Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 1 | /* |
| 2 | * Copyright 2011 Paul Mackerras, IBM Corp. <paulus@au1.ibm.com> |
| 3 | * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved. |
| 4 | * |
| 5 | * Authors: |
| 6 | * Paul Mackerras <paulus@au1.ibm.com> |
| 7 | * Alexander Graf <agraf@suse.de> |
| 8 | * Kevin Wolf <mail@kevin-wolf.de> |
| 9 | * |
| 10 | * Description: KVM functions specific to running on Book 3S |
| 11 | * processors in hypervisor mode (specifically POWER7 and later). |
| 12 | * |
| 13 | * This file is derived from arch/powerpc/kvm/book3s.c, |
| 14 | * by Alexander Graf <agraf@suse.de>. |
| 15 | * |
| 16 | * This program is free software; you can redistribute it and/or modify |
| 17 | * it under the terms of the GNU General Public License, version 2, as |
| 18 | * published by the Free Software Foundation. |
| 19 | */ |
| 20 | |
| 21 | #include <linux/kvm_host.h> |
| 22 | #include <linux/err.h> |
| 23 | #include <linux/slab.h> |
| 24 | #include <linux/preempt.h> |
| 25 | #include <linux/sched.h> |
| 26 | #include <linux/delay.h> |
| 27 | #include <linux/fs.h> |
| 28 | #include <linux/anon_inodes.h> |
| 29 | #include <linux/cpumask.h> |
| 30 | |
| 31 | #include <asm/reg.h> |
| 32 | #include <asm/cputable.h> |
| 33 | #include <asm/cacheflush.h> |
| 34 | #include <asm/tlbflush.h> |
| 35 | #include <asm/uaccess.h> |
| 36 | #include <asm/io.h> |
| 37 | #include <asm/kvm_ppc.h> |
| 38 | #include <asm/kvm_book3s.h> |
| 39 | #include <asm/mmu_context.h> |
| 40 | #include <asm/lppaca.h> |
| 41 | #include <asm/processor.h> |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 42 | #include <asm/cputhreads.h> |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 43 | #include <linux/gfp.h> |
| 44 | #include <linux/sched.h> |
| 45 | #include <linux/vmalloc.h> |
| 46 | #include <linux/highmem.h> |
| 47 | |
| 48 | /* #define EXIT_DEBUG */ |
| 49 | /* #define EXIT_DEBUG_SIMPLE */ |
| 50 | /* #define EXIT_DEBUG_INT */ |
| 51 | |
| 52 | void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu) |
| 53 | { |
| 54 | local_paca->kvm_hstate.kvm_vcpu = vcpu; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 55 | local_paca->kvm_hstate.kvm_vcore = vcpu->arch.vcore; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 56 | } |
| 57 | |
| 58 | void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu) |
| 59 | { |
| 60 | } |
| 61 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 62 | static void kvmppc_vcpu_blocked(struct kvm_vcpu *vcpu); |
| 63 | static void kvmppc_vcpu_unblocked(struct kvm_vcpu *vcpu); |
| 64 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 65 | void kvmppc_vcpu_block(struct kvm_vcpu *vcpu) |
| 66 | { |
| 67 | u64 now; |
| 68 | unsigned long dec_nsec; |
| 69 | |
| 70 | now = get_tb(); |
| 71 | if (now >= vcpu->arch.dec_expires && !kvmppc_core_pending_dec(vcpu)) |
| 72 | kvmppc_core_queue_dec(vcpu); |
| 73 | if (vcpu->arch.pending_exceptions) |
| 74 | return; |
| 75 | if (vcpu->arch.dec_expires != ~(u64)0) { |
| 76 | dec_nsec = (vcpu->arch.dec_expires - now) * NSEC_PER_SEC / |
| 77 | tb_ticks_per_sec; |
| 78 | hrtimer_start(&vcpu->arch.dec_timer, ktime_set(0, dec_nsec), |
| 79 | HRTIMER_MODE_REL); |
| 80 | } |
| 81 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 82 | kvmppc_vcpu_blocked(vcpu); |
| 83 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 84 | kvm_vcpu_block(vcpu); |
| 85 | vcpu->stat.halt_wakeup++; |
| 86 | |
| 87 | if (vcpu->arch.dec_expires != ~(u64)0) |
| 88 | hrtimer_try_to_cancel(&vcpu->arch.dec_timer); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 89 | |
| 90 | kvmppc_vcpu_unblocked(vcpu); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 91 | } |
| 92 | |
| 93 | void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr) |
| 94 | { |
| 95 | vcpu->arch.shregs.msr = msr; |
| 96 | } |
| 97 | |
| 98 | void kvmppc_set_pvr(struct kvm_vcpu *vcpu, u32 pvr) |
| 99 | { |
| 100 | vcpu->arch.pvr = pvr; |
| 101 | } |
| 102 | |
| 103 | void kvmppc_dump_regs(struct kvm_vcpu *vcpu) |
| 104 | { |
| 105 | int r; |
| 106 | |
| 107 | pr_err("vcpu %p (%d):\n", vcpu, vcpu->vcpu_id); |
| 108 | pr_err("pc = %.16lx msr = %.16llx trap = %x\n", |
| 109 | vcpu->arch.pc, vcpu->arch.shregs.msr, vcpu->arch.trap); |
| 110 | for (r = 0; r < 16; ++r) |
| 111 | pr_err("r%2d = %.16lx r%d = %.16lx\n", |
