || vcpu->arch.state != KVMPPC_VCPU_RUNNABLE) |
| 1483 | break; |
| 1484 | vc->runner = vcpu; |
| 1485 | n_ceded = 0; |
Paul Mackerras | 4619ac8 | 2013-04-17 20:31:41 +0000 | [diff] [blame] | 1486 | list_for_each_entry(v, &vc->runnable_threads, arch.run_list) { |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1487 | if (!v->arch.pending_exceptions) |
| 1488 | n_ceded += v->arch.ceded; |
Paul Mackerras | 4619ac8 | 2013-04-17 20:31:41 +0000 | [diff] [blame] | 1489 | else |
| 1490 | v->arch.ceded = 0; |
| 1491 | } |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1492 | if (n_ceded == vc->n_runnable) |
| 1493 | kvmppc_vcore_blocked(vc); |
| 1494 | else |
| 1495 | kvmppc_run_core(vc); |
Paul Mackerras | 0456ec4 | 2012-02-03 00:56:21 +0000 | [diff] [blame] | 1496 | vc->runner = NULL; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1497 | } |
| 1498 | |
Paul Mackerras | 8455d79 | 2012-10-15 01:17:42 +0000 | [diff] [blame] | 1499 | while (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE && |
| 1500 | (vc->vcore_state == VCORE_RUNNING || |
| 1501 | vc->vcore_state == VCORE_EXITING)) { |
| 1502 | spin_unlock(&vc->lock); |
| 1503 | kvmppc_wait_for_exec(vcpu, TASK_UNINTERRUPTIBLE); |
| 1504 | spin_lock(&vc->lock); |
| 1505 | } |
| 1506 | |
| 1507 | if (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE) { |
| 1508 | kvmppc_remove_runnable(vc, vcpu); |
| 1509 | vcpu->stat.signal_exits++; |
| 1510 | kvm_run->exit_reason = KVM_EXIT_INTR; |
| 1511 | vcpu->arch.ret = -EINTR; |
| 1512 | } |
| 1513 | |
| 1514 | if (vc->n_runnable && vc->vcore_state == VCORE_INACTIVE) { |
| 1515 | /* Wake up some vcpu to run the core */ |
| 1516 | v = list_first_entry(&vc->runnable_threads, |
| 1517 | struct kvm_vcpu, arch.run_list); |
| 1518 | wake_up(&v->arch.cpu_run); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1519 | } |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1520 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1521 | spin_unlock(&vc->lock); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 1522 | return vcpu->arch.ret; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1523 | } |
| 1524 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1525 | static int kvmppc_vcpu_run_hv(struct kvm_run *run, struct kvm_vcpu *vcpu) |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 1526 | { |
| 1527 | int r; |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1528 | int srcu_idx; |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 1529 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 1530 | if (!vcpu->arch.sane) { |
| 1531 | run->exit_reason = KVM_EXIT_INTERNAL_ERROR; |
| 1532 | return -EINVAL; |
| 1533 | } |
| 1534 | |
Scott Wood | 25051b5 | 2011-11-08 18:23:23 -0600 | [diff] [blame] | 1535 | kvmppc_core_prepare_to_enter(vcpu); |
| 1536 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1537 | /* No need to go into the guest when all we'll do is come back out */ |
| 1538 | if (signal_pending(current)) { |
| 1539 | run->exit_reason = KVM_EXIT_INTR; |
| 1540 | return -EINTR; |
| 1541 | } |
| 1542 | |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 1543 | atomic_inc(&vcpu->kvm->arch.vcpus_running); |
| 1544 | /* Order vcpus_running vs. rma_setup_done, see kvmppc_alloc_reset_hpt */ |
| 1545 | smp_mb(); |
| 1546 | |
| 1547 | /* On the first time here, set up HTAB and VRMA or RMA */ |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1548 | if (!vcpu->kvm->arch.rma_setup_done) { |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 1549 | r = kvmppc_hv_setup_htab_rma(vcpu); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1550 | if (r) |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 1551 | goto out; |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1552 | } |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1553 | |
| 1554 | flush_fp_to_thread(current); |
| 1555 | flush_altivec_to_thread(current); |
| 1556 | flush_vsx_to_thread(current); |
| 1557 | vcpu->arch.wqp = &vcpu->arch.vcore->wq; |
Paul Mackerras | 342d3db | 2011-12-12 12:38:05 +0000 | [diff] [blame] | 1558 | vcpu->arch.pgdir = current->mm->pgd; |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1559 | vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST; |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 1560 | |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 1561 | do { |
| 1562 | r = kvmppc_run_vcpu(run, vcpu); |
| 1563 | |
| 1564 | if (run->exit_reason == KVM_EXIT_PAPR_HCALL && |
| 1565 | !(vcpu->arch.shregs.msr & MSR_PR)) { |
| 1566 | r = kvmppc_pseries_do_hcall(vcpu); |
