/arch/powerpc/kvm/booke.c
http://github.com/mirrors/linux · C · 2194 lines · 1652 code · 305 blank · 237 comment · 178 complexity · a3dd91e1aaa4135994bccecd8e487d24 MD5 · raw file
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- // SPDX-License-Identifier: GPL-2.0-only
- /*
- *
- * Copyright IBM Corp. 2007
- * Copyright 2010-2011 Freescale Semiconductor, Inc.
- *
- * Authors: Hollis Blanchard <hollisb@us.ibm.com>
- * Christian Ehrhardt <ehrhardt@linux.vnet.ibm.com>
- * Scott Wood <scottwood@freescale.com>
- * Varun Sethi <varun.sethi@freescale.com>
- */
- #include <linux/errno.h>
- #include <linux/err.h>
- #include <linux/kvm_host.h>
- #include <linux/gfp.h>
- #include <linux/module.h>
- #include <linux/vmalloc.h>
- #include <linux/fs.h>
- #include <asm/cputable.h>
- #include <linux/uaccess.h>
- #include <asm/kvm_ppc.h>
- #include <asm/cacheflush.h>
- #include <asm/dbell.h>
- #include <asm/hw_irq.h>
- #include <asm/irq.h>
- #include <asm/time.h>
- #include "timing.h"
- #include "booke.h"
- #define CREATE_TRACE_POINTS
- #include "trace_booke.h"
- unsigned long kvmppc_booke_handlers;
- #define VM_STAT(x) offsetof(struct kvm, stat.x), KVM_STAT_VM
- #define VCPU_STAT(x) offsetof(struct kvm_vcpu, stat.x), KVM_STAT_VCPU
- struct kvm_stats_debugfs_item debugfs_entries[] = {
- { "mmio", VCPU_STAT(mmio_exits) },
- { "sig", VCPU_STAT(signal_exits) },
- { "itlb_r", VCPU_STAT(itlb_real_miss_exits) },
- { "itlb_v", VCPU_STAT(itlb_virt_miss_exits) },
- { "dtlb_r", VCPU_STAT(dtlb_real_miss_exits) },
- { "dtlb_v", VCPU_STAT(dtlb_virt_miss_exits) },
- { "sysc", VCPU_STAT(syscall_exits) },
- { "isi", VCPU_STAT(isi_exits) },
- { "dsi", VCPU_STAT(dsi_exits) },
- { "inst_emu", VCPU_STAT(emulated_inst_exits) },
- { "dec", VCPU_STAT(dec_exits) },
- { "ext_intr", VCPU_STAT(ext_intr_exits) },
- { "halt_successful_poll", VCPU_STAT(halt_successful_poll) },
- { "halt_attempted_poll", VCPU_STAT(halt_attempted_poll) },
- { "halt_poll_invalid", VCPU_STAT(halt_poll_invalid) },
- { "halt_wakeup", VCPU_STAT(halt_wakeup) },
- { "doorbell", VCPU_STAT(dbell_exits) },
- { "guest doorbell", VCPU_STAT(gdbell_exits) },
- { "remote_tlb_flush", VM_STAT(remote_tlb_flush) },
- { NULL }
- };
- /* TODO: use vcpu_printf() */
- void kvmppc_dump_vcpu(struct kvm_vcpu *vcpu)
- {
- int i;
- printk("pc: %08lx msr: %08llx\n", vcpu->arch.regs.nip,
- vcpu->arch.shared->msr);
- printk("lr: %08lx ctr: %08lx\n", vcpu->arch.regs.link,
- vcpu->arch.regs.ctr);
- printk("srr0: %08llx srr1: %08llx\n", vcpu->arch.shared->srr0,
- vcpu->arch.shared->srr1);
- printk("exceptions: %08lx\n", vcpu->arch.pending_exceptions);
- for (i = 0; i < 32; i += 4) {
- printk("gpr%02d: %08lx %08lx %08lx %08lx\n", i,
- kvmppc_get_gpr(vcpu, i),
- kvmppc_get_gpr(vcpu, i+1),
- kvmppc_get_gpr(vcpu, i+2),
- kvmppc_get_gpr(vcpu, i+3));
- }
- }
- #ifdef CONFIG_SPE
- void kvmppc_vcpu_disable_spe(struct kvm_vcpu *vcpu)
- {
- preempt_disable();
- enable_kernel_spe();
- kvmppc_save_guest_spe(vcpu);
- disable_kernel_spe();
- vcpu->arch.shadow_msr &= ~MSR_SPE;
- preempt_enable();
- }
- static void kvmppc_vcpu_enable_spe(struct kvm_vcpu *vcpu)
- {
- preempt_disable();
- enable_kernel_spe();
- kvmppc_load_guest_spe(vcpu);
- disable_kernel_spe();
- vcpu->arch.shadow_msr |= MSR_SPE;
- preempt_enable();
- }
- static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
- {
- if (vcpu->arch.shared->msr & MSR_SPE) {
- if (!(vcpu->arch.shadow_msr & MSR_SPE))
- kvmppc_vcpu_enable_spe(vcpu);
- } else if (vcpu->arch.shadow_msr & MSR_SPE) {
- kvmppc_vcpu_disable_spe(vcpu);
- }
- }
- #else
- static void kvmppc_vcpu_sync_spe(struct kvm_vcpu *vcpu)
- {
- }
- #endif
- /*
- * Load up guest vcpu FP state if it's needed.
- * It also set the MSR_FP in thread so that host know
- * we're holding FPU, and then host can help to save
- * guest vcpu FP state if other threads require to use FPU.
- * This simulates an FP unavailable fault.
- *
- * It requires to be called with preemption disabled.
- */
- static inline void kvmppc_load_guest_fp(struct kvm_vcpu *vcpu)
- {
- #ifdef CONFIG_PPC_FPU
- if (!(current->thread.regs->msr & MSR_FP)) {
- enable_kernel_fp();
- load_fp_state(&vcpu->arch.fp);
- disable_kernel_fp();
- current->thread.fp_save_area = &vcpu->arch.fp;
- current->thread.regs->msr |= MSR_FP;
- }
- #endif
- }
- /*
- * Save guest vcpu FP state into thread.
- * It requires to be called with preemption disabled.
- */
- static inline void kvmppc_save_guest_fp(struct kvm_vcpu *vcpu)
- {
- #ifdef CONFIG_PPC_FPU
- if (current->thread.regs->msr & MSR_FP)
- giveup_fpu(current);
- current->thread.fp_save_area = NULL;
- #endif
- }
- static void kvmppc_vcpu_sync_fpu(struct kvm_vcpu *vcpu)
- {
- #if defined(CONFIG_PPC_FPU) && !defined(CONFIG_KVM_BOOKE_HV)
- /* We always treat the FP bit as enabled from the host
- perspective, so only need to adjust the shadow MSR */
- vcpu->arch.shadow_msr &= ~MSR_FP;
- vcpu->arch.shadow_msr |= vcpu->arch.shared->msr & MSR_FP;
- #endif
- }
- /*
- * Simulate AltiVec unavailable fault to load guest state
- * from thread to AltiVec unit.
- * It requires to be called with preemption disabled.
- */
- static inline void kvmppc_load_guest_altivec(struct kvm_vcpu *vcpu)
- {
- #ifdef CONFIG_ALTIVEC
- if (cpu_has_feature(CPU_FTR_ALTIVEC)) {
- if (!(current->thread.regs->msr & MSR_VEC)) {
- enable_kernel_altivec();
- load_vr_state(&vcpu->arch.vr);
- disable_kernel_altivec();
- current->thread.vr_save_area = &vcpu->arch.vr;
- current->thread.regs->msr |= MSR_VEC;
- }
- }
- #endif
- }
- /*
- * Save guest vcpu AltiVec state into thread.
- * It requires to be called with preemption disabled.
- */
- static inline void kvmppc_save_guest_altivec(struct kvm_vcpu *vcpu)
- {
- #ifdef CONFIG_ALTIVEC
- if (cpu_has_feature(CPU_FTR_ALTIVEC)) {
- if (current->thread.regs->msr & MSR_VEC)
- giveup_altivec(current);
- current->thread.vr_save_area = NULL;
- }
- #endif
- }
- static void kvmppc_vcpu_sync_debug(struct kvm_vcpu *vcpu)
- {
- /* Synchronize guest's desire to get debug interrupts into shadow MSR */
- #ifndef CONFIG_KVM_BOOKE_HV
- vcpu->arch.shadow_msr &= ~MSR_DE;
- vcpu->arch.shadow_msr |= vcpu->arch.shared->msr & MSR_DE;
- #endif
- /* Force enable debug interrupts when user space wants to debug */
- if (vcpu->guest_debug) {
- #ifdef CONFIG_KVM_BOOKE_HV
- /*
- * Since there is no shadow MSR, sync MSR_DE into the guest
- * visible MSR.
