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 | |
Marcelo Tosatti | 46f43c6 | 2009-06-18 11:47:27 -0300 | [diff] [blame^] | 34 | #define CREATE_TRACE_POINTS |
| 35 | #include "trace.h" |
| 36 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 37 | gfn_t unalias_gfn(struct kvm *kvm, gfn_t gfn) |
| 38 | { |
| 39 | return gfn; |
| 40 | } |
| 41 | |
| 42 | int kvm_cpu_has_interrupt(struct kvm_vcpu *v) |
| 43 | { |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 44 | return !!(v->arch.pending_exceptions); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 45 | } |
| 46 | |
Gleb Natapov | 7864612 | 2009-03-23 12:12:11 +0200 | [diff] [blame] | 47 | int kvm_arch_interrupt_allowed(struct kvm_vcpu *vcpu) |
| 48 | { |
| 49 | /* do real check here */ |
| 50 | return 1; |
| 51 | } |
| 52 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 53 | int kvm_arch_vcpu_runnable(struct kvm_vcpu *v) |
| 54 | { |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 55 | return !(v->arch.msr & MSR_WE); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | |
| 59 | int kvmppc_emulate_mmio(struct kvm_run *run, struct kvm_vcpu *vcpu) |
| 60 | { |
| 61 | enum emulation_result er; |
| 62 | int r; |
| 63 | |
| 64 | er = kvmppc_emulate_instruction(run, vcpu); |
| 65 | switch (er) { |
| 66 | case EMULATE_DONE: |
| 67 | /* Future optimization: only reload non-volatiles if they were |
| 68 | * actually modified. */ |
| 69 | r = RESUME_GUEST_NV; |
| 70 | break; |
| 71 | case EMULATE_DO_MMIO: |
| 72 | run->exit_reason = KVM_EXIT_MMIO; |
| 73 | /* We must reload nonvolatiles because "update" load/store |
| 74 | * instructions modify register state. */ |
| 75 | /* Future optimization: only reload non-volatiles if they were |
| 76 | * actually modified. */ |
| 77 | r = RESUME_HOST_NV; |
| 78 | break; |
| 79 | case EMULATE_FAIL: |
| 80 | /* XXX Deliver Program interrupt to guest. */ |
| 81 | printk(KERN_EMERG "%s: emulation failed (%08x)\n", __func__, |
| 82 | vcpu->arch.last_inst); |
| 83 | r = RESUME_HOST; |
| 84 | break; |
| 85 | default: |
| 86 | BUG(); |
| 87 | } |
| 88 | |
| 89 | return r; |
| 90 | } |
| 91 | |
| 92 | void kvm_arch_hardware_enable(void *garbage) |
| 93 | { |
| 94 | } |
| 95 | |
| 96 | void kvm_arch_hardware_disable(void *garbage) |
| 97 | { |
| 98 | } |
| 99 | |
| 100 | int kvm_arch_hardware_setup(void) |
| 101 | { |
| 102 | return 0; |
| 103 | } |
| 104 | |
| 105 | void kvm_arch_hardware_unsetup(void) |
| 106 | { |
| 107 | } |
| 108 | |
| 109 | void kvm_arch_check_processor_compat(void *rtn) |
| 110 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 111 | *(int *)rtn = kvmppc_core_check_processor_compat(); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 112 | } |
| 113 | |
| 114 | struct kvm *kvm_arch_create_vm(void) |
| 115 | { |
| 116 | struct kvm *kvm; |
| 117 | |
| 118 | kvm = kzalloc(sizeof(struct kvm), GFP_KERNEL); |
| 119 | if (!kvm) |
| 120 | return ERR_PTR(-ENOMEM); |
| 121 | |
| 122 | return kvm; |
| 123 | } |
| 124 | |
| 125 | static void kvmppc_free_vcpus(struct kvm *kvm) |
| 126 | { |
| 127 | unsigned int i; |
Gleb Natapov | 988a2ca | 2009-06-09 15:56:29 +0300 | [diff] [blame] | 128 | struct kvm_vcpu *vcpu; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 129 | |
Gleb Natapov | 988a2ca | 2009-06-09 15:56:29 +0300 | [diff] [blame] | 130 | kvm_for_each_vcpu(i, vcpu, kvm) |
| 131 | kvm_arch_vcpu_free(vcpu); |
| 132 | |
| 133 | mutex_lock(&kvm->lock); |
| 134 | for (i = 0; i < atomic_read(&kvm->online_vcpus); i++) |
| 135 | kvm->vcpus[i] = NULL; |
| 136 | |
| 137 | atomic_set(&kvm->online_vcpus, 0); |
| 138 | mutex_unlock(&kvm->lock); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 139 | } |
| 140 | |
