2 * This program is free software; you can redistribute it and/or modify
3 * it under the terms of the GNU General Public License, version 2, as
4 * published by the Free Software Foundation.
6 * This program is distributed in the hope that it will be useful,
7 * but WITHOUT ANY WARRANTY; without even the implied warranty of
8 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
9 * GNU General Public License for more details.
11 * You should have received a copy of the GNU General Public License
12 * along with this program; if not, write to the Free Software
13 * Foundation, 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
15 * Copyright IBM Corp. 2007
16 * Copyright 2010-2011 Freescale Semiconductor, Inc.
18 * Authors: Hollis Blanchard <hollisb@us.ibm.com>
19 * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
22 #include <linux/errno.h>
23 #include <linux/err.h>
24 #include <linux/kvm_host.h>
25 #include <linux/gfp.h>
26 #include <linux/module.h>
27 #include <linux/vmalloc.h>
30 #include <asm/cputable.h>
31 #include <asm/uaccess.h>
32 #include <asm/kvm_ppc.h>
34 #include <asm/cacheflush.h>
38 unsigned long kvmppc_booke_handlers;
40 #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
41 #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
43 struct kvm_stats_debugfs_item debugfs_entries[] = {
44 { "mmio", VCPU_STAT(mmio_exits) },
45 { "dcr", VCPU_STAT(dcr_exits) },
46 { "sig", VCPU_STAT(signal_exits) },
47 { "itlb_r", VCPU_STAT(itlb_real_miss_exits) },
48 { "itlb_v", VCPU_STAT(itlb_virt_miss_exits) },
49 { "dtlb_r", VCPU_STAT(dtlb_real_miss_exits) },
50 { "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits) },
51 { "sysc", VCPU_STAT(syscall_exits) },
52 { "isi", VCPU_STAT(isi_exits) },
53 { "dsi", VCPU_STAT(dsi_exits) },
54 { "inst_emu", VCPU_STAT(emulated_inst_exits) },
55 { "dec", VCPU_STAT(dec_exits) },
56 { "ext_intr", VCPU_STAT(ext_intr_exits) },
57 { "halt_wakeup", VCPU_STAT(halt_wakeup) },
61 /* TODO: use vcpu_printf() */
62 void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
66 printk("pc: %08lx msr: %08llx\n", vcpu->arch.pc, vcpu->arch.shared->msr);
67 printk("lr: %08lx ctr: %08lx\n", vcpu->arch.lr, vcpu->arch.ctr);
68 printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0,
69 vcpu->arch.shared->srr1);
71 printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
73 for (i = 0; i < 32; i += 4) {
74 printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
75 kvmppc_get_gpr(vcpu, i),
76 kvmppc_get_gpr(vcpu, i+1),
77 kvmppc_get_gpr(vcpu, i+2),
78 kvmppc_get_gpr(vcpu, i+3));
83 void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu)
87 kvmppc_save_guest_spe(vcpu);
88 vcpu->arch.shadow_msr &= ~MSR_SPE;
92 static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu)
96 kvmppc_load_guest_spe(vcpu);
97 vcpu->arch.shadow_msr |= MSR_SPE;
101 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
103 if (vcpu->arch.shared->msr & MSR_SPE) {
104 if (!(vcpu->arch.shadow_msr & MSR_SPE))
105 kvmppc_vcpu_enable_spe(vcpu);
106 } else if (vcpu->arch.shadow_msr & MSR_SPE) {
107 kvmppc_vcpu_disable_spe(vcpu);
111 static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
117 * Helper function for "full" MSR writes. No need to call this if only
118 * EE/CE/ME/DE/RI are changing.