- */
- vcpu->arch.shared->msr |= MSR_DE;
- #else
- vcpu->arch.shadow_msr |= MSR_DE;
- vcpu->arch.shared->msr &= ~MSR_DE;
- #endif
- }
- }
- /*
- * Helper function for "full" MSR writes. No need to call this if only
- * EE/CE/ME/DE/RI are changing.
- */
- void kvmppc_set_msr(struct kvm_vcpu *vcpu, u32 new_msr)
- {
- u32 old_msr = vcpu->arch.shared->msr;
- #ifdef CONFIG_KVM_BOOKE_HV
- new_msr |= MSR_GS;
- #endif
- vcpu->arch.shared->msr = new_msr;
- kvmppc_mmu_msr_notify(vcpu, old_msr);
- kvmppc_vcpu_sync_spe(vcpu);
- kvmppc_vcpu_sync_fpu(vcpu);
- kvmppc_vcpu_sync_debug(vcpu);
- }
- static void kvmppc_booke_queue_irqprio(struct kvm_vcpu *vcpu,
- unsigned int priority)
- {
- trace_kvm_booke_queue_irqprio(vcpu, priority);
- set_bit(priority, &vcpu->arch.pending_exceptions);
- }
- void kvmppc_core_queue_dtlb_miss(struct kvm_vcpu *vcpu,
- ulong dear_flags, ulong esr_flags)
- {
- vcpu->arch.queued_dear = dear_flags;
- vcpu->arch.queued_esr = esr_flags;
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DTLB_MISS);
- }
- void kvmppc_core_queue_data_storage(struct kvm_vcpu *vcpu,
- ulong dear_flags, ulong esr_flags)
- {
- vcpu->arch.queued_dear = dear_flags;
- vcpu->arch.queued_esr = esr_flags;
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DATA_STORAGE);
- }
- void kvmppc_core_queue_itlb_miss(struct kvm_vcpu *vcpu)
- {
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
- }
- void kvmppc_core_queue_inst_storage(struct kvm_vcpu *vcpu, ulong esr_flags)
- {
- vcpu->arch.queued_esr = esr_flags;
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_INST_STORAGE);
- }
- static void kvmppc_core_queue_alignment(struct kvm_vcpu *vcpu, ulong dear_flags,
- ulong esr_flags)
- {
- vcpu->arch.queued_dear = dear_flags;
- vcpu->arch.queued_esr = esr_flags;
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALIGNMENT);
- }
- void kvmppc_core_queue_program(struct kvm_vcpu *vcpu, ulong esr_flags)
- {
- vcpu->arch.queued_esr = esr_flags;
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_PROGRAM);
- }
- void kvmppc_core_queue_fpunavail(struct kvm_vcpu *vcpu)
- {
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
- }
- #ifdef CONFIG_ALTIVEC
- void kvmppc_core_queue_vec_unavail(struct kvm_vcpu *vcpu)
- {
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_UNAVAIL);
- }
- #endif
- void kvmppc_core_queue_dec(struct kvm_vcpu *vcpu)
- {
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DECREMENTER);
- }
- int kvmppc_core_pending_dec(struct kvm_vcpu *vcpu)
- {
- return test_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
- }
- void kvmppc_core_dequeue_dec(struct kvm_vcpu *vcpu)
- {
- clear_bit(BOOKE_IRQPRIO_DECREMENTER, &vcpu->arch.pending_exceptions);
- }
- void kvmppc_core_queue_external(struct kvm_vcpu *vcpu,
- struct kvm_interrupt *irq)
- {
- unsigned int prio = BOOKE_IRQPRIO_EXTERNAL;
- if (irq->irq == KVM_INTERRUPT_SET_LEVEL)
- prio = BOOKE_IRQPRIO_EXTERNAL_LEVEL;
- kvmppc_booke_queue_irqprio(vcpu, prio);
- }
- void kvmppc_core_dequeue_external(struct kvm_vcpu *vcpu)
- {
- clear_bit(BOOKE_IRQPRIO_EXTERNAL, &vcpu->arch.pending_exceptions);
- clear_bit(BOOKE_IRQPRIO_EXTERNAL_LEVEL, &vcpu->arch.pending_exceptions);
- }
- static void kvmppc_core_queue_watchdog(struct kvm_vcpu *vcpu)
- {
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_WATCHDOG);
- }
- static void kvmppc_core_dequeue_watchdog(struct kvm_vcpu *vcpu)
- {
- clear_bit(BOOKE_IRQPRIO_WATCHDOG, &vcpu->arch.pending_exceptions);
- }
- void kvmppc_core_queue_debug(struct kvm_vcpu *vcpu)
- {
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_DEBUG);
- }
- void kvmppc_core_dequeue_debug(struct kvm_vcpu *vcpu)
- {
- clear_bit(BOOKE_IRQPRIO_DEBUG, &vcpu->arch.pending_exceptions);
- }
- static void set_guest_srr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
- {
- kvmppc_set_srr0(vcpu, srr0);
- kvmppc_set_srr1(vcpu, srr1);
- }
- static void set_guest_csrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
- {
- vcpu->arch.csrr0 = srr0;
- vcpu->arch.csrr1 = srr1;
- }
- static void set_guest_dsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
- {
- if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC)) {
- vcpu->arch.dsrr0 = srr0;
- vcpu->arch.dsrr1 = srr1;
- } else {
- set_guest_csrr(vcpu, srr0, srr1);
- }
- }
- static void set_guest_mcsrr(struct kvm_vcpu *vcpu, unsigned long srr0, u32 srr1)
- {
- vcpu->arch.mcsrr0 = srr0;
- vcpu->arch.mcsrr1 = srr1;
- }
- /* Deliver the interrupt of the corresponding priority, if possible. */
- static int kvmppc_booke_irqprio_deliver(struct kvm_vcpu *vcpu,
- unsigned int priority)
- {
- int allowed = 0;
- ulong msr_mask = 0;
- bool update_esr = false, update_dear = false, update_epr = false;
- ulong crit_raw = vcpu->arch.shared->critical;
- ulong crit_r1 = kvmppc_get_gpr(vcpu, 1);
- bool crit;
- bool keep_irq = false;
- enum int_class int_class;
- ulong new_msr = vcpu->arch.shared->msr;
- /* Truncate crit indicators in 32 bit mode */
- if (!(vcpu->arch.shared->msr & MSR_SF)) {
- crit_raw &= 0xffffffff;
- crit_r1 &= 0xffffffff;
- }
- /* Critical section when crit == r1 */
- crit = (crit_raw == crit_r1);
- /* ... and we're in supervisor mode */
- crit = crit && !(vcpu->arch.shared->msr & MSR_PR);
- if (priority == BOOKE_IRQPRIO_EXTERNAL_LEVEL) {
- priority = BOOKE_IRQPRIO_EXTERNAL;
- keep_irq = true;
- }
- if ((priority == BOOKE_IRQPRIO_EXTERNAL) && vcpu->arch.epr_flags)
- update_epr = true;
- switch (priority) {
- case BOOKE_IRQPRIO_DTLB_MISS:
- case BOOKE_IRQPRIO_DATA_STORAGE:
- case BOOKE_IRQPRIO_ALIGNMENT:
- update_dear = true;
- fallthrough;
- case BOOKE_IRQPRIO_INST_STORAGE:
- case BOOKE_IRQPRIO_PROGRAM:
- update_esr = true;
- fallthrough;
- case BOOKE_IRQPRIO_ITLB_MISS:
- case BOOKE_IRQPRIO_SYSCALL:
