Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1 | /* |
| 2 | * This program is free software; you can redistribute it and/or modify |
| 3 | * it under the terms of the GNU General Public License, version 2, as |
| 4 | * published by the Free Software Foundation. |
| 5 | * |
| 6 | * This program is distributed in the hope that it will be useful, |
| 7 | * but WITHOUT ANY WARRANTY; without even the implied warranty of |
| 8 | * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the |
| 9 | * GNU General Public License for more details. |
| 10 | * |
| 11 | * You should have received a copy of the GNU General Public License |
| 12 | * along with this program; if not, write to the Free Software |
| 13 | * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA. |
| 14 | * |
| 15 | * Copyright IBM Corp. 2007 |
| 16 | * |
| 17 | * Authors: Hollis Blanchard <hollisb@us.ibm.com> |
| 18 | * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com> |
| 19 | */ |
| 20 | |
| 21 | #include <linux/errno.h> |
| 22 | #include <linux/err.h> |
| 23 | #include <linux/kvm_host.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 24 | #include <linux/vmalloc.h> |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 25 | #include <linux/hrtimer.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 26 | #include <linux/fs.h> |
Tejun Heo | 5a0e3ad | 2010-03-24 17:04:11 +0900 | [diff] [blame] | 27 | #include <linux/slab.h> |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 28 | #include <linux/file.h> |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 29 | #include <linux/module.h> |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 30 | #include <asm/cputable.h> |
| 31 | #include <asm/uaccess.h> |
| 32 | #include <asm/kvm_ppc.h> |
Hollis Blanchard | 83aae4a | 2008-07-25 13:54:52 -0500 | [diff] [blame] | 33 | #include <asm/tlbflush.h> |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 34 | #include <asm/cputhreads.h> |
Alexander Graf | bd2be68 | 2012-08-13 01:04:19 +0200 | [diff] [blame] | 35 | #include <asm/irqflags.h> |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 36 | #include "timing.h" |
Alexander Graf | 5efdb4b | 2013-04-17 00:37:57 +0200 | [diff] [blame] | 37 | #include "irq.h" |
Paul Mackerras | fad7b9b | 2008-12-23 14:57:26 +1100 | [diff] [blame] | 38 | #include "../mm/mmu_decl.h" |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 39 | |
Marcelo Tosatti | 46f43c6 | 2009-06-18 11:47:27 -0300 | [diff] [blame] | 40 | #define CREATE_TRACE_POINTS |
| 41 | #include "trace.h" |
| 42 | |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 43 | struct kvmppc_ops *kvmppc_hv_ops; |
| 44 | EXPORT_SYMBOL_GPL(kvmppc_hv_ops); |
| 45 | struct kvmppc_ops *kvmppc_pr_ops; |
| 46 | EXPORT_SYMBOL_GPL(kvmppc_pr_ops); |
| 47 | |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 48 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 49 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
| 50 | { |
Liu Yu-B13201 | 9202e07 | 2012-07-03 05:48:52 +0000 | [diff] [blame] | 51 | return !!(v->arch.pending_exceptions) || |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 52 | v->requests; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 53 | } |
| 54 | |
Christoffer Dall | b6d3383 | 2012-03-08 16:44:24 -0500 | [diff] [blame] | 55 | int kvm_arch_vcpu_should_kick(struct kvm_vcpu *vcpu) |
| 56 | { |
| 57 | return 1; |
| 58 | } |
| 59 | |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 60 | /* |
| 61 | * Common checks before entering the guest world. Call with interrupts |
| 62 | * disabled. |
| 63 | * |
Alexander Graf | 7ee7885 | 2012-08-13 12:44:41 +0200 | [diff] [blame] | 64 | * returns: |
| 65 | * |
| 66 | * == 1 if we're ready to go into guest state |
| 67 | * <= 0 if we need to go back to the host with return value |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 68 | */ |
| 69 | int kvmppc_prepare_to_enter(struct kvm_vcpu *vcpu) |
| 70 | { |
Scott Wood | 6c85f52 | 2014-01-09 19:18:40 -0600 | [diff] [blame] | 71 | int r; |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 72 | |
Scott Wood | 6c85f52 | 2014-01-09 19:18:40 -0600 | [diff] [blame] | 73 | WARN_ON(irqs_disabled()); |
| 74 | hard_irq_disable(); |
| 75 | |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 76 | while (true) { |
| 77 | if (need_resched()) { |
| 78 | local_irq_enable(); |
| 79 | cond_resched(); |
Scott Wood | 6c85f52 | 2014-01-09 19:18:40 -0600 | [diff] [blame] | 80 | hard_irq_disable(); |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 81 | continue; |
| 82 | } |
| 83 | |
| 84 | if (signal_pending(current)) { |
Alexander Graf | 7ee7885 | 2012-08-13 12:44:41 +0200 | [diff] [blame] | 85 | kvmppc_account_exit(vcpu, SIGNAL_EXITS); |
| 86 | vcpu->run->exit_reason = KVM_EXIT_INTR; |
| 87 | r = -EINTR; |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 88 | break; |
| 89 | } |
| 90 | |
Scott Wood | 5bd1cf1 | 2012-08-22 15:03:50 +0000 | [diff] [blame] | 91 | vcpu->mode = IN_GUEST_MODE; |
| 92 | |
| 93 | /* |
| 94 | * Reading vcpu->requests must happen after setting vcpu->mode, |
| 95 | * so we don't miss a request because the requester sees |
| 96 | * OUTSIDE_GUEST_MODE and assumes we'll be checking requests |
| 97 | * before next entering the guest (and thus doesn't IPI). |
| 98 | */ |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 99 | smp_mb(); |
Scott Wood | 5bd1cf1 | 2012-08-22 15:03:50 +0000 | [diff] [blame] | 100 | |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 101 | if (vcpu->requests) { |
| 102 | /* Make sure we process requests preemptable */ |
| 103 | local_irq_enable(); |
| 104 | trace_kvm_check_requests(vcpu); |
Alexander Graf | 7c973a2 | 2012-08-13 12:50:35 +0200 | [diff] [blame] | 105 | r = kvmppc_core_check_requests(vcpu); |
Scott Wood | 6c85f52 | 2014-01-09 19:18:40 -0600 | [diff] [blame] | 106 | hard_irq_disable(); |
Alexander Graf | 7c973a2 | 2012-08-13 12:50:35 +0200 | [diff] [blame] | 107 | if (r > 0) |
| 108 | continue; |
| 109 | break; |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 110 | } |
| 111 | |
| 112 | if (kvmppc_core_prepare_to_enter(vcpu)) { |
| 113 | /* interrupts got enabled in between, so we |
| 114 | are back at square 1 */ |
| 115 | continue; |
| 116 | } |
| 117 | |
Alexander Graf | 3766a4c | 2012-08-13 01:24:01 +0200 | [diff] [blame] | 118 | kvm_guest_enter(); |
Scott Wood | 6c85f52 | 2014-01-09 19:18:40 -0600 | [diff] [blame] | 119 | return 1; |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 120 | } |
| 121 | |
Scott Wood | 6c85f52 | 2014-01-09 19:18:40 -0600 | [diff] [blame] | 122 | /* return to host */ |
| 123 | local_irq_enable(); |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 124 | return r; |
| 125 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 126 | EXPORT_SYMBOL_GPL(kvmppc_prepare_to_enter); |
Alexander Graf | 03d25c5 | 2012-08-10 12:28:50 +0200 | [diff] [blame] | 127 | |
Alexander Graf | 5deb8e7 | 2014-04-24 13:46:24 +0200 | [diff] [blame] | 128 | #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) |
| 129 | static void kvmppc_swab_shared(struct kvm_vcpu *vcpu) |
| 130 | { |
| 131 | struct kvm_vcpu_arch_shared *shared = vcpu->arch.shared; |
| 132 | int i; |
| 133 | |
| 134 | shared->sprg0 = swab64(shared->sprg0); |
| 135 | shared->sprg1 = swab64(shared->sprg1); |
| 136 | shared->sprg2 = swab64(shared->sprg2); |
| 137 | shared->sprg3 = swab64(shared->sprg3); |
| 138 | shared->srr0 = swab64(shared->srr0); |
| 139 | shared->srr1 = swab64(shared->srr1); |
| 140 | shared->dar = swab64(shared->dar); |
| 141 | shared->msr = swab64(shared->msr); |
| 142 | shared->dsisr = swab32(shared->dsisr); |
| 143 | shared->int_pending = swab32(shared->int_pending); |
| 144 | for (i = 0; i < ARRAY_SIZE(shared->sr); i++) |
| 145 | shared->sr[i] = swab32(shared->sr[i]); |
