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authorGleb Natapov <gleb@redhat.com>2012-02-26 16:55:40 +0200
committerAvi Kivity <avi@redhat.com>2012-03-08 14:13:18 +0200
commita7b9d2ccc3d86303ee9314612d301966e04011c7 (patch)
tree955dc7c9346e4aa34dddff9b1d3dd54253d783d0 /arch/x86/kvm/pmu.c
parent9ee73970c03edb68146ceb1ba2a7033c99a5e017 (diff)
downloadlinux-stericsson-a7b9d2ccc3d86303ee9314612d301966e04011c7.tar.gz
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: Gleb Natapov <gleb@redhat.com> Signed-off-by: Avi Kivity <avi@redhat.com>
Diffstat (limited to 'arch/x86/kvm/pmu.c')
-rw-r--r--arch/x86/kvm/pmu.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/x86/kvm/pmu.c b/arch/x86/kvm/pmu.c
index 3e48c1d3edcd..6af9a542e541 100644
--- a/arch/x86/kvm/pmu.c
+++ b/arch/x86/kvm/pmu.c
@@ -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);