- case BOOKE_IRQPRIO_FP_UNAVAIL:
- #ifdef CONFIG_SPE_POSSIBLE
- case BOOKE_IRQPRIO_SPE_UNAVAIL:
- case BOOKE_IRQPRIO_SPE_FP_DATA:
- case BOOKE_IRQPRIO_SPE_FP_ROUND:
- #endif
- #ifdef CONFIG_ALTIVEC
- case BOOKE_IRQPRIO_ALTIVEC_UNAVAIL:
- case BOOKE_IRQPRIO_ALTIVEC_ASSIST:
- #endif
- case BOOKE_IRQPRIO_AP_UNAVAIL:
- allowed = 1;
- msr_mask = MSR_CE | MSR_ME | MSR_DE;
- int_class = INT_CLASS_NONCRIT;
- break;
- case BOOKE_IRQPRIO_WATCHDOG:
- case BOOKE_IRQPRIO_CRITICAL:
- case BOOKE_IRQPRIO_DBELL_CRIT:
- allowed = vcpu->arch.shared->msr & MSR_CE;
- allowed = allowed && !crit;
- msr_mask = MSR_ME;
- int_class = INT_CLASS_CRIT;
- break;
- case BOOKE_IRQPRIO_MACHINE_CHECK:
- allowed = vcpu->arch.shared->msr & MSR_ME;
- allowed = allowed && !crit;
- int_class = INT_CLASS_MC;
- break;
- case BOOKE_IRQPRIO_DECREMENTER:
- case BOOKE_IRQPRIO_FIT:
- keep_irq = true;
- fallthrough;
- case BOOKE_IRQPRIO_EXTERNAL:
- case BOOKE_IRQPRIO_DBELL:
- allowed = vcpu->arch.shared->msr & MSR_EE;
- allowed = allowed && !crit;
- msr_mask = MSR_CE | MSR_ME | MSR_DE;
- int_class = INT_CLASS_NONCRIT;
- break;
- case BOOKE_IRQPRIO_DEBUG:
- allowed = vcpu->arch.shared->msr & MSR_DE;
- allowed = allowed && !crit;
- msr_mask = MSR_ME;
- if (cpu_has_feature(CPU_FTR_DEBUG_LVL_EXC))
- int_class = INT_CLASS_DBG;
- else
- int_class = INT_CLASS_CRIT;
- break;
- }
- if (allowed) {
- switch (int_class) {
- case INT_CLASS_NONCRIT:
- set_guest_srr(vcpu, vcpu->arch.regs.nip,
- vcpu->arch.shared->msr);
- break;
- case INT_CLASS_CRIT:
- set_guest_csrr(vcpu, vcpu->arch.regs.nip,
- vcpu->arch.shared->msr);
- break;
- case INT_CLASS_DBG:
- set_guest_dsrr(vcpu, vcpu->arch.regs.nip,
- vcpu->arch.shared->msr);
- break;
- case INT_CLASS_MC:
- set_guest_mcsrr(vcpu, vcpu->arch.regs.nip,
- vcpu->arch.shared->msr);
- break;
- }
- vcpu->arch.regs.nip = vcpu->arch.ivpr |
- vcpu->arch.ivor[priority];
- if (update_esr == true)
- kvmppc_set_esr(vcpu, vcpu->arch.queued_esr);
- if (update_dear == true)
- kvmppc_set_dar(vcpu, vcpu->arch.queued_dear);
- if (update_epr == true) {
- if (vcpu->arch.epr_flags & KVMPPC_EPR_USER)
- kvm_make_request(KVM_REQ_EPR_EXIT, vcpu);
- else if (vcpu->arch.epr_flags & KVMPPC_EPR_KERNEL) {
- BUG_ON(vcpu->arch.irq_type != KVMPPC_IRQ_MPIC);
- kvmppc_mpic_set_epr(vcpu);
- }
- }
- new_msr &= msr_mask;
- #if defined(CONFIG_64BIT)
- if (vcpu->arch.epcr & SPRN_EPCR_ICM)
- new_msr |= MSR_CM;
- #endif
- kvmppc_set_msr(vcpu, new_msr);
- if (!keep_irq)
- clear_bit(priority, &vcpu->arch.pending_exceptions);
- }
- #ifdef CONFIG_KVM_BOOKE_HV
- /*
- * If an interrupt is pending but masked, raise a guest doorbell
- * so that we are notified when the guest enables the relevant
- * MSR bit.
- */
- if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_EE)
- kvmppc_set_pending_interrupt(vcpu, INT_CLASS_NONCRIT);
- if (vcpu->arch.pending_exceptions & BOOKE_IRQMASK_CE)
- kvmppc_set_pending_interrupt(vcpu, INT_CLASS_CRIT);
- if (vcpu->arch.pending_exceptions & BOOKE_IRQPRIO_MACHINE_CHECK)
- kvmppc_set_pending_interrupt(vcpu, INT_CLASS_MC);
- #endif
- return allowed;
- }
- /*
- * Return the number of jiffies until the next timeout. If the timeout is
- * longer than the NEXT_TIMER_MAX_DELTA, then return NEXT_TIMER_MAX_DELTA
- * because the larger value can break the timer APIs.
- */
- static unsigned long watchdog_next_timeout(struct kvm_vcpu *vcpu)
- {
- u64 tb, wdt_tb, wdt_ticks = 0;
- u64 nr_jiffies = 0;
- u32 period = TCR_GET_WP(vcpu->arch.tcr);
- wdt_tb = 1ULL << (63 - period);
- tb = get_tb();
- /*
- * The watchdog timeout will hapeen when TB bit corresponding
- * to watchdog will toggle from 0 to 1.
- */
- if (tb & wdt_tb)
- wdt_ticks = wdt_tb;
- wdt_ticks += wdt_tb - (tb & (wdt_tb - 1));
- /* Convert timebase ticks to jiffies */
- nr_jiffies = wdt_ticks;
- if (do_div(nr_jiffies, tb_ticks_per_jiffy))
- nr_jiffies++;
- return min_t(unsigned long long, nr_jiffies, NEXT_TIMER_MAX_DELTA);
- }
- static void arm_next_watchdog(struct kvm_vcpu *vcpu)
- {
- unsigned long nr_jiffies;
- unsigned long flags;
- /*
- * If TSR_ENW and TSR_WIS are not set then no need to exit to
- * userspace, so clear the KVM_REQ_WATCHDOG request.
- */
- if ((vcpu->arch.tsr & (TSR_ENW | TSR_WIS)) != (TSR_ENW | TSR_WIS))
- kvm_clear_request(KVM_REQ_WATCHDOG, vcpu);
- spin_lock_irqsave(&vcpu->arch.wdt_lock, flags);
- nr_jiffies = watchdog_next_timeout(vcpu);
- /*
- * If the number of jiffies of watchdog timer >= NEXT_TIMER_MAX_DELTA
- * then do not run the watchdog timer as this can break timer APIs.
- */
- if (nr_jiffies < NEXT_TIMER_MAX_DELTA)
- mod_timer(&vcpu->arch.wdt_timer, jiffies + nr_jiffies);
- else
- del_timer(&vcpu->arch.wdt_timer);
- spin_unlock_irqrestore(&vcpu->arch.wdt_lock, flags);
- }
- void kvmppc_watchdog_func(struct timer_list *t)
- {
- struct kvm_vcpu *vcpu = from_timer(vcpu, t, arch.wdt_timer);
- u32 tsr, new_tsr;
- int final;
- do {
- new_tsr = tsr = vcpu->arch.tsr;
- final = 0;
- /* Time out event */
- if (tsr & TSR_ENW) {
- if (tsr & TSR_WIS)
- final = 1;
- else
- new_tsr = tsr | TSR_WIS;
- } else {
- new_tsr = tsr | TSR_ENW;
- }
- } while (cmpxchg(&vcpu->arch.tsr, tsr, new_tsr) != tsr);
- if (new_tsr & TSR_WIS) {
- smp_wmb();
- kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
- kvm_vcpu_kick(vcpu);
- }
- /*
- * If this is final watchdog expiry and some action is required
- * then exit to userspace.
- */
- if (final && (vcpu->arch.tcr & TCR_WRC_MASK) &&
- vcpu->arch.watchdog_enabled) {
- smp_wmb();
- kvm_make_request(KVM_REQ_WATCHDOG, vcpu);
- kvm_vcpu_kick(vcpu);
- }
- /*
- * Stop running the watchdog timer after final expiration to
- * prevent the host from being flooded with timers if the
- * guest sets a short period.
- * Timers will resume when TSR/TCR is updated next time.