| 146 | } |
| 147 | #endif |
| 148 | |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 149 | int kvmppc_kvm_pv(struct kvm_vcpu *vcpu) |
| 150 | { |
| 151 | int nr = kvmppc_get_gpr(vcpu, 11); |
| 152 | int r; |
| 153 | unsigned long __maybe_unused param1 = kvmppc_get_gpr(vcpu, 3); |
| 154 | unsigned long __maybe_unused param2 = kvmppc_get_gpr(vcpu, 4); |
| 155 | unsigned long __maybe_unused param3 = kvmppc_get_gpr(vcpu, 5); |
| 156 | unsigned long __maybe_unused param4 = kvmppc_get_gpr(vcpu, 6); |
| 157 | unsigned long r2 = 0; |
| 158 | |
Alexander Graf | 5deb8e7 | 2014-04-24 13:46:24 +0200 | [diff] [blame] | 159 | if (!(kvmppc_get_msr(vcpu) & MSR_SF)) { |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 160 | /* 32 bit mode */ |
| 161 | param1 &= 0xffffffff; |
| 162 | param2 &= 0xffffffff; |
| 163 | param3 &= 0xffffffff; |
| 164 | param4 &= 0xffffffff; |
| 165 | } |
| 166 | |
| 167 | switch (nr) { |
Stuart Yoder | fdcf8bd | 2012-07-03 05:48:50 +0000 | [diff] [blame] | 168 | case KVM_HCALL_TOKEN(KVM_HC_PPC_MAP_MAGIC_PAGE): |
Alexander Graf | 5fc8740 | 2010-07-29 14:47:55 +0200 | [diff] [blame] | 169 | { |
Alexander Graf | 5deb8e7 | 2014-04-24 13:46:24 +0200 | [diff] [blame] | 170 | #if defined(CONFIG_PPC_BOOK3S_64) && defined(CONFIG_KVM_BOOK3S_PR_POSSIBLE) |
| 171 | /* Book3S can be little endian, find it out here */ |
| 172 | int shared_big_endian = true; |
| 173 | if (vcpu->arch.intr_msr & MSR_LE) |
| 174 | shared_big_endian = false; |
| 175 | if (shared_big_endian != vcpu->arch.shared_big_endian) |
| 176 | kvmppc_swab_shared(vcpu); |
| 177 | vcpu->arch.shared_big_endian = shared_big_endian; |
| 178 | #endif |
| 179 | |
Alexander Graf | f3383cf | 2014-05-12 01:08:32 +0200 | [diff] [blame] | 180 | if (!(param2 & MAGIC_PAGE_FLAG_NOT_MAPPED_NX)) { |
| 181 | /* |
| 182 | * Older versions of the Linux magic page code had |
| 183 | * a bug where they would map their trampoline code |
| 184 | * NX. If that's the case, remove !PR NX capability. |
| 185 | */ |
| 186 | vcpu->arch.disable_kernel_nx = true; |
| 187 | kvm_make_request(KVM_REQ_TLB_FLUSH, vcpu); |
| 188 | } |
| 189 | |
| 190 | vcpu->arch.magic_page_pa = param1 & ~0xfffULL; |
| 191 | vcpu->arch.magic_page_ea = param2 & ~0xfffULL; |
Alexander Graf | 5fc8740 | 2010-07-29 14:47:55 +0200 | [diff] [blame] | 192 | |
Scott Wood | b590497 | 2011-11-08 18:23:30 -0600 | [diff] [blame] | 193 | r2 = KVM_MAGIC_FEAT_SR | KVM_MAGIC_FEAT_MAS0_TO_SPRG7; |
Alexander Graf | 7508e16 | 2010-08-03 11:32:56 +0200 | [diff] [blame] | 194 | |
Stuart Yoder | fdcf8bd | 2012-07-03 05:48:50 +0000 | [diff] [blame] | 195 | r = EV_SUCCESS; |
Alexander Graf | 5fc8740 | 2010-07-29 14:47:55 +0200 | [diff] [blame] | 196 | break; |
| 197 | } |
Stuart Yoder | fdcf8bd | 2012-07-03 05:48:50 +0000 | [diff] [blame] | 198 | case KVM_HCALL_TOKEN(KVM_HC_FEATURES): |
| 199 | r = EV_SUCCESS; |
Alexander Graf | bf7ca4b | 2012-02-15 23:40:00 +0000 | [diff] [blame] | 200 | #if defined(CONFIG_PPC_BOOK3S) || defined(CONFIG_KVM_E500V2) |
Scott Wood | a4cd8b2 | 2011-06-14 18:34:41 -0500 | [diff] [blame] | 201 | /* XXX Missing magic page on 44x */ |
Alexander Graf | 5fc8740 | 2010-07-29 14:47:55 +0200 | [diff] [blame] | 202 | r2 |= (1 << KVM_FEATURE_MAGIC_PAGE); |
| 203 | #endif |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 204 | |
| 205 | /* Second return value is in r4 */ |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 206 | break; |
Liu Yu-B13201 | 9202e07 | 2012-07-03 05:48:52 +0000 | [diff] [blame] | 207 | case EV_HCALL_TOKEN(EV_IDLE): |
| 208 | r = EV_SUCCESS; |
| 209 | kvm_vcpu_block(vcpu); |
| 210 | clear_bit(KVM_REQ_UNHALT, &vcpu->requests); |
| 211 | break; |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 212 | default: |
Stuart Yoder | fdcf8bd | 2012-07-03 05:48:50 +0000 | [diff] [blame] | 213 | r = EV_UNIMPLEMENTED; |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 214 | break; |
| 215 | } |
| 216 | |
Alexander Graf | 7508e16 | 2010-08-03 11:32:56 +0200 | [diff] [blame] | 217 | kvmppc_set_gpr(vcpu, 4, r2); |
| 218 | |
Alexander Graf | 2a342ed | 2010-07-29 14:47:48 +0200 | [diff] [blame] | 219 | return r; |
| 220 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 221 | EXPORT_SYMBOL_GPL(kvmppc_kvm_pv); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 222 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 223 | int kvmppc_sanity_check(struct kvm_vcpu *vcpu) |
| 224 | { |
| 225 | int r = false; |
| 226 | |
| 227 | /* We have to know what CPU to virtualize */ |
| 228 | if (!vcpu->arch.pvr) |
| 229 | goto out; |
| 230 | |
| 231 | /* PAPR only works with book3s_64 */ |
| 232 | if ((vcpu->arch.cpu_type != KVM_CPU_3S_64) && vcpu->arch.papr_enabled) |
| 233 | goto out; |
| 234 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 235 | /* HV KVM can only do PAPR mode for now */ |
Aneesh Kumar K.V | a78b55d | 2013-10-07 22:18:02 +0530 | [diff] [blame] | 236 | if (!vcpu->arch.papr_enabled && is_kvmppc_hv_enabled(vcpu->kvm)) |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 237 | goto out; |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 238 | |
Scott Wood | d30f6e4 | 2011-12-20 15:34:43 +0000 | [diff] [blame] | 239 | #ifdef CONFIG_KVM_BOOKE_HV |
| 240 | if (!cpu_has_feature(CPU_FTR_EMB_HV)) |
| 241 | goto out; |
| 242 | #endif |
| 243 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 244 | r = true; |
| 245 | |
| 246 | out: |
| 247 | vcpu->arch.sane = r; |
| 248 | return r ? 0 : -EINVAL; |
| 249 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 250 | EXPORT_SYMBOL_GPL(kvmppc_sanity_check); |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 251 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 252 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
| 253 | { |
| 254 | enum emulation_result er; |
| 255 | int r; |
| 256 | |
| 257 | er = kvmppc_emulate_instruction(run, vcpu); |
| 258 | switch (er) { |
| 259 | case EMULATE_DONE: |
| 260 | /* Future optimization: only reload non-volatiles if they were |
| 261 | * actually modified. */ |
| 262 | r = RESUME_GUEST_NV; |
| 263 | break; |
| 264 | case EMULATE_DO_MMIO: |
| 265 | run->exit_reason = KVM_EXIT_MMIO; |
| 266 | /* We must reload nonvolatiles because "update" load/store |
| 267 | * instructions modify register state. */ |
| 268 | /* Future optimization: only reload non-volatiles if they were |
| 269 | * actually modified. */ |
| 270 | r = RESUME_HOST_NV; |
| 271 | break; |
| 272 | case EMULATE_FAIL: |
| 273 | /* XXX Deliver Program interrupt to guest. */ |
| 274 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, |
Alexander Graf | c7f38f4 | 2010-04-16 00:11:40 +0200 | [diff] [blame] | 275 | kvmppc_get_last_inst(vcpu)); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 276 | r = RESUME_HOST; |
| 277 | break; |
| 278 | default: |
Alexander Graf | 5a33169 | 2012-12-14 23:46:03 +0100 | [diff] [blame] | 279 | WARN_ON(1); |
| 280 | r = RESUME_GUEST; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 281 | } |
| 282 | |
| 283 | return r; |
| 284 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 285 | EXPORT_SYMBOL_GPL(kvmppc_emulate_mmio); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 286 | |
Alexander Graf | 10474ae | 2009-09-15 11:37:46 +0200 | [diff] [blame] | 287 | int kvm_arch_hardware_enable(void *garbage) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 288 | { |
Alexander Graf | 10474ae | 2009-09-15 11:37:46 +0200 | [diff] [blame] | 289 | return 0; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 290 | } |
| 291 | |
| 292 | void kvm_arch_hardware_disable(void *garbage) |
| 293 | { |
| 294 | } |
| 295 | |
| 296 | int kvm_arch_hardware_setup(void) |
| 297 | { |
| 298 | return 0; |
| 299 | } |
| 300 | |
| 301 | void kvm_arch_hardware_unsetup(void) |
| 302 | { |