| 112 | r, kvmppc_get_gpr(vcpu, r), |
| 113 | r+16, kvmppc_get_gpr(vcpu, r+16)); |
| 114 | pr_err("ctr = %.16lx lr = %.16lx\n", |
| 115 | vcpu->arch.ctr, vcpu->arch.lr); |
| 116 | pr_err("srr0 = %.16llx srr1 = %.16llx\n", |
| 117 | vcpu->arch.shregs.srr0, vcpu->arch.shregs.srr1); |
| 118 | pr_err("sprg0 = %.16llx sprg1 = %.16llx\n", |
| 119 | vcpu->arch.shregs.sprg0, vcpu->arch.shregs.sprg1); |
| 120 | pr_err("sprg2 = %.16llx sprg3 = %.16llx\n", |
| 121 | vcpu->arch.shregs.sprg2, vcpu->arch.shregs.sprg3); |
| 122 | pr_err("cr = %.8x xer = %.16lx dsisr = %.8x\n", |
| 123 | vcpu->arch.cr, vcpu->arch.xer, vcpu->arch.shregs.dsisr); |
| 124 | pr_err("dar = %.16llx\n", vcpu->arch.shregs.dar); |
| 125 | pr_err("fault dar = %.16lx dsisr = %.8x\n", |
| 126 | vcpu->arch.fault_dar, vcpu->arch.fault_dsisr); |
| 127 | pr_err("SLB (%d entries):\n", vcpu->arch.slb_max); |
| 128 | for (r = 0; r < vcpu->arch.slb_max; ++r) |
| 129 | pr_err(" ESID = %.16llx VSID = %.16llx\n", |
| 130 | vcpu->arch.slb[r].orige, vcpu->arch.slb[r].origv); |
| 131 | pr_err("lpcr = %.16lx sdr1 = %.16lx last_inst = %.8x\n", |
| 132 | vcpu->arch.lpcr, vcpu->kvm->arch.sdr1, |
| 133 | vcpu->arch.last_inst); |
| 134 | } |
| 135 | |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 136 | struct kvm_vcpu *kvmppc_find_vcpu(struct kvm *kvm, int id) |
| 137 | { |
| 138 | int r; |
| 139 | struct kvm_vcpu *v, *ret = NULL; |
| 140 | |
| 141 | mutex_lock(&kvm->lock); |
| 142 | kvm_for_each_vcpu(r, v, kvm) { |
| 143 | if (v->vcpu_id == id) { |
| 144 | ret = v; |
| 145 | break; |
| 146 | } |
| 147 | } |
| 148 | mutex_unlock(&kvm->lock); |
| 149 | return ret; |
| 150 | } |
| 151 | |
| 152 | static void init_vpa(struct kvm_vcpu *vcpu, struct lppaca *vpa) |
| 153 | { |
| 154 | vpa->shared_proc = 1; |
| 155 | vpa->yield_count = 1; |
| 156 | } |
| 157 | |
| 158 | static unsigned long do_h_register_vpa(struct kvm_vcpu *vcpu, |
| 159 | unsigned long flags, |
| 160 | unsigned long vcpuid, unsigned long vpa) |
| 161 | { |
| 162 | struct kvm *kvm = vcpu->kvm; |
| 163 | unsigned long pg_index, ra, len; |
| 164 | unsigned long pg_offset; |
| 165 | void *va; |
| 166 | struct kvm_vcpu *tvcpu; |
| 167 | |
| 168 | tvcpu = kvmppc_find_vcpu(kvm, vcpuid); |
| 169 | if (!tvcpu) |
| 170 | return H_PARAMETER; |
| 171 | |
| 172 | flags >>= 63 - 18; |
| 173 | flags &= 7; |
| 174 | if (flags == 0 || flags == 4) |
| 175 | return H_PARAMETER; |
| 176 | if (flags < 4) { |
| 177 | if (vpa & 0x7f) |
| 178 | return H_PARAMETER; |
| 179 | /* registering new area; convert logical addr to real */ |
| 180 | pg_index = vpa >> kvm->arch.ram_porder; |
| 181 | pg_offset = vpa & (kvm->arch.ram_psize - 1); |
| 182 | if (pg_index >= kvm->arch.ram_npages) |
| 183 | return H_PARAMETER; |
| 184 | if (kvm->arch.ram_pginfo[pg_index].pfn == 0) |
| 185 | return H_PARAMETER; |
| 186 | ra = kvm->arch.ram_pginfo[pg_index].pfn << PAGE_SHIFT; |
| 187 | ra |= pg_offset; |
| 188 | va = __va(ra); |
| 189 | if (flags <= 1) |
| 190 | len = *(unsigned short *)(va + 4); |
| 191 | else |
| 192 | len = *(unsigned int *)(va + 4); |
| 193 | if (pg_offset + len > kvm->arch.ram_psize) |
| 194 | return H_PARAMETER; |
| 195 | switch (flags) { |
| 196 | case 1: /* register VPA */ |
| 197 | if (len < 640) |
| 198 | return H_PARAMETER; |
| 199 | tvcpu->arch.vpa = va; |
| 200 | init_vpa(vcpu, va); |
| 201 | break; |
| 202 | case 2: /* register DTL */ |
| 203 | if (len < 48) |
| 204 | return H_PARAMETER; |
| 205 | if (!tvcpu->arch.vpa) |
| 206 | return H_RESOURCE; |
| 207 | len -= len % 48; |
| 208 | tvcpu->arch.dtl = va; |
| 209 | tvcpu->arch.dtl_end = va + len; |
| 210 | break; |
| 211 | case 3: /* register SLB shadow buffer */ |
| 212 | if (len < 8) |
| 213 | return H_PARAMETER; |
| 214 | if (!tvcpu->arch.vpa) |
| 215 | return H_RESOURCE; |
| 216 | tvcpu->arch.slb_shadow = va; |
| 217 | len = (len - 16) / 16; |
| 218 | tvcpu->arch.slb_shadow = va; |
| 219 | break; |
| 220 | } |
| 221 | } else { |
| 222 | switch (flags) { |
| 223 | case 5: /* unregister VPA */ |
| 224 | if (tvcpu->arch.slb_shadow || tvcpu->arch.dtl) |
| 225 | return H_RESOURCE; |
| 226 | tvcpu->arch.vpa = NULL; |
| 227 | break; |
| 228 | case 6: /* unregister DTL */ |
| 229 | tvcpu->arch.dtl = NULL; |
| 230 | break; |
| 231 | case 7: /* unregister SLB shadow buffer */ |
| 232 | tvcpu->arch.slb_shadow = NULL; |
| 233 | break; |
| 234 | } |
