~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

TOMOYO Linux Cross Reference
Linux/arch/powerpc/kvm/book3s.c

Version: ~ [ linux-5.2-rc4 ] ~ [ linux-5.1.9 ] ~ [ linux-5.0.21 ] ~ [ linux-4.20.17 ] ~ [ linux-4.19.50 ] ~ [ linux-4.18.20 ] ~ [ linux-4.17.19 ] ~ [ linux-4.16.18 ] ~ [ linux-4.15.18 ] ~ [ linux-4.14.125 ] ~ [ linux-4.13.16 ] ~ [ linux-4.12.14 ] ~ [ linux-4.11.12 ] ~ [ linux-4.10.17 ] ~ [ linux-4.9.181 ] ~ [ linux-4.8.17 ] ~ [ linux-4.7.10 ] ~ [ linux-4.6.7 ] ~ [ linux-4.5.7 ] ~ [ linux-4.4.181 ] ~ [ linux-4.3.6 ] ~ [ linux-4.2.8 ] ~ [ linux-4.1.52 ] ~ [ linux-4.0.9 ] ~ [ linux-3.19.8 ] ~ [ linux-3.18.140 ] ~ [ linux-3.17.8 ] ~ [ linux-3.16.68 ] ~ [ linux-3.15.10 ] ~ [ linux-3.14.79 ] ~ [ linux-3.13.11 ] ~ [ linux-3.12.74 ] ~ [ linux-3.11.10 ] ~ [ linux-3.10.108 ] ~ [ linux-3.9.11 ] ~ [ linux-3.8.13 ] ~ [ linux-3.7.10 ] ~ [ linux-3.6.11 ] ~ [ linux-3.5.7 ] ~ [ linux-3.4.113 ] ~ [ linux-3.3.8 ] ~ [ linux-3.2.102 ] ~ [ linux-3.1.10 ] ~ [ linux-3.0.101 ] ~ [ linux-2.6.39.4 ] ~ [ linux-2.6.38.8 ] ~ [ linux-2.6.37.6 ] ~ [ linux-2.6.36.4 ] ~ [ linux-2.6.35.14 ] ~ [ linux-2.6.34.15 ] ~ [ linux-2.6.33.20 ] ~ [ linux-2.6.32.71 ] ~ [ linux-2.6.0 ] ~ [ linux-2.4.37.11 ] ~ [ unix-v6-master ] ~ [ ccs-tools-1.8.5 ] ~ [ policy-sample ] ~
Architecture: ~ [ i386 ] ~ [ alpha ] ~ [ m68k ] ~ [ mips ] ~ [ ppc ] ~ [ sparc ] ~ [ sparc64 ] ~

  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>
 19 #include <linux/export.h>
 20 #include <linux/slab.h>
 21 #include <linux/module.h>
 22 #include <linux/miscdevice.h>
 23 
 24 #include <asm/reg.h>
 25 #include <asm/cputable.h>
 26 #include <asm/cacheflush.h>
 27 #include <asm/tlbflush.h>
 28 #include <linux/uaccess.h>
 29 #include <asm/io.h>
 30 #include <asm/kvm_ppc.h>
 31 #include <asm/kvm_book3s.h>
 32 #include <asm/mmu_context.h>
 33 #include <asm/page.h>
 34 #include <linux/gfp.h>
 35 #include <linux/sched.h>
 36 #include <linux/vmalloc.h>
 37 #include <linux/highmem.h>
 38 
 39 #include "book3s.h"
 40 #include "trace.h"
 41 
 42 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
 43 
 44 /* #define EXIT_DEBUG */
 45 
 46 struct kvm_stats_debugfs_item debugfs_entries[] = {
 47         { "exits",       VCPU_STAT(sum_exits) },
 48         { "mmio",        VCPU_STAT(mmio_exits) },
 49         { "sig",         VCPU_STAT(signal_exits) },
 50         { "sysc",        VCPU_STAT(syscall_exits) },
 51         { "inst_emu",    VCPU_STAT(emulated_inst_exits) },
 52         { "dec",         VCPU_STAT(dec_exits) },
 53         { "ext_intr",    VCPU_STAT(ext_intr_exits) },
 54         { "queue_intr",  VCPU_STAT(queue_intr) },
 55         { "halt_poll_success_ns",       VCPU_STAT(halt_poll_success_ns) },
 56         { "halt_poll_fail_ns",          VCPU_STAT(halt_poll_fail_ns) },
 57         { "halt_wait_ns",               VCPU_STAT(halt_wait_ns) },
 58         { "halt_successful_poll", VCPU_STAT(halt_successful_poll), },
 59         { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll), },
 60         { "halt_successful_wait",       VCPU_STAT(halt_successful_wait) },
 61         { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
 62         { "halt_wakeup", VCPU_STAT(halt_wakeup) },
 63         { "pf_storage",  VCPU_STAT(pf_storage) },
 64         { "sp_storage",  VCPU_STAT(sp_storage) },
 65         { "pf_instruc",  VCPU_STAT(pf_instruc) },
 66         { "sp_instruc",  VCPU_STAT(sp_instruc) },
 67         { "ld",          VCPU_STAT(ld) },
 68         { "ld_slow",     VCPU_STAT(ld_slow) },
 69         { "st",          VCPU_STAT(st) },
 70         { "st_slow",     VCPU_STAT(st_slow) },
 71         { "pthru_all",       VCPU_STAT(pthru_all) },
 72         { "pthru_host",      VCPU_STAT(pthru_host) },
 73         { "pthru_bad_aff",   VCPU_STAT(pthru_bad_aff) },
 74         { NULL }
 75 };
 76 
 77 void kvmppc_unfixup_split_real(struct kvm_vcpu *vcpu)
 78 {
 79         if (vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) {
 80                 ulong pc = kvmppc_get_pc(vcpu);
 81                 if ((pc & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS)
 82                         kvmppc_set_pc(vcpu, pc & ~SPLIT_HACK_MASK);
 83                 vcpu->arch.hflags &= ~BOOK3S_HFLAG_SPLIT_HACK;
 84         }
 85 }
 86 EXPORT_SYMBOL_GPL(kvmppc_unfixup_split_real);
 87 
 88 static inline unsigned long kvmppc_interrupt_offset(struct kvm_vcpu *vcpu)
 89 {
 90         if (!is_kvmppc_hv_enabled(vcpu->kvm))
 91                 return to_book3s(vcpu)->hior;
 92         return 0;