| 303 | } |
| 304 | |
| 305 | void kvm_arch_check_processor_compat(void *rtn) |
| 306 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 307 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 308 | } |
| 309 | |
Carsten Otte | e08b963 | 2012-01-04 10:25:20 +0100 | [diff] [blame] | 310 | int kvm_arch_init_vm(struct kvm *kvm, unsigned long type) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 311 | { |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 312 | struct kvmppc_ops *kvm_ops = NULL; |
| 313 | /* |
| 314 | * if we have both HV and PR enabled, default is HV |
| 315 | */ |
| 316 | if (type == 0) { |
| 317 | if (kvmppc_hv_ops) |
| 318 | kvm_ops = kvmppc_hv_ops; |
| 319 | else |
| 320 | kvm_ops = kvmppc_pr_ops; |
| 321 | if (!kvm_ops) |
| 322 | goto err_out; |
| 323 | } else if (type == KVM_VM_PPC_HV) { |
| 324 | if (!kvmppc_hv_ops) |
| 325 | goto err_out; |
| 326 | kvm_ops = kvmppc_hv_ops; |
| 327 | } else if (type == KVM_VM_PPC_PR) { |
| 328 | if (!kvmppc_pr_ops) |
| 329 | goto err_out; |
| 330 | kvm_ops = kvmppc_pr_ops; |
| 331 | } else |
| 332 | goto err_out; |
Carsten Otte | e08b963 | 2012-01-04 10:25:20 +0100 | [diff] [blame] | 333 | |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 334 | if (kvm_ops->owner && !try_module_get(kvm_ops->owner)) |
| 335 | return -ENOENT; |
| 336 | |
| 337 | kvm->arch.kvm_ops = kvm_ops; |
Paul Mackerras | f9e0554 | 2011-06-29 00:19:22 +0000 | [diff] [blame] | 338 | return kvmppc_core_init_vm(kvm); |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 339 | err_out: |
| 340 | return -EINVAL; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 341 | } |
| 342 | |
Jan Kiszka | d89f5ef | 2010-11-09 17:02:49 +0100 | [diff] [blame] | 343 | void kvm_arch_destroy_vm(struct kvm *kvm) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 344 | { |
| 345 | unsigned int i; |
Gleb Natapov | 988a2ca | 2009-06-09 15:56:29 +0300 | [diff] [blame] | 346 | struct kvm_vcpu *vcpu; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 347 | |
Gleb Natapov | 988a2ca | 2009-06-09 15:56:29 +0300 | [diff] [blame] | 348 | kvm_for_each_vcpu(i, vcpu, kvm) |
| 349 | kvm_arch_vcpu_free(vcpu); |
| 350 | |
| 351 | mutex_lock(&kvm->lock); |
| 352 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) |
| 353 | kvm->vcpus[i] = NULL; |
| 354 | |
| 355 | atomic_set(&kvm->online_vcpus, 0); |
Paul Mackerras | f9e0554 | 2011-06-29 00:19:22 +0000 | [diff] [blame] | 356 | |
| 357 | kvmppc_core_destroy_vm(kvm); |
| 358 | |
Gleb Natapov | 988a2ca | 2009-06-09 15:56:29 +0300 | [diff] [blame] | 359 | mutex_unlock(&kvm->lock); |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 360 | |
| 361 | /* drop the module reference */ |
| 362 | module_put(kvm->arch.kvm_ops->owner); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 363 | } |
| 364 | |
Sheng Yang | ad8ba2c | 2009-01-06 10:03:02 +0800 | [diff] [blame] | 365 | void kvm_arch_sync_events(struct kvm *kvm) |
| 366 | { |
| 367 | } |
| 368 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 369 | int kvm_dev_ioctl_check_extension(long ext) |
| 370 | { |
| 371 | int r; |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 372 | /* FIXME!! |
| 373 | * Should some of this be vm ioctl ? is it possible now ? |
| 374 | */ |
| 375 | int hv_enabled = kvmppc_hv_ops ? 1 : 0; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 376 | |
| 377 | switch (ext) { |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 378 | #ifdef CONFIG_BOOKE |
| 379 | case KVM_CAP_PPC_BOOKE_SREGS: |
Bharat Bhushan | f61c94b | 2012-08-08 20:38:19 +0000 | [diff] [blame] | 380 | case KVM_CAP_PPC_BOOKE_WATCHDOG: |
Alexander Graf | 1c81063 | 2013-01-04 18:12:48 +0100 | [diff] [blame] | 381 | case KVM_CAP_PPC_EPR: |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 382 | #else |
Alexander Graf | e15a113 | 2009-11-30 03:02:02 +0000 | [diff] [blame] | 383 | case KVM_CAP_PPC_SEGSTATE: |
Alexander Graf | 1022fc3 | 2011-09-14 21:45:23 +0200 | [diff] [blame] | 384 | case KVM_CAP_PPC_HIOR: |
Alexander Graf | 930b412 | 2011-08-08 17:29:42 +0200 | [diff] [blame] | 385 | case KVM_CAP_PPC_PAPR: |
Scott Wood | 5ce941e | 2011-04-27 17:24:21 -0500 | [diff] [blame] | 386 | #endif |
Alexander Graf | 1897876 | 2010-03-24 21:48:18 +0100 | [diff] [blame] | 387 | case KVM_CAP_PPC_UNSET_IRQ: |
Alexander Graf | 7b4203e | 2010-08-30 13:50:45 +0200 | [diff] [blame] | 388 | case KVM_CAP_PPC_IRQ_LEVEL: |
Alexander Graf | 71fbfd5 | 2010-03-24 21:48:29 +0100 | [diff] [blame] | 389 | case KVM_CAP_ENABLE_CAP: |
Alexander Graf | e24ed81 | 2011-09-14 10:02:41 +0200 | [diff] [blame] | 390 | case KVM_CAP_ONE_REG: |
Alexander Graf | 0e673fb | 2012-10-09 00:06:20 +0200 | [diff] [blame] | 391 | case KVM_CAP_IOEVENTFD: |
Scott Wood | 5df554a | 2013-04-12 14:08:46 +0000 | [diff] [blame] | 392 | case KVM_CAP_DEVICE_CTRL: |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 393 | r = 1; |
| 394 | break; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 395 | case KVM_CAP_PPC_PAIRED_SINGLES: |
Alexander Graf | ad0a048 | 2010-03-24 21:48:30 +0100 | [diff] [blame] | 396 | case KVM_CAP_PPC_OSI: |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 397 | case KVM_CAP_PPC_GET_PVINFO: |
Alexander Graf | bf7ca4b | 2012-02-15 23:40:00 +0000 | [diff] [blame] | 398 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
Scott Wood | dc83b8b | 2011-08-18 15:25:21 -0500 | [diff] [blame] | 399 | case KVM_CAP_SW_TLB: |
| 400 | #endif |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 401 | /* We support this only for PR */ |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 402 | r = !hv_enabled; |
Alexander Graf | e15a113 | 2009-11-30 03:02:02 +0000 | [diff] [blame] | 403 | break; |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 404 | #ifdef CONFIG_KVM_MMIO |
Laurent Vivier | 588968b | 2008-05-30 16:05:56 +0200 | [diff] [blame] | 405 | case KVM_CAP_COALESCED_MMIO: |
| 406 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; |
| 407 | break; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 408 | #endif |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 409 | #ifdef CONFIG_KVM_MPIC |
| 410 | case KVM_CAP_IRQ_MPIC: |
| 411 | r = 1; |
| 412 | break; |
| 413 | #endif |
| 414 | |
Benjamin Herrenschmidt | f31e65e | 2012-03-15 21:58:34 +0000 | [diff] [blame] | 415 | #ifdef CONFIG_PPC_BOOK3S_64 |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 416 | case KVM_CAP_SPAPR_TCE: |
Paul Mackerras | 32fad28 | 2012-05-04 02:32:53 +0000 | [diff] [blame] | 417 | case KVM_CAP_PPC_ALLOC_HTAB: |
Michael Ellerman | 8e591cb | 2013-04-17 20:30:00 +0000 | [diff] [blame] | 418 | case KVM_CAP_PPC_RTAS: |
Alexander Graf | f2e9104 | 2014-05-22 17:40:15 +0200 | [diff] [blame^] | 419 | case KVM_CAP_PPC_FIXUP_HCALL: |
Paul Mackerras | 5975a2e | 2013-04-27 00:28:37 +0000 | [diff] [blame] | 420 | #ifdef CONFIG_KVM_XICS |
| 421 | case KVM_CAP_IRQ_XICS: |
| 422 | #endif |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 423 | r = 1; |
| 424 | break; |
Benjamin Herrenschmidt | f31e65e | 2012-03-15 21:58:34 +0000 | [diff] [blame] | 425 | #endif /* CONFIG_PPC_BOOK3S_64 */ |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 426 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 427 | case KVM_CAP_PPC_SMT: |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 428 | if (hv_enabled) |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 429 | r = threads_per_core; |
| 430 | else |
| 431 | r = 0; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame] | 432 | break; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 433 | case KVM_CAP_PPC_RMA: |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 434 | r = hv_enabled; |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 435 | /* PPC970 requires an RMA */ |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 436 | if (r && cpu_has_feature(CPU_FTR_ARCH_201)) |