- */
- if (!final)
- arm_next_watchdog(vcpu);
- }
- static void update_timer_ints(struct kvm_vcpu *vcpu)
- {
- if ((vcpu->arch.tcr & TCR_DIE) && (vcpu->arch.tsr & TSR_DIS))
- kvmppc_core_queue_dec(vcpu);
- else
- kvmppc_core_dequeue_dec(vcpu);
- if ((vcpu->arch.tcr & TCR_WIE) && (vcpu->arch.tsr & TSR_WIS))
- kvmppc_core_queue_watchdog(vcpu);
- else
- kvmppc_core_dequeue_watchdog(vcpu);
- }
- static void kvmppc_core_check_exceptions(struct kvm_vcpu *vcpu)
- {
- unsigned long *pending = &vcpu->arch.pending_exceptions;
- unsigned int priority;
- priority = __ffs(*pending);
- while (priority < BOOKE_IRQPRIO_MAX) {
- if (kvmppc_booke_irqprio_deliver(vcpu, priority))
- break;
- priority = find_next_bit(pending,
- BITS_PER_BYTE * sizeof(*pending),
- priority + 1);
- }
- /* Tell the guest about our interrupt status */
- vcpu->arch.shared->int_pending = !!*pending;
- }
- /* Check pending exceptions and deliver one, if possible. */
- int kvmppc_core_prepare_to_enter(struct kvm_vcpu *vcpu)
- {
- int r = 0;
- WARN_ON_ONCE(!irqs_disabled());
- kvmppc_core_check_exceptions(vcpu);
- if (kvm_request_pending(vcpu)) {
- /* Exception delivery raised request; start over */
- return 1;
- }
- if (vcpu->arch.shared->msr & MSR_WE) {
- local_irq_enable();
- kvm_vcpu_block(vcpu);
- kvm_clear_request(KVM_REQ_UNHALT, vcpu);
- hard_irq_disable();
- kvmppc_set_exit_type(vcpu, EMULATED_MTMSRWE_EXITS);
- r = 1;
- };
- return r;
- }
- int kvmppc_core_check_requests(struct kvm_vcpu *vcpu)
- {
- int r = 1; /* Indicate we want to get back into the guest */
- if (kvm_check_request(KVM_REQ_PENDING_TIMER, vcpu))
- update_timer_ints(vcpu);
- #if defined(CONFIG_KVM_E500V2) || defined(CONFIG_KVM_E500MC)
- if (kvm_check_request(KVM_REQ_TLB_FLUSH, vcpu))
- kvmppc_core_flush_tlb(vcpu);
- #endif
- if (kvm_check_request(KVM_REQ_WATCHDOG, vcpu)) {
- vcpu->run->exit_reason = KVM_EXIT_WATCHDOG;
- r = 0;
- }
- if (kvm_check_request(KVM_REQ_EPR_EXIT, vcpu)) {
- vcpu->run->epr.epr = 0;
- vcpu->arch.epr_needed = true;
- vcpu->run->exit_reason = KVM_EXIT_EPR;
- r = 0;
- }
- return r;
- }
- int kvmppc_vcpu_run(struct kvm_run *kvm_run, struct kvm_vcpu *vcpu)
- {
- int ret, s;
- struct debug_reg debug;
- if (!vcpu->arch.sane) {
- kvm_run->exit_reason = KVM_EXIT_INTERNAL_ERROR;
- return -EINVAL;
- }
- s = kvmppc_prepare_to_enter(vcpu);
- if (s <= 0) {
- ret = s;
- goto out;
- }
- /* interrupts now hard-disabled */
- #ifdef CONFIG_PPC_FPU
- /* Save userspace FPU state in stack */
- enable_kernel_fp();
- /*
- * Since we can't trap on MSR_FP in GS-mode, we consider the guest
- * as always using the FPU.
- */
- kvmppc_load_guest_fp(vcpu);
- #endif
- #ifdef CONFIG_ALTIVEC
- /* Save userspace AltiVec state in stack */
- if (cpu_has_feature(CPU_FTR_ALTIVEC))
- enable_kernel_altivec();
- /*
- * Since we can't trap on MSR_VEC in GS-mode, we consider the guest
- * as always using the AltiVec.
- */
- kvmppc_load_guest_altivec(vcpu);
- #endif
- /* Switch to guest debug context */
- debug = vcpu->arch.dbg_reg;
- switch_booke_debug_regs(&debug);
- debug = current->thread.debug;
- current->thread.debug = vcpu->arch.dbg_reg;
- vcpu->arch.pgdir = vcpu->kvm->mm->pgd;
- kvmppc_fix_ee_before_entry();
- ret = __kvmppc_vcpu_run(kvm_run, vcpu);
- /* No need for guest_exit. It's done in handle_exit.
- We also get here with interrupts enabled. */
- /* Switch back to user space debug context */
- switch_booke_debug_regs(&debug);
- current->thread.debug = debug;
- #ifdef CONFIG_PPC_FPU
- kvmppc_save_guest_fp(vcpu);
- #endif
- #ifdef CONFIG_ALTIVEC
- kvmppc_save_guest_altivec(vcpu);
- #endif
- out:
- vcpu->mode = OUTSIDE_GUEST_MODE;
- return ret;
- }
- static int emulation_exit(struct kvm_run *run, struct kvm_vcpu *vcpu)
- {
- enum emulation_result er;
- er = kvmppc_emulate_instruction(run, vcpu);
- switch (er) {
- case EMULATE_DONE:
- /* don't overwrite subtypes, just account kvm_stats */
- kvmppc_account_exit_stat(vcpu, EMULATED_INST_EXITS);
- /* Future optimization: only reload non-volatiles if
- * they were actually modified by emulation. */
- return RESUME_GUEST_NV;
- case EMULATE_AGAIN:
- return RESUME_GUEST;
- case EMULATE_FAIL:
- printk(KERN_CRIT "%s: emulation at %lx failed (%08x)\n",
- __func__, vcpu->arch.regs.nip, vcpu->arch.last_inst);
- /* For debugging, encode the failing instruction and
- * report it to userspace. */
- run->hw.hardware_exit_reason = ~0ULL << 32;
- run->hw.hardware_exit_reason |= vcpu->arch.last_inst;
- kvmppc_core_queue_program(vcpu, ESR_PIL);
- return RESUME_HOST;
- case EMULATE_EXIT_USER:
- return RESUME_HOST;
- default:
- BUG();
- }
- }
- static int kvmppc_handle_debug(struct kvm_run *run, struct kvm_vcpu *vcpu)
- {
- struct debug_reg *dbg_reg = &(vcpu->arch.dbg_reg);
- u32 dbsr = vcpu->arch.dbsr;
- if (vcpu->guest_debug == 0) {
- /*
- * Debug resources belong to Guest.
- * Imprecise debug event is not injected
- */
- if (dbsr & DBSR_IDE) {
- dbsr &= ~DBSR_IDE;
- if (!dbsr)
- return RESUME_GUEST;
- }
- if (dbsr && (vcpu->arch.shared->msr & MSR_DE) &&
- (vcpu->arch.dbg_reg.dbcr0 & DBCR0_IDM))
- kvmppc_core_queue_debug(vcpu);
- /* Inject a program interrupt if trap debug is not allowed */
- if ((dbsr & DBSR_TIE) && !(vcpu->arch.shared->msr & MSR_DE))
- kvmppc_core_queue_program(vcpu, ESR_PTR);
- return RESUME_GUEST;
- }
- /*
- * Debug resource owned by userspace.
- * Clear guest dbsr (vcpu->arch.dbsr)
- */
- vcpu->arch.dbsr = 0;
- run->debug.arch.status = 0;
- run->debug.arch.address = vcpu->arch.regs.nip;
- if (dbsr & (DBSR_IAC1 | DBSR_IAC2 | DBSR_IAC3 | DBSR_IAC4)) {
- run->debug.arch.status |= KVMPPC_DEBUG_BREAKPOINT;
- } else {
- if (dbsr & (DBSR_DAC1W | DBSR_DAC2W))
- run->debug.arch.status |= KVMPPC_DEBUG_WATCH_WRITE;
- else if (dbsr & (DBSR_DAC1R | DBSR_DAC2R))
- run->debug.arch.status |= KVMPPC_DEBUG_WATCH_READ;
- if (dbsr & (DBSR_DAC1R | DBSR_DAC1W))
- run->debug.arch.address = dbg_reg->dac1;
- else if (dbsr & (DBSR_DAC2R | DBSR_DAC2W))
- run->debug.arch.address = dbg_reg->dac2;
- }
- return RESUME_HOST;
- }
- static void kvmppc_fill_pt_regs(struct pt_regs *regs)
- {
- ulong r1, ip, msr, lr;
- asm("mr %0, 1" : "=r"(r1));
- asm("mflr %0" : "=r"(lr));
- asm("mfmsr %0" : "=r"(msr));
- asm("bl 1f; 1: mflr %0" : "=r"(ip));
- memset(regs, 0, sizeof(*regs));
- regs->gpr[1] = r1;
- regs->nip = ip;
- regs->msr = msr;
- regs->link = lr;
- }
- /*
- * For interrupts needed to be handled by host interrupt handlers,
- * corresponding host handler are called from here in similar way
- * (but not exact) as they are called from low level handler
- * (such as from arch/powerpc/kernel/head_fsl_booke.S).
