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> |
| 24 | #include <linux/module.h> |
| 25 | #include <linux/vmalloc.h> |
| 26 | #include <linux/fs.h> |
| 27 | #include <asm/cputable.h> |
| 28 | #include <asm/uaccess.h> |
| 29 | #include <asm/kvm_ppc.h> |
Hollis Blanchard | 83aae4a | 2008-07-25 13:54:52 -0500 | [diff] [blame] | 30 | #include <asm/tlbflush.h> |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 31 | #include "timing.h" |
Paul Mackerras | fad7b9b | 2008-12-23 14:57:26 +1100 | [diff] [blame] | 32 | #include "../mm/mmu_decl.h" |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 33 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 34 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn) |
| 35 | { |
| 36 | return gfn; |
| 37 | } |
| 38 | |
| 39 | int kvm_cpu_has_interrupt(struct kvm_vcpu *v) |
| 40 | { |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 41 | return !!(v->arch.pending_exceptions); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 42 | } |
| 43 | |
| 44 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
| 45 | { |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 46 | return !(v->arch.msr & MSR_WE); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 47 | } |
| 48 | |
| 49 | |
| 50 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
| 51 | { |
| 52 | enum emulation_result er; |
| 53 | int r; |
| 54 | |
| 55 | er = kvmppc_emulate_instruction(run, vcpu); |
| 56 | switch (er) { |
| 57 | case EMULATE_DONE: |
| 58 | /* Future optimization: only reload non-volatiles if they were |
| 59 | * actually modified. */ |
| 60 | r = RESUME_GUEST_NV; |
| 61 | break; |
| 62 | case EMULATE_DO_MMIO: |
| 63 | run->exit_reason = KVM_EXIT_MMIO; |
| 64 | /* We must reload nonvolatiles because "update" load/store |
| 65 | * instructions modify register state. */ |
| 66 | /* Future optimization: only reload non-volatiles if they were |
| 67 | * actually modified. */ |
| 68 | r = RESUME_HOST_NV; |
| 69 | break; |
| 70 | case EMULATE_FAIL: |
| 71 | /* XXX Deliver Program interrupt to guest. */ |
| 72 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, |
| 73 | vcpu->arch.last_inst); |
| 74 | r = RESUME_HOST; |
| 75 | break; |
| 76 | default: |
| 77 | BUG(); |
| 78 | } |
| 79 | |
| 80 | return r; |
| 81 | } |
| 82 | |
| 83 | void kvm_arch_hardware_enable(void *garbage) |
| 84 | { |
| 85 | } |
| 86 | |
| 87 | void kvm_arch_hardware_disable(void *garbage) |
| 88 | { |
| 89 | } |
| 90 | |
| 91 | int kvm_arch_hardware_setup(void) |
| 92 | { |
| 93 | return 0; |
| 94 | } |
| 95 | |
| 96 | void kvm_arch_hardware_unsetup(void) |
| 97 | { |
| 98 | } |
| 99 | |
| 100 | void kvm_arch_check_processor_compat(void *rtn) |
| 101 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 102 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 103 | } |
| 104 | |
| 105 | struct kvm *kvm_arch_create_vm(void) |
| 106 | { |
| 107 | struct kvm *kvm; |
| 108 | |
| 109 | kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL); |
| 110 | if (!kvm) |
| 111 | return ERR_PTR(-ENOMEM); |
| 112 | |
| 113 | return kvm; |
| 114 | } |
| 115 | |
| 116 | static void kvmppc_free_vcpus(struct kvm *kvm) |
| 117 | { |
| 118 | unsigned int i; |
| 119 | |
| 120 | for (i = 0; i < KVM_MAX_VCPUS; ++i) { |
| 121 | if (kvm->vcpus[i]) { |
| 122 | kvm_arch_vcpu_free(kvm->vcpus[i]); |
| 123 | kvm->vcpus[i] = NULL; |
| 124 | } |
| 125 | } |
| 126 | } |
| 127 | |
| 128 | void kvm_arch_destroy_vm(struct kvm *kvm) |
| 129 | { |
| 130 | kvmppc_free_vcpus(kvm); |
| 131 | kvm_free_physmem(kvm); |
| 132 | kfree(kvm); |
| 133 | } |
| 134 | |
| 135 | int kvm_dev_ioctl_check_extension(long ext) |
| 136 | { |
| 137 | int r; |
| 138 | |
| 139 | switch (ext) { |
Laurent Vivier | 588968b | 2008-05-30 16:05:56 +0200 | [diff] [blame] | 140 | case KVM_CAP_COALESCED_MMIO: |