120 void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
122 u32 old_msr = vcpu->arch.shared->msr;
124 vcpu->arch.shared->msr = new_msr;
126 kvmppc_mmu_msr_notify(vcpu, old_msr);
128 if (vcpu->arch.shared->msr & MSR_WE) {
129 kvm_vcpu_block(vcpu);
130 kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
133 kvmppc_vcpu_sync_spe(vcpu);
136 static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
137 unsigned int priority)
139 set_bit(priority, &vcpu->arch.pending_exceptions);
142 static void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu,
143 ulong dear_flags, ulong esr_flags)
145 vcpu->arch.queued_dear = dear_flags;
146 vcpu->arch.queued_esr = esr_flags;
147 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
150 static void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
151 ulong dear_flags, ulong esr_flags)
153 vcpu->arch.queued_dear = dear_flags;
154 vcpu->arch.queued_esr = esr_flags;
155 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
158 static void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu,
161 vcpu->arch.queued_esr = esr_flags;
162 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
165 void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
167 vcpu->arch.queued_esr = esr_flags;
168 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
171 void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
173 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
176 int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
178 return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
181 void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
183 clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
186 void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
187 struct kvm_interrupt *irq)
189 unsigned int prio = BOOKE_IRQPRIO_EXTERNAL;
191 if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
192 prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL;
194 kvmppc_booke_queue_irqprio(vcpu, prio);
197 void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu,
198 struct kvm_interrupt *irq)
200 clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions);
201 clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions);
204 /* Deliver the interrupt of the corresponding priority, if possible. */
205 static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
206 unsigned int priority)
209 ulong uninitialized_var(msr_mask);
210 bool update_esr = false, update_dear = false;
211 ulong crit_raw = vcpu->arch.shared->critical;
212 ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
214 bool keep_irq = false;
216 /* Truncate crit indicators in 32 bit mode */
217 if (!(vcpu->arch.shared->msr & MSR_SF)) {
218 crit_raw &= 0xffffffff;
219 crit_r1 &= 0xffffffff;
222 /* Critical section when crit == r1 */
223 crit = (crit_raw == crit_r1);
224 /* ... and we're in supervisor mode */
225 crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
227 if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) {
228 priority = BOOKE_IRQPRIO_EXTERNAL;
233 case BOOKE_IRQPRIO_DTLB_MISS:
234 case BOOKE_IRQPRIO_DATA_STORAGE:
237 case BOOKE_IRQPRIO_INST_STORAGE:
238 case BOOKE_IRQPRIO_PROGRAM:
241 case BOOKE_IRQPRIO_ITLB_MISS:
242 case BOOKE_IRQPRIO_SYSCALL:
243 case BOOKE_IRQPRIO_FP_UNAVAIL:
244 case BOOKE_IRQPRIO_SPE_UNAVAIL:
245 case BOOKE_IRQPRIO_SPE_FP_DATA:
246 case BOOKE_IRQPRIO_SPE_FP_ROUND:
247 case BOOKE_IRQPRIO_AP_UNAVAIL:
248 case BOOKE_IRQPRIO_ALIGNMENT:
250 msr_mask = MSR_CE|MSR_ME|MSR_DE;
252 case BOOKE_IRQPRIO_CRITICAL:
253 case BOOKE_IRQPRIO_WATCHDOG:
254 allowed = vcpu->arch.shared->msr & MSR_CE;
257 case BOOKE_IRQPRIO_MACHINE_CHECK:
258 allowed = vcpu->arch.shared->msr & MSR_ME;
261 case BOOKE_IRQPRIO_EXTERNAL:
262 case BOOKE_IRQPRIO_DECREMENTER:
263 case BOOKE_IRQPRIO_FIT:
264 allowed = vcpu->arch.shared->msr & MSR_EE;
265 allowed = allowed && !crit;
266 msr_mask = MSR_CE|MSR_ME|MSR_DE;
268 case BOOKE_IRQPRIO_DEBUG:
269 allowed = vcpu->arch.shared->msr & MSR_DE;
275 vcpu->arch.shared->srr0 = vcpu->arch.pc;