- */
- static void kvmppc_restart_interrupt(struct kvm_vcpu *vcpu,
- unsigned int exit_nr)
- {
- struct pt_regs regs;
- switch (exit_nr) {
- case BOOKE_INTERRUPT_EXTERNAL:
- kvmppc_fill_pt_regs(®s);
- do_IRQ(®s);
- break;
- case BOOKE_INTERRUPT_DECREMENTER:
- kvmppc_fill_pt_regs(®s);
- timer_interrupt(®s);
- break;
- #if defined(CONFIG_PPC_DOORBELL)
- case BOOKE_INTERRUPT_DOORBELL:
- kvmppc_fill_pt_regs(®s);
- doorbell_exception(®s);
- break;
- #endif
- case BOOKE_INTERRUPT_MACHINE_CHECK:
- /* FIXME */
- break;
- case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
- kvmppc_fill_pt_regs(®s);
- performance_monitor_exception(®s);
- break;
- case BOOKE_INTERRUPT_WATCHDOG:
- kvmppc_fill_pt_regs(®s);
- #ifdef CONFIG_BOOKE_WDT
- WatchdogException(®s);
- #else
- unknown_exception(®s);
- #endif
- break;
- case BOOKE_INTERRUPT_CRITICAL:
- kvmppc_fill_pt_regs(®s);
- unknown_exception(®s);
- break;
- case BOOKE_INTERRUPT_DEBUG:
- /* Save DBSR before preemption is enabled */
- vcpu->arch.dbsr = mfspr(SPRN_DBSR);
- kvmppc_clear_dbsr();
- break;
- }
- }
- static int kvmppc_resume_inst_load(struct kvm_run *run, struct kvm_vcpu *vcpu,
- enum emulation_result emulated, u32 last_inst)
- {
- switch (emulated) {
- case EMULATE_AGAIN:
- return RESUME_GUEST;
- case EMULATE_FAIL:
- pr_debug("%s: load instruction from guest address %lx failed\n",
- __func__, vcpu->arch.regs.nip);
- /* For debugging, encode the failing instruction and
- * report it to userspace. */
- run->hw.hardware_exit_reason = ~0ULL << 32;
- run->hw.hardware_exit_reason |= last_inst;
- kvmppc_core_queue_program(vcpu, ESR_PIL);
- return RESUME_HOST;
- default:
- BUG();
- }
- }
- /**
- * kvmppc_handle_exit
- *
- * Return value is in the form (errcode<<2 | RESUME_FLAG_HOST | RESUME_FLAG_NV)
- */
- int kvmppc_handle_exit(struct kvm_run *run, struct kvm_vcpu *vcpu,
- unsigned int exit_nr)
- {
- int r = RESUME_HOST;
- int s;
- int idx;
- u32 last_inst = KVM_INST_FETCH_FAILED;
- enum emulation_result emulated = EMULATE_DONE;
- /* update before a new last_exit_type is rewritten */
- kvmppc_update_timing_stats(vcpu);
- /* restart interrupts if they were meant for the host */
- kvmppc_restart_interrupt(vcpu, exit_nr);
- /*
- * get last instruction before being preempted
- * TODO: for e6500 check also BOOKE_INTERRUPT_LRAT_ERROR & ESR_DATA
- */
- switch (exit_nr) {
- case BOOKE_INTERRUPT_DATA_STORAGE:
- case BOOKE_INTERRUPT_DTLB_MISS:
- case BOOKE_INTERRUPT_HV_PRIV:
- emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
- break;
- case BOOKE_INTERRUPT_PROGRAM:
- /* SW breakpoints arrive as illegal instructions on HV */
- if (vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP)
- emulated = kvmppc_get_last_inst(vcpu, INST_GENERIC, &last_inst);
- break;
- default:
- break;
- }
- trace_kvm_exit(exit_nr, vcpu);
- guest_exit_irqoff();
- local_irq_enable();
- run->exit_reason = KVM_EXIT_UNKNOWN;
- run->ready_for_interrupt_injection = 1;
- if (emulated != EMULATE_DONE) {
- r = kvmppc_resume_inst_load(run, vcpu, emulated, last_inst);
- goto out;
- }
- switch (exit_nr) {
- case BOOKE_INTERRUPT_MACHINE_CHECK:
- printk("MACHINE CHECK: %lx\n", mfspr(SPRN_MCSR));
- kvmppc_dump_vcpu(vcpu);
- /* For debugging, send invalid exit reason to user space */
- run->hw.hardware_exit_reason = ~1ULL << 32;
- run->hw.hardware_exit_reason |= mfspr(SPRN_MCSR);
- r = RESUME_HOST;
- break;
- case BOOKE_INTERRUPT_EXTERNAL:
- kvmppc_account_exit(vcpu, EXT_INTR_EXITS);
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_DECREMENTER:
- kvmppc_account_exit(vcpu, DEC_EXITS);
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_WATCHDOG:
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_DOORBELL:
- kvmppc_account_exit(vcpu, DBELL_EXITS);
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_GUEST_DBELL_CRIT:
- kvmppc_account_exit(vcpu, GDBELL_EXITS);
- /*
- * We are here because there is a pending guest interrupt
- * which could not be delivered as MSR_CE or MSR_ME was not
- * set. Once we break from here we will retry delivery.
- */
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_GUEST_DBELL:
- kvmppc_account_exit(vcpu, GDBELL_EXITS);
- /*
- * We are here because there is a pending guest interrupt
- * which could not be delivered as MSR_EE was not set. Once
- * we break from here we will retry delivery.
- */
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_PERFORMANCE_MONITOR:
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_HV_PRIV:
- r = emulation_exit(run, vcpu);
- break;
- case BOOKE_INTERRUPT_PROGRAM:
- if ((vcpu->guest_debug & KVM_GUESTDBG_USE_SW_BP) &&
- (last_inst == KVMPPC_INST_SW_BREAKPOINT)) {
- /*
- * We are here because of an SW breakpoint instr,
- * so lets return to host to handle.
- */
- r = kvmppc_handle_debug(run, vcpu);
- run->exit_reason = KVM_EXIT_DEBUG;
- kvmppc_account_exit(vcpu, DEBUG_EXITS);
- break;
- }
- if (vcpu->arch.shared->msr & (MSR_PR | MSR_GS)) {
- /*
- * Program traps generated by user-level software must
- * be handled by the guest kernel.
- *
- * In GS mode, hypervisor privileged instructions trap
- * on BOOKE_INTERRUPT_HV_PRIV, not here, so these are
- * actual program interrupts, handled by the guest.
- */
- kvmppc_core_queue_program(vcpu, vcpu->arch.fault_esr);
- r = RESUME_GUEST;
- kvmppc_account_exit(vcpu, USR_PR_INST);
- break;
- }
- r = emulation_exit(run, vcpu);
- break;
- case BOOKE_INTERRUPT_FP_UNAVAIL:
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_FP_UNAVAIL);
- kvmppc_account_exit(vcpu, FP_UNAVAIL);
- r = RESUME_GUEST;
- break;
- #ifdef CONFIG_SPE
- case BOOKE_INTERRUPT_SPE_UNAVAIL: {
- if (vcpu->arch.shared->msr & MSR_SPE)
- kvmppc_vcpu_enable_spe(vcpu);
- else
- kvmppc_booke_queue_irqprio(vcpu,
- BOOKE_IRQPRIO_SPE_UNAVAIL);
- r = RESUME_GUEST;
- break;
- }
- case BOOKE_INTERRUPT_SPE_FP_DATA:
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_DATA);
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_SPE_FP_ROUND:
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SPE_FP_ROUND);
- r = RESUME_GUEST;
- break;
- #elif defined(CONFIG_SPE_POSSIBLE)
- case BOOKE_INTERRUPT_SPE_UNAVAIL:
- /*
- * Guest wants SPE, but host kernel doesn't support it. Send
- * an "unimplemented operation" program check to the guest.
- */
- kvmppc_core_queue_program(vcpu, ESR_PUO | ESR_SPV);
- r = RESUME_GUEST;
- break;
- /*
- * These really should never happen without CONFIG_SPE,
- * as we should never enable the real MSR[SPE] in the guest.
- */
- case BOOKE_INTERRUPT_SPE_FP_DATA:
- case BOOKE_INTERRUPT_SPE_FP_ROUND:
- printk(KERN_CRIT "%s: unexpected SPE interrupt %u at %08lx\n",
- __func__, exit_nr, vcpu->arch.regs.nip);
- run->hw.hardware_exit_reason = exit_nr;
- r = RESUME_HOST;
- break;
- #endif /* CONFIG_SPE_POSSIBLE */
- /*
- * On cores with Vector category, KVM is loaded only if CONFIG_ALTIVEC,
- * see kvmppc_core_check_processor_compat().
- */
- #ifdef CONFIG_ALTIVEC
- case BOOKE_INTERRUPT_ALTIVEC_UNAVAIL:
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_UNAVAIL);
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_ALTIVEC_ASSIST:
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ALTIVEC_ASSIST);
- r = RESUME_GUEST;
- break;
- #endif
- case BOOKE_INTERRUPT_DATA_STORAGE:
- kvmppc_core_queue_data_storage(vcpu, vcpu->arch.fault_dear,
- vcpu->arch.fault_esr);
- kvmppc_account_exit(vcpu, DSI_EXITS);
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_INST_STORAGE:
- kvmppc_core_queue_inst_storage(vcpu, vcpu->arch.fault_esr);
- kvmppc_account_exit(vcpu, ISI_EXITS);
- r = RESUME_GUEST;
- break;
- case BOOKE_INTERRUPT_ALIGNMENT:
- kvmppc_core_queue_alignment(vcpu, vcpu->arch.fault_dear,
- vcpu->arch.fault_esr);
- r = RESUME_GUEST;
- break;
- #ifdef CONFIG_KVM_BOOKE_HV
- case BOOKE_INTERRUPT_HV_SYSCALL:
- if (!(vcpu->arch.shared->msr & MSR_PR)) {
- kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
- } else {
- /*
- * hcall from guest userspace -- send privileged
- * instruction program check.
