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authorShannon Zhao <shannon.zhao@linaro.org>2015-09-08 12:26:13 +0800
committerMarc Zyngier <marc.zyngier@arm.com>2016-02-29 18:34:20 +0000
commit96b0eebcc6a14e3bdb9ff0e7176fbfc225bdde94 (patch)
treeafd6c0fcecda21c73164e7fee6c9bef65ee50e16 /include/kvm
parent051ff581ce70e822729e9474941f3c206cbf7436 (diff)
downloadop-kernel-dev-96b0eebcc6a14e3bdb9ff0e7176fbfc225bdde94.zip
op-kernel-dev-96b0eebcc6a14e3bdb9ff0e7176fbfc225bdde94.tar.gz
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')
-rw-r--r--include/kvm/arm_pmu.h9
1 files changed, 9 insertions, 0 deletions
diff --git a/include/kvm/arm_pmu.h b/include/kvm/arm_pmu.h
index bcb7698..b70058e 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
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