Reset the arch_timer on vcpu reset and configure guest virtual timer irq in the process.
Signed-off-by: Anup Patel anup.patel@linaro.org Signed-off-by: Pranavkumar Sawargaonkar pranavkumar@linaro.org --- arch/arm64/include/asm/kvm_arch_timer.h | 2 ++ arch/arm64/kvm/reset.c | 11 +++++++++++ 2 files changed, 13 insertions(+)
diff --git a/arch/arm64/include/asm/kvm_arch_timer.h b/arch/arm64/include/asm/kvm_arch_timer.h index eb02273..0f36603 100644 --- a/arch/arm64/include/asm/kvm_arch_timer.h +++ b/arch/arm64/include/asm/kvm_arch_timer.h @@ -50,6 +50,8 @@ struct arch_timer_cpu {
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); diff --git a/arch/arm64/kvm/reset.c b/arch/arm64/kvm/reset.c index 64e0740..7c9cebc 100644 --- a/arch/arm64/kvm/reset.c +++ b/arch/arm64/kvm/reset.c @@ -27,6 +27,7 @@ #include <asm/ptrace.h> #include <asm/kvm_arm.h> #include <asm/kvm_coproc.h> +#include <asm/kvm_arch_timer.h>
/* * ARMv8 Reset Values @@ -40,6 +41,11 @@ static struct kvm_regs default_regs_reset32 = { COMPAT_PSR_I_BIT | COMPAT_PSR_F_BIT), };
+static const struct kvm_irq_level default_vtimer_irq = { + .irq = 27, + .level = 1, +}; + static bool cpu_has_32bit_el1(void) { u64 pfr0; @@ -75,6 +81,7 @@ int kvm_arch_dev_ioctl_check_extension(long ext) 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) { default: @@ -86,6 +93,7 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) } else { cpu_reset = &default_regs_reset; } + cpu_vtimer_irq = &default_vtimer_irq; break; }
@@ -95,5 +103,8 @@ int kvm_reset_vcpu(struct kvm_vcpu *vcpu) /* Reset system registers */ kvm_reset_sys_regs(vcpu);
+ /* Reset arch_timer context */ + kvm_timer_vcpu_reset(vcpu, cpu_vtimer_irq); + return 0; }