Scott Wood | 7e28e60e | 2011-11-08 18:23:20 -0600 | [diff] [blame] | 1567 | kvmppc_core_prepare_to_enter(vcpu); |
Paul Mackerras | 913d3ff9a | 2012-10-15 01:16:48 +0000 | [diff] [blame] | 1568 | } else if (r == RESUME_PAGE_FAULT) { |
| 1569 | srcu_idx = srcu_read_lock(&vcpu->kvm->srcu); |
| 1570 | r = kvmppc_book3s_hv_page_fault(run, vcpu, |
| 1571 | vcpu->arch.fault_dar, vcpu->arch.fault_dsisr); |
| 1572 | srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx); |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 1573 | } |
| 1574 | } while (r == RESUME_GUEST); |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 1575 | |
| 1576 | out: |
Paul Mackerras | c7b6767 | 2012-10-15 01:18:07 +0000 | [diff] [blame] | 1577 | vcpu->arch.state = KVMPPC_VCPU_NOTREADY; |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 1578 | atomic_dec(&vcpu->kvm->arch.vcpus_running); |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 1579 | return r; |
| 1580 | } |
| 1581 | |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 1582 | |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1583 | /* Work out RMLS (real mode limit selector) field value for a given RMA size. |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1584 | Assumes POWER7 or PPC970. */ |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1585 | static inline int lpcr_rmls(unsigned long rma_size) |
| 1586 | { |
| 1587 | switch (rma_size) { |
| 1588 | case 32ul << 20: /* 32 MB */ |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1589 | if (cpu_has_feature(CPU_FTR_ARCH_206)) |
| 1590 | return 8; /* only supported on POWER7 */ |
| 1591 | return -1; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1592 | case 64ul << 20: /* 64 MB */ |
| 1593 | return 3; |
| 1594 | case 128ul << 20: /* 128 MB */ |
| 1595 | return 7; |
| 1596 | case 256ul << 20: /* 256 MB */ |
| 1597 | return 4; |
| 1598 | case 1ul << 30: /* 1 GB */ |
| 1599 | return 2; |
| 1600 | case 16ul << 30: /* 16 GB */ |
| 1601 | return 1; |
| 1602 | case 256ul << 30: /* 256 GB */ |
| 1603 | return 0; |
| 1604 | default: |
| 1605 | return -1; |
| 1606 | } |
| 1607 | } |
| 1608 | |
| 1609 | static int kvm_rma_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 1610 | { |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1611 | struct page *page; |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1612 | struct kvm_rma_info *ri = vma->vm_file->private_data; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1613 | |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1614 | if (vmf->pgoff >= kvm_rma_pages) |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1615 | return VM_FAULT_SIGBUS; |
| 1616 | |
| 1617 | page = pfn_to_page(ri->base_pfn + vmf->pgoff); |
| 1618 | get_page(page); |
| 1619 | vmf->page = page; |
| 1620 | return 0; |
| 1621 | } |
| 1622 | |
| 1623 | static const struct vm_operations_struct kvm_rma_vm_ops = { |
| 1624 | .fault = kvm_rma_fault, |
| 1625 | }; |
| 1626 | |
| 1627 | static int kvm_rma_mmap(struct file *file, struct vm_area_struct *vma) |
| 1628 | { |
Konstantin Khlebnikov | 314e51b | 2012-10-08 16:29:02 -0700 | [diff] [blame] | 1629 | vma->vm_flags |= VM_DONTEXPAND | VM_DONTDUMP; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1630 | vma->vm_ops = &kvm_rma_vm_ops; |
| 1631 | return 0; |
| 1632 | } |
| 1633 | |
| 1634 | static int kvm_rma_release(struct inode *inode, struct file *filp) |
| 1635 | { |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1636 | struct kvm_rma_info *ri = filp->private_data; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1637 | |
| 1638 | kvm_release_rma(ri); |
| 1639 | return 0; |
| 1640 | } |
| 1641 | |
Al Viro | 75ef9de | 2013-04-04 19:09:41 -0400 | [diff] [blame] | 1642 | static const struct file_operations kvm_rma_fops = { |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1643 | .mmap = kvm_rma_mmap, |
| 1644 | .release = kvm_rma_release, |
| 1645 | }; |
| 1646 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1647 | static long kvm_vm_ioctl_allocate_rma(struct kvm *kvm, |
| 1648 | struct kvm_allocate_rma *ret) |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1649 | { |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1650 | long fd; |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1651 | struct kvm_rma_info *ri; |
| 1652 | /* |
| 1653 | * Only do this on PPC970 in HV mode |
| 1654 | */ |
| 1655 | if (!cpu_has_feature(CPU_FTR_HVMODE) || |
| 1656 | !cpu_has_feature(CPU_FTR_ARCH_201)) |
| 1657 | return -EINVAL; |
| 1658 | |
| 1659 | if (!kvm_rma_pages) |
| 1660 | return -EINVAL; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1661 | |
| 1662 | ri = kvm_alloc_rma(); |
