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kvm: powerpc: book3s: Support building HV and PR KVM as module
[linux-2.6-block.git] / arch / powerpc / kvm / book3s.c
CommitLineData
2f4cf5e4
AG		 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 *
8 * Description:
9 * This file is derived from arch/powerpc/kvm/44x.c,
10 * by Hollis Blanchard <hollisb@us.ibm.com>.
11 *
12 * This program is free software; you can redistribute it and/or modify
13 * it under the terms of the GNU General Public License, version 2, as
14 * published by the Free Software Foundation.
15 */
16
17#include <linux/kvm_host.h>
18#include <linux/err.h>
66b15db6 19#include <linux/export.h>
329d20ba 20#include <linux/slab.h>
2f4cf5e4
AG		 21
22#include <asm/reg.h>
23#include <asm/cputable.h>
24#include <asm/cacheflush.h>
25#include <asm/tlbflush.h>
26#include <asm/uaccess.h>
27#include <asm/io.h>
28#include <asm/kvm_ppc.h>
29#include <asm/kvm_book3s.h>
30#include <asm/mmu_context.h>
149dbdb1 31#include <asm/page.h>
5a0e3ad6 32#include <linux/gfp.h>
2f4cf5e4
AG		 33#include <linux/sched.h>
34#include <linux/vmalloc.h>
9fb244a2 35#include <linux/highmem.h>
2f4cf5e4 36
c4befc58
PM		 37#include "trace.h"
38
2f4cf5e4
AG		 39#define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
40
41/* #define EXIT_DEBUG */
07b0907d 42
2f4cf5e4
AG		 43struct kvm_stats_debugfs_item debugfs_entries[] = {
44 { "exits", VCPU_STAT(sum_exits) },
45 { "mmio", VCPU_STAT(mmio_exits) },
46 { "sig", VCPU_STAT(signal_exits) },
47 { "sysc", VCPU_STAT(syscall_exits) },
48 { "inst_emu", VCPU_STAT(emulated_inst_exits) },
49 { "dec", VCPU_STAT(dec_exits) },
50 { "ext_intr", VCPU_STAT(ext_intr_exits) },
51 { "queue_intr", VCPU_STAT(queue_intr) },
52 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
53 { "pf_storage", VCPU_STAT(pf_storage) },
54 { "sp_storage", VCPU_STAT(sp_storage) },
55 { "pf_instruc", VCPU_STAT(pf_instruc) },
56 { "sp_instruc", VCPU_STAT(sp_instruc) },
57 { "ld", VCPU_STAT(ld) },
58 { "ld_slow", VCPU_STAT(ld_slow) },
59 { "st", VCPU_STAT(st) },
60 { "st_slow", VCPU_STAT(st_slow) },
61 { NULL }
62};
63
64void kvmppc_core_load_host_debugstate(struct kvm_vcpu *vcpu)
65{
66}
67
68void kvmppc_core_load_guest_debugstate(struct kvm_vcpu *vcpu)
69{
70}
71
699cc876
AK		 72static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
73{
74 if (!kvmppc_ops->is_hv_enabled)
75 return to_book3s(vcpu)->hior;
76 return 0;
77}
78
79static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
80 unsigned long pending_now, unsigned long old_pending)
81{
82 if (kvmppc_ops->is_hv_enabled)
83 return;
84 if (pending_now)
85 vcpu->arch.shared->int_pending = 1;
86 else if (old_pending)
87 vcpu->arch.shared->int_pending = 0;
88}
89
90static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
91{
92 ulong crit_raw;
93 ulong crit_r1;
94 bool crit;
95
96 if (kvmppc_ops->is_hv_enabled)
97 return false;
98
99 crit_raw = vcpu->arch.shared->critical;
100 crit_r1 = kvmppc_get_gpr(vcpu, 1);
101
102 /* Truncate crit indicators in 32 bit mode */
103 if (!(vcpu->arch.shared->msr & MSR_SF)) {
104 crit_raw &= 0xffffffff;
105 crit_r1 &= 0xffffffff;
106 }
107
108 /* Critical section when crit == r1 */
109 crit = (crit_raw == crit_r1);
110 /* ... and we're in supervisor mode */
111 crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
112
113 return crit;
114}
115
2f4cf5e4
AG		 116void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
117{
de7906c3
AG		 118 vcpu->arch.shared->srr0 = kvmppc_get_pc(vcpu);
119 vcpu->arch.shared->srr1 = vcpu->arch.shared->msr | flags;
f05ed4d5 120 kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