 93 }
 94 
 95 static inline void kvmppc_update_int_pending(struct kvm_vcpu *vcpu,
 96                         unsigned long pending_now, unsigned long old_pending)
 97 {
 98         if (is_kvmppc_hv_enabled(vcpu->kvm))
 99                 return;
100         if (pending_now)
101                 kvmppc_set_int_pending(vcpu, 1);
102         else if (old_pending)
103                 kvmppc_set_int_pending(vcpu, 0);
104 }
105 
106 static inline bool kvmppc_critical_section(struct kvm_vcpu *vcpu)
107 {
108         ulong crit_raw;
109         ulong crit_r1;
110         bool crit;
111 
112         if (is_kvmppc_hv_enabled(vcpu->kvm))
113                 return false;
114 
115         crit_raw = kvmppc_get_critical(vcpu);
116         crit_r1 = kvmppc_get_gpr(vcpu, 1);
117 
118         /* Truncate crit indicators in 32 bit mode */
119         if (!(kvmppc_get_msr(vcpu) & MSR_SF)) {
120                 crit_raw &= 0xffffffff;
121                 crit_r1 &= 0xffffffff;
122         }
123 
124         /* Critical section when crit == r1 */
125         crit = (crit_raw == crit_r1);
126         /* ... and we're in supervisor mode */
127         crit = crit && !(kvmppc_get_msr(vcpu) & MSR_PR);
128 
129         return crit;
130 }
131 
132 void kvmppc_inject_interrupt(struct kvm_vcpu *vcpu, int vec, u64 flags)
133 {
134         kvmppc_unfixup_split_real(vcpu);
135         kvmppc_set_srr0(vcpu, kvmppc_get_pc(vcpu));
136         kvmppc_set_srr1(vcpu, kvmppc_get_msr(vcpu) | flags);
137         kvmppc_set_pc(vcpu, kvmppc_interrupt_offset(vcpu) + vec);
138         vcpu->arch.mmu.reset_msr(vcpu);
139 }
140 
141 static int kvmppc_book3s_vec2irqprio(unsigned int vec)
142 {
143         unsigned int prio;
144 
145         switch (vec) {
146         case 0x100: prio = BOOK3S_IRQPRIO_SYSTEM_RESET;         break;
147         case 0x200: prio = BOOK3S_IRQPRIO_MACHINE_CHECK;        break;
148         case 0x300: prio = BOOK3S_IRQPRIO_DATA_STORAGE;         break;
149         case 0x380: prio = BOOK3S_IRQPRIO_DATA_SEGMENT;         break;
150         case 0x400: prio = BOOK3S_IRQPRIO_INST_STORAGE;         break;
151         case 0x480: prio = BOOK3S_IRQPRIO_INST_SEGMENT;         break;
152         case 0x500: prio = BOOK3S_IRQPRIO_EXTERNAL;             break;
153         case 0x501: prio = BOOK3S_IRQPRIO_EXTERNAL_LEVEL;       break;
154         case 0x600: prio = BOOK3S_IRQPRIO_ALIGNMENT;            break;
155         case 0x700: prio = BOOK3S_IRQPRIO_PROGRAM;              break;
156         case 0x800: prio = BOOK3S_IRQPRIO_FP_UNAVAIL;           break;
157         case 0x900: prio = BOOK3S_IRQPRIO_DECREMENTER;          break;
158         case 0xc00: prio = BOOK3S_IRQPRIO_SYSCALL;              break;
159         case 0xd00: prio = BOOK3S_IRQPRIO_DEBUG;                break;
160         case 0xf20: prio = BOOK3S_IRQPRIO_ALTIVEC;              break;
161         case 0xf40: prio = BOOK3S_IRQPRIO_VSX;                  break;
162         case 0xf60: prio = BOOK3S_IRQPRIO_FAC_UNAVAIL;          break;
163         default:    prio = BOOK3S_IRQPRIO_MAX;                  break;
164         }
165 
166         return prio;
167 }
168 
169 void kvmppc_book3s_dequeue_irqprio(struct kvm_vcpu *vcpu,
170                                           unsigned int vec)
171 {
172         unsigned long old_pending = vcpu->arch.pending_exceptions;
173 
174         clear_bit(kvmppc_book3s_vec2irqprio(vec),
175                   &vcpu->arch.pending_exceptions);
176 
177         kvmppc_update_int_pending(vcpu, vcpu->arch.pending_exceptions,
178                                   old_pending);
179 }
180 
181 void kvmppc_book3s_queue_irqprio(struct kvm_vcpu *vcpu, unsigned int vec)
182 {
183         vcpu->stat.queue_intr++;
184 
185         set_bit(kvmppc_book3s_vec2irqprio(vec),
186                 &vcpu->arch.pending_exceptions);
187 #ifdef EXIT_DEBUG
188         printk(KERN_INFO "Queueing interrupt %x\n", vec);
189 #endif
190 }
191 EXPORT_SYMBOL_GPL(kvmppc_book3s_queue_irqprio);
192 
193 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong flags)
194 {
195         /* might as well deliver this straight away */
196         kvmppc_inject_interrupt(vcpu, BOOK3S_INTERRUPT_PROGRAM, flags);
197 }
198 EXPORT_SYMBOL_GPL(kvmppc_core_queue_program);
199 
200 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
201 {
202         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
203 }
204 EXPORT_SYMBOL_GPL(kvmppc_core_queue_dec);
205 
206 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