| 1663 | if (!ri) |
| 1664 | return -ENOMEM; |
| 1665 | |
Yann Droneaud | 2f84d5e | 2013-08-24 22:14:08 +0200 | [diff] [blame] | 1666 | fd = anon_inode_getfd("kvm-rma", &kvm_rma_fops, ri, O_RDWR | O_CLOEXEC); |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1667 | if (fd < 0) |
| 1668 | kvm_release_rma(ri); |
| 1669 | |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1670 | ret->rma_size = kvm_rma_pages << PAGE_SHIFT; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1671 | return fd; |
| 1672 | } |
| 1673 | |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 1674 | static void kvmppc_add_seg_page_size(struct kvm_ppc_one_seg_page_size **sps, |
| 1675 | int linux_psize) |
| 1676 | { |
| 1677 | struct mmu_psize_def *def = &mmu_psize_defs[linux_psize]; |
| 1678 | |
| 1679 | if (!def->shift) |
| 1680 | return; |
| 1681 | (*sps)->page_shift = def->shift; |
| 1682 | (*sps)->slb_enc = def->sllp; |
| 1683 | (*sps)->enc[0].page_shift = def->shift; |
Aneesh Kumar K.V | b1022fb | 2013-04-28 09:37:35 +0000 | [diff] [blame] | 1684 | /* |
| 1685 | * Only return base page encoding. We don't want to return |
| 1686 | * all the supporting pte_enc, because our H_ENTER doesn't |
| 1687 | * support MPSS yet. Once they do, we can start passing all |
| 1688 | * support pte_enc here |
| 1689 | */ |
| 1690 | (*sps)->enc[0].pte_enc = def->penc[linux_psize]; |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 1691 | (*sps)++; |
| 1692 | } |
| 1693 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1694 | static int kvm_vm_ioctl_get_smmu_info_hv(struct kvm *kvm, |
| 1695 | struct kvm_ppc_smmu_info *info) |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 1696 | { |
| 1697 | struct kvm_ppc_one_seg_page_size *sps; |
| 1698 | |
| 1699 | info->flags = KVM_PPC_PAGE_SIZES_REAL; |
| 1700 | if (mmu_has_feature(MMU_FTR_1T_SEGMENT)) |
| 1701 | info->flags |= KVM_PPC_1T_SEGMENTS; |
| 1702 | info->slb_size = mmu_slb_size; |
| 1703 | |
| 1704 | /* We only support these sizes for now, and no muti-size segments */ |
| 1705 | sps = &info->sps[0]; |
| 1706 | kvmppc_add_seg_page_size(&sps, MMU_PAGE_4K); |
| 1707 | kvmppc_add_seg_page_size(&sps, MMU_PAGE_64K); |
| 1708 | kvmppc_add_seg_page_size(&sps, MMU_PAGE_16M); |
| 1709 | |
| 1710 | return 0; |
| 1711 | } |
| 1712 | |
Paul Mackerras | 82ed361 | 2011-12-15 02:03:22 +0000 | [diff] [blame] | 1713 | /* |
| 1714 | * Get (and clear) the dirty memory log for a memory slot. |
| 1715 | */ |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1716 | static int kvm_vm_ioctl_get_dirty_log_hv(struct kvm *kvm, |
| 1717 | struct kvm_dirty_log *log) |
Paul Mackerras | 82ed361 | 2011-12-15 02:03:22 +0000 | [diff] [blame] | 1718 | { |
| 1719 | struct kvm_memory_slot *memslot; |
| 1720 | int r; |
| 1721 | unsigned long n; |
| 1722 | |
| 1723 | mutex_lock(&kvm->slots_lock); |
| 1724 | |
| 1725 | r = -EINVAL; |
Alex Williamson | bbacc0c | 2012-12-10 10:33:09 -0700 | [diff] [blame] | 1726 | if (log->slot >= KVM_USER_MEM_SLOTS) |
Paul Mackerras | 82ed361 | 2011-12-15 02:03:22 +0000 | [diff] [blame] | 1727 | goto out; |
| 1728 | |
| 1729 | memslot = id_to_memslot(kvm->memslots, log->slot); |
| 1730 | r = -ENOENT; |
| 1731 | if (!memslot->dirty_bitmap) |
| 1732 | goto out; |
| 1733 | |
| 1734 | n = kvm_dirty_bitmap_bytes(memslot); |
| 1735 | memset(memslot->dirty_bitmap, 0, n); |
| 1736 | |
Paul Mackerras | dfe49db | 2012-09-11 13:28:18 +0000 | [diff] [blame] | 1737 | r = kvmppc_hv_get_dirty_log(kvm, memslot, memslot->dirty_bitmap); |
Paul Mackerras | 82ed361 | 2011-12-15 02:03:22 +0000 | [diff] [blame] | 1738 | if (r) |
| 1739 | goto out; |
| 1740 | |
| 1741 | r = -EFAULT; |
| 1742 | if (copy_to_user(log->dirty_bitmap, memslot->dirty_bitmap, n)) |
| 1743 | goto out; |
| 1744 | |
| 1745 | r = 0; |
| 1746 | out: |
| 1747 | mutex_unlock(&kvm->slots_lock); |
| 1748 | return r; |
| 1749 | } |
| 1750 | |
Paul Mackerras | a66b48c | 2012-09-11 13:27:46 +0000 | [diff] [blame] | 1751 | static void unpin_slot(struct kvm_memory_slot *memslot) |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1752 | { |
| 1753 | unsigned long *physp; |
| 1754 | unsigned long j, npages, pfn; |
| 1755 | struct page *page; |
| 1756 | |
Paul Mackerras | a66b48c | 2012-09-11 13:27:46 +0000 | [diff] [blame] | 1757 | physp = memslot->arch.slot_phys; |
| 1758 | npages = memslot->npages; |
| 1759 | if (!physp) |
| 1760 | return; |
| 1761 | for (j = 0; j < npages; j++) { |
| 1762 | if (!(physp[j] & KVMPPC_GOT_PAGE)) |
| 1763 | continue; |
| 1764 | pfn = physp[j] >> PAGE_SHIFT; |
| 1765 | page = pfn_to_page(pfn); |
| 1766 | SetPageDirty(page); |