276 vcpu->arch.shared->srr1 = vcpu->arch.shared->msr;
277 vcpu->arch.pc = vcpu->arch.ivpr | vcpu->arch.ivor[priority];
278 if (update_esr == true)
279 vcpu->arch.esr = vcpu->arch.queued_esr;
280 if (update_dear == true)
281 vcpu->arch.shared->dar = vcpu->arch.queued_dear;
282 kvmppc_set_msr(vcpu, vcpu->arch.shared->msr & msr_mask);
285 clear_bit(priority, &vcpu->arch.pending_exceptions);
291 /* Check pending exceptions and deliver one, if possible. */
292 void kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
294 unsigned long *pending = &vcpu->arch.pending_exceptions;
295 unsigned long old_pending = vcpu->arch.pending_exceptions;
296 unsigned int priority;
298 priority = __ffs(*pending);
299 while (priority <= BOOKE_IRQPRIO_MAX) {
300 if (kvmppc_booke_irqprio_deliver(vcpu, priority))
303 priority = find_next_bit(pending,
304 BITS_PER_BYTE * sizeof(*pending),
308 /* Tell the guest about our interrupt status */
310 vcpu->arch.shared->int_pending = 1;
311 else if (old_pending)
312 vcpu->arch.shared->int_pending = 0;
315 int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
319 if (!vcpu->arch.sane) {
320 kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
326 if (signal_pending(current)) {
327 kvm_run->exit_reason = KVM_EXIT_INTR;
333 ret = __kvmppc_vcpu_run(kvm_run, vcpu);
344 * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
346 int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
347 unsigned int exit_nr)
349 enum emulation_result er;
352 /* update before a new last_exit_type is rewritten */
353 kvmppc_update_timing_stats(vcpu);
357 run->exit_reason = KVM_EXIT_UNKNOWN;
358 run->ready_for_interrupt_injection = 1;
361 case BOOKE_INTERRUPT_MACHINE_CHECK:
362 printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
363 kvmppc_dump_vcpu(vcpu);
367 case BOOKE_INTERRUPT_EXTERNAL:
368 kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
374 case BOOKE_INTERRUPT_DECREMENTER:
375 /* Since we switched IVPR back to the host's value, the host
376 * handled this interrupt the moment we enabled interrupts.
377 * Now we just offer it a chance to reschedule the guest. */
378 kvmppc_account_exit(vcpu, DEC_EXITS);
384 case BOOKE_INTERRUPT_PROGRAM:
385 if (vcpu->arch.shared->msr & MSR_PR) {
386 /* Program traps generated by user-level software must be handled
387 * by the guest kernel. */
388 kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);
390 kvmppc_account_exit(vcpu, USR_PR_INST);
394 er = kvmppc_emulate_instruction(run, vcpu);
397 /* don't overwrite subtypes, just account kvm_stats */
398 kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
399 /* Future optimization: only reload non-volatiles if
400 * they were actually modified by emulation. */
404 run->exit_reason = KVM_EXIT_DCR;
408 /* XXX Deliver Program interrupt to guest. */
409 printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
410 __func__, vcpu->arch.pc, vcpu->arch.last_inst);
411 /* For debugging, encode the failing instruction and
412 * report it to userspace. */
413 run->hw.hardware_exit_reason = ~0ULL << 32;
414 run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
422 case BOOKE_INTERRUPT_FP_UNAVAIL:
423 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
424 kvmppc_account_exit(vcpu, FP_UNAVAIL);
429 case BOOKE_INTERRUPT_SPE_UNAVAIL: {
430 if (vcpu->arch.shared->msr & MSR_SPE)
431 kvmppc_vcpu_enable_spe(vcpu);
433 kvmppc_booke_queue_irqprio(vcpu,
434 BOOKE_IRQPRIO_SPE_UNAVAIL);
439 case BOOKE_INTERRUPT_SPE_FP_DATA:
440 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA);
444 case BOOKE_INTERRUPT_SPE_FP_ROUND:
445 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND);
449 case BOOKE_INTERRUPT_SPE_UNAVAIL:
451 * Guest wants SPE, but host kernel doesn't support it. Send
452 * an "unimplemented operation" program check to the guest.
454 kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV);
459 * These really should never happen without CONFIG_SPE,
460 * as we should never enable the real MSR[SPE] in the guest.