| 141 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; |
| 142 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 143 | default: |
| 144 | r = 0; |
| 145 | break; |
| 146 | } |
| 147 | return r; |
| 148 | |
| 149 | } |
| 150 | |
| 151 | long kvm_arch_dev_ioctl(struct file *filp, |
| 152 | unsigned int ioctl, unsigned long arg) |
| 153 | { |
| 154 | return -EINVAL; |
| 155 | } |
| 156 | |
| 157 | int kvm_arch_set_memory_region(struct kvm *kvm, |
| 158 | struct kvm_userspace_memory_region *mem, |
| 159 | struct kvm_memory_slot old, |
| 160 | int user_alloc) |
| 161 | { |
| 162 | return 0; |
| 163 | } |
| 164 | |
Marcelo Tosatti | 34d4cb8 | 2008-07-10 20:49:31 -0300 | [diff] [blame] | 165 | void kvm_arch_flush_shadow(struct kvm *kvm) |
| 166 | { |
| 167 | } |
| 168 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 169 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
| 170 | { |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 171 | struct kvm_vcpu *vcpu; |
| 172 | vcpu = kvmppc_core_vcpu_create(kvm, id); |
| 173 | kvmppc_create_vcpu_debugfs(vcpu, id); |
| 174 | return vcpu; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 175 | } |
| 176 | |
| 177 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
| 178 | { |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 179 | kvmppc_remove_vcpu_debugfs(vcpu); |
Hollis Blanchard | db93f57 | 2008-11-05 09:36:18 -0600 | [diff] [blame] | 180 | kvmppc_core_vcpu_free(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 181 | } |
| 182 | |
| 183 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) |
| 184 | { |
| 185 | kvm_arch_vcpu_free(vcpu); |
| 186 | } |
| 187 | |
| 188 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
| 189 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 190 | return kvmppc_core_pending_dec(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 191 | } |
| 192 | |
| 193 | static void kvmppc_decrementer_func(unsigned long data) |
| 194 | { |
| 195 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; |
| 196 | |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 197 | kvmppc_core_queue_dec(vcpu); |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 198 | |
| 199 | if (waitqueue_active(&vcpu->wq)) { |
| 200 | wake_up_interruptible(&vcpu->wq); |
| 201 | vcpu->stat.halt_wakeup++; |
| 202 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 203 | } |
| 204 | |
| 205 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
| 206 | { |
| 207 | setup_timer(&vcpu->arch.dec_timer, kvmppc_decrementer_func, |
| 208 | (unsigned long)vcpu); |
| 209 | |
| 210 | return 0; |
| 211 | } |
| 212 | |
| 213 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) |
| 214 | { |
Hollis Blanchard | c30f8a6 | 2008-11-24 11:37:38 -0600 | [diff] [blame] | 215 | kvmppc_core_destroy_mmu(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 216 | } |
| 217 | |
| 218 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
| 219 | { |
Hollis Blanchard | 6a0ab73 | 2008-07-25 13:54:49 -0500 | [diff] [blame] | 220 | if (vcpu->guest_debug.enabled) |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 221 | kvmppc_core_load_guest_debugstate(vcpu); |
Hollis Blanchard | 83aae4a | 2008-07-25 13:54:52 -0500 | [diff] [blame] | 222 | |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 223 | kvmppc_core_vcpu_load(vcpu, cpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 224 | } |
| 225 | |
| 226 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) |
| 227 | { |
Hollis Blanchard | 6a0ab73 | 2008-07-25 13:54:49 -0500 | [diff] [blame] | 228 | if (vcpu->guest_debug.enabled) |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 229 | kvmppc_core_load_host_debugstate(vcpu); |
Hollis Blanchard | 83aae4a | 2008-07-25 13:54:52 -0500 | [diff] [blame] | 230 | |
| 231 | /* Don't leave guest TLB entries resident when being de-scheduled. */ |