2f4cf5e4
AG		 121 vcpu->arch.mmu.reset_msr(vcpu);
122}
123
583617b7 124static int kvmppc_book3s_vec2irqprio(unsigned int vec)
2f4cf5e4
AG		 125{
126 unsigned int prio;
127
2f4cf5e4
AG		 128 switch (vec) {
129 case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET; break;
130 case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK; break;
131 case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE; break;
132 case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT; break;
133 case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE; break;
134 case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT; break;
135 case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL; break;
17bd1580 136 case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL; break;
2f4cf5e4
AG		 137 case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT; break;
138 case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM; break;
139 case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL; break;
140 case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER; break;
141 case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL; break;
142 case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG; break;
143 case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC; break;
144 case 0xf40: prio = BOOK3S_IRQPRIO_VSX; break;
145 default: prio = BOOK3S_IRQPRIO_MAX; break;
146 }
147
583617b7
AG		 148 return prio;
149}
150
bc5ad3f3 151void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
7706664d
AG		 152 unsigned int vec)
153{
f05ed4d5
PM		 154 unsigned long old_pending = vcpu->arch.pending_exceptions;
155
7706664d
AG		 156 clear_bit(kvmppc_book3s_vec2irqprio(vec),
157 &vcpu->arch.pending_exceptions);
9ee18b1e 158
f05ed4d5
PM		 159 kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
160 old_pending);
7706664d
AG		 161}
162
583617b7
AG		 163void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
164{
165 vcpu->stat.queue_intr++;
166
167 set_bit(kvmppc_book3s_vec2irqprio(vec),
168 &vcpu->arch.pending_exceptions);
2f4cf5e4
AG		 169#ifdef EXIT_DEBUG
170 printk(KERN_INFO "Queueing interrupt %x\n", vec);
171#endif
172}
2ba9f0d8 173EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
2f4cf5e4 174
25a8a02d 175void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
2f4cf5e4 176{
3cf658b6
PM		 177 /* might as well deliver this straight away */
178 kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
2f4cf5e4 179}
2ba9f0d8 180EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
2f4cf5e4
AG		 181
182void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
183{
184 kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
185}
2ba9f0d8 186EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
2f4cf5e4
AG		 187
188int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
189{
44075d95 190 return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
2f4cf5e4 191}
2ba9f0d8 192EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
2f4cf5e4 193
7706664d
AG		 194void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
195{
196 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
197}
2ba9f0d8 198EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
7706664d 199
2f4cf5e4
AG		 200void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
201 struct kvm_interrupt *irq)
202{
17bd1580
AG		 203 unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
204
205 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
206 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
207
208 kvmppc_book3s_queue_irqprio(vcpu, vec);
2f4cf5e4
AG		 209}
210
