On 30/08/2016 10:14, Wanpeng Li wrote:
> From: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
>
> Commit 61abdbe0bc ("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@xxxxxxxxxx>
> Cc: Radim Krčmář <rkrcmar@xxxxxxxxxx>
> Cc: Yunhong Jiang <yunhong.jiang@xxxxxxxxx>
> Signed-off-by: Wanpeng Li <wanpeng.li@xxxxxxxxxxx>
> ---
> arch/x86/kvm/vmx.c | 2 +-
> 1 file changed, 1 insertion(+), 1 deletion(-)
>
> diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c
> index 5cede40..090a3f8 100644
> --- a/arch/x86/kvm/vmx.c
> +++ b/arch/x86/kvm/vmx.c
> @@ -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;
>
Queued for 4.9, thanks.
Paolo
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