| 232 | /* XXX It would be nice to differentiate between heavyweight exit and |
| 233 | * sched_out here, since we could avoid the TLB flush for heavyweight |
| 234 | * exits. */ |
Benjamin Herrenschmidt | 2a4aca11 | 2008-12-18 19:13:42 +0000 | [diff] [blame] | 235 | _tlbil_all(); |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 236 | kvmppc_core_vcpu_put(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 237 | } |
| 238 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 239 | int kvm_arch_vcpu_ioctl_debug_guest(struct kvm_vcpu *vcpu, |
| 240 | struct kvm_debug_guest *dbg) |
| 241 | { |
Hollis Blanchard | 6a0ab73 | 2008-07-25 13:54:49 -0500 | [diff] [blame] | 242 | int i; |
| 243 | |
| 244 | vcpu->guest_debug.enabled = dbg->enabled; |
| 245 | if (vcpu->guest_debug.enabled) { |
| 246 | for (i=0; i < ARRAY_SIZE(vcpu->guest_debug.bp); i++) { |
| 247 | if (dbg->breakpoints[i].enabled) |
| 248 | vcpu->guest_debug.bp[i] = dbg->breakpoints[i].address; |
| 249 | else |
| 250 | vcpu->guest_debug.bp[i] = 0; |
| 251 | } |
| 252 | } |
| 253 | |
| 254 | return 0; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 255 | } |
| 256 | |
| 257 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
| 258 | struct kvm_run *run) |
| 259 | { |
Hollis Blanchard | 5cf8ca2 | 2008-11-05 09:36:19 -0600 | [diff] [blame] | 260 | ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr]; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 261 | *gpr = run->dcr.data; |
| 262 | } |
| 263 | |
| 264 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, |
| 265 | struct kvm_run *run) |
| 266 | { |
Hollis Blanchard | 5cf8ca2 | 2008-11-05 09:36:19 -0600 | [diff] [blame] | 267 | ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr]; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 268 | |
| 269 | if (run->mmio.len > sizeof(*gpr)) { |
| 270 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
| 271 | return; |
| 272 | } |
| 273 | |
| 274 | if (vcpu->arch.mmio_is_bigendian) { |
| 275 | switch (run->mmio.len) { |
| 276 | case 4: *gpr = *(u32 *)run->mmio.data; break; |
| 277 | case 2: *gpr = *(u16 *)run->mmio.data; break; |
| 278 | case 1: *gpr = *(u8 *)run->mmio.data; break; |
| 279 | } |
| 280 | } else { |
| 281 | /* Convert BE data from userland back to LE. */ |
| 282 | switch (run->mmio.len) { |
| 283 | case 4: *gpr = ld_le32((u32 *)run->mmio.data); break; |
| 284 | case 2: *gpr = ld_le16((u16 *)run->mmio.data); break; |
| 285 | case 1: *gpr = *(u8 *)run->mmio.data; break; |
| 286 | } |
| 287 | } |
| 288 | } |
| 289 | |
| 290 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 291 | unsigned int rt, unsigned int bytes, int is_bigendian) |
| 292 | { |
| 293 | if (bytes > sizeof(run->mmio.data)) { |
| 294 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, |
| 295 | run->mmio.len); |
| 296 | } |
| 297 | |
| 298 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; |
| 299 | run->mmio.len = bytes; |
| 300 | run->mmio.is_write = 0; |
| 301 | |
| 302 | vcpu->arch.io_gpr = rt; |
| 303 | vcpu->arch.mmio_is_bigendian = is_bigendian; |
| 304 | vcpu->mmio_needed = 1; |
| 305 | vcpu->mmio_is_write = 0; |
| 306 | |
| 307 | return EMULATE_DO_MMIO; |
| 308 | } |
| 309 | |
| 310 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 311 | u32 val, unsigned int bytes, int is_bigendian) |
| 312 | { |
| 313 | void *data = run->mmio.data; |
| 314 | |
| 315 | if (bytes > sizeof(run->mmio.data)) { |
| 316 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, |
| 317 | run->mmio.len); |
| 318 | } |
| 319 | |
| 320 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; |
| 321 | run->mmio.len = bytes; |
| 322 | run->mmio.is_write = 1; |
| 323 | vcpu->mmio_needed = 1; |
| 324 | vcpu->mmio_is_write = 1; |
| 325 | |
| 326 | /* Store the value at the lowest bytes in 'data'. */ |
