diff options
| -rw-r--r-- | arch/arm/kvm/reset.c | 12 | ||||
| -rw-r--r-- | include/kvm/arm_arch_timer.h | 4 | ||||
| -rw-r--r-- | virt/kvm/arm/arch_timer.c | 29 |
3 files changed, 36 insertions, 9 deletions
diff --git a/arch/arm/kvm/reset.c b/arch/arm/kvm/reset.c index b80256b554c..b7840e7aa45 100644 --- a/arch/arm/kvm/reset.c +++ b/arch/arm/kvm/reset.c @@ -27,6 +27,8 @@ #include <asm/kvm_arm.h> #include <asm/kvm_coproc.h> +#include <kvm/arm_arch_timer.h> + /****************************************************************************** * Cortex-A15 Reset Values */ @@ -37,6 +39,11 @@ static struct kvm_regs a15_regs_reset = { .usr_regs.ARM_cpsr = SVC_MODE | PSR_A_BIT | PSR_I_BIT | PSR_F_BIT, }; +static const struct kvm_irq_level a15_vtimer_irq = { + .irq = 27, + .level = 1, +}; + /******************************************************************************* * Exported reset function @@ -52,6 +59,7 @@ static struct kvm_regs a15_regs_reset = { int kvm_reset_vcpu(struct kvm_vcpu *vcpu) { struct kvm_regs *cpu_reset; + const struct kvm_irq_level *cpu_vtimer_irq; switch (vcpu->arch.target) { case KVM_ARM_TARGET_CORTEX_A15: @@ -59,6 +67,7 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) return -EINVAL; cpu_reset = &a15_regs_reset; vcpu->arch.midr = read_cpuid_id(); + cpu_vtimer_irq = &a15_vtimer_irq; break; default: return -ENODEV; @@ -70,5 +79,8 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) /* Reset CP15 registers */ kvm_reset_coprocs(vcpu); + /* Reset arch_timer context */ + kvm_timer_vcpu_reset(vcpu, cpu_vtimer_irq); + return 0; } diff --git a/include/kvm/arm_arch_timer.h b/include/kvm/arm_arch_timer.h index 68cb9e1dfb8..6d9aeddc09b 100644 --- a/include/kvm/arm_arch_timer.h +++ b/include/kvm/arm_arch_timer.h @@ -61,6 +61,8 @@ struct arch_timer_cpu { #ifdef CONFIG_KVM_ARM_TIMER int kvm_timer_hyp_init(void); int kvm_timer_init(struct kvm *kvm); +void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu, + const struct kvm_irq_level *irq); void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu); void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu); void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu); @@ -76,6 +78,8 @@ static inline int kvm_timer_init(struct kvm *kvm) return 0; } +static inline void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu, + const struct kvm_irq_level *irq) {} static inline void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu) {} static inline void kvm_timer_flush_hwstate(struct kvm_vcpu *vcpu) {} static inline void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu) {} diff --git a/virt/kvm/arm/arch_timer.c b/virt/kvm/arm/arch_timer.c index 2d00b292578..af4583e2c18 100644 --- a/virt/kvm/arm/arch_timer.c +++ b/virt/kvm/arm/arch_timer.c @@ -30,9 +30,7 @@ static struct timecounter *timecounter; static struct workqueue_struct *wqueue; -static struct kvm_irq_level timer_irq = { - .level = 1, -}; +static unsigned int host_vtimer_irq; static cycle_t kvm_phys_timer_read(void) { @@ -67,8 +65,8 @@ static void kvm_timer_inject_irq(struct kvm_vcpu *vcpu) timer->cntv_ctl |= ARCH_TIMER_CTRL_IT_MASK; kvm_vgic_inject_irq(vcpu->kvm, vcpu->vcpu_id, - vcpu->arch.timer_cpu.irq->irq, - vcpu->arch.timer_cpu.irq->level); + timer->irq->irq, + timer->irq->level); } static irqreturn_t kvm_arch_timer_handler(int irq, void *dev_id) @@ -156,6 +154,20 @@ void kvm_timer_sync_hwstate(struct kvm_vcpu *vcpu) timer_arm(timer, ns); } +void kvm_timer_vcpu_reset(struct kvm_vcpu *vcpu, + const struct kvm_irq_level *irq) +{ + struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; + + /* + * The vcpu timer irq number cannot be determined in + * kvm_timer_vcpu_init() because it is called much before + * kvm_vcpu_set_target(). To handle this, we determine + * vcpu timer irq number when the vcpu is reset. + */ + timer->irq = irq; +} + void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu) { struct arch_timer_cpu *timer = &vcpu->arch.timer_cpu; @@ -163,12 +175,11 @@ void kvm_timer_vcpu_init(struct kvm_vcpu *vcpu) INIT_WORK(&timer->expired, kvm_timer_inject_irq_work); hrtimer_init(&timer->timer, CLOCK_MONOTONIC, HRTIMER_MODE_ABS); timer->timer.function = kvm_timer_expire; - timer->irq = &timer_irq; } static void kvm_timer_init_interrupt(void *info) { - enable_percpu_irq(timer_irq.irq, 0); + enable_percpu_irq(host_vtimer_irq, 0); } @@ -182,7 +193,7 @@ static int kvm_timer_cpu_notify(struct notifier_block *self, break; case CPU_DYING: case CPU_DYING_FROZEN: - disable_percpu_irq(timer_irq.irq); + disable_percpu_irq(host_vtimer_irq); break; } @@ -229,7 +240,7 @@ int kvm_timer_hyp_init(void) goto out; } - timer_irq.irq = ppi; + host_vtimer_irq = ppi; err = register_cpu_notifier(&kvm_timer_cpu_nb); if (err) { |