?  search:
summary | log | graphiclog1 | graphiclog2 | commit | commitdiff | tree | refs | edit | fork
blame | history | raw | HEAD
Merge tag 'for_linus' of git://git.kernel.org/pub/scm/linux/kernel/git/mst/vhost
[cris-mirror.git] / arch / powerpc / kvm / book3s_pr.c
blob3ae752314b3491c53e210f87ef88fbe69e98b516
1 /*
2 * Copyright (C) 2009. SUSE Linux Products GmbH. All rights reserved.
3 *
4 * Authors:
5 * Alexander Graf <agraf@suse.de>
6 * Kevin Wolf <mail@kevin-wolf.de>
7 * Paul Mackerras <paulus@samba.org>
8 *
9 * Description:
10 * Functions relating to running KVM on Book 3S processors where
11 * we don't have access to hypervisor mode, and we run the guest
12 * in problem state (user mode).
13 *
14 * This file is derived from arch/powerpc/kvm/44x.c,
15 * by Hollis Blanchard <hollisb@us.ibm.com>.
16 *
17 * This program is free software; you can redistribute it and/or modify
18 * it under the terms of the GNU General Public License, version 2, as
19 * published by the Free Software Foundation.
20 */
21
22 #include <linux/kvm_host.h>
23 #include <linux/export.h>
24 #include <linux/err.h>
25 #include <linux/slab.h>
26
27 #include <asm/reg.h>
28 #include <asm/cputable.h>
29 #include <asm/cacheflush.h>
30 #include <asm/tlbflush.h>
31 #include <linux/uaccess.h>
32 #include <asm/io.h>
33 #include <asm/kvm_ppc.h>
34 #include <asm/kvm_book3s.h>
35 #include <asm/mmu_context.h>
36 #include <asm/switch_to.h>
37 #include <asm/firmware.h>
38 #include <asm/setup.h>
39 #include <linux/gfp.h>
40 #include <linux/sched.h>
41 #include <linux/vmalloc.h>
42 #include <linux/highmem.h>
43 #include <linux/module.h>
44 #include <linux/miscdevice.h>
45
46 #include "book3s.h"
47
48 #define CREATE_TRACE_POINTS
49 #include "trace_pr.h"
50
51 /* #define EXIT_DEBUG */
52 /* #define DEBUG_EXT */
53
54 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
55 ulong msr);
56 static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac);
57
58 /* Some compatibility defines */
59 #ifdef CONFIG_PPC_BOOK3S_32
60 #define MSR_USER32 MSR_USER
61 #define MSR_USER64 MSR_USER
62 #define HW_PAGE_SIZE PAGE_SIZE
63 #define HPTE_R_M _PAGE_COHERENT
64 #endif
65
66 static bool kvmppc_is_split_real(struct kvm_vcpu *vcpu)
67 {
68 ulong msr = kvmppc_get_msr(vcpu);
69 return (msr & (MSR_IR|MSR_DR)) == MSR_DR;
70 }
71
72 static void kvmppc_fixup_split_real(struct kvm_vcpu *vcpu)
73 {
74 ulong msr = kvmppc_get_msr(vcpu);
75 ulong pc = kvmppc_get_pc(vcpu);
76
77 /* We are in DR only split real mode */
78 if ((msr & (MSR_IR|MSR_DR)) != MSR_DR)
79 return;
80
81 /* We have not fixed up the guest already */
82 if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK)
83 return;
84
85 /* The code is in fixupable address space */
86 if (pc & SPLIT_HACK_MASK)
87 return;
88
89 vcpu->arch.hflags |= BOOK3S_HFLAG_SPLIT_HACK;
90 kvmppc_set_pc(vcpu, pc | SPLIT_HACK_OFFS);
91 }
92
93 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu);
94
95 static void kvmppc_core_vcpu_load_pr(struct kvm_vcpu *vcpu, int cpu)
96 {
97 #ifdef CONFIG_PPC_BOOK3S_64
98 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
99 memcpy(svcpu->slb, to_book3s(vcpu)->slb_shadow, sizeof(svcpu->slb));
100 svcpu->slb_max = to_book3s(vcpu)->slb_shadow_max;
101 svcpu->in_use = 0;
102 svcpu_put(svcpu);
103 #endif
104
105 /* Disable AIL if supported */
106 if (cpu_has_feature(CPU_FTR_HVMODE) &&
107 cpu_has_feature(CPU_FTR_ARCH_207S))
108 mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) & ~LPCR_AIL);
109
110 vcpu->cpu = smp_processor_id();
111 #ifdef CONFIG_PPC_BOOK3S_32
112 current->thread.kvm_shadow_vcpu = vcpu->arch.shadow_vcpu;
113 #endif
114
115 if (kvmppc_is_split_real(vcpu))
116 kvmppc_fixup_split_real(vcpu);
117 }
118
119 static void kvmppc_core_vcpu_put_pr(struct kvm_vcpu *vcpu)
120 {
121 #ifdef CONFIG_PPC_BOOK3S_64
122 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
123 if (svcpu->in_use) {
124 kvmppc_copy_from_svcpu(vcpu);
125 }
126 memcpy(to_book3s(vcpu)->slb_shadow, svcpu->slb, sizeof(svcpu->slb));
127 to_book3s(vcpu)->slb_shadow_max = svcpu->slb_max;
128 svcpu_put(svcpu);
129 #endif
130
131 if (kvmppc_is_split_real(vcpu))
132 kvmppc_unfixup_split_real(vcpu);
133
134 kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX);
135 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
136
137 /* Enable AIL if supported */
138 if (cpu_has_feature(CPU_FTR_HVMODE) &&
139 cpu_has_feature(CPU_FTR_ARCH_207S))
140 mtspr(SPRN_LPCR, mfspr(SPRN_LPCR) | LPCR_AIL_3);
141
142 vcpu->cpu = -1;
143 }
144
145 /* Copy data needed by real-mode code from vcpu to shadow vcpu */
146 void kvmppc_copy_to_svcpu(struct kvm_vcpu *vcpu)
147 {
148 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
149
150 svcpu->gpr[0] = vcpu->arch.gpr[0];
151 svcpu->gpr[1] = vcpu->arch.gpr[1];
152 svcpu->gpr[2] = vcpu->arch.gpr[2];
153 svcpu->gpr[3] = vcpu->arch.gpr[3];
154 svcpu->gpr[4] = vcpu->arch.gpr[4];
155 svcpu->gpr[5] = vcpu->arch.gpr[5];
156 svcpu->gpr[6] = vcpu->arch.gpr[6];
157 svcpu->gpr[7] = vcpu->arch.gpr[7];
158 svcpu->gpr[8] = vcpu->arch.gpr[8];
159 svcpu->gpr[9] = vcpu->arch.gpr[9];
160 svcpu->gpr[10] = vcpu->arch.gpr[10];
161 svcpu->gpr[11] = vcpu->arch.gpr[11];
162 svcpu->gpr[12] = vcpu->arch.gpr[12];
163 svcpu->gpr[13] = vcpu->arch.gpr[13];
164 svcpu->cr = vcpu->arch.cr;
165 svcpu->xer = vcpu->arch.xer;
166 svcpu->ctr = vcpu->arch.ctr;
167 svcpu->lr = vcpu->arch.lr;
168 svcpu->pc = vcpu->arch.pc;
169 #ifdef CONFIG_PPC_BOOK3S_64
170 svcpu->shadow_fscr = vcpu->arch.shadow_fscr;
171 #endif
172 /*
173 * Now also save the current time base value. We use this
174 * to find the guest purr and spurr value.
175 */
176 vcpu->arch.entry_tb = get_tb();
177 vcpu->arch.entry_vtb = get_vtb();
178 if (cpu_has_feature(CPU_FTR_ARCH_207S))
179 vcpu->arch.entry_ic = mfspr(SPRN_IC);
180 svcpu->in_use = true;
181
182 svcpu_put(svcpu);
183 }
184
185 /* Copy data touched by real-mode code from shadow vcpu back to vcpu */
186 void kvmppc_copy_from_svcpu(struct kvm_vcpu *vcpu)
187 {
188 struct kvmppc_book3s_shadow_vcpu *svcpu = svcpu_get(vcpu);
189
190 /*
191 * Maybe we were already preempted and synced the svcpu from
192 * our preempt notifiers. Don't bother touching this svcpu then.
193 */
194 if (!svcpu->in_use)
195 goto out;
196
197 vcpu->arch.gpr[0] = svcpu->gpr[0];
198 vcpu->arch.gpr[1] = svcpu->gpr[1];
199 vcpu->arch.gpr[2] = svcpu->gpr[2];
200 vcpu->arch.gpr[3] = svcpu->gpr[3];
201 vcpu->arch.gpr[4] = svcpu->gpr[4];
202 vcpu->arch.gpr[5] = svcpu->gpr[5];
203 vcpu->arch.gpr[6] = svcpu->gpr[6];
204 vcpu->arch.gpr[7] = svcpu->gpr[7];
205 vcpu->arch.gpr[8] = svcpu->gpr[8];
206 vcpu->arch.gpr[9] = svcpu->gpr[9];
207 vcpu->arch.gpr[10] = svcpu->gpr[10];
208 vcpu->arch.gpr[11] = svcpu->gpr[11];
209 vcpu->arch.gpr[12] = svcpu->gpr[12];
210 vcpu->arch.gpr[13] = svcpu->gpr[13];
211 vcpu->arch.cr = svcpu->cr;
212 vcpu->arch.xer = svcpu->xer;
213 vcpu->arch.ctr = svcpu->ctr;
214 vcpu->arch.lr = svcpu->lr;
215 vcpu->arch.pc = svcpu->pc;
216 vcpu->arch.shadow_srr1 = svcpu->shadow_srr1;
217 vcpu->arch.fault_dar = svcpu->fault_dar;
218 vcpu->arch.fault_dsisr = svcpu->fault_dsisr;
219 vcpu->arch.last_inst = svcpu->last_inst;
220 #ifdef CONFIG_PPC_BOOK3S_64
221 vcpu->arch.shadow_fscr = svcpu->shadow_fscr;
222 #endif
223 /*
224 * Update purr and spurr using time base on exit.