- */
- kvmppc_core_queue_program(vcpu, ESR_PPR);
- }
- r = RESUME_GUEST;
- break;
- #else
- case BOOKE_INTERRUPT_SYSCALL:
- if (!(vcpu->arch.shared->msr & MSR_PR) &&
- (((u32)kvmppc_get_gpr(vcpu, 0)) == KVM_SC_MAGIC_R0)) {
- /* KVM PV hypercalls */
- kvmppc_set_gpr(vcpu, 3, kvmppc_kvm_pv(vcpu));
- r = RESUME_GUEST;
- } else {
- /* Guest syscalls */
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_SYSCALL);
- }
- kvmppc_account_exit(vcpu, SYSCALL_EXITS);
- r = RESUME_GUEST;
- break;
- #endif
- case BOOKE_INTERRUPT_DTLB_MISS: {
- unsigned long eaddr = vcpu->arch.fault_dear;
- int gtlb_index;
- gpa_t gpaddr;
- gfn_t gfn;
- #ifdef CONFIG_KVM_E500V2
- if (!(vcpu->arch.shared->msr & MSR_PR) &&
- (eaddr & PAGE_MASK) == vcpu->arch.magic_page_ea) {
- kvmppc_map_magic(vcpu);
- kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
- r = RESUME_GUEST;
- break;
- }
- #endif
- /* Check the guest TLB. */
- gtlb_index = kvmppc_mmu_dtlb_index(vcpu, eaddr);
- if (gtlb_index < 0) {
- /* The guest didn't have a mapping for it. */
- kvmppc_core_queue_dtlb_miss(vcpu,
- vcpu->arch.fault_dear,
- vcpu->arch.fault_esr);
- kvmppc_mmu_dtlb_miss(vcpu);
- kvmppc_account_exit(vcpu, DTLB_REAL_MISS_EXITS);
- r = RESUME_GUEST;
- break;
- }
- idx = srcu_read_lock(&vcpu->kvm->srcu);
- gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
- gfn = gpaddr >> PAGE_SHIFT;
- if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
- /* The guest TLB had a mapping, but the shadow TLB
- * didn't, and it is RAM. This could be because:
- * a) the entry is mapping the host kernel, or
- * b) the guest used a large mapping which we're faking
- * Either way, we need to satisfy the fault without
- * invoking the guest. */
- kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
- kvmppc_account_exit(vcpu, DTLB_VIRT_MISS_EXITS);
- r = RESUME_GUEST;
- } else {
- /* Guest has mapped and accessed a page which is not
- * actually RAM. */
- vcpu->arch.paddr_accessed = gpaddr;
- vcpu->arch.vaddr_accessed = eaddr;
- r = kvmppc_emulate_mmio(run, vcpu);
- kvmppc_account_exit(vcpu, MMIO_EXITS);
- }
- srcu_read_unlock(&vcpu->kvm->srcu, idx);
- break;
- }
- case BOOKE_INTERRUPT_ITLB_MISS: {
- unsigned long eaddr = vcpu->arch.regs.nip;
- gpa_t gpaddr;
- gfn_t gfn;
- int gtlb_index;
- r = RESUME_GUEST;
- /* Check the guest TLB. */
- gtlb_index = kvmppc_mmu_itlb_index(vcpu, eaddr);
- if (gtlb_index < 0) {
- /* The guest didn't have a mapping for it. */
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_ITLB_MISS);
- kvmppc_mmu_itlb_miss(vcpu);
- kvmppc_account_exit(vcpu, ITLB_REAL_MISS_EXITS);
- break;
- }
- kvmppc_account_exit(vcpu, ITLB_VIRT_MISS_EXITS);
- idx = srcu_read_lock(&vcpu->kvm->srcu);
- gpaddr = kvmppc_mmu_xlate(vcpu, gtlb_index, eaddr);
- gfn = gpaddr >> PAGE_SHIFT;
- if (kvm_is_visible_gfn(vcpu->kvm, gfn)) {
- /* The guest TLB had a mapping, but the shadow TLB
- * didn't. This could be because:
- * a) the entry is mapping the host kernel, or
- * b) the guest used a large mapping which we're faking
- * Either way, we need to satisfy the fault without
- * invoking the guest. */
- kvmppc_mmu_map(vcpu, eaddr, gpaddr, gtlb_index);
- } else {
- /* Guest mapped and leaped at non-RAM! */
- kvmppc_booke_queue_irqprio(vcpu, BOOKE_IRQPRIO_MACHINE_CHECK);
- }
- srcu_read_unlock(&vcpu->kvm->srcu, idx);
- break;
- }
- case BOOKE_INTERRUPT_DEBUG: {
- r = kvmppc_handle_debug(run, vcpu);
- if (r == RESUME_HOST)
- run->exit_reason = KVM_EXIT_DEBUG;
- kvmppc_account_exit(vcpu, DEBUG_EXITS);
- break;
- }
- default:
- printk(KERN_EMERG "exit_nr %d\n", exit_nr);
- BUG();
- }
- out:
- /*
- * To avoid clobbering exit_reason, only check for signals if we
- * aren't already exiting to userspace for some other reason.
- */
- if (!(r & RESUME_HOST)) {
- s = kvmppc_prepare_to_enter(vcpu);
- if (s <= 0)
- r = (s << 2) | RESUME_HOST | (r & RESUME_FLAG_NV);
- else {
- /* interrupts now hard-disabled */
- kvmppc_fix_ee_before_entry();
- kvmppc_load_guest_fp(vcpu);
- kvmppc_load_guest_altivec(vcpu);
- }
- }
- return r;
- }
- static void kvmppc_set_tsr(struct kvm_vcpu *vcpu, u32 new_tsr)
- {
- u32 old_tsr = vcpu->arch.tsr;
- vcpu->arch.tsr = new_tsr;
- if ((old_tsr ^ vcpu->arch.tsr) & (TSR_ENW | TSR_WIS))
- arm_next_watchdog(vcpu);
- update_timer_ints(vcpu);
- }
- int kvmppc_subarch_vcpu_init(struct kvm_vcpu *vcpu)
- {
- /* setup watchdog timer once */
- spin_lock_init(&vcpu->arch.wdt_lock);
- timer_setup(&vcpu->arch.wdt_timer, kvmppc_watchdog_func, 0);
- /*
- * Clear DBSR.MRR to avoid guest debug interrupt as
- * this is of host interest
- */
- mtspr(SPRN_DBSR, DBSR_MRR);
- return 0;
- }
- void kvmppc_subarch_vcpu_uninit(struct kvm_vcpu *vcpu)
- {
- del_timer_sync(&vcpu->arch.wdt_timer);
- }
- int kvm_arch_vcpu_ioctl_get_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
- {
- int i;
- vcpu_load(vcpu);
- regs->pc = vcpu->arch.regs.nip;
- regs->cr = kvmppc_get_cr(vcpu);
- regs->ctr = vcpu->arch.regs.ctr;
- regs->lr = vcpu->arch.regs.link;
- regs->xer = kvmppc_get_xer(vcpu);
- regs->msr = vcpu->arch.shared->msr;
- regs->srr0 = kvmppc_get_srr0(vcpu);
- regs->srr1 = kvmppc_get_srr1(vcpu);
- regs->pid = vcpu->arch.pid;
- regs->sprg0 = kvmppc_get_sprg0(vcpu);
- regs->sprg1 = kvmppc_get_sprg1(vcpu);
- regs->sprg2 = kvmppc_get_sprg2(vcpu);
- regs->sprg3 = kvmppc_get_sprg3(vcpu);
- regs->sprg4 = kvmppc_get_sprg4(vcpu);
- regs->sprg5 = kvmppc_get_sprg5(vcpu);
- regs->sprg6 = kvmppc_get_sprg6(vcpu);
- regs->sprg7 = kvmppc_get_sprg7(vcpu);
- for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
- regs->gpr[i] = kvmppc_get_gpr(vcpu, i);
- vcpu_put(vcpu);
- return 0;
- }
- int kvm_arch_vcpu_ioctl_set_regs(struct kvm_vcpu *vcpu, struct kvm_regs *regs)
- {
- int i;
- vcpu_load(vcpu);
- vcpu->arch.regs.nip = regs->pc;
- kvmppc_set_cr(vcpu, regs->cr);
- vcpu->arch.regs.ctr = regs->ctr;
- vcpu->arch.regs.link = regs->lr;
- kvmppc_set_xer(vcpu, regs->xer);
- kvmppc_set_msr(vcpu, regs->msr);
- kvmppc_set_srr0(vcpu, regs->srr0);
- kvmppc_set_srr1(vcpu, regs->srr1);
- kvmppc_set_pid(vcpu, regs->pid);
- kvmppc_set_sprg0(vcpu, regs->sprg0);
- kvmppc_set_sprg1(vcpu, regs->sprg1);
- kvmppc_set_sprg2(vcpu, regs->sprg2);