462 case BOOKE_INTERRUPT_SPE_FP_DATA:
463 case BOOKE_INTERRUPT_SPE_FP_ROUND:
464 printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n",
465 __func__, exit_nr, vcpu->arch.pc);
466 run->hw.hardware_exit_reason = exit_nr;
471 case BOOKE_INTERRUPT_DATA_STORAGE:
472 kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear,
473 vcpu->arch.fault_esr);
474 kvmppc_account_exit(vcpu, DSI_EXITS);
478 case BOOKE_INTERRUPT_INST_STORAGE:
479 kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr);
480 kvmppc_account_exit(vcpu, ISI_EXITS);
484 case BOOKE_INTERRUPT_SYSCALL:
485 if (!(vcpu->arch.shared->msr & MSR_PR) &&
486 (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
487 /* KVM PV hypercalls */
488 kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
492 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
494 kvmppc_account_exit(vcpu, SYSCALL_EXITS);
498 case BOOKE_INTERRUPT_DTLB_MISS: {
499 unsigned long eaddr = vcpu->arch.fault_dear;
504 #ifdef CONFIG_KVM_E500
505 if (!(vcpu->arch.shared->msr & MSR_PR) &&
506 (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
507 kvmppc_map_magic(vcpu);
508 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
515 /* Check the guest TLB. */
516 gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
517 if (gtlb_index < 0) {
518 /* The guest didn't have a mapping for it. */
519 kvmppc_core_queue_dtlb_miss(vcpu,
520 vcpu->arch.fault_dear,
521 vcpu->arch.fault_esr);
522 kvmppc_mmu_dtlb_miss(vcpu);
523 kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
528 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
529 gfn = gpaddr >> PAGE_SHIFT;
531 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
532 /* The guest TLB had a mapping, but the shadow TLB
533 * didn't, and it is RAM. This could be because:
534 * a) the entry is mapping the host kernel, or
535 * b) the guest used a large mapping which we're faking
536 * Either way, we need to satisfy the fault without
537 * invoking the guest. */
538 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
539 kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
542 /* Guest has mapped and accessed a page which is not
544 vcpu->arch.paddr_accessed = gpaddr;
545 r = kvmppc_emulate_mmio(run, vcpu);
546 kvmppc_account_exit(vcpu, MMIO_EXITS);
552 case BOOKE_INTERRUPT_ITLB_MISS: {
553 unsigned long eaddr = vcpu->arch.pc;
560 /* Check the guest TLB. */
561 gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
562 if (gtlb_index < 0) {
563 /* The guest didn't have a mapping for it. */
564 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
565 kvmppc_mmu_itlb_miss(vcpu);
566 kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
570 kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
572 gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
573 gfn = gpaddr >> PAGE_SHIFT;
575 if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
576 /* The guest TLB had a mapping, but the shadow TLB
577 * didn't. This could be because:
578 * a) the entry is mapping the host kernel, or
579 * b) the guest used a large mapping which we're faking
580 * Either way, we need to satisfy the fault without
581 * invoking the guest. */
582 kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
584 /* Guest mapped and leaped at non-RAM! */
585 kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
591 case BOOKE_INTERRUPT_DEBUG: {
594 vcpu->arch.pc = mfspr(SPRN_CSRR0);
596 /* clear IAC events in DBSR register */
597 dbsr = mfspr(SPRN_DBSR);
598 dbsr &= DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4;
599 mtspr(SPRN_DBSR, dbsr);
601 run->exit_reason = KVM_EXIT_DEBUG;
602 kvmppc_account_exit(vcpu, DEBUG_EXITS);
608 printk(KERN_EMERG "exit_nr %d\n", exit_nr);
614 kvmppc_core_prepare_to_enter(vcpu);
616 if (!(r & RESUME_HOST)) {
617 /* To avoid clobbering exit_reason, only check for signals if
618 * we aren't already exiting to userspace for some other