225 */
226 vcpu->arch.purr += get_tb() - vcpu->arch.entry_tb;
227 vcpu->arch.spurr += get_tb() - vcpu->arch.entry_tb;
228 to_book3s(vcpu)->vtb += get_vtb() - vcpu->arch.entry_vtb;
229 if (cpu_has_feature(CPU_FTR_ARCH_207S))
230 vcpu->arch.ic += mfspr(SPRN_IC) - vcpu->arch.entry_ic;
231 svcpu->in_use = false;
232
233 out:
234 svcpu_put(svcpu);
235 }
236
237 static int kvmppc_core_check_requests_pr(struct kvm_vcpu *vcpu)
238 {
239 int r = 1; /* Indicate we want to get back into the guest */
240
241 /* We misuse TLB_FLUSH to indicate that we want to clear
242 all shadow cache entries */
243 if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
244 kvmppc_mmu_pte_flush(vcpu, 0, 0);
245
246 return r;
247 }
248
249 /************* MMU Notifiers *************/
250 static void do_kvm_unmap_hva(struct kvm *kvm, unsigned long start,
251 unsigned long end)
252 {
253 long i;
254 struct kvm_vcpu *vcpu;
255 struct kvm_memslots *slots;
256 struct kvm_memory_slot *memslot;
257
258 slots = kvm_memslots(kvm);
259 kvm_for_each_memslot(memslot, slots) {
260 unsigned long hva_start, hva_end;
261 gfn_t gfn, gfn_end;
262
263 hva_start = max(start, memslot->userspace_addr);
264 hva_end = min(end, memslot->userspace_addr +
265 (memslot->npages << PAGE_SHIFT));
266 if (hva_start >= hva_end)
267 continue;
268 /*
269 * {gfn(page) | page intersects with [hva_start, hva_end)} =
270 * {gfn, gfn+1, ..., gfn_end-1}.
271 */
272 gfn = hva_to_gfn_memslot(hva_start, memslot);
273 gfn_end = hva_to_gfn_memslot(hva_end + PAGE_SIZE - 1, memslot);
274 kvm_for_each_vcpu(i, vcpu, kvm)
275 kvmppc_mmu_pte_pflush(vcpu, gfn << PAGE_SHIFT,
276 gfn_end << PAGE_SHIFT);
277 }
278 }
279
280 static int kvm_unmap_hva_pr(struct kvm *kvm, unsigned long hva)
281 {
282 trace_kvm_unmap_hva(hva);
283
284 do_kvm_unmap_hva(kvm, hva, hva + PAGE_SIZE);
285
286 return 0;
287 }
288
289 static int kvm_unmap_hva_range_pr(struct kvm *kvm, unsigned long start,
290 unsigned long end)
291 {
292 do_kvm_unmap_hva(kvm, start, end);
293
294 return 0;
295 }
296
297 static int kvm_age_hva_pr(struct kvm *kvm, unsigned long start,
298 unsigned long end)
299 {
300 /* XXX could be more clever ;) */
301 return 0;
302 }
303
304 static int kvm_test_age_hva_pr(struct kvm *kvm, unsigned long hva)
305 {
306 /* XXX could be more clever ;) */
307 return 0;
308 }
309
310 static void kvm_set_spte_hva_pr(struct kvm *kvm, unsigned long hva, pte_t pte)
311 {
312 /* The page will get remapped properly on its next fault */
313 do_kvm_unmap_hva(kvm, hva, hva + PAGE_SIZE);
314 }
315
316 /*****************************************/
317
318 static void kvmppc_recalc_shadow_msr(struct kvm_vcpu *vcpu)
319 {
320 ulong guest_msr = kvmppc_get_msr(vcpu);
321 ulong smsr = guest_msr;
322
323 /* Guest MSR values */
324 smsr &= MSR_FE0 | MSR_FE1 | MSR_SF | MSR_SE | MSR_BE | MSR_LE;
325 /* Process MSR values */
326 smsr |= MSR_ME | MSR_RI | MSR_IR | MSR_DR | MSR_PR | MSR_EE;
327 /* External providers the guest reserved */
328 smsr |= (guest_msr & vcpu->arch.guest_owned_ext);
329 /* 64-bit Process MSR values */
330 #ifdef CONFIG_PPC_BOOK3S_64
331 smsr |= MSR_ISF | MSR_HV;
332 #endif
333 vcpu->arch.shadow_msr = smsr;
334 }
335
336 static void kvmppc_set_msr_pr(struct kvm_vcpu *vcpu, u64 msr)
337 {
338 ulong old_msr = kvmppc_get_msr(vcpu);
339
340 #ifdef EXIT_DEBUG
341 printk(KERN_INFO "KVM: Set MSR to 0x%llx\n", msr);
342 #endif
343
344 msr &= to_book3s(vcpu)->msr_mask;
345 kvmppc_set_msr_fast(vcpu, msr);
346 kvmppc_recalc_shadow_msr(vcpu);
347
348 if (msr & MSR_POW) {
349 if (!vcpu->arch.pending_exceptions) {
350 kvm_vcpu_block(vcpu);
351 kvm_clear_request(KVM_REQ_UNHALT, vcpu);
352 vcpu->stat.halt_wakeup++;
353
354 /* Unset POW bit after we woke up */
355 msr &= ~MSR_POW;
356 kvmppc_set_msr_fast(vcpu, msr);
357 }
358 }
359
360 if (kvmppc_is_split_real(vcpu))
361 kvmppc_fixup_split_real(vcpu);
362 else
363 kvmppc_unfixup_split_real(vcpu);
364
365 if ((kvmppc_get_msr(vcpu) & (MSR_PR|MSR_IR|MSR_DR)) !=
366 (old_msr & (MSR_PR|MSR_IR|MSR_DR))) {
367 kvmppc_mmu_flush_segments(vcpu);
368 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
369
370 /* Preload magic page segment when in kernel mode */
371 if (!(msr & MSR_PR) && vcpu->arch.magic_page_pa) {
372 struct kvm_vcpu_arch *a = &vcpu->arch;
373
374 if (msr & MSR_DR)
375 kvmppc_mmu_map_segment(vcpu, a->magic_page_ea);
376 else
377 kvmppc_mmu_map_segment(vcpu, a->magic_page_pa);
378 }
379 }
380
381 /*
382 * When switching from 32 to 64-bit, we may have a stale 32-bit
383 * magic page around, we need to flush it. Typically 32-bit magic
384 * page will be instanciated when calling into RTAS. Note: We
385 * assume that such transition only happens while in kernel mode,
386 * ie, we never transition from user 32-bit to kernel 64-bit with
387 * a 32-bit magic page around.
388 */
389 if (vcpu->arch.magic_page_pa &&
390 !(old_msr & MSR_PR) && !(old_msr & MSR_SF) && (msr & MSR_SF)) {
391 /* going from RTAS to normal kernel code */
392 kvmppc_mmu_pte_flush(vcpu, (uint32_t)vcpu->arch.magic_page_pa,
393 ~0xFFFUL);
394 }
395
396 /* Preload FPU if it's enabled */
397 if (kvmppc_get_msr(vcpu) & MSR_FP)
398 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP);
399 }
400
401 void kvmppc_set_pvr_pr(struct kvm_vcpu *vcpu, u32 pvr)
402 {
403 u32 host_pvr;
404
405 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SLB;
406 vcpu->arch.pvr = pvr;
407 #ifdef CONFIG_PPC_BOOK3S_64
408 if ((pvr >= 0x330000) && (pvr < 0x70330000)) {
409 kvmppc_mmu_book3s_64_init(vcpu);
410 if (!to_book3s(vcpu)->hior_explicit)
411 to_book3s(vcpu)->hior = 0xfff00000;
412 to_book3s(vcpu)->msr_mask = 0xffffffffffffffffULL;
413 vcpu->arch.cpu_type = KVM_CPU_3S_64;
414 } else
415 #endif
416 {
417 kvmppc_mmu_book3s_32_init(vcpu);
418 if (!to_book3s(vcpu)->hior_explicit)
419 to_book3s(vcpu)->hior = 0;
420 to_book3s(vcpu)->msr_mask = 0xffffffffULL;
421 vcpu->arch.cpu_type = KVM_CPU_3S_32;
422 }
423
424 kvmppc_sanity_check(vcpu);
425
426 /* If we are in hypervisor level on 970, we can tell the CPU to
427 * treat DCBZ as 32 bytes store */
428 vcpu->arch.hflags &= ~BOOK3S_HFLAG_DCBZ32;
429 if (vcpu->arch.mmu.is_dcbz32(vcpu) && (mfmsr() & MSR_HV) &&
430 !strcmp(cur_cpu_spec->platform, "ppc970"))
431 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
432
433 /* Cell performs badly if MSR_FEx are set. So let's hope nobody
434 really needs them in a VM on Cell and force disable them. */
435 if (!strcmp(cur_cpu_spec->platform, "ppc-cell-be"))
436 to_book3s(vcpu)->msr_mask &= ~(MSR_FE0 | MSR_FE1);
437
438 /*
439 * If they're asking for POWER6 or later, set the flag
440 * indicating that we can do multiple large page sizes
441 * and 1TB segments.