- kvmppc_set_sprg3(vcpu, regs->sprg3);
- kvmppc_set_sprg4(vcpu, regs->sprg4);
- kvmppc_set_sprg5(vcpu, regs->sprg5);
- kvmppc_set_sprg6(vcpu, regs->sprg6);
- kvmppc_set_sprg7(vcpu, regs->sprg7);
- for (i = 0; i < ARRAY_SIZE(regs->gpr); i++)
- kvmppc_set_gpr(vcpu, i, regs->gpr[i]);
- vcpu_put(vcpu);
- return 0;
- }
- static void get_sregs_base(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
- {
- u64 tb = get_tb();
- sregs->u.e.features |= KVM_SREGS_E_BASE;
- sregs->u.e.csrr0 = vcpu->arch.csrr0;
- sregs->u.e.csrr1 = vcpu->arch.csrr1;
- sregs->u.e.mcsr = vcpu->arch.mcsr;
- sregs->u.e.esr = kvmppc_get_esr(vcpu);
- sregs->u.e.dear = kvmppc_get_dar(vcpu);
- sregs->u.e.tsr = vcpu->arch.tsr;
- sregs->u.e.tcr = vcpu->arch.tcr;
- sregs->u.e.dec = kvmppc_get_dec(vcpu, tb);
- sregs->u.e.tb = tb;
- sregs->u.e.vrsave = vcpu->arch.vrsave;
- }
- static int set_sregs_base(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
- {
- if (!(sregs->u.e.features & KVM_SREGS_E_BASE))
- return 0;
- vcpu->arch.csrr0 = sregs->u.e.csrr0;
- vcpu->arch.csrr1 = sregs->u.e.csrr1;
- vcpu->arch.mcsr = sregs->u.e.mcsr;
- kvmppc_set_esr(vcpu, sregs->u.e.esr);
- kvmppc_set_dar(vcpu, sregs->u.e.dear);
- vcpu->arch.vrsave = sregs->u.e.vrsave;
- kvmppc_set_tcr(vcpu, sregs->u.e.tcr);
- if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_DEC) {
- vcpu->arch.dec = sregs->u.e.dec;
- kvmppc_emulate_dec(vcpu);
- }
- if (sregs->u.e.update_special & KVM_SREGS_E_UPDATE_TSR)
- kvmppc_set_tsr(vcpu, sregs->u.e.tsr);
- return 0;
- }
- static void get_sregs_arch206(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
- {
- sregs->u.e.features |= KVM_SREGS_E_ARCH206;
- sregs->u.e.pir = vcpu->vcpu_id;
- sregs->u.e.mcsrr0 = vcpu->arch.mcsrr0;
- sregs->u.e.mcsrr1 = vcpu->arch.mcsrr1;
- sregs->u.e.decar = vcpu->arch.decar;
- sregs->u.e.ivpr = vcpu->arch.ivpr;
- }
- static int set_sregs_arch206(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
- {
- if (!(sregs->u.e.features & KVM_SREGS_E_ARCH206))
- return 0;
- if (sregs->u.e.pir != vcpu->vcpu_id)
- return -EINVAL;
- vcpu->arch.mcsrr0 = sregs->u.e.mcsrr0;
- vcpu->arch.mcsrr1 = sregs->u.e.mcsrr1;
- vcpu->arch.decar = sregs->u.e.decar;
- vcpu->arch.ivpr = sregs->u.e.ivpr;
- return 0;
- }
- int kvmppc_get_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
- {
- sregs->u.e.features |= KVM_SREGS_E_IVOR;
- sregs->u.e.ivor_low[0] = vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL];
- sregs->u.e.ivor_low[1] = vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK];
- sregs->u.e.ivor_low[2] = vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE];
- sregs->u.e.ivor_low[3] = vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE];
- sregs->u.e.ivor_low[4] = vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL];
- sregs->u.e.ivor_low[5] = vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT];
- sregs->u.e.ivor_low[6] = vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM];
- sregs->u.e.ivor_low[7] = vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL];
- sregs->u.e.ivor_low[8] = vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL];
- sregs->u.e.ivor_low[9] = vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL];
- sregs->u.e.ivor_low[10] = vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER];
- sregs->u.e.ivor_low[11] = vcpu->arch.ivor[BOOKE_IRQPRIO_FIT];
- sregs->u.e.ivor_low[12] = vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG];
- sregs->u.e.ivor_low[13] = vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS];
- sregs->u.e.ivor_low[14] = vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS];
- sregs->u.e.ivor_low[15] = vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG];
- return 0;
- }
- int kvmppc_set_sregs_ivor(struct kvm_vcpu *vcpu, struct kvm_sregs *sregs)
- {
- if (!(sregs->u.e.features & KVM_SREGS_E_IVOR))
- return 0;
- vcpu->arch.ivor[BOOKE_IRQPRIO_CRITICAL] = sregs->u.e.ivor_low[0];
- vcpu->arch.ivor[BOOKE_IRQPRIO_MACHINE_CHECK] = sregs->u.e.ivor_low[1];
- vcpu->arch.ivor[BOOKE_IRQPRIO_DATA_STORAGE] = sregs->u.e.ivor_low[2];
- vcpu->arch.ivor[BOOKE_IRQPRIO_INST_STORAGE] = sregs->u.e.ivor_low[3];
- vcpu->arch.ivor[BOOKE_IRQPRIO_EXTERNAL] = sregs->u.e.ivor_low[4];
- vcpu->arch.ivor[BOOKE_IRQPRIO_ALIGNMENT] = sregs->u.e.ivor_low[5];
- vcpu->arch.ivor[BOOKE_IRQPRIO_PROGRAM] = sregs->u.e.ivor_low[6];
- vcpu->arch.ivor[BOOKE_IRQPRIO_FP_UNAVAIL] = sregs->u.e.ivor_low[7];
- vcpu->arch.ivor[BOOKE_IRQPRIO_SYSCALL] = sregs->u.e.ivor_low[8];
- vcpu->arch.ivor[BOOKE_IRQPRIO_AP_UNAVAIL] = sregs->u.e.ivor_low[9];
- vcpu->arch.ivor[BOOKE_IRQPRIO_DECREMENTER] = sregs->u.e.ivor_low[10];
- vcpu->arch.ivor[BOOKE_IRQPRIO_FIT] = sregs->u.e.ivor_low[11];
- vcpu->arch.ivor[BOOKE_IRQPRIO_WATCHDOG] = sregs->u.e.ivor_low[12];
- vcpu->arch.ivor[BOOKE_IRQPRIO_DTLB_MISS] = sregs->u.e.ivor_low[13];
- vcpu->arch.ivor[BOOKE_IRQPRIO_ITLB_MISS] = sregs->u.e.ivor_low[14];
- vcpu->arch.ivor[BOOKE_IRQPRIO_DEBUG] = sregs->u.e.ivor_low[15];
- return 0;
- }
- int kvm_arch_vcpu_ioctl_get_sregs(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
- {
- int ret;
- vcpu_load(vcpu);
- sregs->pvr = vcpu->arch.pvr;
- get_sregs_base(vcpu, sregs);
- get_sregs_arch206(vcpu, sregs);
- ret = vcpu->kvm->arch.kvm_ops->get_sregs(vcpu, sregs);
- vcpu_put(vcpu);
- return ret;
- }
- int kvm_arch_vcpu_ioctl_set_sregs(struct kvm_vcpu *vcpu,
- struct kvm_sregs *sregs)
- {
- int ret = -EINVAL;
- vcpu_load(vcpu);
- if (vcpu->arch.pvr != sregs->pvr)
- goto out;
- ret = set_sregs_base(vcpu, sregs);
- if (ret < 0)
- goto out;
- ret = set_sregs_arch206(vcpu, sregs);
- if (ret < 0)
- goto out;
- ret = vcpu->kvm->arch.kvm_ops->set_sregs(vcpu, sregs);
- out:
- vcpu_put(vcpu);
- return ret;
- }
- int kvmppc_get_one_reg(struct kvm_vcpu *vcpu, u64 id,
- union kvmppc_one_reg *val)
- {
- int r = 0;
- switch (id) {
- case KVM_REG_PPC_IAC1:
- *val = get_reg_val(id, vcpu->arch.dbg_reg.iac1);
- break;
- case KVM_REG_PPC_IAC2:
- *val = get_reg_val(id, vcpu->arch.dbg_reg.iac2);
- break;
- #if CONFIG_PPC_ADV_DEBUG_IACS > 2
- case KVM_REG_PPC_IAC3:
- *val = get_reg_val(id, vcpu->arch.dbg_reg.iac3);
- break;
- case KVM_REG_PPC_IAC4:
- *val = get_reg_val(id, vcpu->arch.dbg_reg.iac4);