4fe27d2a 211void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
18978768
AG		 212{
213 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
17bd1580 214 kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
18978768
AG		 215}
216
2f4cf5e4
AG		 217int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu, unsigned int priority)
218{
219 int deliver = 1;
220 int vec = 0;
f05ed4d5 221 bool crit = kvmppc_critical_section(vcpu);
2f4cf5e4
AG		 222
223 switch (priority) {
224 case BOOK3S_IRQPRIO_DECREMENTER:
5c6cedf4 225 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
2f4cf5e4
AG		 226 vec = BOOK3S_INTERRUPT_DECREMENTER;
227 break;
228 case BOOK3S_IRQPRIO_EXTERNAL:
17bd1580 229 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
5c6cedf4 230 deliver = (vcpu->arch.shared->msr & MSR_EE) && !crit;
2f4cf5e4
AG		 231 vec = BOOK3S_INTERRUPT_EXTERNAL;
232 break;
233 case BOOK3S_IRQPRIO_SYSTEM_RESET:
234 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
235 break;
236 case BOOK3S_IRQPRIO_MACHINE_CHECK:
237 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
238 break;
239 case BOOK3S_IRQPRIO_DATA_STORAGE:
240 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
241 break;
242 case BOOK3S_IRQPRIO_INST_STORAGE:
243 vec = BOOK3S_INTERRUPT_INST_STORAGE;
244 break;
245 case BOOK3S_IRQPRIO_DATA_SEGMENT:
246 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
247 break;
248 case BOOK3S_IRQPRIO_INST_SEGMENT:
249 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
250 break;
251 case BOOK3S_IRQPRIO_ALIGNMENT:
252 vec = BOOK3S_INTERRUPT_ALIGNMENT;
253 break;
254 case BOOK3S_IRQPRIO_PROGRAM:
255 vec = BOOK3S_INTERRUPT_PROGRAM;
256 break;
257 case BOOK3S_IRQPRIO_VSX:
258 vec = BOOK3S_INTERRUPT_VSX;
259 break;
260 case BOOK3S_IRQPRIO_ALTIVEC:
261 vec = BOOK3S_INTERRUPT_ALTIVEC;
262 break;
263 case BOOK3S_IRQPRIO_FP_UNAVAIL:
264 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
265 break;
266 case BOOK3S_IRQPRIO_SYSCALL:
267 vec = BOOK3S_INTERRUPT_SYSCALL;
268 break;
269 case BOOK3S_IRQPRIO_DEBUG:
270 vec = BOOK3S_INTERRUPT_TRACE;
271 break;
272 case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
273 vec = BOOK3S_INTERRUPT_PERFMON;
274 break;
275 default:
276 deliver = 0;
277 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
278 break;
279 }
280
281#if 0
282 printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
283#endif
284
285 if (deliver)
3cf658b6 286 kvmppc_inject_interrupt(vcpu, vec, 0);
2f4cf5e4
AG		 287
288 return deliver;
289}
290
17bd1580
AG		 291/*
292 * This function determines if an irqprio should be cleared once issued.
293 */
294static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
295{
296 switch (priority) {
297 case BOOK3S_IRQPRIO_DECREMENTER:
298 /* DEC interrupts get cleared by mtdec */
299 return false;
300 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
301 /* External interrupts get cleared by userspace */
302 return false;
303 }
304
305 return true;
306}
307
a8e4ef84 308int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
2f4cf5e4
AG		 309{
310 unsigned long *pending = &vcpu->arch.pending_exceptions;
90bba358 311 unsigned long old_pending = vcpu->arch.pending_exceptions;
2f4cf5e4
AG		 312 unsigned int priority;
313
2f4cf5e4
AG		 314#ifdef EXIT_DEBUG
315 if (vcpu->arch.pending_exceptions)
316 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
317#endif
318 priority = __ffs(*pending);
ada7ba17 319 while (priority < BOOK3S_IRQPRIO_MAX) {
7706664d 320 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
17bd1580 321 clear_irqprio(vcpu, priority)) {
2f4cf5e4
AG		 322 clear_bit(priority, &vcpu->arch.pending_exceptions);