442 * Also set the flag that indicates that tlbie has the large
443 * page bit in the RB operand instead of the instruction.
444 */
445 switch (PVR_VER(pvr)) {
446 case PVR_POWER6:
447 case PVR_POWER7:
448 case PVR_POWER7p:
449 case PVR_POWER8:
450 case PVR_POWER8E:
451 case PVR_POWER8NVL:
452 vcpu->arch.hflags |= BOOK3S_HFLAG_MULTI_PGSIZE |
453 BOOK3S_HFLAG_NEW_TLBIE;
454 break;
455 }
456
457 #ifdef CONFIG_PPC_BOOK3S_32
458 /* 32 bit Book3S always has 32 byte dcbz */
459 vcpu->arch.hflags |= BOOK3S_HFLAG_DCBZ32;
460 #endif
461
462 /* On some CPUs we can execute paired single operations natively */
463 asm ( "mfpvr %0" : "=r"(host_pvr));
464 switch (host_pvr) {
465 case 0x00080200: /* lonestar 2.0 */
466 case 0x00088202: /* lonestar 2.2 */
467 case 0x70000100: /* gekko 1.0 */
468 case 0x00080100: /* gekko 2.0 */
469 case 0x00083203: /* gekko 2.3a */
470 case 0x00083213: /* gekko 2.3b */
471 case 0x00083204: /* gekko 2.4 */
472 case 0x00083214: /* gekko 2.4e (8SE) - retail HW2 */
473 case 0x00087200: /* broadway */
474 vcpu->arch.hflags |= BOOK3S_HFLAG_NATIVE_PS;
475 /* Enable HID2.PSE - in case we need it later */
476 mtspr(SPRN_HID2_GEKKO, mfspr(SPRN_HID2_GEKKO) | (1 << 29));
477 }
478 }
479
480 /* Book3s_32 CPUs always have 32 bytes cache line size, which Linux assumes. To
481 * make Book3s_32 Linux work on Book3s_64, we have to make sure we trap dcbz to
482 * emulate 32 bytes dcbz length.
483 *
484 * The Book3s_64 inventors also realized this case and implemented a special bit
485 * in the HID5 register, which is a hypervisor ressource. Thus we can't use it.
486 *
487 * My approach here is to patch the dcbz instruction on executing pages.
488 */
489 static void kvmppc_patch_dcbz(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte)
490 {
491 struct page *hpage;
492 u64 hpage_offset;
493 u32 *page;
494 int i;
495
496 hpage = gfn_to_page(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
497 if (is_error_page(hpage))
498 return;
499
500 hpage_offset = pte->raddr & ~PAGE_MASK;
501 hpage_offset &= ~0xFFFULL;
502 hpage_offset /= 4;
503
504 get_page(hpage);
505 page = kmap_atomic(hpage);
506
507 /* patch dcbz into reserved instruction, so we trap */
508 for (i=hpage_offset; i < hpage_offset + (HW_PAGE_SIZE / 4); i++)
509 if ((be32_to_cpu(page[i]) & 0xff0007ff) == INS_DCBZ)
510 page[i] &= cpu_to_be32(0xfffffff7);
511
512 kunmap_atomic(page);
513 put_page(hpage);
514 }
515
516 static bool kvmppc_visible_gpa(struct kvm_vcpu *vcpu, gpa_t gpa)
517 {
518 ulong mp_pa = vcpu->arch.magic_page_pa;
519
520 if (!(kvmppc_get_msr(vcpu) & MSR_SF))
521 mp_pa = (uint32_t)mp_pa;
522
523 gpa &= ~0xFFFULL;
524 if (unlikely(mp_pa) && unlikely((mp_pa & KVM_PAM) == (gpa & KVM_PAM))) {
525 return true;
526 }
527
528 return kvm_is_visible_gfn(vcpu->kvm, gpa >> PAGE_SHIFT);
529 }
530
531 int kvmppc_handle_pagefault(struct kvm_run *run, struct kvm_vcpu *vcpu,
532 ulong eaddr, int vec)
533 {
534 bool data = (vec == BOOK3S_INTERRUPT_DATA_STORAGE);
535 bool iswrite = false;
536 int r = RESUME_GUEST;
537 int relocated;
538 int page_found = 0;
539 struct kvmppc_pte pte = { 0 };
540 bool dr = (kvmppc_get_msr(vcpu) & MSR_DR) ? true : false;
541 bool ir = (kvmppc_get_msr(vcpu) & MSR_IR) ? true : false;
542 u64 vsid;
543
544 relocated = data ? dr : ir;
545 if (data && (vcpu->arch.fault_dsisr & DSISR_ISSTORE))
546 iswrite = true;
547
548 /* Resolve real address if translation turned on */
549 if (relocated) {
550 page_found = vcpu->arch.mmu.xlate(vcpu, eaddr, &pte, data, iswrite);
551 } else {
552 pte.may_execute = true;
553 pte.may_read = true;
554 pte.may_write = true;
555 pte.raddr = eaddr & KVM_PAM;
556 pte.eaddr = eaddr;
557 pte.vpage = eaddr >> 12;
558 pte.page_size = MMU_PAGE_64K;
559 pte.wimg = HPTE_R_M;
560 }
561
562 switch (kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) {
563 case 0:
564 pte.vpage |= ((u64)VSID_REAL << (SID_SHIFT - 12));
565 break;
566 case MSR_DR:
567 if (!data &&
568 (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
569 ((pte.raddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
570 pte.raddr &= ~SPLIT_HACK_MASK;
571 /* fall through */
572 case MSR_IR:
573 vcpu->arch.mmu.esid_to_vsid(vcpu, eaddr >> SID_SHIFT, &vsid);
574
575 if ((kvmppc_get_msr(vcpu) & (MSR_DR|MSR_IR)) == MSR_DR)
576 pte.vpage |= ((u64)VSID_REAL_DR << (SID_SHIFT - 12));
577 else
578 pte.vpage |= ((u64)VSID_REAL_IR << (SID_SHIFT - 12));
579 pte.vpage |= vsid;
580
581 if (vsid == -1)
582 page_found = -EINVAL;
583 break;
584 }
585
586 if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
587 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
588 /*
589 * If we do the dcbz hack, we have to NX on every execution,
590 * so we can patch the executing code. This renders our guest
591 * NX-less.
592 */
593 pte.may_execute = !data;
594 }
595
596 if (page_found == -ENOENT) {
597 /* Page not found in guest PTE entries */
598 u64 ssrr1 = vcpu->arch.shadow_srr1;
599 u64 msr = kvmppc_get_msr(vcpu);
600 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu));
601 kvmppc_set_dsisr(vcpu, vcpu->arch.fault_dsisr);
602 kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL));
603 kvmppc_book3s_queue_irqprio(vcpu, vec);
604 } else if (page_found == -EPERM) {
605 /* Storage protection */
606 u32 dsisr = vcpu->arch.fault_dsisr;
607 u64 ssrr1 = vcpu->arch.shadow_srr1;
608 u64 msr = kvmppc_get_msr(vcpu);
609 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu));
610 dsisr = (dsisr & ~DSISR_NOHPTE) | DSISR_PROTFAULT;
611 kvmppc_set_dsisr(vcpu, dsisr);
612 kvmppc_set_msr_fast(vcpu, msr | (ssrr1 & 0xf8000000ULL));
613 kvmppc_book3s_queue_irqprio(vcpu, vec);
614 } else if (page_found == -EINVAL) {
615 /* Page not found in guest SLB */
616 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu));
617 kvmppc_book3s_queue_irqprio(vcpu, vec + 0x80);
618 } else if (kvmppc_visible_gpa(vcpu, pte.raddr)) {
619 if (data && !(vcpu->arch.fault_dsisr & DSISR_NOHPTE)) {
620 /*
621 * There is already a host HPTE there, presumably
622 * a read-only one for a page the guest thinks
623 * is writable, so get rid of it first.
624 */
625 kvmppc_mmu_unmap_page(vcpu, &pte);
626 }
627 /* The guest's PTE is not mapped yet. Map on the host */
628 if (kvmppc_mmu_map_page(vcpu, &pte, iswrite) == -EIO) {
629 /* Exit KVM if mapping failed */
630 run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
631 return RESUME_HOST;
632 }
633 if (data)
634 vcpu->stat.sp_storage++;
635 else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
636 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32)))
637 kvmppc_patch_dcbz(vcpu, &pte);
638 } else {
639 /* MMIO */
640 vcpu->stat.mmio_exits++;
641 vcpu->arch.paddr_accessed = pte.raddr;
642 vcpu->arch.vaddr_accessed = pte.eaddr;
643 r = kvmppc_emulate_mmio(run, vcpu);
644 if ( r == RESUME_HOST_NV )
645 r = RESUME_HOST;
646 }
647
648 return r;
649 }
650
651 /* Give up external provider (FPU, Altivec, VSX) */
652 void kvmppc_giveup_ext(struct kvm_vcpu *vcpu, ulong msr)
653 {
654 struct thread_struct *t = &current->thread;
655
656 /*
657 * VSX instructions can access FP and vector registers, so if
658 * we are giving up VSX, make sure we give up FP and VMX as well.