Paul Mackerras | 9e368f2 | 2011-06-29 00:40:08 +0000 | [diff] [blame] | 437 | r = 2; |
Paul Mackerras | aa04b4c | 2011-06-29 00:25:44 +0000 | [diff] [blame] | 438 | break; |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 439 | #endif |
Alexander Graf | f4800b1 | 2012-08-07 10:24:14 +0200 | [diff] [blame] | 440 | case KVM_CAP_SYNC_MMU: |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 441 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 442 | if (hv_enabled) |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 443 | r = cpu_has_feature(CPU_FTR_ARCH_206) ? 1 : 0; |
| 444 | else |
| 445 | r = 0; |
Alexander Graf | f4800b1 | 2012-08-07 10:24:14 +0200 | [diff] [blame] | 446 | #elif defined(KVM_ARCH_WANT_MMU_NOTIFIER) |
| 447 | r = 1; |
| 448 | #else |
| 449 | r = 0; |
Paul Mackerras | a293292 | 2012-11-19 22:57:20 +0000 | [diff] [blame] | 450 | #endif |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 451 | break; |
| 452 | #ifdef CONFIG_KVM_BOOK3S_HV_POSSIBLE |
Paul Mackerras | a293292 | 2012-11-19 22:57:20 +0000 | [diff] [blame] | 453 | case KVM_CAP_PPC_HTAB_FD: |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 454 | r = hv_enabled; |
Paul Mackerras | a293292 | 2012-11-19 22:57:20 +0000 | [diff] [blame] | 455 | break; |
Alexander Graf | f4800b1 | 2012-08-07 10:24:14 +0200 | [diff] [blame] | 456 | #endif |
Matt Evans | b543403 | 2011-12-07 16:55:57 +0000 | [diff] [blame] | 457 | case KVM_CAP_NR_VCPUS: |
| 458 | /* |
| 459 | * Recommending a number of CPUs is somewhat arbitrary; we |
| 460 | * return the number of present CPUs for -HV (since a host |
| 461 | * will have secondary threads "offline"), and for other KVM |
| 462 | * implementations just count online CPUs. |
| 463 | */ |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 464 | if (hv_enabled) |
Aneesh Kumar K.V | 699cc87 | 2013-10-07 22:17:56 +0530 | [diff] [blame] | 465 | r = num_present_cpus(); |
| 466 | else |
| 467 | r = num_online_cpus(); |
Matt Evans | b543403 | 2011-12-07 16:55:57 +0000 | [diff] [blame] | 468 | break; |
| 469 | case KVM_CAP_MAX_VCPUS: |
| 470 | r = KVM_MAX_VCPUS; |
| 471 | break; |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 472 | #ifdef CONFIG_PPC_BOOK3S_64 |
| 473 | case KVM_CAP_PPC_GET_SMMU_INFO: |
| 474 | r = 1; |
| 475 | break; |
| 476 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 477 | default: |
| 478 | r = 0; |
| 479 | break; |
| 480 | } |
| 481 | return r; |
| 482 | |
| 483 | } |
| 484 | |
| 485 | long kvm_arch_dev_ioctl(struct file *filp, |
| 486 | unsigned int ioctl, unsigned long arg) |
| 487 | { |
| 488 | return -EINVAL; |
| 489 | } |
| 490 | |
Aneesh Kumar K.V | 5587027 | 2013-10-07 22:18:00 +0530 | [diff] [blame] | 491 | void kvm_arch_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free, |
Takuya Yoshikawa | db3fe4e | 2012-02-08 13:02:18 +0900 | [diff] [blame] | 492 | struct kvm_memory_slot *dont) |
| 493 | { |
Aneesh Kumar K.V | 5587027 | 2013-10-07 22:18:00 +0530 | [diff] [blame] | 494 | kvmppc_core_free_memslot(kvm, free, dont); |
Takuya Yoshikawa | db3fe4e | 2012-02-08 13:02:18 +0900 | [diff] [blame] | 495 | } |
| 496 | |
Aneesh Kumar K.V | 5587027 | 2013-10-07 22:18:00 +0530 | [diff] [blame] | 497 | int kvm_arch_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot, |
| 498 | unsigned long npages) |
Takuya Yoshikawa | db3fe4e | 2012-02-08 13:02:18 +0900 | [diff] [blame] | 499 | { |
Aneesh Kumar K.V | 5587027 | 2013-10-07 22:18:00 +0530 | [diff] [blame] | 500 | return kvmppc_core_create_memslot(kvm, slot, npages); |
Takuya Yoshikawa | db3fe4e | 2012-02-08 13:02:18 +0900 | [diff] [blame] | 501 | } |
| 502 | |
Takuya Yoshikawa | e59dbe0 | 2013-07-04 13:40:29 +0900 | [diff] [blame] | 503 | void kvm_arch_memslots_updated(struct kvm *kvm) |
| 504 | { |
| 505 | } |
| 506 | |
Marcelo Tosatti | f7784b8 | 2009-12-23 14:35:18 -0200 | [diff] [blame] | 507 | int kvm_arch_prepare_memory_region(struct kvm *kvm, |
Takuya Yoshikawa | 462fce4 | 2013-02-27 19:41:56 +0900 | [diff] [blame] | 508 | struct kvm_memory_slot *memslot, |
Takuya Yoshikawa | 7b6195a | 2013-02-27 19:44:34 +0900 | [diff] [blame] | 509 | struct kvm_userspace_memory_region *mem, |
| 510 | enum kvm_mr_change change) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 511 | { |
Paul Mackerras | a66b48c | 2012-09-11 13:27:46 +0000 | [diff] [blame] | 512 | return kvmppc_core_prepare_memory_region(kvm, memslot, mem); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 513 | } |
| 514 | |
Marcelo Tosatti | f7784b8 | 2009-12-23 14:35:18 -0200 | [diff] [blame] | 515 | void kvm_arch_commit_memory_region(struct kvm *kvm, |
Takuya Yoshikawa | 462fce4 | 2013-02-27 19:41:56 +0900 | [diff] [blame] | 516 | struct kvm_userspace_memory_region *mem, |
Takuya Yoshikawa | 8482644 | 2013-02-27 19:45:25 +0900 | [diff] [blame] | 517 | const struct kvm_memory_slot *old, |
| 518 | enum kvm_mr_change change) |
Marcelo Tosatti | f7784b8 | 2009-12-23 14:35:18 -0200 | [diff] [blame] | 519 | { |
Paul Mackerras | dfe49db | 2012-09-11 13:28:18 +0000 | [diff] [blame] | 520 | kvmppc_core_commit_memory_region(kvm, mem, old); |
Marcelo Tosatti | f7784b8 | 2009-12-23 14:35:18 -0200 | [diff] [blame] | 521 | } |
| 522 | |
Marcelo Tosatti | 2df72e9 | 2012-08-24 15:54:57 -0300 | [diff] [blame] | 523 | void kvm_arch_flush_shadow_all(struct kvm *kvm) |
| 524 | { |
| 525 | } |
Marcelo Tosatti | f7784b8 | 2009-12-23 14:35:18 -0200 | [diff] [blame] | 526 | |
Marcelo Tosatti | 2df72e9 | 2012-08-24 15:54:57 -0300 | [diff] [blame] | 527 | void kvm_arch_flush_shadow_memslot(struct kvm *kvm, |
| 528 | struct kvm_memory_slot *slot) |
Marcelo Tosatti | 34d4cb8 | 2008-07-10 20:49:31 -0300 | [diff] [blame] | 529 | { |
Paul Mackerras | dfe49db | 2012-09-11 13:28:18 +0000 | [diff] [blame] | 530 | kvmppc_core_flush_memslot(kvm, slot); |
Marcelo Tosatti | 34d4cb8 | 2008-07-10 20:49:31 -0300 | [diff] [blame] | 531 | } |
| 532 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 533 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
| 534 | { |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 535 | struct kvm_vcpu *vcpu; |
| 536 | vcpu = kvmppc_core_vcpu_create(kvm, id); |
Matt Evans | 03cdab5 | 2011-12-06 21:19:42 +0000 | [diff] [blame] | 537 | if (!IS_ERR(vcpu)) { |
| 538 | vcpu->arch.wqp = &vcpu->wq; |
Wei Yongjun | 06056bf | 2010-03-09 14:13:43 +0800 | [diff] [blame] | 539 | kvmppc_create_vcpu_debugfs(vcpu, id); |
Matt Evans | 03cdab5 | 2011-12-06 21:19:42 +0000 | [diff] [blame] | 540 | } |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 541 | return vcpu; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 542 | } |
| 543 | |
Marcelo Tosatti | 42897d8 | 2012-11-27 23:29:02 -0200 | [diff] [blame] | 544 | int kvm_arch_vcpu_postcreate(struct kvm_vcpu *vcpu) |
| 545 | { |
| 546 | return 0; |
| 547 | } |
| 548 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 549 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
| 550 | { |
Alexander Graf | a595405 | 2010-02-22 16:52:14 +0100 | [diff] [blame] | 551 | /* Make sure we're not using the vcpu anymore */ |
| 552 | hrtimer_cancel(&vcpu->arch.dec_timer); |
| 553 | tasklet_kill(&vcpu->arch.tasklet); |
| 554 | |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 555 | kvmppc_remove_vcpu_debugfs(vcpu); |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 556 | |
| 557 | switch (vcpu->arch.irq_type) { |
| 558 | case KVMPPC_IRQ_MPIC: |
| 559 | kvmppc_mpic_disconnect_vcpu(vcpu->arch.mpic, vcpu); |
| 560 | break; |
Benjamin Herrenschmidt | bc5ad3f | 2013-04-17 20:30:26 +0000 | [diff] [blame] | 561 | case KVMPPC_IRQ_XICS: |
| 562 | kvmppc_xics_free_icp(vcpu); |
| 563 | break; |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 564 | } |
| 565 | |