620 if (signal_pending(current)) {
621 run->exit_reason = KVM_EXIT_INTR;
622 r = (-EINTR << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
623 kvmppc_account_exit(vcpu, SIGNAL_EXITS);
630 /* Initial guest state: 16MB mapping 0 -> 0, PC = 0, MSR = 0, R1 = 16MB */
631 int kvm_arch_vcpu_setup(struct kvm_vcpu *vcpu)
637 vcpu->arch.shared->msr = 0;
638 vcpu->arch.shadow_msr = MSR_USER | MSR_DE | MSR_IS | MSR_DS;
639 kvmppc_set_gpr(vcpu, 1, (16<<20) - 8); /* -8 for the callee-save LR slot */
641 vcpu->arch.shadow_pid = 1;
643 /* Eye-catching numbers so we know if the guest takes an interrupt
644 * before it's programmed its own IVPR/IVORs. */
645 vcpu->arch.ivpr = 0x55550000;
646 for (i = 0; i < BOOKE_IRQPRIO_MAX; i++)
647 vcpu->arch.ivor[i] = 0x7700 | i * 4;
649 kvmppc_init_timing_stats(vcpu);
651 r = kvmppc_core_vcpu_setup(vcpu);
652 kvmppc_sanity_check(vcpu);
656 int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
660 regs->pc = vcpu->arch.pc;
661 regs->cr = kvmppc_get_cr(vcpu);
662 regs->ctr = vcpu->arch.ctr;
663 regs->lr = vcpu->arch.lr;
664 regs->xer = kvmppc_get_xer(vcpu);
665 regs->msr = vcpu->arch.shared->msr;
666 regs->srr0 = vcpu->arch.shared->srr0;
667 regs->srr1 = vcpu->arch.shared->srr1;
668 regs->pid = vcpu->arch.pid;
669 regs->sprg0 = vcpu->arch.shared->sprg0;
670 regs->sprg1 = vcpu->arch.shared->sprg1;
671 regs->sprg2 = vcpu->arch.shared->sprg2;
672 regs->sprg3 = vcpu->arch.shared->sprg3;
673 regs->sprg4 = vcpu->arch.sprg4;
674 regs->sprg5 = vcpu->arch.sprg5;
675 regs->sprg6 = vcpu->arch.sprg6;
676 regs->sprg7 = vcpu->arch.sprg7;
678 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
679 regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
684 int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
688 vcpu->arch.pc = regs->pc;
689 kvmppc_set_cr(vcpu, regs->cr);
690 vcpu->arch.ctr = regs->ctr;
691 vcpu->arch.lr = regs->lr;
692 kvmppc_set_xer(vcpu, regs->xer);
693 kvmppc_set_msr(vcpu, regs->msr);
694 vcpu->arch.shared->srr0 = regs->srr0;
695 vcpu->arch.shared->srr1 = regs->srr1;
696 kvmppc_set_pid(vcpu, regs->pid);
697 vcpu->arch.shared->sprg0 = regs->sprg0;
698 vcpu->arch.shared->sprg1 = regs->sprg1;
699 vcpu->arch.shared->sprg2 = regs->sprg2;
700 vcpu->arch.shared->sprg3 = regs->sprg3;
701 vcpu->arch.sprg4 = regs->sprg4;
702 vcpu->arch.sprg5 = regs->sprg5;
703 vcpu->arch.sprg6 = regs->sprg6;
704 vcpu->arch.sprg7 = regs->sprg7;
706 for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
707 kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
712 static void get_sregs_base(struct kvm_vcpu *vcpu,
713 struct kvm_sregs *sregs)
717 sregs->u.e.features |= KVM_SREGS_E_BASE;
719 sregs->u.e.csrr0 = vcpu->arch.csrr0;
720 sregs->u.e.csrr1 = vcpu->arch.csrr1;
721 sregs->u.e.mcsr = vcpu->arch.mcsr;
722 sregs->u.e.esr = vcpu->arch.esr;
723 sregs->u.e.dear = vcpu->arch.shared->dar;
724 sregs->u.e.tsr = vcpu->arch.tsr;
725 sregs->u.e.tcr = vcpu->arch.tcr;
726 sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
728 sregs->u.e.vrsave = vcpu->arch.vrsave;
731 static int set_sregs_base(struct kvm_vcpu *vcpu,
732 struct kvm_sregs *sregs)
734 if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
737 vcpu->arch.csrr0 = sregs->u.e.csrr0;
738 vcpu->arch.csrr1 = sregs->u.e.csrr1;
739 vcpu->arch.mcsr = sregs->u.e.mcsr;
740 vcpu->arch.esr = sregs->u.e.esr;
741 vcpu->arch.shared->dar = sregs->u.e.dear;
742 vcpu->arch.vrsave = sregs->u.e.vrsave;
743 vcpu->arch.tcr = sregs->u.e.tcr;
745 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC)
746 vcpu->arch.dec = sregs->u.e.dec;
748 kvmppc_emulate_dec(vcpu);
750 if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR) {
752 * FIXME: existing KVM timer handling is incomplete.
753 * TSR cannot be read by the guest, and its value in
754 * vcpu->arch is always zero. For now, just handle
755 * the case where the caller is trying to inject a
756 * decrementer interrupt.