207 {
208         return test_bit(BOOK3S_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
209 }
210 EXPORT_SYMBOL_GPL(kvmppc_core_pending_dec);
211 
212 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
213 {
214         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_DECREMENTER);
215 }
216 EXPORT_SYMBOL_GPL(kvmppc_core_dequeue_dec);
217 
218 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
219                                 struct kvm_interrupt *irq)
220 {
221         unsigned int vec = BOOK3S_INTERRUPT_EXTERNAL;
222 
223         if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
224                 vec = BOOK3S_INTERRUPT_EXTERNAL_LEVEL;
225 
226         kvmppc_book3s_queue_irqprio(vcpu, vec);
227 }
228 
229 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
230 {
231         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL);
232         kvmppc_book3s_dequeue_irqprio(vcpu, BOOK3S_INTERRUPT_EXTERNAL_LEVEL);
233 }
234 
235 void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu, ulong dar,
236                                     ulong flags)
237 {
238         kvmppc_set_dar(vcpu, dar);
239         kvmppc_set_dsisr(vcpu, flags);
240         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_DATA_STORAGE);
241 }
242 
243 void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong flags)
244 {
245         u64 msr = kvmppc_get_msr(vcpu);
246         msr &= ~(SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
247         msr |= flags & (SRR1_ISI_NOPT | SRR1_ISI_N_OR_G | SRR1_ISI_PROT);
248         kvmppc_set_msr_fast(vcpu, msr);
249         kvmppc_book3s_queue_irqprio(vcpu, BOOK3S_INTERRUPT_INST_STORAGE);
250 }
251 
252 static int kvmppc_book3s_irqprio_deliver(struct kvm_vcpu *vcpu,
253                                          unsigned int priority)
254 {
255         int deliver = 1;
256         int vec = 0;
257         bool crit = kvmppc_critical_section(vcpu);
258 
259         switch (priority) {
260         case BOOK3S_IRQPRIO_DECREMENTER:
261                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
262                 vec = BOOK3S_INTERRUPT_DECREMENTER;
263                 break;
264         case BOOK3S_IRQPRIO_EXTERNAL:
265         case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
266                 deliver = (kvmppc_get_msr(vcpu) & MSR_EE) && !crit;
267                 vec = BOOK3S_INTERRUPT_EXTERNAL;
268                 break;
269         case BOOK3S_IRQPRIO_SYSTEM_RESET:
270                 vec = BOOK3S_INTERRUPT_SYSTEM_RESET;
271                 break;
272         case BOOK3S_IRQPRIO_MACHINE_CHECK:
273                 vec = BOOK3S_INTERRUPT_MACHINE_CHECK;
274                 break;
275         case BOOK3S_IRQPRIO_DATA_STORAGE:
276                 vec = BOOK3S_INTERRUPT_DATA_STORAGE;
277                 break;
278         case BOOK3S_IRQPRIO_INST_STORAGE:
279                 vec = BOOK3S_INTERRUPT_INST_STORAGE;
280                 break;
281         case BOOK3S_IRQPRIO_DATA_SEGMENT:
282                 vec = BOOK3S_INTERRUPT_DATA_SEGMENT;
283                 break;
284         case BOOK3S_IRQPRIO_INST_SEGMENT:
285                 vec = BOOK3S_INTERRUPT_INST_SEGMENT;
286                 break;
287         case BOOK3S_IRQPRIO_ALIGNMENT:
288                 vec = BOOK3S_INTERRUPT_ALIGNMENT;
289                 break;
290         case BOOK3S_IRQPRIO_PROGRAM:
291                 vec = BOOK3S_INTERRUPT_PROGRAM;
292                 break;
293         case BOOK3S_IRQPRIO_VSX:
294                 vec = BOOK3S_INTERRUPT_VSX;
295                 break;
296         case BOOK3S_IRQPRIO_ALTIVEC:
297                 vec = BOOK3S_INTERRUPT_ALTIVEC;
298                 break;
299         case BOOK3S_IRQPRIO_FP_UNAVAIL:
300                 vec = BOOK3S_INTERRUPT_FP_UNAVAIL;
301                 break;
302         case BOOK3S_IRQPRIO_SYSCALL:
303                 vec = BOOK3S_INTERRUPT_SYSCALL;
304                 break;
305         case BOOK3S_IRQPRIO_DEBUG:
306                 vec = BOOK3S_INTERRUPT_TRACE;
307                 break;
308         case BOOK3S_IRQPRIO_PERFORMANCE_MONITOR:
309                 vec = BOOK3S_INTERRUPT_PERFMON;
310                 break;
311         case BOOK3S_IRQPRIO_FAC_UNAVAIL:
312                 vec = BOOK3S_INTERRUPT_FAC_UNAVAIL;
313                 break;
314         default:
315                 deliver = 0;
316                 printk(KERN_ERR "KVM: Unknown interrupt: 0x%x\n", priority);
317                 break;
318         }