Hollis Blanchard | db93f57 | 2008-11-05 09:36:18 -0600 | [diff] [blame] | 566 | kvmppc_core_vcpu_free(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 567 | } |
| 568 | |
| 569 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) |
| 570 | { |
| 571 | kvm_arch_vcpu_free(vcpu); |
| 572 | } |
| 573 | |
| 574 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
| 575 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 576 | return kvmppc_core_pending_dec(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 577 | } |
| 578 | |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 579 | /* |
| 580 | * low level hrtimer wake routine. Because this runs in hardirq context |
| 581 | * we schedule a tasklet to do the real work. |
| 582 | */ |
| 583 | enum hrtimer_restart kvmppc_decrementer_wakeup(struct hrtimer *timer) |
| 584 | { |
| 585 | struct kvm_vcpu *vcpu; |
| 586 | |
| 587 | vcpu = container_of(timer, struct kvm_vcpu, arch.dec_timer); |
| 588 | tasklet_schedule(&vcpu->arch.tasklet); |
| 589 | |
| 590 | return HRTIMER_NORESTART; |
| 591 | } |
| 592 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 593 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
| 594 | { |
Bharat Bhushan | f61c94b | 2012-08-08 20:38:19 +0000 | [diff] [blame] | 595 | int ret; |
| 596 | |
Alexander Graf | 544c676 | 2009-11-02 12:02:31 +0000 | [diff] [blame] | 597 | hrtimer_init(&vcpu->arch.dec_timer, CLOCK_REALTIME, HRTIMER_MODE_ABS); |
| 598 | tasklet_init(&vcpu->arch.tasklet, kvmppc_decrementer_func, (ulong)vcpu); |
| 599 | vcpu->arch.dec_timer.function = kvmppc_decrementer_wakeup; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 600 | vcpu->arch.dec_expires = ~(u64)0; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 601 | |
Bharat Bhushan | 09000ad | 2011-03-25 10:32:13 +0530 | [diff] [blame] | 602 | #ifdef CONFIG_KVM_EXIT_TIMING |
| 603 | mutex_init(&vcpu->arch.exit_timing_lock); |
| 604 | #endif |
Bharat Bhushan | f61c94b | 2012-08-08 20:38:19 +0000 | [diff] [blame] | 605 | ret = kvmppc_subarch_vcpu_init(vcpu); |
| 606 | return ret; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 607 | } |
| 608 | |
| 609 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) |
| 610 | { |
Hollis Blanchard | ecc0981 | 2009-01-03 16:22:59 -0600 | [diff] [blame] | 611 | kvmppc_mmu_destroy(vcpu); |
Bharat Bhushan | f61c94b | 2012-08-08 20:38:19 +0000 | [diff] [blame] | 612 | kvmppc_subarch_vcpu_uninit(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 613 | } |
| 614 | |
| 615 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
| 616 | { |
Scott Wood | eab1767 | 2011-04-27 17:24:10 -0500 | [diff] [blame] | 617 | #ifdef CONFIG_BOOKE |
| 618 | /* |
| 619 | * vrsave (formerly usprg0) isn't used by Linux, but may |
| 620 | * be used by the guest. |
| 621 | * |
| 622 | * On non-booke this is associated with Altivec and |
| 623 | * is handled by code in book3s.c. |
| 624 | */ |
| 625 | mtspr(SPRN_VRSAVE, vcpu->arch.vrsave); |
| 626 | #endif |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 627 | kvmppc_core_vcpu_load(vcpu, cpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 628 | } |
| 629 | |
| 630 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) |
| 631 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 632 | kvmppc_core_vcpu_put(vcpu); |
Scott Wood | eab1767 | 2011-04-27 17:24:10 -0500 | [diff] [blame] | 633 | #ifdef CONFIG_BOOKE |
| 634 | vcpu->arch.vrsave = mfspr(SPRN_VRSAVE); |
| 635 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 636 | } |
| 637 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 638 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
| 639 | struct kvm_run *run) |
| 640 | { |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 641 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, run->dcr.data); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 642 | } |
| 643 | |
| 644 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, |
| 645 | struct kvm_run *run) |
| 646 | { |
Denis Kirjanov | 69b6183 | 2010-06-11 11:23:26 +0000 | [diff] [blame] | 647 | u64 uninitialized_var(gpr); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 648 | |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 649 | if (run->mmio.len > sizeof(gpr)) { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 650 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
| 651 | return; |
| 652 | } |
| 653 | |
| 654 | if (vcpu->arch.mmio_is_bigendian) { |
| 655 | switch (run->mmio.len) { |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 656 | case 8: gpr = *(u64 *)run->mmio.data; break; |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 657 | case 4: gpr = *(u32 *)run->mmio.data; break; |
| 658 | case 2: gpr = *(u16 *)run->mmio.data; break; |
| 659 | case 1: gpr = *(u8 *)run->mmio.data; break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 660 | } |
| 661 | } else { |
| 662 | /* Convert BE data from userland back to LE. */ |
| 663 | switch (run->mmio.len) { |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 664 | case 4: gpr = ld_le32((u32 *)run->mmio.data); break; |
| 665 | case 2: gpr = ld_le16((u16 *)run->mmio.data); break; |
| 666 | case 1: gpr = *(u8 *)run->mmio.data; break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 667 | } |
| 668 | } |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 669 | |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 670 | if (vcpu->arch.mmio_sign_extend) { |
| 671 | switch (run->mmio.len) { |
| 672 | #ifdef CONFIG_PPC64 |
| 673 | case 4: |
| 674 | gpr = (s64)(s32)gpr; |
| 675 | break; |
| 676 | #endif |
| 677 | case 2: |
| 678 | gpr = (s64)(s16)gpr; |
| 679 | break; |
| 680 | case 1: |
| 681 | gpr = (s64)(s8)gpr; |
| 682 | break; |
| 683 | } |
| 684 | } |
| 685 | |
Alexander Graf | 8e5b26b | 2010-01-08 02:58:01 +0100 | [diff] [blame] | 686 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 687 | |
Alexander Graf | b3c5d3c | 2012-01-07 02:07:38 +0100 | [diff] [blame] | 688 | switch (vcpu->arch.io_gpr & KVM_MMIO_REG_EXT_MASK) { |
| 689 | case KVM_MMIO_REG_GPR: |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 690 | kvmppc_set_gpr(vcpu, vcpu->arch.io_gpr, gpr); |
| 691 | break; |
Alexander Graf | b3c5d3c | 2012-01-07 02:07:38 +0100 | [diff] [blame] | 692 | case KVM_MMIO_REG_FPR: |
Paul Mackerras | efff191 | 2013-10-15 20:43:02 +1100 | [diff] [blame] | 693 | VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr; |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 694 | break; |
Alexander Graf | 287d561 | 2010-04-01 15:33:21 +0200 | [diff] [blame] | 695 | #ifdef CONFIG_PPC_BOOK3S |
Alexander Graf | b3c5d3c | 2012-01-07 02:07:38 +0100 | [diff] [blame] | 696 | case KVM_MMIO_REG_QPR: |
| 697 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 698 | break; |
Alexander Graf | b3c5d3c | 2012-01-07 02:07:38 +0100 | [diff] [blame] | 699 | case KVM_MMIO_REG_FQPR: |
Paul Mackerras | efff191 | 2013-10-15 20:43:02 +1100 | [diff] [blame] | 700 | VCPU_FPR(vcpu, vcpu->arch.io_gpr & KVM_MMIO_REG_MASK) = gpr; |
Alexander Graf | b3c5d3c | 2012-01-07 02:07:38 +0100 | [diff] [blame] | 701 | vcpu->arch.qpr[vcpu->arch.io_gpr & KVM_MMIO_REG_MASK] = gpr; |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 702 | break; |
Alexander Graf | 287d561 | 2010-04-01 15:33:21 +0200 | [diff] [blame] | 703 | #endif |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 704 | default: |
| 705 | BUG(); |
| 706 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 707 | } |
| 708 | |
| 709 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, |
Cédric Le Goater | 7360177 | 2014-01-09 11:51:16 +0100 | [diff] [blame] | 710 | unsigned int rt, unsigned int bytes, |
| 711 | int is_default_endian) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 712 | { |