Sheng Yang | ad8ba2c | 2009-01-06 10:03:02 +0800 | [diff] [blame] | 141 | void kvm_arch_sync_events(struct kvm *kvm) |
| 142 | { |
| 143 | } |
| 144 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 145 | void kvm_arch_destroy_vm(struct kvm *kvm) |
| 146 | { |
| 147 | kvmppc_free_vcpus(kvm); |
| 148 | kvm_free_physmem(kvm); |
| 149 | kfree(kvm); |
| 150 | } |
| 151 | |
| 152 | int kvm_dev_ioctl_check_extension(long ext) |
| 153 | { |
| 154 | int r; |
| 155 | |
| 156 | switch (ext) { |
Laurent Vivier | 588968b | 2008-05-30 16:05:56 +0200 | [diff] [blame] | 157 | case KVM_CAP_COALESCED_MMIO: |
| 158 | r = KVM_COALESCED_MMIO_PAGE_OFFSET; |
| 159 | break; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 160 | default: |
| 161 | r = 0; |
| 162 | break; |
| 163 | } |
| 164 | return r; |
| 165 | |
| 166 | } |
| 167 | |
| 168 | long kvm_arch_dev_ioctl(struct file *filp, |
| 169 | unsigned int ioctl, unsigned long arg) |
| 170 | { |
| 171 | return -EINVAL; |
| 172 | } |
| 173 | |
| 174 | int kvm_arch_set_memory_region(struct kvm *kvm, |
| 175 | struct kvm_userspace_memory_region *mem, |
| 176 | struct kvm_memory_slot old, |
| 177 | int user_alloc) |
| 178 | { |
| 179 | return 0; |
| 180 | } |
| 181 | |
Marcelo Tosatti | 34d4cb8 | 2008-07-10 20:49:31 -0300 | [diff] [blame] | 182 | void kvm_arch_flush_shadow(struct kvm *kvm) |
| 183 | { |
| 184 | } |
| 185 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 186 | struct kvm_vcpu *kvm_arch_vcpu_create(struct kvm *kvm, unsigned int id) |
| 187 | { |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 188 | struct kvm_vcpu *vcpu; |
| 189 | vcpu = kvmppc_core_vcpu_create(kvm, id); |
| 190 | kvmppc_create_vcpu_debugfs(vcpu, id); |
| 191 | return vcpu; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 192 | } |
| 193 | |
| 194 | void kvm_arch_vcpu_free(struct kvm_vcpu *vcpu) |
| 195 | { |
Hollis Blanchard | 73e75b4 | 2008-12-02 15:51:57 -0600 | [diff] [blame] | 196 | kvmppc_remove_vcpu_debugfs(vcpu); |
Hollis Blanchard | db93f57 | 2008-11-05 09:36:18 -0600 | [diff] [blame] | 197 | kvmppc_core_vcpu_free(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 198 | } |
| 199 | |
| 200 | void kvm_arch_vcpu_destroy(struct kvm_vcpu *vcpu) |
| 201 | { |
| 202 | kvm_arch_vcpu_free(vcpu); |
| 203 | } |
| 204 | |
| 205 | int kvm_cpu_has_pending_timer(struct kvm_vcpu *vcpu) |
| 206 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 207 | return kvmppc_core_pending_dec(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 208 | } |
| 209 | |
| 210 | static void kvmppc_decrementer_func(unsigned long data) |
| 211 | { |
| 212 | struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data; |
| 213 | |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 214 | kvmppc_core_queue_dec(vcpu); |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 215 | |
| 216 | if (waitqueue_active(&vcpu->wq)) { |
| 217 | wake_up_interruptible(&vcpu->wq); |
| 218 | vcpu->stat.halt_wakeup++; |
| 219 | } |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 220 | } |
| 221 | |
| 222 | int kvm_arch_vcpu_init(struct kvm_vcpu *vcpu) |
| 223 | { |
| 224 | setup_timer(&vcpu->arch.dec_timer, kvmppc_decrementer_func, |
| 225 | (unsigned long)vcpu); |
| 226 | |
| 227 | return 0; |
| 228 | } |
| 229 | |
| 230 | void kvm_arch_vcpu_uninit(struct kvm_vcpu *vcpu) |
| 231 | { |
Hollis Blanchard | ecc0981 | 2009-01-03 16:22:59 -0600 | [diff] [blame] | 232 | kvmppc_mmu_destroy(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 233 | } |
| 234 | |
| 235 | void kvm_arch_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
| 236 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 237 | kvmppc_core_vcpu_load(vcpu, cpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 238 | } |