323 break;
324 }
325
326 priority = find_next_bit(pending,
327 BITS_PER_BYTE * sizeof(*pending),
328 priority + 1);
329 }
90bba358
AG		 330
331 /* Tell the guest about our interrupt status */
f05ed4d5 332 kvmppc_update_int_pending(vcpu, *pending, old_pending);
a8e4ef84
AG		 333
334 return 0;
2f4cf5e4 335}
2ba9f0d8 336EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
2f4cf5e4 337
93b159b4
PM		 338pfn_t kvmppc_gfn_to_pfn(struct kvm_vcpu *vcpu, gfn_t gfn, bool writing,
339 bool *writable)
e8508940
AG		 340{
341 ulong mp_pa = vcpu->arch.magic_page_pa;
342
bbcc9c06
BH		 343 if (!(vcpu->arch.shared->msr & MSR_SF))
344 mp_pa = (uint32_t)mp_pa;
345
e8508940
AG		 346 /* Magic page override */
347 if (unlikely(mp_pa) &&
348 unlikely(((gfn << PAGE_SHIFT) & KVM_PAM) ==
349 ((mp_pa & PAGE_MASK) & KVM_PAM))) {
350 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
351 pfn_t pfn;
352
353 pfn = (pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
354 get_page(pfn_to_page(pfn));
93b159b4
PM		 355 if (writable)
356 *writable = true;
e8508940
AG		 357 return pfn;
358 }
359
93b159b4 360 return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
e8508940 361}
2ba9f0d8 362EXPORT_SYMBOL_GPL(kvmppc_gfn_to_pfn);
e8508940 363
2f4cf5e4 364static int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, bool data,
93b159b4 365 bool iswrite, struct kvmppc_pte *pte)
2f4cf5e4 366{
666e7252 367 int relocated = (vcpu->arch.shared->msr & (data ? MSR_DR : MSR_IR));
2f4cf5e4
AG		 368 int r;
369
370 if (relocated) {
93b159b4 371 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
2f4cf5e4
AG		 372 } else {
373 pte->eaddr = eaddr;
28e83b4f 374 pte->raddr = eaddr & KVM_PAM;
3eeafd7d 375 pte->vpage = VSID_REAL | eaddr >> 12;
2f4cf5e4
AG		 376 pte->may_read = true;
377 pte->may_write = true;
378 pte->may_execute = true;
379 r = 0;
380 }
381
382 return r;
383}
384
385static hva_t kvmppc_bad_hva(void)
386{
387 return PAGE_OFFSET;
388}
389
390static hva_t kvmppc_pte_to_hva(struct kvm_vcpu *vcpu, struct kvmppc_pte *pte,
391 bool read)
392{
393 hva_t hpage;
394
395 if (read && !pte->may_read)
396 goto err;
397
398 if (!read && !pte->may_write)
399 goto err;
400
401 hpage = gfn_to_hva(vcpu->kvm, pte->raddr >> PAGE_SHIFT);
402 if (kvm_is_error_hva(hpage))
403 goto err;
404
405 return hpage | (pte->raddr & ~PAGE_MASK);
406err:
407 return kvmppc_bad_hva();
408}
409
5467a97d
AG		 410int kvmppc_st(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
411 bool data)
2f4cf5e4
AG		 412{
413 struct kvmppc_pte pte;
2f4cf5e4
AG		 414
415 vcpu->stat.st++;
416
93b159b4 417 if (kvmppc_xlate(vcpu, *eaddr, data, true, &pte))
9fb244a2 418 return -ENOENT;
5467a97d
AG		 419
420 *eaddr = pte.raddr;
2f4cf5e4 421
9fb244a2
AG		 422 if (!pte.may_write)
423 return -EPERM;
2f4cf5e4 424
9fb244a2
AG		 425 if (kvm_write_guest(vcpu->kvm, pte.raddr, ptr, size))
426 return EMULATE_DO_MMIO;
2f4cf5e4 427
5467a97d 428 return EMULATE_DONE;
2f4cf5e4 429}
2ba9f0d8 430EXPORT_SYMBOL_GPL(kvmppc_st);
2f4cf5e4 431
5467a97d 432int kvmppc_ld(struct kvm_vcpu *vcpu, ulong *eaddr, int size, void *ptr,
2f4cf5e4
AG		 433 bool data)
434{
435 struct kvmppc_pte pte;
5467a97d 436 hva_t hva = *eaddr;
2f4cf5e4
AG		 437
438 vcpu->stat.ld++;
439
93b159b4 440 if (kvmppc_xlate(vcpu, *eaddr, data, false, &pte))
5467a97d
AG		 441 goto nopte;
442
443 *eaddr = pte.raddr;
2f4cf5e4
AG		 444
445 hva = kvmppc_pte_to_hva(vcpu, &pte, true);
446 if (kvm_is_error_hva(hva))
5467a97d 447 goto mmio;
2f4cf5e4
AG		 448
449 if (copy_from_user(ptr, (void __user *)hva, size)) {
450 printk(KERN_INFO "kvmppc_ld at 0x%lx failed\n", hva);
