arm64: KVM: Add access handler for PMCNTENSET and PMCNTENCLR register

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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>

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Shannon Zhao 2015-09-08 12:26:13 +08:00 • committed by Marc Zyngier

parent 051ff581ce

commit 96b0eebcc6

4 changed files with 107 additions and 4 deletions

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include/kvm/arm_pmu.h

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