659 */
660 if (msr & MSR_VSX)
661 msr |= MSR_FP | MSR_VEC;
662
663 msr &= vcpu->arch.guest_owned_ext;
664 if (!msr)
665 return;
666
667 #ifdef DEBUG_EXT
668 printk(KERN_INFO "Giving up ext 0x%lx\n", msr);
669 #endif
670
671 if (msr & MSR_FP) {
672 /*
673 * Note that on CPUs with VSX, giveup_fpu stores
674 * both the traditional FP registers and the added VSX
675 * registers into thread.fp_state.fpr[].
676 */
677 if (t->regs->msr & MSR_FP)
678 giveup_fpu(current);
679 t->fp_save_area = NULL;
680 }
681
682 #ifdef CONFIG_ALTIVEC
683 if (msr & MSR_VEC) {
684 if (current->thread.regs->msr & MSR_VEC)
685 giveup_altivec(current);
686 t->vr_save_area = NULL;
687 }
688 #endif
689
690 vcpu->arch.guest_owned_ext &= ~(msr | MSR_VSX);
691 kvmppc_recalc_shadow_msr(vcpu);
692 }
693
694 /* Give up facility (TAR / EBB / DSCR) */
695 static void kvmppc_giveup_fac(struct kvm_vcpu *vcpu, ulong fac)
696 {
697 #ifdef CONFIG_PPC_BOOK3S_64
698 if (!(vcpu->arch.shadow_fscr & (1ULL << fac))) {
699 /* Facility not available to the guest, ignore giveup request*/
700 return;
701 }
702
703 switch (fac) {
704 case FSCR_TAR_LG:
705 vcpu->arch.tar = mfspr(SPRN_TAR);
706 mtspr(SPRN_TAR, current->thread.tar);
707 vcpu->arch.shadow_fscr &= ~FSCR_TAR;
708 break;
709 }
710 #endif
711 }
712
713 /* Handle external providers (FPU, Altivec, VSX) */
714 static int kvmppc_handle_ext(struct kvm_vcpu *vcpu, unsigned int exit_nr,
715 ulong msr)
716 {
717 struct thread_struct *t = &current->thread;
718
719 /* When we have paired singles, we emulate in software */
720 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE)
721 return RESUME_GUEST;
722
723 if (!(kvmppc_get_msr(vcpu) & msr)) {
724 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
725 return RESUME_GUEST;
726 }
727
728 if (msr == MSR_VSX) {
729 /* No VSX? Give an illegal instruction interrupt */
730 #ifdef CONFIG_VSX
731 if (!cpu_has_feature(CPU_FTR_VSX))
732 #endif
733 {
734 kvmppc_core_queue_program(vcpu, SRR1_PROGILL);
735 return RESUME_GUEST;
736 }
737
738 /*
739 * We have to load up all the FP and VMX registers before
740 * we can let the guest use VSX instructions.
741 */
742 msr = MSR_FP | MSR_VEC | MSR_VSX;
743 }
744
745 /* See if we already own all the ext(s) needed */
746 msr &= ~vcpu->arch.guest_owned_ext;
747 if (!msr)
748 return RESUME_GUEST;
749
750 #ifdef DEBUG_EXT
751 printk(KERN_INFO "Loading up ext 0x%lx\n", msr);
752 #endif
753
754 if (msr & MSR_FP) {
755 preempt_disable();
756 enable_kernel_fp();
757 load_fp_state(&vcpu->arch.fp);
758 disable_kernel_fp();
759 t->fp_save_area = &vcpu->arch.fp;
760 preempt_enable();
761 }
762
763 if (msr & MSR_VEC) {
764 #ifdef CONFIG_ALTIVEC
765 preempt_disable();
766 enable_kernel_altivec();
767 load_vr_state(&vcpu->arch.vr);
768 disable_kernel_altivec();
769 t->vr_save_area = &vcpu->arch.vr;
770 preempt_enable();
771 #endif
772 }
773
774 t->regs->msr |= msr;
775 vcpu->arch.guest_owned_ext |= msr;
776 kvmppc_recalc_shadow_msr(vcpu);
777
778 return RESUME_GUEST;
779 }
780
781 /*
782 * Kernel code using FP or VMX could have flushed guest state to
783 * the thread_struct; if so, get it back now.
784 */
785 static void kvmppc_handle_lost_ext(struct kvm_vcpu *vcpu)
786 {
787 unsigned long lost_ext;
788
789 lost_ext = vcpu->arch.guest_owned_ext & ~current->thread.regs->msr;
790 if (!lost_ext)
791 return;
792
793 if (lost_ext & MSR_FP) {
794 preempt_disable();
795 enable_kernel_fp();
796 load_fp_state(&vcpu->arch.fp);
797 disable_kernel_fp();
798 preempt_enable();
799 }
800 #ifdef CONFIG_ALTIVEC
801 if (lost_ext & MSR_VEC) {
802 preempt_disable();
803 enable_kernel_altivec();
804 load_vr_state(&vcpu->arch.vr);
805 disable_kernel_altivec();
806 preempt_enable();
807 }
808 #endif
809 current->thread.regs->msr |= lost_ext;
810 }
811
812 #ifdef CONFIG_PPC_BOOK3S_64
813
814 static void kvmppc_trigger_fac_interrupt(struct kvm_vcpu *vcpu, ulong fac)
815 {
816 /* Inject the Interrupt Cause field and trigger a guest interrupt */
817 vcpu->arch.fscr &= ~(0xffULL << 56);
818 vcpu->arch.fscr |= (fac << 56);
819 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_FAC_UNAVAIL);
820 }
821
822 static void kvmppc_emulate_fac(struct kvm_vcpu *vcpu, ulong fac)
823 {
824 enum emulation_result er = EMULATE_FAIL;
825
826 if (!(kvmppc_get_msr(vcpu) & MSR_PR))
827 er = kvmppc_emulate_instruction(vcpu->run, vcpu);
828
829 if ((er != EMULATE_DONE) && (er != EMULATE_AGAIN)) {
830 /* Couldn't emulate, trigger interrupt in guest */
831 kvmppc_trigger_fac_interrupt(vcpu, fac);
832 }
833 }
834
835 /* Enable facilities (TAR, EBB, DSCR) for the guest */
836 static int kvmppc_handle_fac(struct kvm_vcpu *vcpu, ulong fac)
837 {
838 bool guest_fac_enabled;
839 BUG_ON(!cpu_has_feature(CPU_FTR_ARCH_207S));
840
841 /*
842 * Not every facility is enabled by FSCR bits, check whether the
843 * guest has this facility enabled at all.
844 */
845 switch (fac) {
846 case FSCR_TAR_LG:
847 case FSCR_EBB_LG:
848 guest_fac_enabled = (vcpu->arch.fscr & (1ULL << fac));
849 break;
850 case FSCR_TM_LG:
851 guest_fac_enabled = kvmppc_get_msr(vcpu) & MSR_TM;
852 break;
853 default:
854 guest_fac_enabled = false;
855 break;
856 }
857
858 if (!guest_fac_enabled) {
859 /* Facility not enabled by the guest */
860 kvmppc_trigger_fac_interrupt(vcpu, fac);
861 return RESUME_GUEST;
862 }
863
864 switch (fac) {
865 case FSCR_TAR_LG:
866 /* TAR switching isn't lazy in Linux yet */
867 current->thread.tar = mfspr(SPRN_TAR);
868 mtspr(SPRN_TAR, vcpu->arch.tar);
869 vcpu->arch.shadow_fscr |= FSCR_TAR;
870 break;
871 default:
872 kvmppc_emulate_fac(vcpu, fac);
873 break;
874 }
875
876 return RESUME_GUEST;
877 }
878
879 void kvmppc_set_fscr(struct kvm_vcpu *vcpu, u64 fscr)
880 {
881 if ((vcpu->arch.fscr & FSCR_TAR) && !(fscr & FSCR_TAR)) {
882 /* TAR got dropped, drop it in shadow too */
883 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
884 }
885 vcpu->arch.fscr = fscr;
886 }
887 #endif
888
889 static void kvmppc_setup_debug(struct kvm_vcpu *vcpu)
890 {
891 if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
892 u64 msr = kvmppc_get_msr(vcpu);
893
894 kvmppc_set_msr(vcpu, msr | MSR_SE);
895 }
896 }
897
898 static void kvmppc_clear_debug(struct kvm_vcpu *vcpu)
899 {
900 if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
901 u64 msr = kvmppc_get_msr(vcpu);
902
903 kvmppc_set_msr(vcpu, msr & ~MSR_SE);
904 }
905 }
906
907 static int kvmppc_exit_pr_progint(struct kvm_run *run, struct kvm_vcpu *vcpu,
908 unsigned int exit_nr)
909 {
910 enum emulation_result er;
911 ulong flags;
912 u32 last_inst;
913 int emul, r;
914
915 /*
916 * shadow_srr1 only contains valid flags if we came here via a program
917 * exception. The other exceptions (emulation assist, FP unavailable,
918 * etc.) do not provide flags in SRR1, so use an illegal-instruction
919 * exception when injecting a program interrupt into the guest.