| 235 | } |
| 236 | return H_SUCCESS; |
| 237 | } |
| 238 | |
| 239 | int kvmppc_pseries_do_hcall(struct kvm_vcpu *vcpu) |
| 240 | { |
| 241 | unsigned long req = kvmppc_get_gpr(vcpu, 3); |
| 242 | unsigned long target, ret = H_SUCCESS; |
| 243 | struct kvm_vcpu *tvcpu; |
| 244 | |
| 245 | switch (req) { |
| 246 | case H_CEDE: |
| 247 | vcpu->arch.shregs.msr |= MSR_EE; |
| 248 | vcpu->arch.ceded = 1; |
| 249 | smp_mb(); |
| 250 | if (!vcpu->arch.prodded) |
| 251 | kvmppc_vcpu_block(vcpu); |
| 252 | else |
| 253 | vcpu->arch.prodded = 0; |
| 254 | smp_mb(); |
| 255 | vcpu->arch.ceded = 0; |
| 256 | break; |
| 257 | case H_PROD: |
| 258 | target = kvmppc_get_gpr(vcpu, 4); |
| 259 | tvcpu = kvmppc_find_vcpu(vcpu->kvm, target); |
| 260 | if (!tvcpu) { |
| 261 | ret = H_PARAMETER; |
| 262 | break; |
| 263 | } |
| 264 | tvcpu->arch.prodded = 1; |
| 265 | smp_mb(); |
| 266 | if (vcpu->arch.ceded) { |
| 267 | if (waitqueue_active(&vcpu->wq)) { |
| 268 | wake_up_interruptible(&vcpu->wq); |
| 269 | vcpu->stat.halt_wakeup++; |
| 270 | } |
| 271 | } |
| 272 | break; |
| 273 | case H_CONFER: |
| 274 | break; |
| 275 | case H_REGISTER_VPA: |
| 276 | ret = do_h_register_vpa(vcpu, kvmppc_get_gpr(vcpu, 4), |
| 277 | kvmppc_get_gpr(vcpu, 5), |
| 278 | kvmppc_get_gpr(vcpu, 6)); |
| 279 | break; |
| 280 | default: |
| 281 | return RESUME_HOST; |
| 282 | } |
| 283 | kvmppc_set_gpr(vcpu, 3, ret); |
| 284 | vcpu->arch.hcall_needed = 0; |
| 285 | return RESUME_GUEST; |
| 286 | } |
| 287 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 288 | static int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 289 | struct task_struct *tsk) |
| 290 | { |
| 291 | int r = RESUME_HOST; |
| 292 | |
| 293 | vcpu->stat.sum_exits++; |
| 294 | |
| 295 | run->exit_reason = KVM_EXIT_UNKNOWN; |
| 296 | run->ready_for_interrupt_injection = 1; |
| 297 | switch (vcpu->arch.trap) { |
| 298 | /* We're good on these - the host merely wanted to get our attention */ |
| 299 | case BOOK3S_INTERRUPT_HV_DECREMENTER: |
| 300 | vcpu->stat.dec_exits++; |
| 301 | r = RESUME_GUEST; |
| 302 | break; |
| 303 | case BOOK3S_INTERRUPT_EXTERNAL: |
| 304 | vcpu->stat.ext_intr_exits++; |
| 305 | r = RESUME_GUEST; |
| 306 | break; |
| 307 | case BOOK3S_INTERRUPT_PERFMON: |
| 308 | r = RESUME_GUEST; |
| 309 | break; |
| 310 | case BOOK3S_INTERRUPT_PROGRAM: |
| 311 | { |
| 312 | ulong flags; |
| 313 | /* |
| 314 | * Normally program interrupts are delivered directly |
| 315 | * to the guest by the hardware, but we can get here |
| 316 | * as a result of a hypervisor emulation interrupt |
| 317 | * (e40) getting turned into a 700 by BML RTAS. |
| 318 | */ |
| 319 | flags = vcpu->arch.shregs.msr & 0x1f0000ull; |
| 320 | kvmppc_core_queue_program(vcpu, flags); |
| 321 | r = RESUME_GUEST; |
| 322 | break; |
| 323 | } |
| 324 | case BOOK3S_INTERRUPT_SYSCALL: |
| 325 | { |
| 326 | /* hcall - punt to userspace */ |
| 327 | int i; |
| 328 | |
| 329 | if (vcpu->arch.shregs.msr & MSR_PR) { |
| 330 | /* sc 1 from userspace - reflect to guest syscall */ |
| 331 | kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_SYSCALL); |
| 332 | r = RESUME_GUEST; |
| 333 | break; |
| 334 | } |
| 335 | run->papr_hcall.nr = kvmppc_get_gpr(vcpu, 3); |
| 336 | for (i = 0; i < 9; ++i) |
| 337 | run->papr_hcall.args[i] = kvmppc_get_gpr(vcpu, 4 + i); |
| 338 | run->exit_reason = KVM_EXIT_PAPR_HCALL; |
| 339 | vcpu->arch.hcall_needed = 1; |
| 340 | r = RESUME_HOST; |
| 341 | break; |
| 342 | } |
| 343 | /* |
| 344 | * We get these next two if the guest does a bad real-mode access, |
| 345 | * as we have enabled VRMA (virtualized real mode area) mode in the |
| 346 | * LPCR. We just generate an appropriate DSI/ISI to the guest. |
| 347 | */ |
| 348 | case BOOK3S_INTERRUPT_H_DATA_STORAGE: |
| 349 | vcpu->arch.shregs.dsisr = vcpu->arch.fault_dsisr; |
| 350 | vcpu->arch.shregs.dar = vcpu->arch.fault_dar; |
| 351 | kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE, 0); |
| 352 | r = RESUME_GUEST; |
| 353 | break; |
| 354 | case BOOK3S_INTERRUPT_H_INST_STORAGE: |
| 355 | kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_INST_STORAGE, |
| 356 | 0x08000000); |
| 357 | r = RESUME_GUEST; |
| 358 | break; |
| 359 | /* |
| 360 | * This occurs if the guest executes an illegal instruction. |
| 361 | * We just generate a program interrupt to the guest, since |