| 239 | |
| 240 | void kvm_arch_vcpu_put(struct kvm_vcpu *vcpu) |
| 241 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 242 | kvmppc_core_vcpu_put(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 243 | } |
| 244 | |
Jan Kiszka | d0bfb94 | 2008-12-15 13:52:10 +0100 | [diff] [blame] | 245 | int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu, |
Hollis Blanchard | f5d0906 | 2009-01-04 13:51:09 -0600 | [diff] [blame] | 246 | struct kvm_guest_debug *dbg) |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 247 | { |
Hollis Blanchard | f5d0906 | 2009-01-04 13:51:09 -0600 | [diff] [blame] | 248 | return -EINVAL; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 249 | } |
| 250 | |
| 251 | static void kvmppc_complete_dcr_load(struct kvm_vcpu *vcpu, |
| 252 | struct kvm_run *run) |
| 253 | { |
Hollis Blanchard | 5cf8ca2 | 2008-11-05 09:36:19 -0600 | [diff] [blame] | 254 | ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr]; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 255 | *gpr = run->dcr.data; |
| 256 | } |
| 257 | |
| 258 | static void kvmppc_complete_mmio_load(struct kvm_vcpu *vcpu, |
| 259 | struct kvm_run *run) |
| 260 | { |
Hollis Blanchard | 5cf8ca2 | 2008-11-05 09:36:19 -0600 | [diff] [blame] | 261 | ulong *gpr = &vcpu->arch.gpr[vcpu->arch.io_gpr]; |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 262 | |
| 263 | if (run->mmio.len > sizeof(*gpr)) { |
| 264 | printk(KERN_ERR "bad MMIO length: %d\n", run->mmio.len); |
| 265 | return; |
| 266 | } |
| 267 | |
| 268 | if (vcpu->arch.mmio_is_bigendian) { |
| 269 | switch (run->mmio.len) { |
| 270 | case 4: *gpr = *(u32 *)run->mmio.data; break; |
| 271 | case 2: *gpr = *(u16 *)run->mmio.data; break; |
| 272 | case 1: *gpr = *(u8 *)run->mmio.data; break; |
| 273 | } |
| 274 | } else { |
| 275 | /* Convert BE data from userland back to LE. */ |
| 276 | switch (run->mmio.len) { |
| 277 | case 4: *gpr = ld_le32((u32 *)run->mmio.data); break; |
| 278 | case 2: *gpr = ld_le16((u16 *)run->mmio.data); break; |
| 279 | case 1: *gpr = *(u8 *)run->mmio.data; break; |
| 280 | } |
| 281 | } |
| 282 | } |
| 283 | |
| 284 | int kvmppc_handle_load(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 285 | unsigned int rt, unsigned int bytes, int is_bigendian) |
| 286 | { |
| 287 | if (bytes > sizeof(run->mmio.data)) { |
| 288 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, |
| 289 | run->mmio.len); |
| 290 | } |
| 291 | |
| 292 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; |
| 293 | run->mmio.len = bytes; |
| 294 | run->mmio.is_write = 0; |
| 295 | |
| 296 | vcpu->arch.io_gpr = rt; |
| 297 | vcpu->arch.mmio_is_bigendian = is_bigendian; |
| 298 | vcpu->mmio_needed = 1; |
| 299 | vcpu->mmio_is_write = 0; |
| 300 | |
| 301 | return EMULATE_DO_MMIO; |
| 302 | } |
| 303 | |
| 304 | int kvmppc_handle_store(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 305 | u32 val, unsigned int bytes, int is_bigendian) |
| 306 | { |
| 307 | void *data = run->mmio.data; |
| 308 | |
| 309 | if (bytes > sizeof(run->mmio.data)) { |
| 310 | printk(KERN_ERR "%s: bad MMIO length: %d\n", __func__, |
| 311 | run->mmio.len); |
| 312 | } |
| 313 | |
| 314 | run->mmio.phys_addr = vcpu->arch.paddr_accessed; |
| 315 | run->mmio.len = bytes; |
| 316 | run->mmio.is_write = 1; |
| 317 | vcpu->mmio_needed = 1; |
| 318 | vcpu->mmio_is_write = 1; |
| 319 | |
| 320 | /* Store the value at the lowest bytes in 'data'. */ |
| 321 | if (is_bigendian) { |
| 322 | switch (bytes) { |
| 323 | case 4: *(u32 *)data = val; break; |
| 324 | case 2: *(u16 *)data = val; break; |
| 325 | case 1: *(u8 *)data = val; break; |
| 326 | } |
| 327 | } else { |
| 328 | /* Store LE value into 'data'. */ |