319 
320 #if 0
321         printk(KERN_INFO "Deliver interrupt 0x%x? %x\n", vec, deliver);
322 #endif
323 
324         if (deliver)
325                 kvmppc_inject_interrupt(vcpu, vec, 0);
326 
327         return deliver;
328 }
329 
330 /*
331  * This function determines if an irqprio should be cleared once issued.
332  */
333 static bool clear_irqprio(struct kvm_vcpu *vcpu, unsigned int priority)
334 {
335         switch (priority) {
336                 case BOOK3S_IRQPRIO_DECREMENTER:
337                         /* DEC interrupts get cleared by mtdec */
338                         return false;
339                 case BOOK3S_IRQPRIO_EXTERNAL_LEVEL:
340                         /* External interrupts get cleared by userspace */
341                         return false;
342         }
343 
344         return true;
345 }
346 
347 int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
348 {
349         unsigned long *pending = &vcpu->arch.pending_exceptions;
350         unsigned long old_pending = vcpu->arch.pending_exceptions;
351         unsigned int priority;
352 
353 #ifdef EXIT_DEBUG
354         if (vcpu->arch.pending_exceptions)
355                 printk(KERN_EMERG "KVM: Check pending: %lx\n", vcpu->arch.pending_exceptions);
356 #endif
357         priority = __ffs(*pending);
358         while (priority < BOOK3S_IRQPRIO_MAX) {
359                 if (kvmppc_book3s_irqprio_deliver(vcpu, priority) &&
360                     clear_irqprio(vcpu, priority)) {
361                         clear_bit(priority, &vcpu->arch.pending_exceptions);
362                         break;
363                 }
364 
365                 priority = find_next_bit(pending,
366                                          BITS_PER_BYTE * sizeof(*pending),
367                                          priority + 1);
368         }
369 
370         /* Tell the guest about our interrupt status */
371         kvmppc_update_int_pending(vcpu, *pending, old_pending);
372 
373         return 0;
374 }
375 EXPORT_SYMBOL_GPL(kvmppc_core_prepare_to_enter);
376 
377 kvm_pfn_t kvmppc_gpa_to_pfn(struct kvm_vcpu *vcpu, gpa_t gpa, bool writing,
378                         bool *writable)
379 {
380         ulong mp_pa = vcpu->arch.magic_page_pa & KVM_PAM;
381         gfn_t gfn = gpa >> PAGE_SHIFT;
382 
383         if (!(kvmppc_get_msr(vcpu) & MSR_SF))
384                 mp_pa = (uint32_t)mp_pa;
385 
386         /* Magic page override */
387         gpa &= ~0xFFFULL;
388         if (unlikely(mp_pa) && unlikely((gpa & KVM_PAM) == mp_pa)) {
389                 ulong shared_page = ((ulong)vcpu->arch.shared) & PAGE_MASK;
390                 kvm_pfn_t pfn;
391 
392                 pfn = (kvm_pfn_t)virt_to_phys((void*)shared_page) >> PAGE_SHIFT;
393                 get_page(pfn_to_page(pfn));
394                 if (writable)
395                         *writable = true;
396                 return pfn;
397         }
398 
399         return gfn_to_pfn_prot(vcpu->kvm, gfn, writing, writable);
400 }
401 EXPORT_SYMBOL_GPL(kvmppc_gpa_to_pfn);
402 
403 int kvmppc_xlate(struct kvm_vcpu *vcpu, ulong eaddr, enum xlate_instdata xlid,
404                  enum xlate_readwrite xlrw, struct kvmppc_pte *pte)
405 {
406         bool data = (xlid == XLATE_DATA);
407         bool iswrite = (xlrw == XLATE_WRITE);
408         int relocated = (kvmppc_get_msr(vcpu) & (data ? MSR_DR : MSR_IR));
409         int r;
410 
411         if (relocated) {
412                 r = vcpu->arch.mmu.xlate(vcpu, eaddr, pte, data, iswrite);
413         } else {
414                 pte->eaddr = eaddr;
415                 pte->raddr = eaddr & KVM_PAM;
416                 pte->vpage = VSID_REAL | eaddr >> 12;
417                 pte->may_read = true;
418                 pte->may_write = true;
419                 pte->may_execute = true;
420                 r = 0;
421 
422                 if ((kvmppc_get_msr(vcpu) & (MSR_IR | MSR_DR)) == MSR_DR &&
423                     !data) {
424                         if ((vcpu->arch.hflags & BOOK3S_HFLAG_SPLIT_HACK) &&
425                             ((eaddr & SPLIT_HACK_MASK) == SPLIT_HACK_OFFS))
426                         pte->raddr &= ~SPLIT_HACK_MASK;
427                 }
428         }
429 
430         return r;
431 }
432 
433 int kvmppc_load_last_inst(struct kvm_vcpu *vcpu, enum instruction_type type,
434                                          u32 *inst)
435 {
436         ulong pc = kvmppc_get_pc(vcpu);
437         int r;
438 
439         if (type == INST_SC)
