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arm64: KVM: Add access handler for PMCR register

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Add reset handler which gets host value of PMCR_EL0 and make writable
bits architecturally UNKNOWN except PMCR.E which is zero. Add an access
handler for PMCR.

Signed-off-by: Shannon Zhao <shannon.zhao@linaro.org>
Reviewed-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
This commit is contained in:
Shannon Zhao 2015-06-18 16:01:53 +08:00 • committed by Marc Zyngier
commit ab9468340d
3 changed files with 47 additions and 2 deletions
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4
include/kvm/arm_pmu.h
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@ -34,9 +34,13 @@ struct kvm_pmu {
struct kvm_pmc pmc[ARMV8_PMU_MAX_COUNTERS];
bool ready;
};
#define kvm_arm_pmu_v3_ready(v) ((v)->arch.pmu.ready)
#else
struct kvm_pmu {
};
#define kvm_arm_pmu_v3_ready(v) (false)
#endif
#endif