| 362 | * we don't emulate any guest instructions at this stage. |
| 363 | */ |
| 364 | case BOOK3S_INTERRUPT_H_EMUL_ASSIST: |
| 365 | kvmppc_core_queue_program(vcpu, 0x80000); |
| 366 | r = RESUME_GUEST; |
| 367 | break; |
| 368 | default: |
| 369 | kvmppc_dump_regs(vcpu); |
| 370 | printk(KERN_EMERG "trap=0x%x | pc=0x%lx | msr=0x%llx\n", |
| 371 | vcpu->arch.trap, kvmppc_get_pc(vcpu), |
| 372 | vcpu->arch.shregs.msr); |
| 373 | r = RESUME_HOST; |
| 374 | BUG(); |
| 375 | break; |
| 376 | } |
| 377 | |
| 378 | |
| 379 | if (!(r & RESUME_HOST)) { |
| 380 | /* To avoid clobbering exit_reason, only check for signals if |
| 381 | * we aren't already exiting to userspace for some other |
| 382 | * reason. */ |
| 383 | if (signal_pending(tsk)) { |
| 384 | vcpu->stat.signal_exits++; |
| 385 | run->exit_reason = KVM_EXIT_INTR; |
| 386 | r = -EINTR; |
| 387 | } else { |
| 388 | kvmppc_core_deliver_interrupts(vcpu); |
| 389 | } |
| 390 | } |
| 391 | |
| 392 | return r; |
| 393 | } |
| 394 | |
| 395 | int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu, |
| 396 | struct kvm_sregs *sregs) |
| 397 | { |
| 398 | int i; |
| 399 | |
| 400 | sregs->pvr = vcpu->arch.pvr; |
| 401 | |
| 402 | memset(sregs, 0, sizeof(struct kvm_sregs)); |
| 403 | for (i = 0; i < vcpu->arch.slb_max; i++) { |
| 404 | sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige; |
| 405 | sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv; |
| 406 | } |
| 407 | |
| 408 | return 0; |
| 409 | } |
| 410 | |
| 411 | int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu, |
| 412 | struct kvm_sregs *sregs) |
| 413 | { |
| 414 | int i, j; |
| 415 | |
| 416 | kvmppc_set_pvr(vcpu, sregs->pvr); |
| 417 | |
| 418 | j = 0; |
| 419 | for (i = 0; i < vcpu->arch.slb_nr; i++) { |
| 420 | if (sregs->u.s.ppc64.slb[i].slbe & SLB_ESID_V) { |
| 421 | vcpu->arch.slb[j].orige = sregs->u.s.ppc64.slb[i].slbe; |
| 422 | vcpu->arch.slb[j].origv = sregs->u.s.ppc64.slb[i].slbv; |
| 423 | ++j; |
| 424 | } |
| 425 | } |
| 426 | vcpu->arch.slb_max = j; |
| 427 | |
| 428 | return 0; |
| 429 | } |
| 430 | |
| 431 | int kvmppc_core_check_processor_compat(void) |
| 432 | { |
| 433 | if (cpu_has_feature(CPU_FTR_HVMODE_206)) |
| 434 | return 0; |
| 435 | return -EIO; |
| 436 | } |
| 437 | |
| 438 | struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id) |
| 439 | { |
| 440 | struct kvm_vcpu *vcpu; |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 441 | int err = -EINVAL; |
| 442 | int core; |
| 443 | struct kvmppc_vcore *vcore; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 444 | unsigned long lpcr; |
| 445 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 446 | core = id / threads_per_core; |
| 447 | if (core >= KVM_MAX_VCORES) |
| 448 | goto out; |
| 449 | |
| 450 | err = -ENOMEM; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 451 | vcpu = kzalloc(sizeof(struct kvm_vcpu), GFP_KERNEL); |
| 452 | if (!vcpu) |
| 453 | goto out; |
| 454 | |
| 455 | err = kvm_vcpu_init(vcpu, kvm, id); |
| 456 | if (err) |
| 457 | goto free_vcpu; |
| 458 | |
| 459 | vcpu->arch.shared = &vcpu->arch.shregs; |
| 460 | vcpu->arch.last_cpu = -1; |
| 461 | vcpu->arch.mmcr[0] = MMCR0_FC; |
| 462 | vcpu->arch.ctrl = CTRL_RUNLATCH; |
| 463 | /* default to host PVR, since we can't spoof it */ |
| 464 | vcpu->arch.pvr = mfspr(SPRN_PVR); |
| 465 | kvmppc_set_pvr(vcpu, vcpu->arch.pvr); |
| 466 | |
| 467 | lpcr = kvm->arch.host_lpcr & (LPCR_PECE | LPCR_LPES); |
| 468 | lpcr |= LPCR_VPM0 | LPCR_VRMA_L | (4UL << LPCR_DPFD_SH) | LPCR_HDICE; |
| 469 | vcpu->arch.lpcr = lpcr; |
| 470 | |
| 471 | kvmppc_mmu_book3s_hv_init(vcpu); |
| 472 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 473 | /* |
| 474 | * Some vcpus may start out in stopped state. If we initialize |
| 475 | * them to busy-in-host state they will stop other vcpus in the |
| 476 | * vcore from running. Instead we initialize them to blocked |
| 477 | * state, effectively considering them to be stopped until we |
| 478 | * see the first run ioctl for them. |
| 479 | */ |
| 480 | vcpu->arch.state = KVMPPC_VCPU_BLOCKED; |
| 481 | |
| 482 | init_waitqueue_head(&vcpu->arch.cpu_run); |
| 483 | |
| 484 | mutex_lock(&kvm->lock); |
| 485 | vcore = kvm->arch.vcores[core]; |
| 486 | if (!vcore) { |
| 487 | vcore = kzalloc(sizeof(struct kvmppc_vcore), GFP_KERNEL); |
| 488 | if (vcore) { |