440                 pc -= 4;
441 
442         r = kvmppc_ld(vcpu, &pc, sizeof(u32), inst, false);
443         if (r == EMULATE_DONE)
444                 return r;
445         else
446                 return EMULATE_AGAIN;
447 }
448 EXPORT_SYMBOL_GPL(kvmppc_load_last_inst);
449 
450 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
451 {
452         return 0;
453 }
454 
455 int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
456 {
457         return 0;
458 }
459 
460 void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
461 {
462 }
463 
464 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
465                                   struct kvm_sregs *sregs)
466 {
467         return vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
468 }
469 
470 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
471                                   struct kvm_sregs *sregs)
472 {
473         return vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
474 }
475 
476 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
477 {
478         int i;
479 
480         regs->pc = kvmppc_get_pc(vcpu);
481         regs->cr = kvmppc_get_cr(vcpu);
482         regs->ctr = kvmppc_get_ctr(vcpu);
483         regs->lr = kvmppc_get_lr(vcpu);
484         regs->xer = kvmppc_get_xer(vcpu);
485         regs->msr = kvmppc_get_msr(vcpu);
486         regs->srr0 = kvmppc_get_srr0(vcpu);
487         regs->srr1 = kvmppc_get_srr1(vcpu);
488         regs->pid = vcpu->arch.pid;
489         regs->sprg0 = kvmppc_get_sprg0(vcpu);
490         regs->sprg1 = kvmppc_get_sprg1(vcpu);
491         regs->sprg2 = kvmppc_get_sprg2(vcpu);
492         regs->sprg3 = kvmppc_get_sprg3(vcpu);
493         regs->sprg4 = kvmppc_get_sprg4(vcpu);
494         regs->sprg5 = kvmppc_get_sprg5(vcpu);
495         regs->sprg6 = kvmppc_get_sprg6(vcpu);
496         regs->sprg7 = kvmppc_get_sprg7(vcpu);
497 
498         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
499                 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
500 
501         return 0;
502 }
503 
504 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
505 {
506         int i;
507 
508         kvmppc_set_pc(vcpu, regs->pc);
509         kvmppc_set_cr(vcpu, regs->cr);
510         kvmppc_set_ctr(vcpu, regs->ctr);
511         kvmppc_set_lr(vcpu, regs->lr);
512         kvmppc_set_xer(vcpu, regs->xer);
513         kvmppc_set_msr(vcpu, regs->msr);
514         kvmppc_set_srr0(vcpu, regs->srr0);
515         kvmppc_set_srr1(vcpu, regs->srr1);
516         kvmppc_set_sprg0(vcpu, regs->sprg0);
517         kvmppc_set_sprg1(vcpu, regs->sprg1);
518         kvmppc_set_sprg2(vcpu, regs->sprg2);
519         kvmppc_set_sprg3(vcpu, regs->sprg3);
520         kvmppc_set_sprg4(vcpu, regs->sprg4);
521         kvmppc_set_sprg5(vcpu, regs->sprg5);
522         kvmppc_set_sprg6(vcpu, regs->sprg6);
523         kvmppc_set_sprg7(vcpu, regs->sprg7);
524 
525         for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
526                 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
527 
528         return 0;
529 }
530 
531 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
532 {
533         return -ENOTSUPP;
534 }
535 
536 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
537 {
538         return -ENOTSUPP;
539 }
540 
541 int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
542                         union kvmppc_one_reg *val)
543 {
544         int r = 0;
545         long int i;
546 
547         r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
548         if (r == -EINVAL) {
549                 r = 0;
550                 switch (id) {
551                 case KVM_REG_PPC_DAR:
552                         *val = get_reg_val(id, kvmppc_get_dar(vcpu));
553                         break;
554                 case KVM_REG_PPC_DSISR:
555                         *val = get_reg_val(id, kvmppc_get_dsisr(vcpu));
556                         break;
557                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
558                         i = id - KVM_REG_PPC_FPR0;
559                         *val = get_reg_val(id, VCPU_FPR(vcpu, i));
560                         break;
561                 case KVM_REG_PPC_FPSCR:
562                         *val = get_reg_val(id, vcpu->arch.fp.fpscr);
563                         break;
564 #ifdef CONFIG_VSX
565                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
566                         if (cpu_has_feature(CPU_FTR_VSX)) {