| 329 | switch (bytes) { |
| 330 | case 4: st_le32(data, val); break; |
| 331 | case 2: st_le16(data, val); break; |
| 332 | case 1: *(u8 *)data = val; break; |
| 333 | } |
| 334 | } |
| 335 | |
| 336 | return EMULATE_DO_MMIO; |
| 337 | } |
| 338 | |
| 339 | int kvm_arch_vcpu_ioctl_run(struct kvm_vcpu *vcpu, struct kvm_run *run) |
| 340 | { |
| 341 | int r; |
| 342 | sigset_t sigsaved; |
| 343 | |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 344 | vcpu_load(vcpu); |
| 345 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 346 | if (vcpu->sigset_active) |
| 347 | sigprocmask(SIG_SETMASK, &vcpu->sigset, &sigsaved); |
| 348 | |
| 349 | if (vcpu->mmio_needed) { |
| 350 | if (!vcpu->mmio_is_write) |
| 351 | kvmppc_complete_mmio_load(vcpu, run); |
| 352 | vcpu->mmio_needed = 0; |
| 353 | } else if (vcpu->arch.dcr_needed) { |
| 354 | if (!vcpu->arch.dcr_is_write) |
| 355 | kvmppc_complete_dcr_load(vcpu, run); |
| 356 | vcpu->arch.dcr_needed = 0; |
| 357 | } |
| 358 | |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 359 | kvmppc_core_deliver_interrupts(vcpu); |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 360 | |
| 361 | local_irq_disable(); |
| 362 | kvm_guest_enter(); |
| 363 | r = __kvmppc_vcpu_run(run, vcpu); |
| 364 | kvm_guest_exit(); |
| 365 | local_irq_enable(); |
| 366 | |
| 367 | if (vcpu->sigset_active) |
| 368 | sigprocmask(SIG_SETMASK, &sigsaved, NULL); |
| 369 | |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 370 | vcpu_put(vcpu); |
| 371 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 372 | return r; |
| 373 | } |
| 374 | |
| 375 | int kvm_vcpu_ioctl_interrupt(struct kvm_vcpu *vcpu, struct kvm_interrupt *irq) |
| 376 | { |
Hollis Blanchard | 9dd921c | 2008-11-05 09:36:14 -0600 | [diff] [blame] | 377 | kvmppc_core_queue_external(vcpu, irq); |
Hollis Blanchard | 45c5eb6 | 2008-04-25 17:55:49 -0500 | [diff] [blame] | 378 | |
| 379 | if (waitqueue_active(&vcpu->wq)) { |
| 380 | wake_up_interruptible(&vcpu->wq); |
| 381 | vcpu->stat.halt_wakeup++; |
| 382 | } |
| 383 | |
Hollis Blanchard | bbf45ba | 2008-04-16 23:28:09 -0500 | [diff] [blame] | 384 | return 0; |
| 385 | } |
| 386 | |
| 387 | int kvm_arch_vcpu_ioctl_get_mpstate(struct kvm_vcpu *vcpu, |
| 388 | struct kvm_mp_state *mp_state) |
| 389 | { |
| 390 | return -EINVAL; |
| 391 | } |
| 392 | |
| 393 | int kvm_arch_vcpu_ioctl_set_mpstate(struct kvm_vcpu *vcpu, |
| 394 | struct kvm_mp_state *mp_state) |
| 395 | { |
| 396 | return -EINVAL; |
| 397 | } |
| 398 | |
| 399 | long kvm_arch_vcpu_ioctl(struct file *filp, |
| 400 | unsigned int ioctl, unsigned long arg) |
| 401 | { |
| 402 | struct kvm_vcpu *vcpu = filp->private_data; |
| 403 | void __user *argp = (void __user *)arg; |
| 404 | long r; |
| 405 | |
| 406 | switch (ioctl) { |
| 407 | case KVM_INTERRUPT: { |
| 408 | struct kvm_interrupt irq; |
| 409 | r = -EFAULT; |
| 410 | if (copy_from_user(&irq, argp, sizeof(irq))) |
| 411 | goto out; |
| 412 | r = kvm_vcpu_ioctl_interrupt(vcpu, &irq); |
| 413 | break; |
| 414 | } |
| 415 | default: |
| 416 | r = -EINVAL; |
| 417 | } |
| 418 | |
| 419 | out: |
| 420 | return r; |
| 421 | } |
| 422 | |
| 423 | int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log) |
| 424 | { |
| 425 | return -ENOTSUPP; |
| 426 | } |
| 427 | |
| 428 | long kvm_arch_vm_ioctl(struct file *filp, |
| 429 | unsigned int ioctl, unsigned long arg) |
| 430 | { |
| 431 | long r; |
| 432 | |
| 433 | switch (ioctl) { |
| 434 | default: |
| 435 | r = -EINVAL; |
| 436 | } |
| 437 | |
| 438 | return r; |
| 439 | } |
| 440 | |
| 441 | int kvm_arch_init(void *opaque) |
| 442 | { |
| 443 | return 0; |
| 444 | } |
| 445 | |
| 446 | void kvm_arch_exit(void) |
| 447 | { |
| 448 | } |