759 if ((sregs->u.e.tsr & TSR_DIS) &&
760 (vcpu->arch.tcr & TCR_DIE))
761 kvmppc_core_queue_dec(vcpu);
767 static void get_sregs_arch206(struct kvm_vcpu *vcpu,
768 struct kvm_sregs *sregs)
770 sregs->u.e.features |= KVM_SREGS_E_ARCH206;
772 sregs->u.e.pir = vcpu->vcpu_id;
773 sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
774 sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
775 sregs->u.e.decar = vcpu->arch.decar;
776 sregs->u.e.ivpr = vcpu->arch.ivpr;
779 static int set_sregs_arch206(struct kvm_vcpu *vcpu,
780 struct kvm_sregs *sregs)
782 if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
785 if (sregs->u.e.pir != vcpu->vcpu_id)
788 vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
789 vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
790 vcpu->arch.decar = sregs->u.e.decar;
791 vcpu->arch.ivpr = sregs->u.e.ivpr;
796 void kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
798 sregs->u.e.features |= KVM_SREGS_E_IVOR;
800 sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
801 sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
802 sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
803 sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
804 sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
805 sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
806 sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
807 sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
808 sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
809 sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
810 sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
811 sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
812 sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
813 sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
814 sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
815 sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
818 int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
820 if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
823 vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
824 vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
825 vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
826 vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
827 vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
828 vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
829 vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
830 vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
831 vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
832 vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
833 vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
834 vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
835 vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
836 vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
837 vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
838 vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
843 int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
844 struct kvm_sregs *sregs)
846 sregs->pvr = vcpu->arch.pvr;
848 get_sregs_base(vcpu, sregs);
849 get_sregs_arch206(vcpu, sregs);
850 kvmppc_core_get_sregs(vcpu, sregs);
854 int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
855 struct kvm_sregs *sregs)
859 if (vcpu->arch.pvr != sregs->pvr)
862 ret = set_sregs_base(vcpu, sregs);
866 ret = set_sregs_arch206(vcpu, sregs);
870 return kvmppc_core_set_sregs(vcpu, sregs);
873 int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
878 int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
883 int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
884 struct kvm_translation *tr)
888 r = kvmppc_core_vcpu_translate(vcpu, tr);
892 int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
897 int kvmppc_core_prepare_memory_region(struct kvm *kvm,
898 struct kvm_userspace_memory_region *mem)
903 void kvmppc_core_commit_memory_region(struct kvm *kvm,
904 struct kvm_userspace_memory_region *mem)
908 int kvmppc_core_init_vm(struct kvm *kvm)
913 void kvmppc_core_destroy_vm(struct kvm *kvm)
917 int __init kvmppc_booke_init(void)
919 unsigned long ivor[16];
920 unsigned long max_ivor = 0;
923 /* We install our own exception handlers by hijacking IVPR. IVPR must
924 * be 16-bit aligned, so we need a 64KB allocation. */
925 kvmppc_booke_handlers = __get_free_pages(GFP_KERNEL | __GFP_ZERO,
927 if (!kvmppc_booke_handlers)
930 /* XXX make sure our handlers are smaller than Linux's */
932 /* Copy our interrupt handlers to match host IVORs. That way we don't
933 * have to swap the IVORs on every guest/host transition. */
934 ivor[0] = mfspr(SPRN_IVOR0);
935 ivor[1] = mfspr(SPRN_IVOR1);
936 ivor[2] = mfspr(SPRN_IVOR2);
937 ivor[3] = mfspr(SPRN_IVOR3);
938 ivor[4] = mfspr(SPRN_IVOR4);
939 ivor[5] = mfspr(SPRN_IVOR5);
940 ivor[6] = mfspr(SPRN_IVOR6);
941 ivor[7] = mfspr(SPRN_IVOR7);
942 ivor[8] = mfspr(SPRN_IVOR8);
943 ivor[9] = mfspr(SPRN_IVOR9);
944 ivor[10] = mfspr(SPRN_IVOR10);
945 ivor[11] = mfspr(SPRN_IVOR11);
946 ivor[12] = mfspr(SPRN_IVOR12);
947 ivor[13] = mfspr(SPRN_IVOR13);
948 ivor[14] = mfspr(SPRN_IVOR14);
949 ivor[15] = mfspr(SPRN_IVOR15);
951 for (i = 0; i < 16; i++) {
952 if (ivor[i] > max_ivor)
955 memcpy((void *)kvmppc_booke_handlers + ivor[i],
956 kvmppc_handlers_start + i * kvmppc_handler_len,
959 flush_icache_range(kvmppc_booke_handlers,
960 kvmppc_booke_handlers + max_ivor + kvmppc_handler_len);
965 void __exit kvmppc_booke_exit(void)
967 free_pages(kvmppc_booke_handlers, VCPU_SIZE_ORDER);