5467a97d 451 goto mmio;
2f4cf5e4
AG		 452 }
453
5467a97d 454 return EMULATE_DONE;
2f4cf5e4 455
5467a97d 456nopte:
2f4cf5e4 457 return -ENOENT;
5467a97d
AG		 458mmio:
459 return EMULATE_DO_MMIO;
2f4cf5e4 460}
2ba9f0d8 461EXPORT_SYMBOL_GPL(kvmppc_ld);
2f4cf5e4 462
2f4cf5e4
AG		 463int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
464{
465 return 0;
466}
467
f61c94bb
BB		 468int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
469{
470 return 0;
471}
472
473void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
474{
475}
476
3a167bea
AK		 477int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
478 struct kvm_sregs *sregs)
479{
480 return kvmppc_ops->get_sregs(vcpu, sregs);
481}
482
483int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
484 struct kvm_sregs *sregs)
485{
486 return kvmppc_ops->set_sregs(vcpu, sregs);
487}
488
2f4cf5e4
AG		 489int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
490{
491 int i;
492
c7f38f46 493 regs->pc = kvmppc_get_pc(vcpu);
992b5b29 494 regs->cr = kvmppc_get_cr(vcpu);
c7f38f46
AG		 495 regs->ctr = kvmppc_get_ctr(vcpu);
496 regs->lr = kvmppc_get_lr(vcpu);
992b5b29 497 regs->xer = kvmppc_get_xer(vcpu);
666e7252 498 regs->msr = vcpu->arch.shared->msr;
de7906c3
AG		 499 regs->srr0 = vcpu->arch.shared->srr0;
500 regs->srr1 = vcpu->arch.shared->srr1;
2f4cf5e4 501 regs->pid = vcpu->arch.pid;
a73a9599
AG		 502 regs->sprg0 = vcpu->arch.shared->sprg0;
503 regs->sprg1 = vcpu->arch.shared->sprg1;
504 regs->sprg2 = vcpu->arch.shared->sprg2;
505 regs->sprg3 = vcpu->arch.shared->sprg3;
b5904972
SW		 506 regs->sprg4 = vcpu->arch.shared->sprg4;
507 regs->sprg5 = vcpu->arch.shared->sprg5;
508 regs->sprg6 = vcpu->arch.shared->sprg6;
509 regs->sprg7 = vcpu->arch.shared->sprg7;
2f4cf5e4
AG		 510
511 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
8e5b26b5 512 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
2f4cf5e4
AG		 513
514 return 0;
515}
516
517int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
518{
519 int i;
520
c7f38f46 521 kvmppc_set_pc(vcpu, regs->pc);
992b5b29 522 kvmppc_set_cr(vcpu, regs->cr);
c7f38f46
AG		 523 kvmppc_set_ctr(vcpu, regs->ctr);
524 kvmppc_set_lr(vcpu, regs->lr);
992b5b29 525 kvmppc_set_xer(vcpu, regs->xer);
2f4cf5e4 526 kvmppc_set_msr(vcpu, regs->msr);
de7906c3
AG		 527 vcpu->arch.shared->srr0 = regs->srr0;
528 vcpu->arch.shared->srr1 = regs->srr1;
a73a9599
AG		 529 vcpu->arch.shared->sprg0 = regs->sprg0;
530 vcpu->arch.shared->sprg1 = regs->sprg1;
531 vcpu->arch.shared->sprg2 = regs->sprg2;
532 vcpu->arch.shared->sprg3 = regs->sprg3;
b5904972
SW		 533 vcpu->arch.shared->sprg4 = regs->sprg4;
534 vcpu->arch.shared->sprg5 = regs->sprg5;
535 vcpu->arch.shared->sprg6 = regs->sprg6;
536 vcpu->arch.shared->sprg7 = regs->sprg7;
2f4cf5e4 537
8e5b26b5
AG		 538 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
539 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
2f4cf5e4
AG		 540
541 return 0;
542}
543
2f4cf5e4
AG		 544int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
545{
546 return -ENOTSUPP;
547}
548
549int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
550{
551 return -ENOTSUPP;
552}
553
a136a8bd
PM		 554int kvm_vcpu_ioctl_get_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
555{
556 int r;
557 union kvmppc_one_reg val;
558 int size;
a8bd19ef 559 long int i;
a136a8bd
PM		 560
561 size = one_reg_size(reg->id);
562 if (size > sizeof(val))
563 return -EINVAL;
564
3a167bea 565 r = kvmppc_ops->get_one_reg(vcpu, reg->id, &val);
a136a8bd
PM		 566 if (r == -EINVAL) {
567 r = 0;
568 switch (reg->id) {
569 case KVM_REG_PPC_DAR:
570 val = get_reg_val(reg->id, vcpu->arch.shared->dar);