| 1767 | put_page(page); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1768 | } |
| 1769 | } |
| 1770 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1771 | static void kvmppc_core_free_memslot_hv(struct kvm_memory_slot *free, |
| 1772 | struct kvm_memory_slot *dont) |
Paul Mackerras | a66b48c | 2012-09-11 13:27:46 +0000 | [diff] [blame] | 1773 | { |
| 1774 | if (!dont || free->arch.rmap != dont->arch.rmap) { |
| 1775 | vfree(free->arch.rmap); |
| 1776 | free->arch.rmap = NULL; |
| 1777 | } |
| 1778 | if (!dont || free->arch.slot_phys != dont->arch.slot_phys) { |
| 1779 | unpin_slot(free); |
| 1780 | vfree(free->arch.slot_phys); |
| 1781 | free->arch.slot_phys = NULL; |
| 1782 | } |
| 1783 | } |
| 1784 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1785 | static int kvmppc_core_create_memslot_hv(struct kvm_memory_slot *slot, |
| 1786 | unsigned long npages) |
Paul Mackerras | a66b48c | 2012-09-11 13:27:46 +0000 | [diff] [blame] | 1787 | { |
| 1788 | slot->arch.rmap = vzalloc(npages * sizeof(*slot->arch.rmap)); |
| 1789 | if (!slot->arch.rmap) |
| 1790 | return -ENOMEM; |
| 1791 | slot->arch.slot_phys = NULL; |
| 1792 | |
| 1793 | return 0; |
| 1794 | } |
| 1795 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1796 | static int kvmppc_core_prepare_memory_region_hv(struct kvm *kvm, |
| 1797 | struct kvm_memory_slot *memslot, |
| 1798 | struct kvm_userspace_memory_region *mem) |
Paul Mackerras | a66b48c | 2012-09-11 13:27:46 +0000 | [diff] [blame] | 1799 | { |
| 1800 | unsigned long *phys; |
| 1801 | |
| 1802 | /* Allocate a slot_phys array if needed */ |
| 1803 | phys = memslot->arch.slot_phys; |
| 1804 | if (!kvm->arch.using_mmu_notifiers && !phys && memslot->npages) { |
| 1805 | phys = vzalloc(memslot->npages * sizeof(unsigned long)); |
| 1806 | if (!phys) |
| 1807 | return -ENOMEM; |
| 1808 | memslot->arch.slot_phys = phys; |
| 1809 | } |
| 1810 | |
| 1811 | return 0; |
| 1812 | } |
| 1813 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1814 | static void kvmppc_core_commit_memory_region_hv(struct kvm *kvm, |
| 1815 | struct kvm_userspace_memory_region *mem, |
| 1816 | const struct kvm_memory_slot *old) |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1817 | { |
Paul Mackerras | dfe49db | 2012-09-11 13:28:18 +0000 | [diff] [blame] | 1818 | unsigned long npages = mem->memory_size >> PAGE_SHIFT; |
| 1819 | struct kvm_memory_slot *memslot; |
| 1820 | |
Takuya Yoshikawa | 8482644 | 2013-02-27 19:45:25 +0900 | [diff] [blame] | 1821 | if (npages && old->npages) { |
Paul Mackerras | dfe49db | 2012-09-11 13:28:18 +0000 | [diff] [blame] | 1822 | /* |
| 1823 | * If modifying a memslot, reset all the rmap dirty bits. |
| 1824 | * If this is a new memslot, we don't need to do anything |
| 1825 | * since the rmap array starts out as all zeroes, |
| 1826 | * i.e. no pages are dirty. |
| 1827 | */ |
| 1828 | memslot = id_to_memslot(kvm->memslots, mem->slot); |
| 1829 | kvmppc_hv_get_dirty_log(kvm, memslot, NULL); |
| 1830 | } |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1831 | } |
| 1832 | |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 1833 | /* |
| 1834 | * Update LPCR values in kvm->arch and in vcores. |
| 1835 | * Caller must hold kvm->lock. |
| 1836 | */ |
| 1837 | void kvmppc_update_lpcr(struct kvm *kvm, unsigned long lpcr, unsigned long mask) |
| 1838 | { |
| 1839 | long int i; |
| 1840 | u32 cores_done = 0; |
| 1841 | |
| 1842 | if ((kvm->arch.lpcr & mask) == lpcr) |
| 1843 | return; |
| 1844 | |
| 1845 | kvm->arch.lpcr = (kvm->arch.lpcr & ~mask) | lpcr; |
| 1846 | |
| 1847 | for (i = 0; i < KVM_MAX_VCORES; ++i) { |
| 1848 | struct kvmppc_vcore *vc = kvm->arch.vcores[i]; |
| 1849 | if (!vc) |
| 1850 | continue; |
| 1851 | spin_lock(&vc->lock); |
| 1852 | vc->lpcr = (vc->lpcr & ~mask) | lpcr; |
| 1853 | spin_unlock(&vc->lock); |
| 1854 | if (++cores_done >= kvm->arch.online_vcores) |
| 1855 | break; |
| 1856 | } |
| 1857 | } |
| 1858 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1859 | static void kvmppc_mmu_destroy_hv(struct kvm_vcpu *vcpu) |
| 1860 | { |
| 1861 | return; |
| 1862 | } |
| 1863 | |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 1864 | static int kvmppc_hv_setup_htab_rma(struct kvm_vcpu *vcpu) |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1865 | { |
| 1866 | int err = 0; |
| 1867 | struct kvm *kvm = vcpu->kvm; |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1868 | struct kvm_rma_info *ri = NULL; |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1869 | unsigned long hva; |
| 1870 | struct kvm_memory_slot *memslot; |