920 */
921 if (exit_nr == BOOK3S_INTERRUPT_PROGRAM)
922 flags = vcpu->arch.shadow_srr1 & 0x1f0000ull;
923 else
924 flags = SRR1_PROGILL;
925
926 emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
927 if (emul != EMULATE_DONE)
928 return RESUME_GUEST;
929
930 if (kvmppc_get_msr(vcpu) & MSR_PR) {
931 #ifdef EXIT_DEBUG
932 pr_info("Userspace triggered 0x700 exception at\n 0x%lx (0x%x)\n",
933 kvmppc_get_pc(vcpu), last_inst);
934 #endif
935 if ((last_inst & 0xff0007ff) != (INS_DCBZ & 0xfffffff7)) {
936 kvmppc_core_queue_program(vcpu, flags);
937 return RESUME_GUEST;
938 }
939 }
940
941 vcpu->stat.emulated_inst_exits++;
942 er = kvmppc_emulate_instruction(run, vcpu);
943 switch (er) {
944 case EMULATE_DONE:
945 r = RESUME_GUEST_NV;
946 break;
947 case EMULATE_AGAIN:
948 r = RESUME_GUEST;
949 break;
950 case EMULATE_FAIL:
951 pr_crit("%s: emulation at %lx failed (%08x)\n",
952 __func__, kvmppc_get_pc(vcpu), last_inst);
953 kvmppc_core_queue_program(vcpu, flags);
954 r = RESUME_GUEST;
955 break;
956 case EMULATE_DO_MMIO:
957 run->exit_reason = KVM_EXIT_MMIO;
958 r = RESUME_HOST_NV;
959 break;
960 case EMULATE_EXIT_USER:
961 r = RESUME_HOST_NV;
962 break;
963 default:
964 BUG();
965 }
966
967 return r;
968 }
969
970 int kvmppc_handle_exit_pr(struct kvm_run *run, struct kvm_vcpu *vcpu,
971 unsigned int exit_nr)
972 {
973 int r = RESUME_HOST;
974 int s;
975
976 vcpu->stat.sum_exits++;
977
978 run->exit_reason = KVM_EXIT_UNKNOWN;
979 run->ready_for_interrupt_injection = 1;
980
981 /* We get here with MSR.EE=1 */
982
983 trace_kvm_exit(exit_nr, vcpu);
984 guest_exit();
985
986 switch (exit_nr) {
987 case BOOK3S_INTERRUPT_INST_STORAGE:
988 {
989 ulong shadow_srr1 = vcpu->arch.shadow_srr1;
990 vcpu->stat.pf_instruc++;
991
992 if (kvmppc_is_split_real(vcpu))
993 kvmppc_fixup_split_real(vcpu);
994
995 #ifdef CONFIG_PPC_BOOK3S_32
996 /* We set segments as unused segments when invalidating them. So
997 * treat the respective fault as segment fault. */
998 {
999 struct kvmppc_book3s_shadow_vcpu *svcpu;
1000 u32 sr;
1001
1002 svcpu = svcpu_get(vcpu);
1003 sr = svcpu->sr[kvmppc_get_pc(vcpu) >> SID_SHIFT];
1004 svcpu_put(svcpu);
1005 if (sr == SR_INVALID) {
1006 kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu));
1007 r = RESUME_GUEST;
1008 break;
1009 }
1010 }
1011 #endif
1012
1013 /* only care about PTEG not found errors, but leave NX alone */
1014 if (shadow_srr1 & 0x40000000) {
1015 int idx = srcu_read_lock(&vcpu->kvm->srcu);
1016 r = kvmppc_handle_pagefault(run, vcpu, kvmppc_get_pc(vcpu), exit_nr);
1017 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1018 vcpu->stat.sp_instruc++;
1019 } else if (vcpu->arch.mmu.is_dcbz32(vcpu) &&
1020 (!(vcpu->arch.hflags & BOOK3S_HFLAG_DCBZ32))) {
1021 /*
1022 * XXX If we do the dcbz hack we use the NX bit to flush&patch the page,
1023 * so we can't use the NX bit inside the guest. Let's cross our fingers,
1024 * that no guest that needs the dcbz hack does NX.
1025 */
1026 kvmppc_mmu_pte_flush(vcpu, kvmppc_get_pc(vcpu), ~0xFFFUL);
1027 r = RESUME_GUEST;
1028 } else {
1029 u64 msr = kvmppc_get_msr(vcpu);
1030 msr |= shadow_srr1 & 0x58000000;
1031 kvmppc_set_msr_fast(vcpu, msr);
1032 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1033 r = RESUME_GUEST;
1034 }
1035 break;
1036 }
1037 case BOOK3S_INTERRUPT_DATA_STORAGE:
1038 {
1039 ulong dar = kvmppc_get_fault_dar(vcpu);
1040 u32 fault_dsisr = vcpu->arch.fault_dsisr;
1041 vcpu->stat.pf_storage++;
1042
1043 #ifdef CONFIG_PPC_BOOK3S_32
1044 /* We set segments as unused segments when invalidating them. So
1045 * treat the respective fault as segment fault. */
1046 {
1047 struct kvmppc_book3s_shadow_vcpu *svcpu;
1048 u32 sr;
1049
1050 svcpu = svcpu_get(vcpu);
1051 sr = svcpu->sr[dar >> SID_SHIFT];
1052 svcpu_put(svcpu);
1053 if (sr == SR_INVALID) {
1054 kvmppc_mmu_map_segment(vcpu, dar);
1055 r = RESUME_GUEST;
1056 break;
1057 }
1058 }
1059 #endif
1060
1061 /*
1062 * We need to handle missing shadow PTEs, and
1063 * protection faults due to us mapping a page read-only
1064 * when the guest thinks it is writable.
1065 */
1066 if (fault_dsisr & (DSISR_NOHPTE | DSISR_PROTFAULT)) {
1067 int idx = srcu_read_lock(&vcpu->kvm->srcu);
1068 r = kvmppc_handle_pagefault(run, vcpu, dar, exit_nr);
1069 srcu_read_unlock(&vcpu->kvm->srcu, idx);
1070 } else {
1071 kvmppc_set_dar(vcpu, dar);
1072 kvmppc_set_dsisr(vcpu, fault_dsisr);
1073 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1074 r = RESUME_GUEST;
1075 }
1076 break;
1077 }
1078 case BOOK3S_INTERRUPT_DATA_SEGMENT:
1079 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_fault_dar(vcpu)) < 0) {
1080 kvmppc_set_dar(vcpu, kvmppc_get_fault_dar(vcpu));
1081 kvmppc_book3s_queue_irqprio(vcpu,
1082 BOOK3S_INTERRUPT_DATA_SEGMENT);
1083 }
1084 r = RESUME_GUEST;
1085 break;
1086 case BOOK3S_INTERRUPT_INST_SEGMENT:
1087 if (kvmppc_mmu_map_segment(vcpu, kvmppc_get_pc(vcpu)) < 0) {
1088 kvmppc_book3s_queue_irqprio(vcpu,
1089 BOOK3S_INTERRUPT_INST_SEGMENT);
1090 }
1091 r = RESUME_GUEST;
1092 break;
1093 /* We're good on these - the host merely wanted to get our attention */
1094 case BOOK3S_INTERRUPT_DECREMENTER:
1095 case BOOK3S_INTERRUPT_HV_DECREMENTER:
1096 case BOOK3S_INTERRUPT_DOORBELL:
1097 case BOOK3S_INTERRUPT_H_DOORBELL:
1098 vcpu->stat.dec_exits++;
1099 r = RESUME_GUEST;
1100 break;
1101 case BOOK3S_INTERRUPT_EXTERNAL:
1102 case BOOK3S_INTERRUPT_EXTERNAL_LEVEL:
1103 case BOOK3S_INTERRUPT_EXTERNAL_HV:
1104 vcpu->stat.ext_intr_exits++;
1105 r = RESUME_GUEST;
1106 break;
1107 case BOOK3S_INTERRUPT_PERFMON:
1108 r = RESUME_GUEST;
1109 break;
1110 case BOOK3S_INTERRUPT_PROGRAM:
1111 case BOOK3S_INTERRUPT_H_EMUL_ASSIST:
1112 r = kvmppc_exit_pr_progint(run, vcpu, exit_nr);
1113 break;
1114 case BOOK3S_INTERRUPT_SYSCALL:
1115 {
1116 u32 last_sc;
1117 int emul;
1118
1119 /* Get last sc for papr */
1120 if (vcpu->arch.papr_enabled) {
1121 /* The sc instuction points SRR0 to the next inst */
1122 emul = kvmppc_get_last_inst(vcpu, INST_SC, &last_sc);
1123 if (emul != EMULATE_DONE) {
1124 kvmppc_set_pc(vcpu, kvmppc_get_pc(vcpu) - 4);
1125 r = RESUME_GUEST;
1126 break;
1127 }
1128 }
1129