571 break;
572 case KVM_REG_PPC_DSISR:
573 val = get_reg_val(reg->id, vcpu->arch.shared->dsisr);
574 break;
a8bd19ef
PM		 575 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
576 i = reg->id - KVM_REG_PPC_FPR0;
577 val = get_reg_val(reg->id, vcpu->arch.fpr[i]);
578 break;
579 case KVM_REG_PPC_FPSCR:
580 val = get_reg_val(reg->id, vcpu->arch.fpscr);
581 break;
582#ifdef CONFIG_ALTIVEC
583 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
584 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
585 r = -ENXIO;
586 break;
587 }
588 val.vval = vcpu->arch.vr[reg->id - KVM_REG_PPC_VR0];
589 break;
590 case KVM_REG_PPC_VSCR:
591 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
592 r = -ENXIO;
593 break;
594 }
595 val = get_reg_val(reg->id, vcpu->arch.vscr.u[3]);
596 break;
c0867fd5
PM		 597 case KVM_REG_PPC_VRSAVE:
598 val = get_reg_val(reg->id, vcpu->arch.vrsave);
599 break;
a8bd19ef 600#endif /* CONFIG_ALTIVEC */
8c32a2ea
BB		 601 case KVM_REG_PPC_DEBUG_INST: {
602 u32 opcode = INS_TW;
603 r = copy_to_user((u32 __user *)(long)reg->addr,
604 &opcode, sizeof(u32));
605 break;
606 }
8b78645c
PM		 607#ifdef CONFIG_KVM_XICS
608 case KVM_REG_PPC_ICP_STATE:
609 if (!vcpu->arch.icp) {
610 r = -ENXIO;
611 break;
612 }
613 val = get_reg_val(reg->id, kvmppc_xics_get_icp(vcpu));
614 break;
615#endif /* CONFIG_KVM_XICS */
a136a8bd
PM		 616 default:
617 r = -EINVAL;
618 break;
619 }
620 }
621 if (r)
622 return r;
623
624 if (copy_to_user((char __user *)(unsigned long)reg->addr, &val, size))
625 r = -EFAULT;
626
627 return r;
628}
629
630int kvm_vcpu_ioctl_set_one_reg(struct kvm_vcpu *vcpu, struct kvm_one_reg *reg)
631{
632 int r;
633 union kvmppc_one_reg val;
634 int size;
a8bd19ef 635 long int i;
a136a8bd
PM		 636
637 size = one_reg_size(reg->id);
638 if (size > sizeof(val))
639 return -EINVAL;
640
641 if (copy_from_user(&val, (char __user *)(unsigned long)reg->addr, size))
642 return -EFAULT;
643
3a167bea 644 r = kvmppc_ops->set_one_reg(vcpu, reg->id, &val);
a136a8bd
PM		 645 if (r == -EINVAL) {
646 r = 0;
647 switch (reg->id) {
648 case KVM_REG_PPC_DAR:
649 vcpu->arch.shared->dar = set_reg_val(reg->id, val);
650 break;
651 case KVM_REG_PPC_DSISR:
652 vcpu->arch.shared->dsisr = set_reg_val(reg->id, val);
653 break;
a8bd19ef
PM		 654 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
655 i = reg->id - KVM_REG_PPC_FPR0;
656 vcpu->arch.fpr[i] = set_reg_val(reg->id, val);
657 break;
658 case KVM_REG_PPC_FPSCR:
659 vcpu->arch.fpscr = set_reg_val(reg->id, val);
660 break;
661#ifdef CONFIG_ALTIVEC
662 case KVM_REG_PPC_VR0 ... KVM_REG_PPC_VR31:
663 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
664 r = -ENXIO;
665 break;
666 }
667 vcpu->arch.vr[reg->id - KVM_REG_PPC_VR0] = val.vval;
668 break;
669 case KVM_REG_PPC_VSCR:
670 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
671 r = -ENXIO;
672 break;
673 }
674 vcpu->arch.vscr.u[3] = set_reg_val(reg->id, val);
675 break;
c0867fd5
PM		 676 case KVM_REG_PPC_VRSAVE:
677 if (!cpu_has_feature(CPU_FTR_ALTIVEC)) {
678 r = -ENXIO;
679 break;
680 }
681 vcpu->arch.vrsave = set_reg_val(reg->id, val);
682 break;
a8bd19ef 683#endif /* CONFIG_ALTIVEC */
8b78645c
PM		 684#ifdef CONFIG_KVM_XICS
685 case KVM_REG_PPC_ICP_STATE:
686 if (!vcpu->arch.icp) {
687 r = -ENXIO;
688 break;
689 }
690 r = kvmppc_xics_set_icp(vcpu,
691 set_reg_val(reg->id, val));
692 break;
693#endif /* CONFIG_KVM_XICS */
a136a8bd
PM		 694 default:
695 r = -EINVAL;
696 break;
697 }
698 }
699
700 return r;
701}
702
3a167bea
AK		 703void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
704{
705 kvmppc_ops->vcpu_load(vcpu, cpu);