Scott Wood | ed840ee | 2013-04-26 14:53:39 +0000 | [diff] [blame] | 713 | int idx, ret; |
Cédric Le Goater | 7360177 | 2014-01-09 11:51:16 +0100 | [diff] [blame] | 714 | int is_bigendian; |
| 715 | |
| 716 | if (kvmppc_need_byteswap(vcpu)) { |
| 717 | /* Default endianness is "little endian". */ |
| 718 | is_bigendian = !is_default_endian; |
| 719 | } else { |
| 720 | /* Default endianness is "big endian". */ |
| 721 | is_bigendian = is_default_endian; |
| 722 | } |
Scott Wood | ed840ee | 2013-04-26 14:53:39 +0000 | [diff] [blame] | 723 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 724 | if (bytes > sizeof(run->mmio.data)) { |
| 725 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, |
| 726 | run->mmio.len); |
| 727 | } |
| 728 | |
| 729 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; |
| 730 | run->mmio.len = bytes; |
| 731 | run->mmio.is_write = 0; |
| 732 | |
| 733 | vcpu->arch.io_gpr = rt; |
| 734 | vcpu->arch.mmio_is_bigendian = is_bigendian; |
| 735 | vcpu->mmio_needed = 1; |
| 736 | vcpu->mmio_is_write = 0; |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 737 | vcpu->arch.mmio_sign_extend = 0; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 738 | |
Scott Wood | ed840ee | 2013-04-26 14:53:39 +0000 | [diff] [blame] | 739 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
| 740 | |
| 741 | ret = kvm_io_bus_read(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, |
| 742 | bytes, &run->mmio.data); |
| 743 | |
| 744 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
| 745 | |
| 746 | if (!ret) { |
Alexander Graf | 0e673fb | 2012-10-09 00:06:20 +0200 | [diff] [blame] | 747 | kvmppc_complete_mmio_load(vcpu, run); |
| 748 | vcpu->mmio_needed = 0; |
| 749 | return EMULATE_DONE; |
| 750 | } |
| 751 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 752 | return EMULATE_DO_MMIO; |
| 753 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 754 | EXPORT_SYMBOL_GPL(kvmppc_handle_load); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 755 | |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 756 | /* Same as above, but sign extends */ |
| 757 | int kvmppc_handle_loads(struct kvm_run *run, struct kvm_vcpu *vcpu, |
Cédric Le Goater | 7360177 | 2014-01-09 11:51:16 +0100 | [diff] [blame] | 758 | unsigned int rt, unsigned int bytes, |
| 759 | int is_default_endian) |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 760 | { |
| 761 | int r; |
| 762 | |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 763 | vcpu->arch.mmio_sign_extend = 1; |
Cédric Le Goater | 7360177 | 2014-01-09 11:51:16 +0100 | [diff] [blame] | 764 | r = kvmppc_handle_load(run, vcpu, rt, bytes, is_default_endian); |
Alexander Graf | 3587d53 | 2010-02-19 11:00:30 +0100 | [diff] [blame] | 765 | |
| 766 | return r; |
| 767 | } |
| 768 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 769 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
Cédric Le Goater | 7360177 | 2014-01-09 11:51:16 +0100 | [diff] [blame] | 770 | u64 val, unsigned int bytes, int is_default_endian) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 771 | { |
| 772 | void *data = run->mmio.data; |
Scott Wood | ed840ee | 2013-04-26 14:53:39 +0000 | [diff] [blame] | 773 | int idx, ret; |
Cédric Le Goater | 7360177 | 2014-01-09 11:51:16 +0100 | [diff] [blame] | 774 | int is_bigendian; |
| 775 | |
| 776 | if (kvmppc_need_byteswap(vcpu)) { |
| 777 | /* Default endianness is "little endian". */ |
| 778 | is_bigendian = !is_default_endian; |
| 779 | } else { |
| 780 | /* Default endianness is "big endian". */ |
| 781 | is_bigendian = is_default_endian; |
| 782 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 783 | |
| 784 | if (bytes > sizeof(run->mmio.data)) { |
| 785 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, |
| 786 | run->mmio.len); |
| 787 | } |
| 788 | |
| 789 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; |
| 790 | run->mmio.len = bytes; |
| 791 | run->mmio.is_write = 1; |
| 792 | vcpu->mmio_needed = 1; |
| 793 | vcpu->mmio_is_write = 1; |
| 794 | |
| 795 | /* Store the value at the lowest bytes in 'data'. */ |
| 796 | if (is_bigendian) { |
| 797 | switch (bytes) { |
Alexander Graf | b104d06 | 2010-02-19 11:00:29 +0100 | [diff] [blame] | 798 | case 8: *(u64 *)data = val; break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 799 | case 4: *(u32 *)data = val; break; |
| 800 | case 2: *(u16 *)data = val; break; |
| 801 | case 1: *(u8 *)data = val; break; |
| 802 | } |
| 803 | } else { |
| 804 | /* Store LE value into 'data'. */ |
| 805 | switch (bytes) { |
| 806 | case 4: st_le32(data, val); break; |
| 807 | case 2: st_le16(data, val); break; |
| 808 | case 1: *(u8 *)data = val; break; |
| 809 | } |
| 810 | } |
| 811 | |
Scott Wood | ed840ee | 2013-04-26 14:53:39 +0000 | [diff] [blame] | 812 | idx = srcu_read_lock(&vcpu->kvm->srcu); |
| 813 | |
| 814 | ret = kvm_io_bus_write(vcpu->kvm, KVM_MMIO_BUS, run->mmio.phys_addr, |
| 815 | bytes, &run->mmio.data); |
| 816 | |
| 817 | srcu_read_unlock(&vcpu->kvm->srcu, idx); |
| 818 | |
| 819 | if (!ret) { |
Alexander Graf | 0e673fb | 2012-10-09 00:06:20 +0200 | [diff] [blame] | 820 | vcpu->mmio_needed = 0; |
| 821 | return EMULATE_DONE; |
| 822 | } |
| 823 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 824 | return EMULATE_DO_MMIO; |
| 825 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 826 | EXPORT_SYMBOL_GPL(kvmppc_handle_store); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 827 | |
| 828 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) |
| 829 | { |
| 830 | int r; |
| 831 | sigset_t sigsaved; |
| 832 | |
| 833 | if (vcpu->sigset_active) |
| 834 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); |
| 835 | |
| 836 | if (vcpu->mmio_needed) { |
| 837 | if (!vcpu->mmio_is_write) |
| 838 | kvmppc_complete_mmio_load(vcpu, run); |
| 839 | vcpu->mmio_needed = 0; |
| 840 | } else if (vcpu->arch.dcr_needed) { |
| 841 | if (!vcpu->arch.dcr_is_write) |
| 842 | kvmppc_complete_dcr_load(vcpu, run); |
| 843 | vcpu->arch.dcr_needed = 0; |
Alexander Graf | ad0a048 | 2010-03-24 21:48:30 +0100 | [diff] [blame] | 844 | } else if (vcpu->arch.osi_needed) { |
| 845 | u64 *gprs = run->osi.gprs; |
| 846 | int i; |
| 847 | |
| 848 | for (i = 0; i < 32; i++) |
| 849 | kvmppc_set_gpr(vcpu, i, gprs[i]); |
| 850 | vcpu->arch.osi_needed = 0; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 851 | } else if (vcpu->arch.hcall_needed) { |
| 852 | int i; |
| 853 | |
| 854 | kvmppc_set_gpr(vcpu, 3, run->papr_hcall.ret); |
| 855 | for (i = 0; i < 9; ++i) |
| 856 | kvmppc_set_gpr(vcpu, 4 + i, run->papr_hcall.args[i]); |
| 857 | vcpu->arch.hcall_needed = 0; |
Alexander Graf | 1c81063 | 2013-01-04 18:12:48 +0100 | [diff] [blame] | 858 | #ifdef CONFIG_BOOKE |
| 859 | } else if (vcpu->arch.epr_needed) { |
| 860 | kvmppc_set_epr(vcpu, run->epr.epr); |
| 861 | vcpu->arch.epr_needed = 0; |
| 862 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 863 | } |
| 864 | |
Paul Mackerras | df6909e5 | 2011-06-29 00:19:50 +0000 | [diff] [blame] | 865 | r = kvmppc_vcpu_run(run, vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 866 | |
| 867 | if (vcpu->sigset_active) |
| 868 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); |
| 869 | |
| 870 | return r; |
| 871 | } |
| 872 | |
| 873 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) |
| 874 | { |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 875 | if (irq->irq == KVM_INTERRUPT_UNSET) { |
Paul Mackerras | 4fe27d2 | 2013-02-14 14:00:25 +0000 | [diff] [blame] | 876 | kvmppc_core_dequeue_external(vcpu); |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 877 | return 0; |
| 878 | } |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 879 | |
Paul Mackerras | 19ccb76 | 2011-07-23 17:42:46 +1000 | [diff] [blame] | 880 | kvmppc_core_queue_external(vcpu, irq); |