1130 if (vcpu->arch.papr_enabled &&
1131 (last_sc == 0x44000022) &&
1132 !(kvmppc_get_msr(vcpu) & MSR_PR)) {
1133 /* SC 1 papr hypercalls */
1134 ulong cmd = kvmppc_get_gpr(vcpu, 3);
1135 int i;
1136
1137 #ifdef CONFIG_PPC_BOOK3S_64
1138 if (kvmppc_h_pr(vcpu, cmd) == EMULATE_DONE) {
1139 r = RESUME_GUEST;
1140 break;
1141 }
1142 #endif
1143
1144 run->papr_hcall.nr = cmd;
1145 for (i = 0; i < 9; ++i) {
1146 ulong gpr = kvmppc_get_gpr(vcpu, 4 + i);
1147 run->papr_hcall.args[i] = gpr;
1148 }
1149 run->exit_reason = KVM_EXIT_PAPR_HCALL;
1150 vcpu->arch.hcall_needed = 1;
1151 r = RESUME_HOST;
1152 } else if (vcpu->arch.osi_enabled &&
1153 (((u32)kvmppc_get_gpr(vcpu, 3)) == OSI_SC_MAGIC_R3) &&
1154 (((u32)kvmppc_get_gpr(vcpu, 4)) == OSI_SC_MAGIC_R4)) {
1155 /* MOL hypercalls */
1156 u64 *gprs = run->osi.gprs;
1157 int i;
1158
1159 run->exit_reason = KVM_EXIT_OSI;
1160 for (i = 0; i < 32; i++)
1161 gprs[i] = kvmppc_get_gpr(vcpu, i);
1162 vcpu->arch.osi_needed = 1;
1163 r = RESUME_HOST_NV;
1164 } else if (!(kvmppc_get_msr(vcpu) & MSR_PR) &&
1165 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
1166 /* KVM PV hypercalls */
1167 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
1168 r = RESUME_GUEST;
1169 } else {
1170 /* Guest syscalls */
1171 vcpu->stat.syscall_exits++;
1172 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1173 r = RESUME_GUEST;
1174 }
1175 break;
1176 }
1177 case BOOK3S_INTERRUPT_FP_UNAVAIL:
1178 case BOOK3S_INTERRUPT_ALTIVEC:
1179 case BOOK3S_INTERRUPT_VSX:
1180 {
1181 int ext_msr = 0;
1182 int emul;
1183 u32 last_inst;
1184
1185 if (vcpu->arch.hflags & BOOK3S_HFLAG_PAIRED_SINGLE) {
1186 /* Do paired single instruction emulation */
1187 emul = kvmppc_get_last_inst(vcpu, INST_GENERIC,
1188 &last_inst);
1189 if (emul == EMULATE_DONE)
1190 r = kvmppc_exit_pr_progint(run, vcpu, exit_nr);
1191 else
1192 r = RESUME_GUEST;
1193
1194 break;
1195 }
1196
1197 /* Enable external provider */
1198 switch (exit_nr) {
1199 case BOOK3S_INTERRUPT_FP_UNAVAIL:
1200 ext_msr = MSR_FP;
1201 break;
1202
1203 case BOOK3S_INTERRUPT_ALTIVEC:
1204 ext_msr = MSR_VEC;
1205 break;
1206
1207 case BOOK3S_INTERRUPT_VSX:
1208 ext_msr = MSR_VSX;
1209 break;
1210 }
1211
1212 r = kvmppc_handle_ext(vcpu, exit_nr, ext_msr);
1213 break;
1214 }
1215 case BOOK3S_INTERRUPT_ALIGNMENT:
1216 {
1217 u32 last_inst;
1218 int emul = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
1219
1220 if (emul == EMULATE_DONE) {
1221 u32 dsisr;
1222 u64 dar;
1223
1224 dsisr = kvmppc_alignment_dsisr(vcpu, last_inst);
1225 dar = kvmppc_alignment_dar(vcpu, last_inst);
1226
1227 kvmppc_set_dsisr(vcpu, dsisr);
1228 kvmppc_set_dar(vcpu, dar);
1229
1230 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1231 }
1232 r = RESUME_GUEST;
1233 break;
1234 }
1235 #ifdef CONFIG_PPC_BOOK3S_64
1236 case BOOK3S_INTERRUPT_FAC_UNAVAIL:
1237 kvmppc_handle_fac(vcpu, vcpu->arch.shadow_fscr >> 56);
1238 r = RESUME_GUEST;
1239 break;
1240 #endif
1241 case BOOK3S_INTERRUPT_MACHINE_CHECK:
1242 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1243 r = RESUME_GUEST;
1244 break;
1245 case BOOK3S_INTERRUPT_TRACE:
1246 if (vcpu->guest_debug & KVM_GUESTDBG_SINGLESTEP) {
1247 run->exit_reason = KVM_EXIT_DEBUG;
1248 r = RESUME_HOST;
1249 } else {
1250 kvmppc_book3s_queue_irqprio(vcpu, exit_nr);
1251 r = RESUME_GUEST;
1252 }
1253 break;
1254 default:
1255 {
1256 ulong shadow_srr1 = vcpu->arch.shadow_srr1;
1257 /* Ugh - bork here! What did we get? */
1258 printk(KERN_EMERG "exit_nr=0x%x | pc=0x%lx | msr=0x%lx\n",
1259 exit_nr, kvmppc_get_pc(vcpu), shadow_srr1);
1260 r = RESUME_HOST;
1261 BUG();
1262 break;
1263 }
1264 }
1265
1266 if (!(r & RESUME_HOST)) {
1267 /* To avoid clobbering exit_reason, only check for signals if
1268 * we aren't already exiting to userspace for some other
1269 * reason. */
1270
1271 /*
1272 * Interrupts could be timers for the guest which we have to
1273 * inject again, so let's postpone them until we're in the guest
1274 * and if we really did time things so badly, then we just exit
1275 * again due to a host external interrupt.
1276 */
1277 s = kvmppc_prepare_to_enter(vcpu);
1278 if (s <= 0)
1279 r = s;
1280 else {
1281 /* interrupts now hard-disabled */
1282 kvmppc_fix_ee_before_entry();
1283 }
1284
1285 kvmppc_handle_lost_ext(vcpu);
1286 }
1287
1288 trace_kvm_book3s_reenter(r, vcpu);
1289
1290 return r;
1291 }
1292
1293 static int kvm_arch_vcpu_ioctl_get_sregs_pr(struct kvm_vcpu *vcpu,
1294 struct kvm_sregs *sregs)
1295 {
1296 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
1297 int i;
1298
1299 sregs->pvr = vcpu->arch.pvr;
1300
1301 sregs->u.s.sdr1 = to_book3s(vcpu)->sdr1;
1302 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
1303 for (i = 0; i < 64; i++) {
1304 sregs->u.s.ppc64.slb[i].slbe = vcpu->arch.slb[i].orige | i;
1305 sregs->u.s.ppc64.slb[i].slbv = vcpu->arch.slb[i].origv;
1306 }
1307 } else {
1308 for (i = 0; i < 16; i++)
1309 sregs->u.s.ppc32.sr[i] = kvmppc_get_sr(vcpu, i);
1310
1311 for (i = 0; i < 8; i++) {
1312 sregs->u.s.ppc32.ibat[i] = vcpu3s->ibat[i].raw;
1313 sregs->u.s.ppc32.dbat[i] = vcpu3s->dbat[i].raw;
1314 }
1315 }
1316
1317 return 0;
1318 }
1319
1320 static int kvm_arch_vcpu_ioctl_set_sregs_pr(struct kvm_vcpu *vcpu,
1321 struct kvm_sregs *sregs)
1322 {
1323 struct kvmppc_vcpu_book3s *vcpu3s = to_book3s(vcpu);
1324 int i;
1325
1326 kvmppc_set_pvr_pr(vcpu, sregs->pvr);
1327
1328 vcpu3s->sdr1 = sregs->u.s.sdr1;
1329 #ifdef CONFIG_PPC_BOOK3S_64
1330 if (vcpu->arch.hflags & BOOK3S_HFLAG_SLB) {
1331 /* Flush all SLB entries */
1332 vcpu->arch.mmu.slbmte(vcpu, 0, 0);
1333 vcpu->arch.mmu.slbia(vcpu);
1334
1335 for (i = 0; i < 64; i++) {
1336 u64 rb = sregs->u.s.ppc64.slb[i].slbe;
1337 u64 rs = sregs->u.s.ppc64.slb[i].slbv;
1338
1339 if (rb & SLB_ESID_V)
1340 vcpu->arch.mmu.slbmte(vcpu, rs, rb);
1341 }
1342 } else
1343 #endif
1344 {
1345 for (i = 0; i < 16; i++) {
1346 vcpu->arch.mmu.mtsrin(vcpu, i, sregs->u.s.ppc32.sr[i]);
1347 }
1348 for (i = 0; i < 8; i++) {
1349 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), false,
1350 (u32)sregs->u.s.ppc32.ibat[i]);
1351 kvmppc_set_bat(vcpu, &(vcpu3s->ibat[i]), true,
1352 (u32)(sregs->u.s.ppc32.ibat[i] >> 32));