| 489 | INIT_LIST_HEAD(&vcore->runnable_threads); |
| 490 | spin_lock_init(&vcore->lock); |
| 491 | } |
| 492 | kvm->arch.vcores[core] = vcore; |
| 493 | } |
| 494 | mutex_unlock(&kvm->lock); |
| 495 | |
| 496 | if (!vcore) |
| 497 | goto free_vcpu; |
| 498 | |
| 499 | spin_lock(&vcore->lock); |
| 500 | ++vcore->num_threads; |
| 501 | ++vcore->n_blocked; |
| 502 | spin_unlock(&vcore->lock); |
| 503 | vcpu->arch.vcore = vcore; |
| 504 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 505 | return vcpu; |
| 506 | |
| 507 | free_vcpu: |
| 508 | kfree(vcpu); |
| 509 | out: |
| 510 | return ERR_PTR(err); |
| 511 | } |
| 512 | |
| 513 | void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu) |
| 514 | { |
| 515 | kvm_vcpu_uninit(vcpu); |
| 516 | kfree(vcpu); |
| 517 | } |
| 518 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 519 | static void kvmppc_vcpu_blocked(struct kvm_vcpu *vcpu) |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 520 | { |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 521 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
| 522 | |
| 523 | spin_lock(&vc->lock); |
| 524 | vcpu->arch.state = KVMPPC_VCPU_BLOCKED; |
| 525 | ++vc->n_blocked; |
| 526 | if (vc->n_runnable > 0 && |
| 527 | vc->n_runnable + vc->n_blocked == vc->num_threads) { |
| 528 | vcpu = list_first_entry(&vc->runnable_threads, struct kvm_vcpu, |
| 529 | arch.run_list); |
| 530 | wake_up(&vcpu->arch.cpu_run); |
| 531 | } |
| 532 | spin_unlock(&vc->lock); |
| 533 | } |
| 534 | |
| 535 | static void kvmppc_vcpu_unblocked(struct kvm_vcpu *vcpu) |
| 536 | { |
| 537 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
| 538 | |
| 539 | spin_lock(&vc->lock); |
| 540 | vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST; |
| 541 | --vc->n_blocked; |
| 542 | spin_unlock(&vc->lock); |
| 543 | } |
| 544 | |
| 545 | extern int __kvmppc_vcore_entry(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu); |
| 546 | extern void xics_wake_cpu(int cpu); |
| 547 | |
| 548 | static void kvmppc_remove_runnable(struct kvmppc_vcore *vc, |
| 549 | struct kvm_vcpu *vcpu) |
| 550 | { |
| 551 | struct kvm_vcpu *v; |
| 552 | |
| 553 | if (vcpu->arch.state != KVMPPC_VCPU_RUNNABLE) |
| 554 | return; |
| 555 | vcpu->arch.state = KVMPPC_VCPU_BUSY_IN_HOST; |
| 556 | --vc->n_runnable; |
| 557 | /* decrement the physical thread id of each following vcpu */ |
| 558 | v = vcpu; |
| 559 | list_for_each_entry_continue(v, &vc->runnable_threads, arch.run_list) |
| 560 | --v->arch.ptid; |
| 561 | list_del(&vcpu->arch.run_list); |
| 562 | } |
| 563 | |
| 564 | static void kvmppc_start_thread(struct kvm_vcpu *vcpu) |
| 565 | { |
| 566 | int cpu; |
| 567 | struct paca_struct *tpaca; |
| 568 | struct kvmppc_vcore *vc = vcpu->arch.vcore; |
| 569 | |
| 570 | cpu = vc->pcpu + vcpu->arch.ptid; |
| 571 | tpaca = &paca[cpu]; |
| 572 | tpaca->kvm_hstate.kvm_vcpu = vcpu; |
| 573 | tpaca->kvm_hstate.kvm_vcore = vc; |
| 574 | smp_wmb(); |
| 575 | #ifdef CONFIG_PPC_ICP_NATIVE |
| 576 | if (vcpu->arch.ptid) { |
| 577 | tpaca->cpu_start = 0x80; |
| 578 | tpaca->kvm_hstate.in_guest = KVM_GUEST_MODE_GUEST; |
| 579 | wmb(); |
| 580 | xics_wake_cpu(cpu); |
| 581 | ++vc->n_woken; |
| 582 | } |
| 583 | #endif |
| 584 | } |
| 585 | |
| 586 | static void kvmppc_wait_for_nap(struct kvmppc_vcore *vc) |
| 587 | { |
| 588 | int i; |
| 589 | |
| 590 | HMT_low(); |
| 591 | i = 0; |
| 592 | while (vc->nap_count < vc->n_woken) { |
| 593 | if (++i >= 1000000) { |
| 594 | pr_err("kvmppc_wait_for_nap timeout %d %d\n", |
| 595 | vc->nap_count, vc->n_woken); |
| 596 | break; |
| 597 | } |
| 598 | cpu_relax(); |
| 599 | } |
| 600 | HMT_medium(); |
| 601 | } |
| 602 | |
| 603 | /* |
| 604 | * Check that we are on thread 0 and that any other threads in |
| 605 | * this core are off-line. |
| 606 | */ |
| 607 | static int on_primary_thread(void) |
| 608 | { |
| 609 | int cpu = smp_processor_id(); |
| 610 | int thr = cpu_thread_in_core(cpu); |
| 611 | |
| 612 | if (thr) |
| 613 | return 0; |
| 614 | while (++thr < threads_per_core) |
| 615 | if (cpu_online(cpu + thr)) |
| 616 | return 0; |
| 617 | return 1; |
| 618 | } |
| 619 | |
| 620 | /* |
| 621 | * Run a set of guest threads on a physical core. |
| 622 | * Called with vc->lock held. |
| 623 | */ |
| 624 | static int kvmppc_run_core(struct kvmppc_vcore *vc) |
| 625 | { |