Christoffer Dall | b6d3383 | 2012-03-08 16:44:24 -0500 | [diff] [blame] | 881 | |
Scott Wood | dfd4d47 | 2011-11-17 12:39:59 +0000 | [diff] [blame] | 882 | kvm_vcpu_kick(vcpu); |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 883 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 884 | return 0; |
| 885 | } |
| 886 | |
Alexander Graf | 71fbfd5 | 2010-03-24 21:48:29 +0100 | [diff] [blame] | 887 | static int kvm_vcpu_ioctl_enable_cap(struct kvm_vcpu *vcpu, |
| 888 | struct kvm_enable_cap *cap) |
| 889 | { |
| 890 | int r; |
| 891 | |
| 892 | if (cap->flags) |
| 893 | return -EINVAL; |
| 894 | |
| 895 | switch (cap->cap) { |
Alexander Graf | ad0a048 | 2010-03-24 21:48:30 +0100 | [diff] [blame] | 896 | case KVM_CAP_PPC_OSI: |
| 897 | r = 0; |
| 898 | vcpu->arch.osi_enabled = true; |
| 899 | break; |
Alexander Graf | 930b412 | 2011-08-08 17:29:42 +0200 | [diff] [blame] | 900 | case KVM_CAP_PPC_PAPR: |
| 901 | r = 0; |
| 902 | vcpu->arch.papr_enabled = true; |
| 903 | break; |
Alexander Graf | 1c81063 | 2013-01-04 18:12:48 +0100 | [diff] [blame] | 904 | case KVM_CAP_PPC_EPR: |
| 905 | r = 0; |
Scott Wood | 5df554a | 2013-04-12 14:08:46 +0000 | [diff] [blame] | 906 | if (cap->args[0]) |
| 907 | vcpu->arch.epr_flags |= KVMPPC_EPR_USER; |
| 908 | else |
| 909 | vcpu->arch.epr_flags &= ~KVMPPC_EPR_USER; |
Alexander Graf | 1c81063 | 2013-01-04 18:12:48 +0100 | [diff] [blame] | 910 | break; |
Bharat Bhushan | f61c94b | 2012-08-08 20:38:19 +0000 | [diff] [blame] | 911 | #ifdef CONFIG_BOOKE |
| 912 | case KVM_CAP_PPC_BOOKE_WATCHDOG: |
| 913 | r = 0; |
| 914 | vcpu->arch.watchdog_enabled = true; |
| 915 | break; |
| 916 | #endif |
Alexander Graf | bf7ca4b | 2012-02-15 23:40:00 +0000 | [diff] [blame] | 917 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
Scott Wood | dc83b8b | 2011-08-18 15:25:21 -0500 | [diff] [blame] | 918 | case KVM_CAP_SW_TLB: { |
| 919 | struct kvm_config_tlb cfg; |
| 920 | void __user *user_ptr = (void __user *)(uintptr_t)cap->args[0]; |
| 921 | |
| 922 | r = -EFAULT; |
| 923 | if (copy_from_user(&cfg, user_ptr, sizeof(cfg))) |
| 924 | break; |
| 925 | |
| 926 | r = kvm_vcpu_ioctl_config_tlb(vcpu, &cfg); |
| 927 | break; |
| 928 | } |
| 929 | #endif |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 930 | #ifdef CONFIG_KVM_MPIC |
| 931 | case KVM_CAP_IRQ_MPIC: { |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 932 | struct fd f; |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 933 | struct kvm_device *dev; |
| 934 | |
| 935 | r = -EBADF; |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 936 | f = fdget(cap->args[0]); |
| 937 | if (!f.file) |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 938 | break; |
| 939 | |
| 940 | r = -EPERM; |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 941 | dev = kvm_device_from_filp(f.file); |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 942 | if (dev) |
| 943 | r = kvmppc_mpic_connect_vcpu(dev, vcpu, cap->args[1]); |
| 944 | |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 945 | fdput(f); |
Scott Wood | eb1e4f4 | 2013-04-12 14:08:47 +0000 | [diff] [blame] | 946 | break; |
| 947 | } |
| 948 | #endif |
Paul Mackerras | 5975a2e | 2013-04-27 00:28:37 +0000 | [diff] [blame] | 949 | #ifdef CONFIG_KVM_XICS |
| 950 | case KVM_CAP_IRQ_XICS: { |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 951 | struct fd f; |
Paul Mackerras | 5975a2e | 2013-04-27 00:28:37 +0000 | [diff] [blame] | 952 | struct kvm_device *dev; |
| 953 | |
| 954 | r = -EBADF; |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 955 | f = fdget(cap->args[0]); |
| 956 | if (!f.file) |
Paul Mackerras | 5975a2e | 2013-04-27 00:28:37 +0000 | [diff] [blame] | 957 | break; |
| 958 | |
| 959 | r = -EPERM; |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 960 | dev = kvm_device_from_filp(f.file); |
Paul Mackerras | 5975a2e | 2013-04-27 00:28:37 +0000 | [diff] [blame] | 961 | if (dev) |
| 962 | r = kvmppc_xics_connect_vcpu(dev, vcpu, cap->args[1]); |
| 963 | |
Al Viro | 70abade | 2013-08-30 15:04:22 -0400 | [diff] [blame] | 964 | fdput(f); |
Paul Mackerras | 5975a2e | 2013-04-27 00:28:37 +0000 | [diff] [blame] | 965 | break; |
| 966 | } |
| 967 | #endif /* CONFIG_KVM_XICS */ |
Alexander Graf | 71fbfd5 | 2010-03-24 21:48:29 +0100 | [diff] [blame] | 968 | default: |
| 969 | r = -EINVAL; |
| 970 | break; |
| 971 | } |
| 972 | |
Alexander Graf | af8f38b | 2011-08-10 13:57:08 +0200 | [diff] [blame] | 973 | if (!r) |
| 974 | r = kvmppc_sanity_check(vcpu); |
| 975 | |
Alexander Graf | 71fbfd5 | 2010-03-24 21:48:29 +0100 | [diff] [blame] | 976 | return r; |
| 977 | } |
| 978 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 979 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
| 980 | struct kvm_mp_state *mp_state) |
| 981 | { |
| 982 | return -EINVAL; |
| 983 | } |
| 984 | |
| 985 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, |
| 986 | struct kvm_mp_state *mp_state) |
| 987 | { |
| 988 | return -EINVAL; |
| 989 | } |
| 990 | |
| 991 | long kvm_arch_vcpu_ioctl(struct file *filp, |
| 992 | unsigned int ioctl, unsigned long arg) |
| 993 | { |
| 994 | struct kvm_vcpu *vcpu = filp->private_data; |
| 995 | void __user *argp = (void __user *)arg; |
| 996 | long r; |
| 997 | |
Avi Kivity | 9373662 | 2010-05-13 12:35:17 +0300 | [diff] [blame] | 998 | switch (ioctl) { |
| 999 | case KVM_INTERRUPT: { |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1000 | struct kvm_interrupt irq; |
| 1001 | r = -EFAULT; |
| 1002 | if (copy_from_user(&irq, argp, sizeof(irq))) |
Avi Kivity | 9373662 | 2010-05-13 12:35:17 +0300 | [diff] [blame] | 1003 | goto out; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1004 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
Avi Kivity | 9373662 | 2010-05-13 12:35:17 +0300 | [diff] [blame] | 1005 | goto out; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1006 | } |
Avi Kivity | 19483d1 | 2010-05-13 12:30:43 +0300 | [diff] [blame] | 1007 | |
Alexander Graf | 71fbfd5 | 2010-03-24 21:48:29 +0100 | [diff] [blame] | 1008 | case KVM_ENABLE_CAP: |
| 1009 | { |
| 1010 | struct kvm_enable_cap cap; |
| 1011 | r = -EFAULT; |
| 1012 | if (copy_from_user(&cap, argp, sizeof(cap))) |
| 1013 | goto out; |
| 1014 | r = kvm_vcpu_ioctl_enable_cap(vcpu, &cap); |
| 1015 | break; |
| 1016 | } |
Scott Wood | dc83b8b | 2011-08-18 15:25:21 -0500 | [diff] [blame] | 1017 | |
Alexander Graf | e24ed81 | 2011-09-14 10:02:41 +0200 | [diff] [blame] | 1018 | case KVM_SET_ONE_REG: |
| 1019 | case KVM_GET_ONE_REG: |
| 1020 | { |
| 1021 | struct kvm_one_reg reg; |
| 1022 | r = -EFAULT; |
| 1023 | if (copy_from_user(®, argp, sizeof(reg))) |
| 1024 | goto out; |
| 1025 | if (ioctl == KVM_SET_ONE_REG) |
| 1026 | r = kvm_vcpu_ioctl_set_one_reg(vcpu, ®); |
| 1027 | else |
| 1028 | r = kvm_vcpu_ioctl_get_one_reg(vcpu, ®); |
| 1029 | break; |
| 1030 | } |
| 1031 | |
Alexander Graf | bf7ca4b | 2012-02-15 23:40:00 +0000 | [diff] [blame] | 1032 | #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC) |
Scott Wood | dc83b8b | 2011-08-18 15:25:21 -0500 | [diff] [blame] | 1033 | case KVM_DIRTY_TLB: { |
| 1034 | struct kvm_dirty_tlb dirty; |
| 1035 | r = -EFAULT; |
| 1036 | if (copy_from_user(&dirty, argp, sizeof(dirty))) |
| 1037 | goto out; |
| 1038 | r = kvm_vcpu_ioctl_dirty_tlb(vcpu, &dirty); |
| 1039 | break; |
| 1040 | } |
| 1041 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1042 | default: |
| 1043 | r = -EINVAL; |
| 1044 | } |
| 1045 | |
| 1046 | out: |
| 1047 | return r; |
| 1048 | } |
| 1049 | |
Carsten Otte | 5b1c149 | 2012-01-04 10:25:23 +0100 | [diff] [blame] | 1050 | int kvm_arch_vcpu_fault(struct kvm_vcpu *vcpu, struct vm_fault *vmf) |
| 1051 | { |
| 1052 | return VM_FAULT_SIGBUS; |
| 1053 | } |