| 1871 | struct vm_area_struct *vma; |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 1872 | unsigned long lpcr = 0, senc; |
| 1873 | unsigned long lpcr_mask = 0; |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1874 | unsigned long psize, porder; |
| 1875 | unsigned long rma_size; |
| 1876 | unsigned long rmls; |
| 1877 | unsigned long *physp; |
Paul Mackerras | da9d1d7 | 2011-12-12 12:31:41 +0000 | [diff] [blame] | 1878 | unsigned long i, npages; |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1879 | int srcu_idx; |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1880 | |
| 1881 | mutex_lock(&kvm->lock); |
| 1882 | if (kvm->arch.rma_setup_done) |
| 1883 | goto out; /* another vcpu beat us to it */ |
| 1884 | |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 1885 | /* Allocate hashed page table (if not done already) and reset it */ |
| 1886 | if (!kvm->arch.hpt_virt) { |
| 1887 | err = kvmppc_alloc_hpt(kvm, NULL); |
| 1888 | if (err) { |
| 1889 | pr_err("KVM: Couldn't alloc HPT\n"); |
| 1890 | goto out; |
| 1891 | } |
| 1892 | } |
| 1893 | |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1894 | /* Look up the memslot for guest physical address 0 */ |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1895 | srcu_idx = srcu_read_lock(&kvm->srcu); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1896 | memslot = gfn_to_memslot(kvm, 0); |
| 1897 | |
| 1898 | /* We must have some memory at 0 by now */ |
| 1899 | err = -EINVAL; |
| 1900 | if (!memslot || (memslot->flags & KVM_MEMSLOT_INVALID)) |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1901 | goto out_srcu; |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1902 | |
| 1903 | /* Look up the VMA for the start of this memory slot */ |
| 1904 | hva = memslot->userspace_addr; |
| 1905 | down_read(¤t->mm->mmap_sem); |
| 1906 | vma = find_vma(current->mm, hva); |
| 1907 | if (!vma || vma->vm_start > hva || (vma->vm_flags & VM_IO)) |
| 1908 | goto up_out; |
| 1909 | |
| 1910 | psize = vma_kernel_pagesize(vma); |
Paul Mackerras | da9d1d7 | 2011-12-12 12:31:41 +0000 | [diff] [blame] | 1911 | porder = __ilog2(psize); |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1912 | |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1913 | /* Is this one of our preallocated RMAs? */ |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1914 | if (vma->vm_file && vma->vm_file->f_op == &kvm_rma_fops && |
| 1915 | hva == vma->vm_start) |
| 1916 | ri = vma->vm_file->private_data; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1917 | |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1918 | up_read(¤t->mm->mmap_sem); |
| 1919 | |
| 1920 | if (!ri) { |
| 1921 | /* On POWER7, use VRMA; on PPC970, give up */ |
| 1922 | err = -EPERM; |
| 1923 | if (cpu_has_feature(CPU_FTR_ARCH_201)) { |
| 1924 | pr_err("KVM: CPU requires an RMO\n"); |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1925 | goto out_srcu; |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1926 | } |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1927 | |
Paul Mackerras | da9d1d7 | 2011-12-12 12:31:41 +0000 | [diff] [blame] | 1928 | /* We can handle 4k, 64k or 16M pages in the VRMA */ |
| 1929 | err = -EINVAL; |
| 1930 | if (!(psize == 0x1000 || psize == 0x10000 || |
| 1931 | psize == 0x1000000)) |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1932 | goto out_srcu; |
Paul Mackerras | da9d1d7 | 2011-12-12 12:31:41 +0000 | [diff] [blame] | 1933 | |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1934 | /* Update VRMASD field in the LPCR */ |
Paul Mackerras | da9d1d7 | 2011-12-12 12:31:41 +0000 | [diff] [blame] | 1935 | senc = slb_pgsize_encoding(psize); |
Paul Mackerras | 697d389 | 2011-12-12 12:36:37 +0000 | [diff] [blame] | 1936 | kvm->arch.vrma_slb_v = senc | SLB_VSID_B_1T | |
| 1937 | (VRMA_VSID << SLB_VSID_SHIFT_1T); |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 1938 | lpcr_mask = LPCR_VRMASD; |
| 1939 | /* the -4 is to account for senc values starting at 0x10 */ |
| 1940 | lpcr = senc << (LPCR_VRMASD_SH - 4); |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1941 | |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1942 | /* Create HPTEs in the hash page table for the VRMA */ |
Paul Mackerras | da9d1d7 | 2011-12-12 12:31:41 +0000 | [diff] [blame] | 1943 | kvmppc_map_vrma(vcpu, memslot, porder); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1944 | |
| 1945 | } else { |
| 1946 | /* Set up to use an RMO region */ |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1947 | rma_size = kvm_rma_pages; |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1948 | if (rma_size > memslot->npages) |