1353 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), false,
1354 (u32)sregs->u.s.ppc32.dbat[i]);
1355 kvmppc_set_bat(vcpu, &(vcpu3s->dbat[i]), true,
1356 (u32)(sregs->u.s.ppc32.dbat[i] >> 32));
1357 }
1358 }
1359
1360 /* Flush the MMU after messing with the segments */
1361 kvmppc_mmu_pte_flush(vcpu, 0, 0);
1362
1363 return 0;
1364 }
1365
1366 static int kvmppc_get_one_reg_pr(struct kvm_vcpu *vcpu, u64 id,
1367 union kvmppc_one_reg *val)
1368 {
1369 int r = 0;
1370
1371 switch (id) {
1372 case KVM_REG_PPC_DEBUG_INST:
1373 *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT);
1374 break;
1375 case KVM_REG_PPC_HIOR:
1376 *val = get_reg_val(id, to_book3s(vcpu)->hior);
1377 break;
1378 case KVM_REG_PPC_VTB:
1379 *val = get_reg_val(id, to_book3s(vcpu)->vtb);
1380 break;
1381 case KVM_REG_PPC_LPCR:
1382 case KVM_REG_PPC_LPCR_64:
1383 /*
1384 * We are only interested in the LPCR_ILE bit
1385 */
1386 if (vcpu->arch.intr_msr & MSR_LE)
1387 *val = get_reg_val(id, LPCR_ILE);
1388 else
1389 *val = get_reg_val(id, 0);
1390 break;
1391 default:
1392 r = -EINVAL;
1393 break;
1394 }
1395
1396 return r;
1397 }
1398
1399 static void kvmppc_set_lpcr_pr(struct kvm_vcpu *vcpu, u64 new_lpcr)
1400 {
1401 if (new_lpcr & LPCR_ILE)
1402 vcpu->arch.intr_msr |= MSR_LE;
1403 else
1404 vcpu->arch.intr_msr &= ~MSR_LE;
1405 }
1406
1407 static int kvmppc_set_one_reg_pr(struct kvm_vcpu *vcpu, u64 id,
1408 union kvmppc_one_reg *val)
1409 {
1410 int r = 0;
1411
1412 switch (id) {
1413 case KVM_REG_PPC_HIOR:
1414 to_book3s(vcpu)->hior = set_reg_val(id, *val);
1415 to_book3s(vcpu)->hior_explicit = true;
1416 break;
1417 case KVM_REG_PPC_VTB:
1418 to_book3s(vcpu)->vtb = set_reg_val(id, *val);
1419 break;
1420 case KVM_REG_PPC_LPCR:
1421 case KVM_REG_PPC_LPCR_64:
1422 kvmppc_set_lpcr_pr(vcpu, set_reg_val(id, *val));
1423 break;
1424 default:
1425 r = -EINVAL;
1426 break;
1427 }
1428
1429 return r;
1430 }
1431
1432 static struct kvm_vcpu *kvmppc_core_vcpu_create_pr(struct kvm *kvm,
1433 unsigned int id)
1434 {
1435 struct kvmppc_vcpu_book3s *vcpu_book3s;
1436 struct kvm_vcpu *vcpu;
1437 int err = -ENOMEM;
1438 unsigned long p;
1439
1440 vcpu = kmem_cache_zalloc(kvm_vcpu_cache, GFP_KERNEL);
1441 if (!vcpu)
1442 goto out;
1443
1444 vcpu_book3s = vzalloc(sizeof(struct kvmppc_vcpu_book3s));
1445 if (!vcpu_book3s)
1446 goto free_vcpu;
1447 vcpu->arch.book3s = vcpu_book3s;
1448
1449 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1450 vcpu->arch.shadow_vcpu =
1451 kzalloc(sizeof(*vcpu->arch.shadow_vcpu), GFP_KERNEL);
1452 if (!vcpu->arch.shadow_vcpu)
1453 goto free_vcpu3s;
1454 #endif
1455
1456 err = kvm_vcpu_init(vcpu, kvm, id);
1457 if (err)
1458 goto free_shadow_vcpu;
1459
1460 err = -ENOMEM;
1461 p = __get_free_page(GFP_KERNEL|__GFP_ZERO);
1462 if (!p)
1463 goto uninit_vcpu;
1464 vcpu->arch.shared = (void *)p;
1465 #ifdef CONFIG_PPC_BOOK3S_64
1466 /* Always start the shared struct in native endian mode */
1467 #ifdef __BIG_ENDIAN__
1468 vcpu->arch.shared_big_endian = true;
1469 #else
1470 vcpu->arch.shared_big_endian = false;
1471 #endif
1472
1473 /*
1474 * Default to the same as the host if we're on sufficiently
1475 * recent machine that we have 1TB segments;
1476 * otherwise default to PPC970FX.
1477 */
1478 vcpu->arch.pvr = 0x3C0301;
1479 if (mmu_has_feature(MMU_FTR_1T_SEGMENT))
1480 vcpu->arch.pvr = mfspr(SPRN_PVR);
1481 vcpu->arch.intr_msr = MSR_SF;
1482 #else
1483 /* default to book3s_32 (750) */
1484 vcpu->arch.pvr = 0x84202;
1485 #endif
1486 kvmppc_set_pvr_pr(vcpu, vcpu->arch.pvr);
1487 vcpu->arch.slb_nr = 64;
1488
1489 vcpu->arch.shadow_msr = MSR_USER64 & ~MSR_LE;
1490
1491 err = kvmppc_mmu_init(vcpu);
1492 if (err < 0)
1493 goto uninit_vcpu;
1494
1495 return vcpu;
1496
1497 uninit_vcpu:
1498 kvm_vcpu_uninit(vcpu);
1499 free_shadow_vcpu:
1500 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1501 kfree(vcpu->arch.shadow_vcpu);
1502 free_vcpu3s:
1503 #endif
1504 vfree(vcpu_book3s);
1505 free_vcpu:
1506 kmem_cache_free(kvm_vcpu_cache, vcpu);
1507 out:
1508 return ERR_PTR(err);
1509 }
1510
1511 static void kvmppc_core_vcpu_free_pr(struct kvm_vcpu *vcpu)
1512 {
1513 struct kvmppc_vcpu_book3s *vcpu_book3s = to_book3s(vcpu);
1514
1515 free_page((unsigned long)vcpu->arch.shared & PAGE_MASK);
1516 kvm_vcpu_uninit(vcpu);
1517 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
1518 kfree(vcpu->arch.shadow_vcpu);
1519 #endif
1520 vfree(vcpu_book3s);
1521 kmem_cache_free(kvm_vcpu_cache, vcpu);
1522 }
1523
1524 static int kvmppc_vcpu_run_pr(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
1525 {
1526 int ret;
1527 #ifdef CONFIG_ALTIVEC
1528 unsigned long uninitialized_var(vrsave);
1529 #endif
1530
1531 /* Check if we can run the vcpu at all */
1532 if (!vcpu->arch.sane) {
1533 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
1534 ret = -EINVAL;
1535 goto out;
1536 }
1537
1538 kvmppc_setup_debug(vcpu);
1539
1540 /*
1541 * Interrupts could be timers for the guest which we have to inject
1542 * again, so let's postpone them until we're in the guest and if we
1543 * really did time things so badly, then we just exit again due to
1544 * a host external interrupt.
1545 */
1546 ret = kvmppc_prepare_to_enter(vcpu);
1547 if (ret <= 0)
1548 goto out;
1549 /* interrupts now hard-disabled */
1550
1551 /* Save FPU, Altivec and VSX state */
1552 giveup_all(current);
1553
1554 /* Preload FPU if it's enabled */
1555 if (kvmppc_get_msr(vcpu) & MSR_FP)
1556 kvmppc_handle_ext(vcpu, BOOK3S_INTERRUPT_FP_UNAVAIL, MSR_FP);
1557
1558 kvmppc_fix_ee_before_entry();
1559
1560 ret = __kvmppc_vcpu_run(kvm_run, vcpu);
1561
1562 kvmppc_clear_debug(vcpu);
1563
1564 /* No need for guest_exit. It's done in handle_exit.
1565 We also get here with interrupts enabled. */
1566
1567 /* Make sure we save the guest FPU/Altivec/VSX state */
1568 kvmppc_giveup_ext(vcpu, MSR_FP | MSR_VEC | MSR_VSX);
1569
1570 /* Make sure we save the guest TAR/EBB/DSCR state */
1571 kvmppc_giveup_fac(vcpu, FSCR_TAR_LG);
1572
1573 out:
1574 vcpu->mode = OUTSIDE_GUEST_MODE;
1575 return ret;
1576 }
1577
1578 /*
1579 * Get (and clear) the dirty memory log for a memory slot.