| 1054 | |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1055 | static int kvm_vm_ioctl_get_pvinfo(struct kvm_ppc_pvinfo *pvinfo) |
| 1056 | { |
Stuart Yoder | 784bafa | 2012-07-03 05:48:51 +0000 | [diff] [blame] | 1057 | u32 inst_nop = 0x60000000; |
| 1058 | #ifdef CONFIG_KVM_BOOKE_HV |
| 1059 | u32 inst_sc1 = 0x44000022; |
Alexander Graf | 2743103 | 2014-04-24 13:39:16 +0200 | [diff] [blame] | 1060 | pvinfo->hcall[0] = cpu_to_be32(inst_sc1); |
| 1061 | pvinfo->hcall[1] = cpu_to_be32(inst_nop); |
| 1062 | pvinfo->hcall[2] = cpu_to_be32(inst_nop); |
| 1063 | pvinfo->hcall[3] = cpu_to_be32(inst_nop); |
Stuart Yoder | 784bafa | 2012-07-03 05:48:51 +0000 | [diff] [blame] | 1064 | #else |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1065 | u32 inst_lis = 0x3c000000; |
| 1066 | u32 inst_ori = 0x60000000; |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1067 | u32 inst_sc = 0x44000002; |
| 1068 | u32 inst_imm_mask = 0xffff; |
| 1069 | |
| 1070 | /* |
| 1071 | * The hypercall to get into KVM from within guest context is as |
| 1072 | * follows: |
| 1073 | * |
| 1074 | * lis r0, r0, KVM_SC_MAGIC_R0@h |
| 1075 | * ori r0, KVM_SC_MAGIC_R0@l |
| 1076 | * sc |
| 1077 | * nop |
| 1078 | */ |
Alexander Graf | 2743103 | 2014-04-24 13:39:16 +0200 | [diff] [blame] | 1079 | pvinfo->hcall[0] = cpu_to_be32(inst_lis | ((KVM_SC_MAGIC_R0 >> 16) & inst_imm_mask)); |
| 1080 | pvinfo->hcall[1] = cpu_to_be32(inst_ori | (KVM_SC_MAGIC_R0 & inst_imm_mask)); |
| 1081 | pvinfo->hcall[2] = cpu_to_be32(inst_sc); |
| 1082 | pvinfo->hcall[3] = cpu_to_be32(inst_nop); |
Stuart Yoder | 784bafa | 2012-07-03 05:48:51 +0000 | [diff] [blame] | 1083 | #endif |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1084 | |
Liu Yu-B13201 | 9202e07 | 2012-07-03 05:48:52 +0000 | [diff] [blame] | 1085 | pvinfo->flags = KVM_PPC_PVINFO_FLAGS_EV_IDLE; |
| 1086 | |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1087 | return 0; |
| 1088 | } |
| 1089 | |
Alexander Graf | 5efdb4b | 2013-04-17 00:37:57 +0200 | [diff] [blame] | 1090 | int kvm_vm_ioctl_irq_line(struct kvm *kvm, struct kvm_irq_level *irq_event, |
| 1091 | bool line_status) |
| 1092 | { |
| 1093 | if (!irqchip_in_kernel(kvm)) |
| 1094 | return -ENXIO; |
| 1095 | |
| 1096 | irq_event->status = kvm_set_irq(kvm, KVM_USERSPACE_IRQ_SOURCE_ID, |
| 1097 | irq_event->irq, irq_event->level, |
| 1098 | line_status); |
| 1099 | return 0; |
| 1100 | } |
| 1101 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1102 | long kvm_arch_vm_ioctl(struct file *filp, |
| 1103 | unsigned int ioctl, unsigned long arg) |
| 1104 | { |
Scott Wood | 5df554a | 2013-04-12 14:08:46 +0000 | [diff] [blame] | 1105 | struct kvm *kvm __maybe_unused = filp->private_data; |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1106 | void __user *argp = (void __user *)arg; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1107 | long r; |
| 1108 | |
| 1109 | switch (ioctl) { |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1110 | case KVM_PPC_GET_PVINFO: { |
| 1111 | struct kvm_ppc_pvinfo pvinfo; |
Vasiliy Kulikov | d8cdddc | 2010-10-30 13:04:24 +0400 | [diff] [blame] | 1112 | memset(&pvinfo, 0, sizeof(pvinfo)); |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1113 | r = kvm_vm_ioctl_get_pvinfo(&pvinfo); |
| 1114 | if (copy_to_user(argp, &pvinfo, sizeof(pvinfo))) { |
| 1115 | r = -EFAULT; |
| 1116 | goto out; |
| 1117 | } |
| 1118 | |
| 1119 | break; |
| 1120 | } |
Benjamin Herrenschmidt | f31e65e | 2012-03-15 21:58:34 +0000 | [diff] [blame] | 1121 | #ifdef CONFIG_PPC_BOOK3S_64 |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 1122 | case KVM_CREATE_SPAPR_TCE: { |
| 1123 | struct kvm_create_spapr_tce create_tce; |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 1124 | |
| 1125 | r = -EFAULT; |
| 1126 | if (copy_from_user(&create_tce, argp, sizeof(create_tce))) |
| 1127 | goto out; |
| 1128 | r = kvm_vm_ioctl_create_spapr_tce(kvm, &create_tce); |
| 1129 | goto out; |
| 1130 | } |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 1131 | case KVM_PPC_GET_SMMU_INFO: { |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 1132 | struct kvm_ppc_smmu_info info; |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 1133 | struct kvm *kvm = filp->private_data; |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 1134 | |
| 1135 | memset(&info, 0, sizeof(info)); |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 1136 | r = kvm->arch.kvm_ops->get_smmu_info(kvm, &info); |
Benjamin Herrenschmidt | 5b74716 | 2012-04-26 19:43:42 +0000 | [diff] [blame] | 1137 | if (r >= 0 && copy_to_user(argp, &info, sizeof(info))) |
| 1138 | r = -EFAULT; |
| 1139 | break; |
| 1140 | } |
Michael Ellerman | 8e591cb | 2013-04-17 20:30:00 +0000 | [diff] [blame] | 1141 | case KVM_PPC_RTAS_DEFINE_TOKEN: { |
| 1142 | struct kvm *kvm = filp->private_data; |
| 1143 | |
| 1144 | r = kvm_vm_ioctl_rtas_define_token(kvm, argp); |
| 1145 | break; |
| 1146 | } |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 1147 | default: { |
| 1148 | struct kvm *kvm = filp->private_data; |
| 1149 | r = kvm->arch.kvm_ops->arch_vm_ioctl(filp, ioctl, arg); |
| 1150 | } |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1151 | #else /* CONFIG_PPC_BOOK3S_64 */ |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1152 | default: |
Avi Kivity | 367e131 | 2009-08-26 14:57:07 +0300 | [diff] [blame] | 1153 | r = -ENOTTY; |
Aneesh Kumar K.V | 3a167bea | 2013-10-07 22:17:53 +0530 | [diff] [blame] | 1154 | #endif |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1155 | } |
Alexander Graf | 15711e9 | 2010-07-29 14:48:08 +0200 | [diff] [blame] | 1156 | out: |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1157 | return r; |
| 1158 | } |
| 1159 | |
Scott Wood | 043cc4d | 2011-12-20 15:34:20 +0000 | [diff] [blame] | 1160 | static unsigned long lpid_inuse[BITS_TO_LONGS(KVMPPC_NR_LPIDS)]; |
| 1161 | static unsigned long nr_lpids; |
| 1162 | |
| 1163 | long kvmppc_alloc_lpid(void) |
| 1164 | { |
| 1165 | long lpid; |
| 1166 | |
| 1167 | do { |
| 1168 | lpid = find_first_zero_bit(lpid_inuse, KVMPPC_NR_LPIDS); |
| 1169 | if (lpid >= nr_lpids) { |
| 1170 | pr_err("%s: No LPIDs free\n", __func__); |
| 1171 | return -ENOMEM; |
| 1172 | } |
| 1173 | } while (test_and_set_bit(lpid, lpid_inuse)); |
| 1174 | |
| 1175 | return lpid; |
| 1176 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 1177 | EXPORT_SYMBOL_GPL(kvmppc_alloc_lpid); |
Scott Wood | 043cc4d | 2011-12-20 15:34:20 +0000 | [diff] [blame] | 1178 | |
| 1179 | void kvmppc_claim_lpid(long lpid) |
| 1180 | { |
| 1181 | set_bit(lpid, lpid_inuse); |
| 1182 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 1183 | EXPORT_SYMBOL_GPL(kvmppc_claim_lpid); |
Scott Wood | 043cc4d | 2011-12-20 15:34:20 +0000 | [diff] [blame] | 1184 | |
| 1185 | void kvmppc_free_lpid(long lpid) |
| 1186 | { |
| 1187 | clear_bit(lpid, lpid_inuse); |
| 1188 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 1189 | EXPORT_SYMBOL_GPL(kvmppc_free_lpid); |
Scott Wood | 043cc4d | 2011-12-20 15:34:20 +0000 | [diff] [blame] | 1190 | |
| 1191 | void kvmppc_init_lpid(unsigned long nr_lpids_param) |
| 1192 | { |
| 1193 | nr_lpids = min_t(unsigned long, KVMPPC_NR_LPIDS, nr_lpids_param); |
| 1194 | memset(lpid_inuse, 0, sizeof(lpid_inuse)); |
| 1195 | } |
Aneesh Kumar K.V | 2ba9f0d | 2013-10-07 22:17:59 +0530 | [diff] [blame] | 1196 | EXPORT_SYMBOL_GPL(kvmppc_init_lpid); |
Scott Wood | 043cc4d | 2011-12-20 15:34:20 +0000 | [diff] [blame] | 1197 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1198 | int kvm_arch_init(void *opaque) |
| 1199 | { |
| 1200 | return 0; |
| 1201 | } |
| 1202 | |
| 1203 | void kvm_arch_exit(void) |
| 1204 | { |
Aneesh Kumar K.V | cbbc58d | 2013-10-07 22:18:01 +0530 | [diff] [blame] | 1205 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 1206 | } |