| 1949 | rma_size = memslot->npages; |
| 1950 | rma_size <<= PAGE_SHIFT; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1951 | rmls = lpcr_rmls(rma_size); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1952 | err = -EINVAL; |
Chen Gang | 5d226ae | 2013-07-22 14:32:35 +0800 | [diff] [blame] | 1953 | if ((long)rmls < 0) { |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1954 | pr_err("KVM: Can't use RMA of 0x%lx bytes\n", rma_size); |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 1955 | goto out_srcu; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1956 | } |
| 1957 | atomic_inc(&ri->use_count); |
| 1958 | kvm->arch.rma = ri; |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1959 | |
| 1960 | /* Update LPCR and RMOR */ |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1961 | if (cpu_has_feature(CPU_FTR_ARCH_201)) { |
| 1962 | /* PPC970; insert RMLS value (split field) in HID4 */ |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 1963 | lpcr_mask = (1ul << HID4_RMLS0_SH) | |
| 1964 | (3ul << HID4_RMLS2_SH) | HID4_RMOR; |
| 1965 | lpcr = ((rmls >> 2) << HID4_RMLS0_SH) | |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1966 | ((rmls & 3) << HID4_RMLS2_SH); |
| 1967 | /* RMOR is also in HID4 */ |
| 1968 | lpcr |= ((ri->base_pfn >> (26 - PAGE_SHIFT)) & 0xffff) |
| 1969 | << HID4_RMOR_SH; |
| 1970 | } else { |
| 1971 | /* POWER7 */ |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 1972 | lpcr_mask = LPCR_VPM0 | LPCR_VRMA_L | LPCR_RMLS; |
| 1973 | lpcr = rmls << LPCR_RMLS_SH; |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1974 | kvm->arch.rmor = ri->base_pfn << PAGE_SHIFT; |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 1975 | } |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1976 | pr_info("KVM: Using RMO at %lx size %lx (LPCR = %lx)\n", |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1977 | ri->base_pfn << PAGE_SHIFT, rma_size, lpcr); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1978 | |
| 1979 | /* Initialize phys addrs of pages in RMO */ |
Aneesh Kumar K.V | 6c45b81 | 2013-07-02 11:15:17 +0530 | [diff] [blame] | 1980 | npages = kvm_rma_pages; |
Paul Mackerras | da9d1d7 | 2011-12-12 12:31:41 +0000 | [diff] [blame] | 1981 | porder = __ilog2(npages); |
Paul Mackerras | a66b48c | 2012-09-11 13:27:46 +0000 | [diff] [blame] | 1982 | physp = memslot->arch.slot_phys; |
| 1983 | if (physp) { |
| 1984 | if (npages > memslot->npages) |
| 1985 | npages = memslot->npages; |
| 1986 | spin_lock(&kvm->arch.slot_phys_lock); |
| 1987 | for (i = 0; i < npages; ++i) |
| 1988 | physp[i] = ((ri->base_pfn + i) << PAGE_SHIFT) + |
| 1989 | porder; |
| 1990 | spin_unlock(&kvm->arch.slot_phys_lock); |
| 1991 | } |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 1992 | } |
| 1993 | |
Paul Mackerras | a0144e2 | 2013-09-20 14:52:38 +1000 | [diff] [blame] | 1994 | kvmppc_update_lpcr(kvm, lpcr, lpcr_mask); |
| 1995 | |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 1996 | /* Order updates to kvm->arch.lpcr etc. vs. rma_setup_done */ |
| 1997 | smp_wmb(); |
| 1998 | kvm->arch.rma_setup_done = 1; |
| 1999 | err = 0; |
Paul Mackerras | 2c9097e | 2012-09-11 13:27:01 +0000 | [diff] [blame] | 2000 | out_srcu: |
| 2001 | srcu_read_unlock(&kvm->srcu, srcu_idx); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 2002 | out: |
| 2003 | mutex_unlock(&kvm->lock); |
| 2004 | return err; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 2005 | |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 2006 | up_out: |
| 2007 | up_read(¤t->mm->mmap_sem); |
Lai Jiangshan | 505d642 | 2013-03-16 00:50:49 +0800 | [diff] [blame] | 2008 | goto out_srcu; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2009 | } |
| 2010 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2011 | static int kvmppc_core_init_vm_hv(struct kvm *kvm) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2012 | { |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 2013 | unsigned long lpcr, lpid; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2014 | |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 2015 | /* Allocate the guest's logical partition ID */ |
| 2016 | |
| 2017 | lpid = kvmppc_alloc_lpid(); |
Chen Gang | 5d226ae | 2013-07-22 14:32:35 +0800 | [diff] [blame] | 2018 | if ((long)lpid < 0) |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 2019 | return -ENOMEM; |
| 2020 | kvm->arch.lpid = lpid; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2021 | |
Paul Mackerras | 1b400ba | 2012-11-21 23:28:08 +0000 | [diff] [blame] | 2022 | /* |
| 2023 | * Since we don't flush the TLB when tearing down a VM, |