| 327 | if (is_bigendian) { |
| 328 | switch (bytes) { |
| 329 | case 4: *(u32 *)data = val; break; |
| 330 | case 2: *(u16 *)data = val; break; |
| 331 | case 1: *(u8 *)data = val; break; |
| 332 | } |
| 333 | } else { |
| 334 | /* Store LE value into 'data'. */ |
| 335 | switch (bytes) { |
| 336 | case 4: st_le32(data, val); break; |
| 337 | case 2: st_le16(data, val); break; |
| 338 | case 1: *(u8 *)data = val; break; |
| 339 | } |
| 340 | } |
| 341 | |
| 342 | return EMULATE_DO_MMIO; |
| 343 | } |
| 344 | |
| 345 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) |
| 346 | { |
| 347 | int r; |
| 348 | sigset_t sigsaved; |
| 349 | |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 350 | vcpu_load(vcpu); |
| 351 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 352 | if (vcpu->sigset_active) |
| 353 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); |
| 354 | |
| 355 | if (vcpu->mmio_needed) { |
| 356 | if (!vcpu->mmio_is_write) |
| 357 | kvmppc_complete_mmio_load(vcpu, run); |
| 358 | vcpu->mmio_needed = 0; |
| 359 | } else if (vcpu->arch.dcr_needed) { |
| 360 | if (!vcpu->arch.dcr_is_write) |
| 361 | kvmppc_complete_dcr_load(vcpu, run); |
| 362 | vcpu->arch.dcr_needed = 0; |
| 363 | } |
| 364 | |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 365 | kvmppc_core_deliver_interrupts(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 366 | |
| 367 | local_irq_disable(); |
| 368 | kvm_guest_enter(); |
| 369 | r = __kvmppc_vcpu_run(run, vcpu); |
| 370 | kvm_guest_exit(); |
| 371 | local_irq_enable(); |
| 372 | |
| 373 | if (vcpu->sigset_active) |
| 374 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); |
| 375 | |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 376 | vcpu_put(vcpu); |
| 377 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 378 | return r; |
| 379 | } |
| 380 | |
| 381 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) |
| 382 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 383 | kvmppc_core_queue_external(vcpu, irq); |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 384 | |
| 385 | if (waitqueue_active(&vcpu->wq)) { |
| 386 | wake_up_interruptible(&vcpu->wq); |
| 387 | vcpu->stat.halt_wakeup++; |
| 388 | } |
| 389 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 390 | return 0; |
| 391 | } |
| 392 | |
| 393 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
| 394 | struct kvm_mp_state *mp_state) |
| 395 | { |
| 396 | return -EINVAL; |
| 397 | } |
| 398 | |
| 399 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, |
| 400 | struct kvm_mp_state *mp_state) |
| 401 | { |
| 402 | return -EINVAL; |
| 403 | } |
| 404 | |
| 405 | long kvm_arch_vcpu_ioctl(struct file *filp, |
| 406 | unsigned int ioctl, unsigned long arg) |
| 407 | { |
| 408 | struct kvm_vcpu *vcpu = filp->private_data; |
| 409 | void __user *argp = (void __user *)arg; |
| 410 | long r; |
| 411 | |
| 412 | switch (ioctl) { |
| 413 | case KVM_INTERRUPT: { |
| 414 | struct kvm_interrupt irq; |
| 415 | r = -EFAULT; |
| 416 | if (copy_from_user(&irq, argp, sizeof(irq))) |
| 417 | goto out; |
| 418 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
| 419 | break; |
| 420 | } |
| 421 | default: |
| 422 | r = -EINVAL; |
| 423 | } |
| 424 | |
| 425 | out: |
| 426 | return r; |
| 427 | } |
| 428 | |
| 429 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) |
| 430 | { |
| 431 | return -ENOTSUPP; |
| 432 | } |
| 433 | |
| 434 | long kvm_arch_vm_ioctl(struct file *filp, |
| 435 | unsigned int ioctl, unsigned long arg) |
| 436 | { |
| 437 | long r; |
| 438 | |
| 439 | switch (ioctl) { |
| 440 | default: |
| 441 | r = -EINVAL; |
| 442 | } |
| 443 | |
| 444 | return r; |
| 445 | } |
| 446 | |
| 447 | int kvm_arch_init(void *opaque) |
| 448 | { |
| 449 | return 0; |
| 450 | } |
| 451 | |
| 452 | void kvm_arch_exit(void) |
| 453 | { |
| 454 | } |