Commit f15a75ee authored Aug 30, 2016 by Wanpeng Li Committed by Paolo Bonzini Sep 07, 2016

KVM: nVMX: make emulated nested preemption timer pinned

Commit 61abdbe0 ("kvm: x86: make lapic hrtimer pinned") pins the emulated
lapic timer. This patch does the same for the emulated nested preemption
timer to avoid vmexit an unrelated vCPU and the latency of kicking IPI to
another vCPU.

Cc: Paolo Bonzini <pbonzini@redhat.com>
Cc: Radim Krčmář <rkrcmar@redhat.com>
Cc: Yunhong Jiang <yunhong.jiang@intel.com>
Signed-off-by: Wanpeng Li <wanpeng.li@hotmail.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

parent 72e0ae58

arch/x86/kvm/vmx.c

+1 −1

Original line number	Diff line number	Diff line
		@@ -7013,7 +7013,7 @@ static int handle_vmon(struct kvm_vcpu *vcpu)
		vmx->nested.vmcs02_num = 0;

		hrtimer_init(&vmx->nested.preemption_timer, CLOCK_MONOTONIC,
		HRTIMER_MODE_REL);
		HRTIMER_MODE_REL_PINNED);
		vmx->nested.preemption_timer.function = vmx_preemption_timer_fn;

		vmx->nested.vmxon = true;

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