706}
707
708void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
709{
710 kvmppc_ops->vcpu_put(vcpu);
711}
712
713void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
714{
715 kvmppc_ops->set_msr(vcpu, msr);
716}
2ba9f0d8 717EXPORT_SYMBOL_GPL(kvmppc_set_msr);
3a167bea
AK		 718
719int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
720{
721 return kvmppc_ops->vcpu_run(kvm_run, vcpu);
722}
723
2f4cf5e4
AG		 724int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
725 struct kvm_translation *tr)
726{
727 return 0;
728}
729
092d62ee
BB		 730int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
731 struct kvm_guest_debug *dbg)
732{
733 return -EINVAL;
734}
735
dfd4d47e
SW		 736void kvmppc_decrementer_func(unsigned long data)
737{
738 struct kvm_vcpu *vcpu = (struct kvm_vcpu *)data;
739
740 kvmppc_core_queue_dec(vcpu);
741 kvm_vcpu_kick(vcpu);
742}
3a167bea
AK		 743
744struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
745{
746 return kvmppc_ops->vcpu_create(kvm, id);
747}
748
749void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
750{
751 kvmppc_ops->vcpu_free(vcpu);
752}
753
754int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
755{
756 return kvmppc_ops->check_requests(vcpu);
757}
758
759int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
760{
761 return kvmppc_ops->get_dirty_log(kvm, log);
762}
763
764void kvmppc_core_free_memslot(struct kvm_memory_slot *free,
765 struct kvm_memory_slot *dont)
766{
767 kvmppc_ops->free_memslot(free, dont);
768}
769
770int kvmppc_core_create_memslot(struct kvm_memory_slot *slot,
771 unsigned long npages)
772{
773 return kvmppc_ops->create_memslot(slot, npages);
774}
775
776void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
777{
778 kvmppc_ops->flush_memslot(kvm, memslot);
779}
780
781int kvmppc_core_prepare_memory_region(struct kvm *kvm,
782 struct kvm_memory_slot *memslot,
783 struct kvm_userspace_memory_region *mem)
784{
785 return kvmppc_ops->prepare_memory_region(kvm, memslot, mem);
786}
787
788void kvmppc_core_commit_memory_region(struct kvm *kvm,
789 struct kvm_userspace_memory_region *mem,
790 const struct kvm_memory_slot *old)
791{
792 kvmppc_ops->commit_memory_region(kvm, mem, old);
793}
794
795int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
796{
797 return kvmppc_ops->unmap_hva(kvm, hva);
798}
2ba9f0d8 799EXPORT_SYMBOL_GPL(kvm_unmap_hva);
3a167bea
AK		 800
801int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
802{
803 return kvmppc_ops->unmap_hva_range(kvm, start, end);
804}
805
806int kvm_age_hva(struct kvm *kvm, unsigned long hva)
807{
808 return kvmppc_ops->age_hva(kvm, hva);
809}
810
811int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
812{
813 return kvmppc_ops->test_age_hva(kvm, hva);
814}
815
816void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
817{
818 kvmppc_ops->set_spte_hva(kvm, hva, pte);
819}
820
821void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
822{
823 kvmppc_ops->mmu_destroy(vcpu);
824}
825
826int kvmppc_core_init_vm(struct kvm *kvm)
827{
828
829#ifdef CONFIG_PPC64
830 INIT_LIST_HEAD(&kvm->arch.spapr_tce_tables);
831 INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
832#endif
833
834 return kvmppc_ops->init_vm(kvm);
835}
836
837void kvmppc_core_destroy_vm(struct kvm *kvm)
838{
839 kvmppc_ops->destroy_vm(kvm);
840
841#ifdef CONFIG_PPC64
842 kvmppc_rtas_tokens_free(kvm);
843 WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
844#endif
845}
846
847int kvmppc_core_check_processor_compat(void)
848{
849 return kvmppc_ops->check_processor_compat();
850}
Linux 6.x block layer and io_uring tree(s)