| 626 | struct kvm_vcpu *vcpu, *vnext; |
| 627 | long ret; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 628 | u64 now; |
| 629 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 630 | /* don't start if any threads have a signal pending */ |
| 631 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) |
| 632 | if (signal_pending(vcpu->arch.run_task)) |
| 633 | return 0; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 634 | |
| 635 | /* |
| 636 | * Make sure we are running on thread 0, and that |
| 637 | * secondary threads are offline. |
| 638 | * XXX we should also block attempts to bring any |
| 639 | * secondary threads online. |
| 640 | */ |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 641 | if (threads_per_core > 1 && !on_primary_thread()) { |
| 642 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) |
| 643 | vcpu->arch.ret = -EBUSY; |
| 644 | goto out; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 645 | } |
| 646 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 647 | vc->n_woken = 0; |
| 648 | vc->nap_count = 0; |
| 649 | vc->entry_exit_count = 0; |
| 650 | vc->vcore_running = 1; |
| 651 | vc->in_guest = 0; |
| 652 | vc->pcpu = smp_processor_id(); |
| 653 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) |
| 654 | kvmppc_start_thread(vcpu); |
| 655 | vcpu = list_first_entry(&vc->runnable_threads, struct kvm_vcpu, |
| 656 | arch.run_list); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 657 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 658 | spin_unlock(&vc->lock); |
| 659 | |
| 660 | preempt_disable(); |
| 661 | kvm_guest_enter(); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 662 | __kvmppc_vcore_entry(NULL, vcpu); |
| 663 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 664 | /* wait for secondary threads to finish writing their state to memory */ |
| 665 | spin_lock(&vc->lock); |
| 666 | if (vc->nap_count < vc->n_woken) |
| 667 | kvmppc_wait_for_nap(vc); |
| 668 | /* prevent other vcpu threads from doing kvmppc_start_thread() now */ |
| 669 | vc->vcore_running = 2; |
| 670 | spin_unlock(&vc->lock); |
| 671 | |
| 672 | /* make sure updates to secondary vcpu structs are visible now */ |
| 673 | smp_mb(); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 674 | kvm_guest_exit(); |
| 675 | |
| 676 | preempt_enable(); |
| 677 | kvm_resched(vcpu); |
| 678 | |
| 679 | now = get_tb(); |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 680 | list_for_each_entry(vcpu, &vc->runnable_threads, arch.run_list) { |
| 681 | /* cancel pending dec exception if dec is positive */ |
| 682 | if (now < vcpu->arch.dec_expires && |
| 683 | kvmppc_core_pending_dec(vcpu)) |
| 684 | kvmppc_core_dequeue_dec(vcpu); |
| 685 | if (!vcpu->arch.trap) { |
| 686 | if (signal_pending(vcpu->arch.run_task)) { |
| 687 | vcpu->arch.kvm_run->exit_reason = KVM_EXIT_INTR; |
| 688 | vcpu->arch.ret = -EINTR; |
| 689 | } |
| 690 | continue; /* didn't get to run */ |
| 691 | } |
| 692 | ret = kvmppc_handle_exit(vcpu->arch.kvm_run, vcpu, |
| 693 | vcpu->arch.run_task); |
| 694 | vcpu->arch.ret = ret; |
| 695 | vcpu->arch.trap = 0; |
| 696 | } |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 697 | |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 698 | spin_lock(&vc->lock); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 699 | out: |
Paul Mackerras | 371fefd | 2011-06-29 00:23:08 +0000 | [diff] [blame^] | 700 | vc->vcore_running = 0; |
| 701 | list_for_each_entry_safe(vcpu, vnext, &vc->runnable_threads, |
| 702 | arch.run_list) { |
| 703 | if (vcpu->arch.ret != RESUME_GUEST) { |
| 704 | kvmppc_remove_runnable(vc, vcpu); |
| 705 | wake_up(&vcpu->arch.cpu_run); |
| 706 | } |
| 707 | } |
| 708 | |
| 709 | return 1; |
| 710 | } |
| 711 | |
| 712 | static int kvmppc_run_vcpu(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu) |
| 713 | { |
| 714 | int ptid; |
| 715 | int wait_state; |
| 716 | struct kvmppc_vcore *vc; |
| 717 | DEFINE_WAIT(wait); |
| 718 | |
| 719 | /* No need to go into the guest when all we do is going out */ |
| 720 | if (signal_pending(current)) { |
| 721 | kvm_run->exit_reason = KVM_EXIT_INTR; |
| 722 | return -EINTR; |
| 723 | } |
| 724 | |
| 725 | kvm_run->exit_reason = 0; |
| 726 | vcpu->arch.ret = RESUME_GUEST; |
| 727 | vcpu->arch.trap = 0; |
| 728 | |
| 729 | flush_fp_to_thread(current); |