567                                 i = id - KVM_REG_PPC_VSR0;
568                                 val->vsxval[0] = vcpu->arch.fp.fpr[i][0];
569                                 val->vsxval[1] = vcpu->arch.fp.fpr[i][1];
570                         } else {
571                                 r = -ENXIO;
572                         }
573                         break;
574 #endif /* CONFIG_VSX */
575                 case KVM_REG_PPC_DEBUG_INST:
576                         *val = get_reg_val(id, INS_TW);
577                         break;
578 #ifdef CONFIG_KVM_XICS
579                 case KVM_REG_PPC_ICP_STATE:
580                         if (!vcpu->arch.icp) {
581                                 r = -ENXIO;
582                                 break;
583                         }
584                         *val = get_reg_val(id, kvmppc_xics_get_icp(vcpu));
585                         break;
586 #endif /* CONFIG_KVM_XICS */
587                 case KVM_REG_PPC_FSCR:
588                         *val = get_reg_val(id, vcpu->arch.fscr);
589                         break;
590                 case KVM_REG_PPC_TAR:
591                         *val = get_reg_val(id, vcpu->arch.tar);
592                         break;
593                 case KVM_REG_PPC_EBBHR:
594                         *val = get_reg_val(id, vcpu->arch.ebbhr);
595                         break;
596                 case KVM_REG_PPC_EBBRR:
597                         *val = get_reg_val(id, vcpu->arch.ebbrr);
598                         break;
599                 case KVM_REG_PPC_BESCR:
600                         *val = get_reg_val(id, vcpu->arch.bescr);
601                         break;
602                 case KVM_REG_PPC_IC:
603                         *val = get_reg_val(id, vcpu->arch.ic);
604                         break;
605                 default:
606                         r = -EINVAL;
607                         break;
608                 }
609         }
610 
611         return r;
612 }
613 
614 int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
615                         union kvmppc_one_reg *val)
616 {
617         int r = 0;
618         long int i;
619 
620         r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
621         if (r == -EINVAL) {
622                 r = 0;
623                 switch (id) {
624                 case KVM_REG_PPC_DAR:
625                         kvmppc_set_dar(vcpu, set_reg_val(id, *val));
626                         break;
627                 case KVM_REG_PPC_DSISR:
628                         kvmppc_set_dsisr(vcpu, set_reg_val(id, *val));
629                         break;
630                 case KVM_REG_PPC_FPR0 ... KVM_REG_PPC_FPR31:
631                         i = id - KVM_REG_PPC_FPR0;
632                         VCPU_FPR(vcpu, i) = set_reg_val(id, *val);
633                         break;
634                 case KVM_REG_PPC_FPSCR:
635                         vcpu->arch.fp.fpscr = set_reg_val(id, *val);
636                         break;
637 #ifdef CONFIG_VSX
638                 case KVM_REG_PPC_VSR0 ... KVM_REG_PPC_VSR31:
639                         if (cpu_has_feature(CPU_FTR_VSX)) {
640                                 i = id - KVM_REG_PPC_VSR0;
641                                 vcpu->arch.fp.fpr[i][0] = val->vsxval[0];
642                                 vcpu->arch.fp.fpr[i][1] = val->vsxval[1];
643                         } else {
644                                 r = -ENXIO;
645                         }
646                         break;
647 #endif /* CONFIG_VSX */
648 #ifdef CONFIG_KVM_XICS
649                 case KVM_REG_PPC_ICP_STATE:
650                         if (!vcpu->arch.icp) {
651                                 r = -ENXIO;
652                                 break;
653                         }
654                         r = kvmppc_xics_set_icp(vcpu,
655                                                 set_reg_val(id, *val));
656                         break;
657 #endif /* CONFIG_KVM_XICS */
658                 case KVM_REG_PPC_FSCR:
659                         vcpu->arch.fscr = set_reg_val(id, *val);
660                         break;
661                 case KVM_REG_PPC_TAR:
662                         vcpu->arch.tar = set_reg_val(id, *val);
663                         break;
664                 case KVM_REG_PPC_EBBHR:
665                         vcpu->arch.ebbhr = set_reg_val(id, *val);
666                         break;
667                 case KVM_REG_PPC_EBBRR:
