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Commit a7b9d2cc authored by Gleb Natapov's avatar Gleb Natapov Committed by Avi Kivity
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KVM: PMU: warn when pin control is set in eventsel msr



Print warning once if pin control bit is set in eventsel msr since
emulation does not support it yet.

Signed-off-by: default avatarGleb Natapov <gleb@redhat.com>
Signed-off-by: default avatarAvi Kivity <avi@redhat.com>
parent 9ee73970
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+1 −0
Original line number Diff line number Diff line
@@ -23,6 +23,7 @@
#define ARCH_PERFMON_EVENTSEL_USR			(1ULL << 16)
#define ARCH_PERFMON_EVENTSEL_OS			(1ULL << 17)
#define ARCH_PERFMON_EVENTSEL_EDGE			(1ULL << 18)
#define ARCH_PERFMON_EVENTSEL_PIN_CONTROL		(1ULL << 19)
#define ARCH_PERFMON_EVENTSEL_INT			(1ULL << 20)
#define ARCH_PERFMON_EVENTSEL_ANY			(1ULL << 21)
#define ARCH_PERFMON_EVENTSEL_ENABLE			(1ULL << 22)
+3 −0
Original line number Diff line number Diff line
@@ -210,6 +210,9 @@ static void reprogram_gp_counter(struct kvm_pmc *pmc, u64 eventsel)
	unsigned config, type = PERF_TYPE_RAW;
	u8 event_select, unit_mask;

	if (eventsel & ARCH_PERFMON_EVENTSEL_PIN_CONTROL)
		printk_once("kvm pmu: pin control bit is ignored\n");

	pmc->eventsel = eventsel;

	stop_counter(pmc);