| 730 | flush_altivec_to_thread(current); |
| 731 | flush_vsx_to_thread(current); |
| 732 | |
| 733 | /* |
| 734 | * Synchronize with other threads in this virtual core |
| 735 | */ |
| 736 | vc = vcpu->arch.vcore; |
| 737 | spin_lock(&vc->lock); |
| 738 | /* This happens the first time this is called for a vcpu */ |
| 739 | if (vcpu->arch.state == KVMPPC_VCPU_BLOCKED) |
| 740 | --vc->n_blocked; |
| 741 | vcpu->arch.state = KVMPPC_VCPU_RUNNABLE; |
| 742 | ptid = vc->n_runnable; |
| 743 | vcpu->arch.run_task = current; |
| 744 | vcpu->arch.kvm_run = kvm_run; |
| 745 | vcpu->arch.ptid = ptid; |
| 746 | list_add_tail(&vcpu->arch.run_list, &vc->runnable_threads); |
| 747 | ++vc->n_runnable; |
| 748 | |
| 749 | wait_state = TASK_INTERRUPTIBLE; |
| 750 | while (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE) { |
| 751 | if (signal_pending(current)) { |
| 752 | if (!vc->vcore_running) { |
| 753 | kvm_run->exit_reason = KVM_EXIT_INTR; |
| 754 | vcpu->arch.ret = -EINTR; |
| 755 | break; |
| 756 | } |
| 757 | /* have to wait for vcore to stop executing guest */ |
| 758 | wait_state = TASK_UNINTERRUPTIBLE; |
| 759 | smp_send_reschedule(vc->pcpu); |
| 760 | } |
| 761 | |
| 762 | if (!vc->vcore_running && |
| 763 | vc->n_runnable + vc->n_blocked == vc->num_threads) { |
| 764 | /* we can run now */ |
| 765 | if (kvmppc_run_core(vc)) |
| 766 | continue; |
| 767 | } |
| 768 | |
| 769 | if (vc->vcore_running == 1 && VCORE_EXIT_COUNT(vc) == 0) |
| 770 | kvmppc_start_thread(vcpu); |
| 771 | |
| 772 | /* wait for other threads to come in, or wait for vcore */ |
| 773 | prepare_to_wait(&vcpu->arch.cpu_run, &wait, wait_state); |
| 774 | spin_unlock(&vc->lock); |
| 775 | schedule(); |
| 776 | finish_wait(&vcpu->arch.cpu_run, &wait); |
| 777 | spin_lock(&vc->lock); |
| 778 | } |
| 779 | |
| 780 | if (vcpu->arch.state == KVMPPC_VCPU_RUNNABLE) |
| 781 | kvmppc_remove_runnable(vc, vcpu); |
| 782 | spin_unlock(&vc->lock); |
| 783 | |
| 784 | return vcpu->arch.ret; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 785 | } |
| 786 | |
Paul Mackerras | a8606e2 | 2011-06-29 00:22:05 +0000 | [diff] [blame] | 787 | int kvmppc_vcpu_run(struct kvm_run *run, struct kvm_vcpu *vcpu) |
| 788 | { |
| 789 | int r; |
| 790 | |
| 791 | do { |
| 792 | r = kvmppc_run_vcpu(run, vcpu); |
| 793 | |
| 794 | if (run->exit_reason == KVM_EXIT_PAPR_HCALL && |
| 795 | !(vcpu->arch.shregs.msr & MSR_PR)) { |
| 796 | r = kvmppc_pseries_do_hcall(vcpu); |
| 797 | kvmppc_core_deliver_interrupts(vcpu); |
| 798 | } |
| 799 | } while (r == RESUME_GUEST); |
| 800 | return r; |
| 801 | } |
| 802 | |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 803 | static long kvmppc_stt_npages(unsigned long window_size) |
| 804 | { |
| 805 | return ALIGN((window_size >> SPAPR_TCE_SHIFT) |
| 806 | * sizeof(u64), PAGE_SIZE) / PAGE_SIZE; |
| 807 | } |
| 808 | |
| 809 | static void release_spapr_tce_table(struct kvmppc_spapr_tce_table *stt) |
| 810 | { |
| 811 | struct kvm *kvm = stt->kvm; |
| 812 | int i; |
| 813 | |
| 814 | mutex_lock(&kvm->lock); |
| 815 | list_del(&stt->list); |
| 816 | for (i = 0; i < kvmppc_stt_npages(stt->window_size); i++) |
| 817 | __free_page(stt->pages[i]); |
| 818 | kfree(stt); |
| 819 | mutex_unlock(&kvm->lock); |
| 820 | |
| 821 | kvm_put_kvm(kvm); |
| 822 | } |
| 823 | |
| 824 | static int kvm_spapr_tce_fault(struct vm_area_struct *vma, struct vm_fault *vmf) |
| 825 | { |
| 826 | struct kvmppc_spapr_tce_table *stt = vma->vm_file->private_data; |
| 827 | struct page *page; |
| 828 | |
| 829 | if (vmf->pgoff >= kvmppc_stt_npages(stt->window_size)) |
| 830 | return VM_FAULT_SIGBUS; |
| 831 | |
| 832 | page = stt->pages[vmf->pgoff]; |
| 833 | get_page(page); |
| 834 | vmf->page = page; |
| 835 | return 0; |
| 836 | } |
| 837 | |
| 838 | static const struct vm_operations_struct kvm_spapr_tce_vm_ops = { |
| 839 | .fault = kvm_spapr_tce_fault, |
| 840 | }; |
| 841 | |
| 842 | static int kvm_spapr_tce_mmap(struct file *file, struct vm_area_struct *vma) |
| 843 | { |
| 844 | vma->vm_ops = &kvm_spapr_tce_vm_ops; |
| 845 | return 0; |
| 846 | } |
| 847 | |
| 848 | static int kvm_spapr_tce_release(struct inode *inode, struct file *filp) |
| 849 | { |
| 850 | struct kvmppc_spapr_tce_table *stt = filp->private_data; |
| 851 | |
| 852 | release_spapr_tce_table(stt); |
| 853 | return 0; |
| 854 | } |
| 855 | |