| 2024 | * and this lpid might have previously been used, |
| 2025 | * make sure we flush on each core before running the new VM. |
| 2026 | */ |
| 2027 | cpumask_setall(&kvm->arch.need_tlb_flush); |
| 2028 | |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 2029 | kvm->arch.rma = NULL; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 2030 | |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 2031 | kvm->arch.host_sdr1 = mfspr(SPRN_SDR1); |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 2032 | |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 2033 | if (cpu_has_feature(CPU_FTR_ARCH_201)) { |
| 2034 | /* PPC970; HID4 is effectively the LPCR */ |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 2035 | kvm->arch.host_lpid = 0; |
| 2036 | kvm->arch.host_lpcr = lpcr = mfspr(SPRN_HID4); |
| 2037 | lpcr &= ~((3 << HID4_LPID1_SH) | (0xful << HID4_LPID5_SH)); |
| 2038 | lpcr |= ((lpid >> 4) << HID4_LPID1_SH) | |
| 2039 | ((lpid & 0xf) << HID4_LPID5_SH); |
| 2040 | } else { |
| 2041 | /* POWER7; init LPCR for virtual RMA mode */ |
| 2042 | kvm->arch.host_lpid = mfspr(SPRN_LPID); |
| 2043 | kvm->arch.host_lpcr = lpcr = mfspr(SPRN_LPCR); |
| 2044 | lpcr &= LPCR_PECE | LPCR_LPES; |
| 2045 | lpcr |= (4UL << LPCR_DPFD_SH) | LPCR_HDICE | |
Paul Mackerras | 697d389 | 2011-12-12 12:36:37 +0000 | [diff] [blame] | 2046 | LPCR_VPM0 | LPCR_VPM1; |
| 2047 | kvm->arch.vrma_slb_v = SLB_VSID_B_1T | |
| 2048 | (VRMA_VSID << SLB_VSID_SHIFT_1T); |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 2049 | } |
| 2050 | kvm->arch.lpcr = lpcr; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 2051 | |
Paul Mackerras | 342d3db | 2011-12-12 12:38:05 +0000 | [diff] [blame] | 2052 | kvm->arch.using_mmu_notifiers = !!cpu_has_feature(CPU_FTR_ARCH_206); |
Paul Mackerras | c77162d | 2011-12-12 12:31:00 +0000 | [diff] [blame] | 2053 | spin_lock_init(&kvm->arch.slot_phys_lock); |
Paul Mackerras | 512691d | 2012-10-15 01:15:41 +0000 | [diff] [blame] | 2054 | |
| 2055 | /* |
| 2056 | * Don't allow secondary CPU threads to come online |
| 2057 | * while any KVM VMs exist. |
| 2058 | */ |
| 2059 | inhibit_secondary_onlining(); |
| 2060 | |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 2061 | return 0; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2062 | } |
| 2063 | |
Paul Mackerras | f1378b1 | 2013-09-27 15:33:43 +0530 | [diff] [blame] | 2064 | static void kvmppc_free_vcores(struct kvm *kvm) |
| 2065 | { |
| 2066 | long int i; |
| 2067 | |
| 2068 | for (i = 0; i < KVM_MAX_VCORES; ++i) |
| 2069 | kfree(kvm->arch.vcores[i]); |
| 2070 | kvm->arch.online_vcores = 0; |
| 2071 | } |
| 2072 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2073 | static void kvmppc_core_destroy_vm_hv(struct kvm *kvm) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2074 | { |
Paul Mackerras | 512691d | 2012-10-15 01:15:41 +0000 | [diff] [blame] | 2075 | uninhibit_secondary_onlining(); |
| 2076 | |
Paul Mackerras | f1378b1 | 2013-09-27 15:33:43 +0530 | [diff] [blame] | 2077 | kvmppc_free_vcores(kvm); |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 2078 | if (kvm->arch.rma) { |
| 2079 | kvm_release_rma(kvm->arch.rma); |
| 2080 | kvm->arch.rma = NULL; |
| 2081 | } |
| 2082 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2083 | kvmppc_free_hpt(kvm); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2084 | } |
| 2085 | |
| 2086 | /* We don't need to emulate any privileged instructions or dcbz */ |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2087 | static int kvmppc_core_emulate_op_hv(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 2088 | unsigned int inst, int *advance) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2089 | { |
| 2090 | return EMULATE_FAIL; |
| 2091 | } |
| 2092 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2093 | static int kvmppc_core_emulate_mtspr_hv(struct kvm_vcpu *vcpu, int sprn, |
| 2094 | ulong spr_val) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2095 | { |
| 2096 | return EMULATE_FAIL; |
| 2097 | } |
| 2098 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2099 | static int kvmppc_core_emulate_mfspr_hv(struct kvm_vcpu *vcpu, int sprn, |
| 2100 | ulong *spr_val) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2101 | { |
| 2102 | return EMULATE_FAIL; |
| 2103 | } |
| 2104 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2105 | static int kvmppc_core_check_processor_compat_hv(void) |
| 2106 | { |
| 2107 | if (!cpu_has_feature(CPU_FTR_HVMODE)) |
| 2108 | return -EIO; |
| 2109 | return 0; |
| 2110 | } |
| 2111 | |
| 2112 | static long kvm_arch_vm_ioctl_hv(struct file *filp, |
