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| author | Shannon Zhao | 2015-09-08 06:26:13 +0200 |
|---|---|---|
| committer | Marc Zyngier | 2016-02-29 19:34:20 +0100 |
| commit | 96b0eebcc6a14e3bdb9ff0e7176fbfc225bdde94 (patch) | |
| tree | afd6c0fcecda21c73164e7fee6c9bef65ee50e16 /include/kvm/arm_pmu.h | |
| parent | arm64: KVM: Add access handler for event counter register (diff) | |
| download | kernel-qcow2-linux-96b0eebcc6a14e3bdb9ff0e7176fbfc225bdde94.tar.gz kernel-qcow2-linux-96b0eebcc6a14e3bdb9ff0e7176fbfc225bdde94.tar.xz kernel-qcow2-linux-96b0eebcc6a14e3bdb9ff0e7176fbfc225bdde94.zip | |
arm64: KVM: Add access handler for PMCNTENSET and PMCNTENCLR register
Since the reset value of PMCNTENSET and PMCNTENCLR is UNKNOWN, use
reset_unknown for its reset handler. Add a handler to emulate writing
PMCNTENSET or PMCNTENCLR register.
When writing to PMCNTENSET, call perf_event_enable to enable the perf
event. When writing to PMCNTENCLR, call perf_event_disable to disable
the perf event.
Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Diffstat (limited to 'include/kvm/arm_pmu.h')
| -rw-r--r-- | include/kvm/arm_pmu.h | 9 |
1 files changed, 9 insertions, 0 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h index bcb769805839..b70058ef1dd6 100644 --- a/include/kvm/arm_pmu.h +++ b/include/kvm/arm_pmu.h @@ -40,6 +40,9 @@ struct kvm_pmu { #define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready) u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, u64 select_idx); void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val); +u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu); +void kvm_pmu_disable_counter(struct kvm_vcpu *vcpu, u64 val); +void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val); #else struct kvm_pmu { }; @@ -52,6 +55,12 @@ static inline u64 kvm_pmu_get_counter_value(struct kvm_vcpu *vcpu, } static inline void kvm_pmu_set_counter_value(struct kvm_vcpu *vcpu, u64 select_idx, u64 val) {} +static inline u64 kvm_pmu_valid_counter_mask(struct kvm_vcpu *vcpu) +{ + return 0; +} +static inline void kvm_pmu_disable_counter(struct kvm_vcpu *vcpu, u64 val) {} +static inline void kvm_pmu_enable_counter(struct kvm_vcpu *vcpu, u64 val) {} #endif #endif |