668                         vcpu->arch.ebbrr = set_reg_val(id, *val);
669                         break;
670                 case KVM_REG_PPC_BESCR:
671                         vcpu->arch.bescr = set_reg_val(id, *val);
672                         break;
673                 case KVM_REG_PPC_IC:
674                         vcpu->arch.ic = set_reg_val(id, *val);
675                         break;
676                 default:
677                         r = -EINVAL;
678                         break;
679                 }
680         }
681 
682         return r;
683 }
684 
685 void kvmppc_core_vcpu_load(struct kvm_vcpu *vcpu, int cpu)
686 {
687         vcpu->kvm->arch.kvm_ops->vcpu_load(vcpu, cpu);
688 }
689 
690 void kvmppc_core_vcpu_put(struct kvm_vcpu *vcpu)
691 {
692         vcpu->kvm->arch.kvm_ops->vcpu_put(vcpu);
693 }
694 
695 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u64 msr)
696 {
697         vcpu->kvm->arch.kvm_ops->set_msr(vcpu, msr);
698 }
699 EXPORT_SYMBOL_GPL(kvmppc_set_msr);
700 
701 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
702 {
703         return vcpu->kvm->arch.kvm_ops->vcpu_run(kvm_run, vcpu);
704 }
705 
706 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
707                                   struct kvm_translation *tr)
708 {
709         return 0;
710 }
711 
712 int kvm_arch_vcpu_ioctl_set_guest_debug(struct kvm_vcpu *vcpu,
713                                         struct kvm_guest_debug *dbg)
714 {
715         vcpu->guest_debug = dbg->control;
716         return 0;
717 }
718 
719 void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
720 {
721         kvmppc_core_queue_dec(vcpu);
722         kvm_vcpu_kick(vcpu);
723 }
724 
725 struct kvm_vcpu *kvmppc_core_vcpu_create(struct kvm *kvm, unsigned int id)
726 {
727         return kvm->arch.kvm_ops->vcpu_create(kvm, id);
728 }
729 
730 void kvmppc_core_vcpu_free(struct kvm_vcpu *vcpu)
731 {
732         vcpu->kvm->arch.kvm_ops->vcpu_free(vcpu);
733 }
734 
735 int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
736 {
737         return vcpu->kvm->arch.kvm_ops->check_requests(vcpu);
738 }
739 
740 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
741 {
742         return kvm->arch.kvm_ops->get_dirty_log(kvm, log);
743 }
744 
745 void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *free,
746                               struct kvm_memory_slot *dont)
747 {
748         kvm->arch.kvm_ops->free_memslot(free, dont);
749 }
750 
751 int kvmppc_core_create_memslot(struct kvm *kvm, struct kvm_memory_slot *slot,
752                                unsigned long npages)
753 {
754         return kvm->arch.kvm_ops->create_memslot(slot, npages);
755 }
756 
757 void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
758 {
759         kvm->arch.kvm_ops->flush_memslot(kvm, memslot);
760 }
761 
762 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
763                                 struct kvm_memory_slot *memslot,
764                                 const struct kvm_userspace_memory_region *mem)
765 {
766         return kvm->arch.kvm_ops->prepare_memory_region(kvm, memslot, mem);
767 }
768 
769 void kvmppc_core_commit_memory_region(struct kvm *kvm,
770                                 const struct kvm_userspace_memory_region *mem,
771                                 const struct kvm_memory_slot *old,
772                                 const struct kvm_memory_slot *new)
773 {
774         kvm->arch.kvm_ops->commit_memory_region(kvm, mem, old, new);
775 }
776 
777 int kvm_unmap_hva(struct kvm *kvm, unsigned long hva)
778 {
779         return kvm->arch.kvm_ops->unmap_hva(kvm, hva);
780 }
781 EXPORT_SYMBOL_GPL(kvm_unmap_hva);
782 
783 int kvm_unmap_hva_range(struct kvm *kvm, unsigned long start, unsigned long end)
784 {
785         return kvm->arch.kvm_ops->unmap_hva_range(kvm, start, end);
786 }
787 
788 int kvm_age_hva(struct kvm *kvm, unsigned long start, unsigned long end)
789 {
790         return kvm->arch.kvm_ops->age_hva(kvm, start, end);
791 }
792 
793 int kvm_test_age_hva(struct kvm *kvm, unsigned long hva)
794 {
795         return kvm->arch.kvm_ops->test_age_hva(kvm, hva);
796 }
797 
798 void kvm_set_spte_hva(struct kvm *kvm, unsigned long hva, pte_t pte)
799 {
800         kvm->arch.kvm_ops->set_spte_hva(kvm, hva, pte);
801 }
802 
803 void kvmppc_mmu_destroy(struct kvm_vcpu *vcpu)
804 {
805         vcpu->kvm->arch.kvm_ops->mmu_destroy(vcpu);
806 }
807 
808 int kvmppc_core_init_vm(struct kvm *kvm)
809 {
810 
811 #ifdef CONFIG_PPC64
