Messages in this thread Patch in this message | | | From | Radim Krčmář <> | Subject | [PATCH 1/3] KVM: x86: handle 0 write to TSC_DEADLINE MSR | Date | Fri, 6 Oct 2017 19:25:53 +0200 |
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0 should disable the timer, but start_hv_timer will recognize it as an expired timer instead.
Signed-off-by: Radim Krčmář <rkrcmar@redhat.com> --- arch/x86/kvm/lapic.c | 3 +++ 1 file changed, 3 insertions(+)
diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c index 2c9e88a82738..39c1ae11ce1d 100644 --- a/arch/x86/kvm/lapic.c +++ b/arch/x86/kvm/lapic.c @@ -1549,6 +1549,9 @@ static bool start_hv_timer(struct kvm_lapic *apic) if (!apic_lvtt_period(apic) && atomic_read(&ktimer->pending)) return false; + if (!ktimer->tscdeadline) + return false; + r = kvm_x86_ops->set_hv_timer(apic->vcpu, ktimer->tscdeadline); if (r < 0) return false; -- 2.14.2
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