| 2113 | unsigned int ioctl, unsigned long arg) |
| 2114 | { |
| 2115 | struct kvm *kvm __maybe_unused = filp->private_data; |
| 2116 | void __user *argp = (void __user *)arg; |
| 2117 | long r; |
| 2118 | |
| 2119 | switch (ioctl) { |
| 2120 | |
| 2121 | case KVM_ALLOCATE_RMA: { |
| 2122 | struct kvm_allocate_rma rma; |
| 2123 | struct kvm *kvm = filp->private_data; |
| 2124 | |
| 2125 | r = kvm_vm_ioctl_allocate_rma(kvm, &rma); |
| 2126 | if (r >= 0 && copy_to_user(argp, &rma, sizeof(rma))) |
| 2127 | r = -EFAULT; |
| 2128 | break; |
| 2129 | } |
| 2130 | |
| 2131 | case KVM_PPC_ALLOCATE_HTAB: { |
| 2132 | u32 htab_order; |
| 2133 | |
| 2134 | r = -EFAULT; |
| 2135 | if (get_user(htab_order, (u32 __user *)argp)) |
| 2136 | break; |
| 2137 | r = kvmppc_alloc_reset_hpt(kvm, &htab_order); |
| 2138 | if (r) |
| 2139 | break; |
| 2140 | r = -EFAULT; |
| 2141 | if (put_user(htab_order, (u32 __user *)argp)) |
| 2142 | break; |
| 2143 | r = 0; |
| 2144 | break; |
| 2145 | } |
| 2146 | |
| 2147 | case KVM_PPC_GET_HTAB_FD: { |
| 2148 | struct kvm_get_htab_fd ghf; |
| 2149 | |
| 2150 | r = -EFAULT; |
| 2151 | if (copy_from_user(&ghf, argp, sizeof(ghf))) |
| 2152 | break; |
| 2153 | r = kvm_vm_ioctl_get_htab_fd(kvm, &ghf); |
| 2154 | break; |
| 2155 | } |
| 2156 | |
| 2157 | default: |
| 2158 | r = -ENOTTY; |
| 2159 | } |
| 2160 | |
| 2161 | return r; |
| 2162 | } |
| 2163 | |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 2164 | static struct kvmppc_ops kvm_ops_hv = { |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2165 | .get_sregs = kvm_arch_vcpu_ioctl_get_sregs_hv, |
| 2166 | .set_sregs = kvm_arch_vcpu_ioctl_set_sregs_hv, |
| 2167 | .get_one_reg = kvmppc_get_one_reg_hv, |
| 2168 | .set_one_reg = kvmppc_set_one_reg_hv, |
| 2169 | .vcpu_load = kvmppc_core_vcpu_load_hv, |
| 2170 | .vcpu_put = kvmppc_core_vcpu_put_hv, |
| 2171 | .set_msr = kvmppc_set_msr_hv, |
| 2172 | .vcpu_run = kvmppc_vcpu_run_hv, |
| 2173 | .vcpu_create = kvmppc_core_vcpu_create_hv, |
| 2174 | .vcpu_free = kvmppc_core_vcpu_free_hv, |
| 2175 | .check_requests = kvmppc_core_check_requests_hv, |
| 2176 | .get_dirty_log = kvm_vm_ioctl_get_dirty_log_hv, |
| 2177 | .flush_memslot = kvmppc_core_flush_memslot_hv, |
| 2178 | .prepare_memory_region = kvmppc_core_prepare_memory_region_hv, |
| 2179 | .commit_memory_region = kvmppc_core_commit_memory_region_hv, |
| 2180 | .unmap_hva = kvm_unmap_hva_hv, |
| 2181 | .unmap_hva_range = kvm_unmap_hva_range_hv, |
| 2182 | .age_hva = kvm_age_hva_hv, |
| 2183 | .test_age_hva = kvm_test_age_hva_hv, |
| 2184 | .set_spte_hva = kvm_set_spte_hva_hv, |
| 2185 | .mmu_destroy = kvmppc_mmu_destroy_hv, |
| 2186 | .free_memslot = kvmppc_core_free_memslot_hv, |
| 2187 | .create_memslot = kvmppc_core_create_memslot_hv, |
| 2188 | .init_vm = kvmppc_core_init_vm_hv, |
| 2189 | .destroy_vm = kvmppc_core_destroy_vm_hv, |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2190 | .get_smmu_info = kvm_vm_ioctl_get_smmu_info_hv, |
| 2191 | .emulate_op = kvmppc_core_emulate_op_hv, |
| 2192 | .emulate_mtspr = kvmppc_core_emulate_mtspr_hv, |
| 2193 | .emulate_mfspr = kvmppc_core_emulate_mfspr_hv, |
| 2194 | .fast_vcpu_kick = kvmppc_fast_vcpu_kick_hv, |
| 2195 | .arch_vm_ioctl = kvm_arch_vm_ioctl_hv, |
| 2196 | }; |
| 2197 | |
| 2198 | static int kvmppc_book3s_init_hv(void) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2199 | { |
| 2200 | int r; |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 2201 | /* |
| 2202 | * FIXME!! Do we need to check on all cpus ? |
| 2203 | */ |
| 2204 | r = kvmppc_core_check_processor_compat_hv(); |
| 2205 | if (r < 0) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2206 | return r; |
| 2207 | |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 2208 | kvm_ops_hv.owner = THIS_MODULE; |
| 2209 | kvmppc_hv_ops = &kvm_ops_hv; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2210 | |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 2211 | r = kvmppc_mmu_hv_init(); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2212 | return r; |
| 2213 | } |
| 2214 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2215 | static void kvmppc_book3s_exit_hv(void) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2216 | { |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 2217 | kvmppc_hv_ops = NULL; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 2218 | } |
| 2219 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 2220 | module_init(kvmppc_book3s_init_hv); |
| 2221 | module_exit(kvmppc_book3s_exit_hv); |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 2222 | MODULE_LICENSE("GPL"); |