| 856 | static struct file_operations kvm_spapr_tce_fops = { |
| 857 | .mmap = kvm_spapr_tce_mmap, |
| 858 | .release = kvm_spapr_tce_release, |
| 859 | }; |
| 860 | |
| 861 | long kvm_vm_ioctl_create_spapr_tce(struct kvm *kvm, |
| 862 | struct kvm_create_spapr_tce *args) |
| 863 | { |
| 864 | struct kvmppc_spapr_tce_table *stt = NULL; |
| 865 | long npages; |
| 866 | int ret = -ENOMEM; |
| 867 | int i; |
| 868 | |
| 869 | /* Check this LIOBN hasn't been previously allocated */ |
| 870 | list_for_each_entry(stt, &kvm->arch.spapr_tce_tables, list) { |
| 871 | if (stt->liobn == args->liobn) |
| 872 | return -EBUSY; |
| 873 | } |
| 874 | |
| 875 | npages = kvmppc_stt_npages(args->window_size); |
| 876 | |
| 877 | stt = kzalloc(sizeof(*stt) + npages* sizeof(struct page *), |
| 878 | GFP_KERNEL); |
| 879 | if (!stt) |
| 880 | goto fail; |
| 881 | |
| 882 | stt->liobn = args->liobn; |
| 883 | stt->window_size = args->window_size; |
| 884 | stt->kvm = kvm; |
| 885 | |
| 886 | for (i = 0; i < npages; i++) { |
| 887 | stt->pages[i] = alloc_page(GFP_KERNEL | __GFP_ZERO); |
| 888 | if (!stt->pages[i]) |
| 889 | goto fail; |
| 890 | } |
| 891 | |
| 892 | kvm_get_kvm(kvm); |
| 893 | |
| 894 | mutex_lock(&kvm->lock); |
| 895 | list_add(&stt->list, &kvm->arch.spapr_tce_tables); |
| 896 | |
| 897 | mutex_unlock(&kvm->lock); |
| 898 | |
| 899 | return anon_inode_getfd("kvm-spapr-tce", &kvm_spapr_tce_fops, |
| 900 | stt, O_RDWR); |
| 901 | |
| 902 | fail: |
| 903 | if (stt) { |
| 904 | for (i = 0; i < npages; i++) |
| 905 | if (stt->pages[i]) |
| 906 | __free_page(stt->pages[i]); |
| 907 | |
| 908 | kfree(stt); |
| 909 | } |
| 910 | return ret; |
| 911 | } |
| 912 | |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 913 | int kvmppc_core_prepare_memory_region(struct kvm *kvm, |
| 914 | struct kvm_userspace_memory_region *mem) |
| 915 | { |
| 916 | if (mem->guest_phys_addr == 0 && mem->memory_size != 0) |
| 917 | return kvmppc_prepare_vrma(kvm, mem); |
| 918 | return 0; |
| 919 | } |
| 920 | |
| 921 | void kvmppc_core_commit_memory_region(struct kvm *kvm, |
| 922 | struct kvm_userspace_memory_region *mem) |
| 923 | { |
| 924 | if (mem->guest_phys_addr == 0 && mem->memory_size != 0) |
| 925 | kvmppc_map_vrma(kvm, mem); |
| 926 | } |
| 927 | |
| 928 | int kvmppc_core_init_vm(struct kvm *kvm) |
| 929 | { |
| 930 | long r; |
| 931 | |
| 932 | /* Allocate hashed page table */ |
| 933 | r = kvmppc_alloc_hpt(kvm); |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 934 | if (r) |
| 935 | return r; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 936 | |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 937 | INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables); |
| 938 | return 0; |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 939 | } |
| 940 | |
| 941 | void kvmppc_core_destroy_vm(struct kvm *kvm) |
| 942 | { |
| 943 | kvmppc_free_hpt(kvm); |
David Gibson | 54738c0 | 2011-06-29 00:22:41 +0000 | [diff] [blame] | 944 | WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables)); |
Paul Mackerras | de56a94 | 2011-06-29 00:21:34 +0000 | [diff] [blame] | 945 | } |
| 946 | |
| 947 | /* These are stubs for now */ |
| 948 | void kvmppc_mmu_pte_pflush(struct kvm_vcpu *vcpu, ulong pa_start, ulong pa_end) |
| 949 | { |
| 950 | } |
| 951 | |
| 952 | /* We don't need to emulate any privileged instructions or dcbz */ |
| 953 | int kvmppc_core_emulate_op(struct kvm_run *run, struct kvm_vcpu *vcpu, |
| 954 | unsigned int inst, int *advance) |
| 955 | { |
| 956 | return EMULATE_FAIL; |
| 957 | } |
| 958 | |
| 959 | int kvmppc_core_emulate_mtspr(struct kvm_vcpu *vcpu, int sprn, int rs) |
| 960 | { |
| 961 | return EMULATE_FAIL; |
| 962 | } |
| 963 | |
| 964 | int kvmppc_core_emulate_mfspr(struct kvm_vcpu *vcpu, int sprn, int rt) |
| 965 | { |
| 966 | return EMULATE_FAIL; |
| 967 | } |
| 968 | |
| 969 | static int kvmppc_book3s_hv_init(void) |
| 970 | { |
| 971 | int r; |
| 972 | |
| 973 | r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE); |
| 974 | |
| 975 | if (r) |
| 976 | return r; |
| 977 | |
| 978 | r = kvmppc_mmu_hv_init(); |
| 979 | |
| 980 | return r; |
| 981 | } |
| 982 | |
| 983 | static void kvmppc_book3s_hv_exit(void) |
| 984 | { |
| 985 | kvm_exit(); |
| 986 | } |
| 987 | |
| 988 | module_init(kvmppc_book3s_hv_init); |
| 989 | module_exit(kvmppc_book3s_hv_exit); |