1580 */
1581 static int kvm_vm_ioctl_get_dirty_log_pr(struct kvm *kvm,
1582 struct kvm_dirty_log *log)
1583 {
1584 struct kvm_memslots *slots;
1585 struct kvm_memory_slot *memslot;
1586 struct kvm_vcpu *vcpu;
1587 ulong ga, ga_end;
1588 int is_dirty = 0;
1589 int r;
1590 unsigned long n;
1591
1592 mutex_lock(&kvm->slots_lock);
1593
1594 r = kvm_get_dirty_log(kvm, log, &is_dirty);
1595 if (r)
1596 goto out;
1597
1598 /* If nothing is dirty, don't bother messing with page tables. */
1599 if (is_dirty) {
1600 slots = kvm_memslots(kvm);
1601 memslot = id_to_memslot(slots, log->slot);
1602
1603 ga = memslot->base_gfn << PAGE_SHIFT;
1604 ga_end = ga + (memslot->npages << PAGE_SHIFT);
1605
1606 kvm_for_each_vcpu(n, vcpu, kvm)
1607 kvmppc_mmu_pte_pflush(vcpu, ga, ga_end);
1608
1609 n = kvm_dirty_bitmap_bytes(memslot);
1610 memset(memslot->dirty_bitmap, 0, n);
1611 }
1612
1613 r = 0;
1614 out:
1615 mutex_unlock(&kvm->slots_lock);
1616 return r;
1617 }
1618
1619 static void kvmppc_core_flush_memslot_pr(struct kvm *kvm,
1620 struct kvm_memory_slot *memslot)
1621 {
1622 return;
1623 }
1624
1625 static int kvmppc_core_prepare_memory_region_pr(struct kvm *kvm,
1626 struct kvm_memory_slot *memslot,
1627 const struct kvm_userspace_memory_region *mem)
1628 {
1629 return 0;
1630 }
1631
1632 static void kvmppc_core_commit_memory_region_pr(struct kvm *kvm,
1633 const struct kvm_userspace_memory_region *mem,
1634 const struct kvm_memory_slot *old,
1635 const struct kvm_memory_slot *new)
1636 {
1637 return;
1638 }
1639
1640 static void kvmppc_core_free_memslot_pr(struct kvm_memory_slot *free,
1641 struct kvm_memory_slot *dont)
1642 {
1643 return;
1644 }
1645
1646 static int kvmppc_core_create_memslot_pr(struct kvm_memory_slot *slot,
1647 unsigned long npages)
1648 {
1649 return 0;
1650 }
1651
1652
1653 #ifdef CONFIG_PPC64
1654 static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm,
1655 struct kvm_ppc_smmu_info *info)
1656 {
1657 long int i;
1658 struct kvm_vcpu *vcpu;
1659
1660 info->flags = 0;
1661
1662 /* SLB is always 64 entries */
1663 info->slb_size = 64;
1664
1665 /* Standard 4k base page size segment */
1666 info->sps[0].page_shift = 12;
1667 info->sps[0].slb_enc = 0;
1668 info->sps[0].enc[0].page_shift = 12;
1669 info->sps[0].enc[0].pte_enc = 0;
1670
1671 /*
1672 * 64k large page size.
1673 * We only want to put this in if the CPUs we're emulating
1674 * support it, but unfortunately we don't have a vcpu easily
1675 * to hand here to test. Just pick the first vcpu, and if
1676 * that doesn't exist yet, report the minimum capability,
1677 * i.e., no 64k pages.
1678 * 1T segment support goes along with 64k pages.
1679 */
1680 i = 1;
1681 vcpu = kvm_get_vcpu(kvm, 0);
1682 if (vcpu && (vcpu->arch.hflags & BOOK3S_HFLAG_MULTI_PGSIZE)) {
1683 info->flags = KVM_PPC_1T_SEGMENTS;
1684 info->sps[i].page_shift = 16;
1685 info->sps[i].slb_enc = SLB_VSID_L | SLB_VSID_LP_01;
1686 info->sps[i].enc[0].page_shift = 16;
1687 info->sps[i].enc[0].pte_enc = 1;
1688 ++i;
1689 }
1690
1691 /* Standard 16M large page size segment */
1692 info->sps[i].page_shift = 24;
1693 info->sps[i].slb_enc = SLB_VSID_L;
1694 info->sps[i].enc[0].page_shift = 24;
1695 info->sps[i].enc[0].pte_enc = 0;
1696
1697 return 0;
1698 }
1699 #else
1700 static int kvm_vm_ioctl_get_smmu_info_pr(struct kvm *kvm,
1701 struct kvm_ppc_smmu_info *info)
1702 {
1703 /* We should not get called */
1704 BUG();
1705 }
1706 #endif /* CONFIG_PPC64 */
1707
1708 static unsigned int kvm_global_user_count = 0;
1709 static DEFINE_SPINLOCK(kvm_global_user_count_lock);
1710
1711 static int kvmppc_core_init_vm_pr(struct kvm *kvm)
1712 {
1713 mutex_init(&kvm->arch.hpt_mutex);
1714
1715 #ifdef CONFIG_PPC_BOOK3S_64
1716 /* Start out with the default set of hcalls enabled */
1717 kvmppc_pr_init_default_hcalls(kvm);
1718 #endif
1719
1720 if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
1721 spin_lock(&kvm_global_user_count_lock);
1722 if (++kvm_global_user_count == 1)
1723 pseries_disable_reloc_on_exc();
1724 spin_unlock(&kvm_global_user_count_lock);
1725 }
1726 return 0;
1727 }
1728
1729 static void kvmppc_core_destroy_vm_pr(struct kvm *kvm)
1730 {
1731 #ifdef CONFIG_PPC64
1732 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
1733 #endif
1734
1735 if (firmware_has_feature(FW_FEATURE_SET_MODE)) {
1736 spin_lock(&kvm_global_user_count_lock);
1737 BUG_ON(kvm_global_user_count == 0);
1738 if (--kvm_global_user_count == 0)
1739 pseries_enable_reloc_on_exc();
1740 spin_unlock(&kvm_global_user_count_lock);
1741 }
1742 }
1743
1744 static int kvmppc_core_check_processor_compat_pr(void)
1745 {
1746 /*
1747 * Disable KVM for Power9 untill the required bits merged.
1748 */
1749 if (cpu_has_feature(CPU_FTR_ARCH_300))
1750 return -EIO;
1751 return 0;
1752 }
1753
1754 static long kvm_arch_vm_ioctl_pr(struct file *filp,
1755 unsigned int ioctl, unsigned long arg)
1756 {
1757 return -ENOTTY;
1758 }
1759
1760 static struct kvmppc_ops kvm_ops_pr = {
1761 .get_sregs = kvm_arch_vcpu_ioctl_get_sregs_pr,
1762 .set_sregs = kvm_arch_vcpu_ioctl_set_sregs_pr,
1763 .get_one_reg = kvmppc_get_one_reg_pr,
1764 .set_one_reg = kvmppc_set_one_reg_pr,
1765 .vcpu_load = kvmppc_core_vcpu_load_pr,
1766 .vcpu_put = kvmppc_core_vcpu_put_pr,
1767 .set_msr = kvmppc_set_msr_pr,
1768 .vcpu_run = kvmppc_vcpu_run_pr,
1769 .vcpu_create = kvmppc_core_vcpu_create_pr,
1770 .vcpu_free = kvmppc_core_vcpu_free_pr,
1771 .check_requests = kvmppc_core_check_requests_pr,
1772 .get_dirty_log = kvm_vm_ioctl_get_dirty_log_pr,
1773 .flush_memslot = kvmppc_core_flush_memslot_pr,
1774 .prepare_memory_region = kvmppc_core_prepare_memory_region_pr,
1775 .commit_memory_region = kvmppc_core_commit_memory_region_pr,
1776 .unmap_hva = kvm_unmap_hva_pr,
1777 .unmap_hva_range = kvm_unmap_hva_range_pr,
1778 .age_hva = kvm_age_hva_pr,
1779 .test_age_hva = kvm_test_age_hva_pr,
1780 .set_spte_hva = kvm_set_spte_hva_pr,
1781 .mmu_destroy = kvmppc_mmu_destroy_pr,
1782 .free_memslot = kvmppc_core_free_memslot_pr,
1783 .create_memslot = kvmppc_core_create_memslot_pr,
1784 .init_vm = kvmppc_core_init_vm_pr,
1785 .destroy_vm = kvmppc_core_destroy_vm_pr,
1786 .get_smmu_info = kvm_vm_ioctl_get_smmu_info_pr,
1787 .emulate_op = kvmppc_core_emulate_op_pr,
1788 .emulate_mtspr = kvmppc_core_emulate_mtspr_pr,
1789 .emulate_mfspr = kvmppc_core_emulate_mfspr_pr,
1790 .fast_vcpu_kick = kvm_vcpu_kick,
1791 .arch_vm_ioctl = kvm_arch_vm_ioctl_pr,
1792 #ifdef CONFIG_PPC_BOOK3S_64
1793 .hcall_implemented = kvmppc_hcall_impl_pr,
1794 #endif
1795 };
1796
1797
1798 int kvmppc_book3s_init_pr(void)
1799 {
1800 int r;
1801
1802 r = kvmppc_core_check_processor_compat_pr();
1803 if (r < 0)
1804 return r;
1805
1806 kvm_ops_pr.owner = THIS_MODULE;
1807 kvmppc_pr_ops = &kvm_ops_pr;
1808
1809 r = kvmppc_mmu_hpte_sysinit();
1810 return r;
1811 }
1812
1813 void kvmppc_book3s_exit_pr(void)
1814 {
1815 kvmppc_pr_ops = NULL;
1816 kvmppc_mmu_hpte_sysexit();
1817 }
1818
1819 /*
1820 * We only support separate modules for book3s 64
1821 */
1822 #ifdef CONFIG_PPC_BOOK3S_64
1823
1824 module_init(kvmppc_book3s_init_pr);
1825 module_exit(kvmppc_book3s_exit_pr);
1826
1827 MODULE_LICENSE("GPL");
1828 MODULE_ALIAS_MISCDEV(KVM_MINOR);
1829 MODULE_ALIAS("devname:kvm");
1830 #endif
CRIS linux kernel tree