- break;
- #endif
- case KVM_REG_PPC_DAC1:
- *val = get_reg_val(id, vcpu->arch.dbg_reg.dac1);
- break;
- case KVM_REG_PPC_DAC2:
- *val = get_reg_val(id, vcpu->arch.dbg_reg.dac2);
- break;
- case KVM_REG_PPC_EPR: {
- u32 epr = kvmppc_get_epr(vcpu);
- *val = get_reg_val(id, epr);
- break;
- }
- #if defined(CONFIG_64BIT)
- case KVM_REG_PPC_EPCR:
- *val = get_reg_val(id, vcpu->arch.epcr);
- break;
- #endif
- case KVM_REG_PPC_TCR:
- *val = get_reg_val(id, vcpu->arch.tcr);
- break;
- case KVM_REG_PPC_TSR:
- *val = get_reg_val(id, vcpu->arch.tsr);
- break;
- case KVM_REG_PPC_DEBUG_INST:
- *val = get_reg_val(id, KVMPPC_INST_SW_BREAKPOINT);
- break;
- case KVM_REG_PPC_VRSAVE:
- *val = get_reg_val(id, vcpu->arch.vrsave);
- break;
- default:
- r = vcpu->kvm->arch.kvm_ops->get_one_reg(vcpu, id, val);
- break;
- }
- return r;
- }
- int kvmppc_set_one_reg(struct kvm_vcpu *vcpu, u64 id,
- union kvmppc_one_reg *val)
- {
- int r = 0;
- switch (id) {
- case KVM_REG_PPC_IAC1:
- vcpu->arch.dbg_reg.iac1 = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_IAC2:
- vcpu->arch.dbg_reg.iac2 = set_reg_val(id, *val);
- break;
- #if CONFIG_PPC_ADV_DEBUG_IACS > 2
- case KVM_REG_PPC_IAC3:
- vcpu->arch.dbg_reg.iac3 = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_IAC4:
- vcpu->arch.dbg_reg.iac4 = set_reg_val(id, *val);
- break;
- #endif
- case KVM_REG_PPC_DAC1:
- vcpu->arch.dbg_reg.dac1 = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_DAC2:
- vcpu->arch.dbg_reg.dac2 = set_reg_val(id, *val);
- break;
- case KVM_REG_PPC_EPR: {
- u32 new_epr = set_reg_val(id, *val);
- kvmppc_set_epr(vcpu, new_epr);
- break;
- }
- #if defined(CONFIG_64BIT)
- case KVM_REG_PPC_EPCR: {
- u32 new_epcr = set_reg_val(id, *val);
- kvmppc_set_epcr(vcpu, new_epcr);
- break;
- }
- #endif
- case KVM_REG_PPC_OR_TSR: {
- u32 tsr_bits = set_reg_val(id, *val);
- kvmppc_set_tsr_bits(vcpu, tsr_bits);
- break;
- }
- case KVM_REG_PPC_CLEAR_TSR: {
- u32 tsr_bits = set_reg_val(id, *val);
- kvmppc_clr_tsr_bits(vcpu, tsr_bits);
- break;
- }
- case KVM_REG_PPC_TSR: {
- u32 tsr = set_reg_val(id, *val);
- kvmppc_set_tsr(vcpu, tsr);
- break;
- }
- case KVM_REG_PPC_TCR: {
- u32 tcr = set_reg_val(id, *val);
- kvmppc_set_tcr(vcpu, tcr);
- break;
- }
- case KVM_REG_PPC_VRSAVE:
- vcpu->arch.vrsave = set_reg_val(id, *val);
- break;
- default:
- r = vcpu->kvm->arch.kvm_ops->set_one_reg(vcpu, id, val);
- break;
- }
- return r;
- }
- int kvm_arch_vcpu_ioctl_get_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
- {
- return -ENOTSUPP;
- }
- int kvm_arch_vcpu_ioctl_set_fpu(struct kvm_vcpu *vcpu, struct kvm_fpu *fpu)
- {
- return -ENOTSUPP;
- }
- int kvm_arch_vcpu_ioctl_translate(struct kvm_vcpu *vcpu,
- struct kvm_translation *tr)
- {
- int r;
- vcpu_load(vcpu);
- r = kvmppc_core_vcpu_translate(vcpu, tr);
- vcpu_put(vcpu);
- return r;
- }
- void kvm_arch_sync_dirty_log(struct kvm *kvm, struct kvm_memory_slot *memslot)
- {
- }
- int kvm_vm_ioctl_get_dirty_log(struct kvm *kvm, struct kvm_dirty_log *log)
- {
- return -ENOTSUPP;
- }
- void kvmppc_core_free_memslot(struct kvm *kvm, struct kvm_memory_slot *slot)
- {
- }
- int kvmppc_core_prepare_memory_region(struct kvm *kvm,
- struct kvm_memory_slot *memslot,
- const struct kvm_userspace_memory_region *mem,
- enum kvm_mr_change change)
- {
- return 0;
- }
- void kvmppc_core_commit_memory_region(struct kvm *kvm,
- const struct kvm_userspace_memory_region *mem,
- const struct kvm_memory_slot *old,
- const struct kvm_memory_slot *new,
- enum kvm_mr_change change)
- {
- }
- void kvmppc_core_flush_memslot(struct kvm *kvm, struct kvm_memory_slot *memslot)
- {
- }
- void kvmppc_set_epcr(struct kvm_vcpu *vcpu, u32 new_epcr)
- {
- #if defined(CONFIG_64BIT)
- vcpu->arch.epcr = new_epcr;
- #ifdef CONFIG_KVM_BOOKE_HV
- vcpu->arch.shadow_epcr &= ~SPRN_EPCR_GICM;
- if (vcpu->arch.epcr & SPRN_EPCR_ICM)
- vcpu->arch.shadow_epcr |= SPRN_EPCR_GICM;
- #endif
- #endif
- }
- void kvmppc_set_tcr(struct kvm_vcpu *vcpu, u32 new_tcr)
- {
- vcpu->arch.tcr = new_tcr;
- arm_next_watchdog(vcpu);
- update_timer_ints(vcpu);
- }
- void kvmppc_set_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
- {
- set_bits(tsr_bits, &vcpu->arch.tsr);
- smp_wmb();
- kvm_make_request(KVM_REQ_PENDING_TIMER, vcpu);
- kvm_vcpu_kick(vcpu);
- }
- void kvmppc_clr_tsr_bits(struct kvm_vcpu *vcpu, u32 tsr_bits)
- {
- clear_bits(tsr_bits, &vcpu->arch.tsr);
- /*
- * We may have stopped the watchdog due to
- * being stuck on final expiration.
- */
- if (tsr_bits & (TSR_ENW | TSR_WIS))
- arm_next_watchdog(vcpu);
- update_timer_ints(vcpu);
- }
- void kvmppc_decrementer_func(struct kvm_vcpu *vcpu)
- {
- if (vcpu->arch.tcr & TCR_ARE) {
- vcpu->arch.dec = vcpu->arch.decar;
- kvmppc_emulate_dec(vcpu);
- }
- kvmppc_set_tsr_bits(vcpu, TSR_DIS);
- }
- static int kvmppc_booke_add_breakpoint(struct debug_reg *dbg_reg,
- uint64_t addr, int index)
- {
- switch (index) {
- case 0:
- dbg_reg->dbcr0 |= DBCR0_IAC1;
- dbg_reg->iac1 = addr;
- break;
- case 1:
- dbg_reg->dbcr0 |= DBCR0_IAC2;
- dbg_reg->iac2 = addr;
- break;
- #if CONFIG_PPC_ADV_DEBUG_IACS > 2
- case 2:
- dbg_reg->dbcr0 |= DBCR0_IAC3;
- dbg_reg->iac3 = addr;
- break;
- case 3:
- dbg_reg->dbcr0 |= DBCR0_IAC4;
- dbg_reg->iac4 = addr;
- break;
- #endif
- default:
- return -EINVAL;
- }
- dbg_reg->dbcr0 |= DBCR0_IDM;
- return 0;
- }
- static int kvmppc_booke_add_watchpoint(struct debug_reg *dbg_reg, uint64_t addr,
- int type, int index)
- {
- switch (index) {
- case 0:
- if (type & KVMPPC_DEBUG_WATCH_READ)
- dbg_reg->dbcr0 |= DBCR0_DAC1R;
- if (type & KVMPPC_DEBUG_WATCH_WRITE)
- dbg_reg->dbcr0 |= DBCR0_DAC1W;
- dbg_reg->dac1 = addr;
- break;
- case 1:
- if (type & KVMPPC_DEBUG_WATCH_READ)
- dbg_reg->dbcr0 |= DBCR0_DAC2R;
- if (type & KVMPPC_DEBUG_WATCH_WRITE)
- dbg_reg->dbcr0 |= DBCR0_DAC2W;
- dbg_reg->dac2 = addr;
- break;
- default:
- return -EINVAL;
- }
- dbg_reg->dbcr0 |= DBCR0_IDM;
- return 0;
- }
- void kvm_guest_protect_msr(struct kvm_vcpu *vcpu, ulong prot_bitmap, bool set)
- {
- /* XXX: Add similar MSR protection for BookE-PR */
- #ifdef CONFIG_KVM_BOOKE_HV
- BUG_ON(prot_bitmap & ~(MSRP_UCLEP | MSRP_DEP | MSRP_PMMP));
- if (set) {
- if (prot_bitm…