812         INIT_LIST_HEAD_RCU(&kvm->arch.spapr_tce_tables);
813         INIT_LIST_HEAD(&kvm->arch.rtas_tokens);
814 #endif
815 
816         return kvm->arch.kvm_ops->init_vm(kvm);
817 }
818 
819 void kvmppc_core_destroy_vm(struct kvm *kvm)
820 {
821         kvm->arch.kvm_ops->destroy_vm(kvm);
822 
823 #ifdef CONFIG_PPC64
824         kvmppc_rtas_tokens_free(kvm);
825         WARN_ON(!list_empty(&kvm->arch.spapr_tce_tables));
826 #endif
827 }
828 
829 int kvmppc_h_logical_ci_load(struct kvm_vcpu *vcpu)
830 {
831         unsigned long size = kvmppc_get_gpr(vcpu, 4);
832         unsigned long addr = kvmppc_get_gpr(vcpu, 5);
833         u64 buf;
834         int srcu_idx;
835         int ret;
836 
837         if (!is_power_of_2(size) || (size > sizeof(buf)))
838                 return H_TOO_HARD;
839 
840         srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
841         ret = kvm_io_bus_read(vcpu, KVM_MMIO_BUS, addr, size, &buf);
842         srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
843         if (ret != 0)
844                 return H_TOO_HARD;
845 
846         switch (size) {
847         case 1:
848                 kvmppc_set_gpr(vcpu, 4, *(u8 *)&buf);
849                 break;
850 
851         case 2:
852                 kvmppc_set_gpr(vcpu, 4, be16_to_cpu(*(__be16 *)&buf));
853                 break;
854 
855         case 4:
856                 kvmppc_set_gpr(vcpu, 4, be32_to_cpu(*(__be32 *)&buf));
857                 break;
858 
859         case 8:
860                 kvmppc_set_gpr(vcpu, 4, be64_to_cpu(*(__be64 *)&buf));
861                 break;
862 
863         default:
864                 BUG();
865         }
866 
867         return H_SUCCESS;
868 }
869 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_load);
870 
871 int kvmppc_h_logical_ci_store(struct kvm_vcpu *vcpu)
872 {
873         unsigned long size = kvmppc_get_gpr(vcpu, 4);
874         unsigned long addr = kvmppc_get_gpr(vcpu, 5);
875         unsigned long val = kvmppc_get_gpr(vcpu, 6);
876         u64 buf;
877         int srcu_idx;
878         int ret;
879 
880         switch (size) {
881         case 1:
882                 *(u8 *)&buf = val;
883                 break;
884 
885         case 2:
886                 *(__be16 *)&buf = cpu_to_be16(val);
887                 break;
888 
889         case 4:
890                 *(__be32 *)&buf = cpu_to_be32(val);
891                 break;
892 
893         case 8:
894                 *(__be64 *)&buf = cpu_to_be64(val);
895                 break;
896 
897         default:
898                 return H_TOO_HARD;
899         }
900 
901         srcu_idx = srcu_read_lock(&vcpu->kvm->srcu);
902         ret = kvm_io_bus_write(vcpu, KVM_MMIO_BUS, addr, size, &buf);
903         srcu_read_unlock(&vcpu->kvm->srcu, srcu_idx);
904         if (ret != 0)
905                 return H_TOO_HARD;
906 
907         return H_SUCCESS;
908 }
909 EXPORT_SYMBOL_GPL(kvmppc_h_logical_ci_store);
910 
911 int kvmppc_core_check_processor_compat(void)
912 {
913         /*
914          * We always return 0 for book3s. We check
915          * for compatibility while loading the HV
916          * or PR module
917          */
918         return 0;
919 }
920 
921 int kvmppc_book3s_hcall_implemented(struct kvm *kvm, unsigned long hcall)
922 {
923         return kvm->arch.kvm_ops->hcall_implemented(hcall);
924 }
925 
926 static int kvmppc_book3s_init(void)
927 {
928         int r;
929 
930         r = kvm_init(NULL, sizeof(struct kvm_vcpu), 0, THIS_MODULE);
931         if (r)
932                 return r;
933 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
934         r = kvmppc_book3s_init_pr();
935 #endif
936         return r;
937 
938 }
939 
940 static void kvmppc_book3s_exit(void)
941 {
942 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
943         kvmppc_book3s_exit_pr();
944 #endif
945         kvm_exit();
946 }
947 
948 module_init(kvmppc_book3s_init);
949 module_exit(kvmppc_book3s_exit);
950 
951 /* On 32bit this is our one and only kernel module */
952 #ifdef CONFIG_KVM_BOOK3S_32_HANDLER
953 MODULE_ALIAS_MISCDEV(KVM_MINOR);
954 MODULE_ALIAS("devname:kvm");
955 #endif
956 

~ [ source navigation ] ~ [ diff markup ] ~ [ identifier search ] ~

kernel.org | git.kernel.org | LWN.net | Project Home | Wiki (Japanese) | Wiki (English) | SVN repository | Mail admin

Linux® is a registered trademark of Linus Torvalds in the United States and other countries.
TOMOYO® is a registered trademark of NTT DATA CORPORATION.

osdn.jp