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authorJim Mattson <jmattson@google.com>2020-05-08 13:36:42 -0700
committerPaolo Bonzini <pbonzini@redhat.com>2020-05-15 12:26:25 -0400
commitada0098df6569b7f9e9495beb0f1e35718895aa0 (patch)
treee1cb985092930de0a0bc9008b45eaa8edffd6304 /arch/x86/kvm/vmx
parent1739f3d56d24a121535b45267d85b7fe6f6cc4ab (diff)
KVM: nVMX: Change emulated VMX-preemption timer hrtimer to absolute
Prepare for migration of this hrtimer, by changing it from relative to absolute. (I couldn't get migration to work with a relative timer.) Signed-off-by: Jim Mattson <jmattson@google.com> Reviewed-by: Peter Shier <pshier@google.com> Reviewed-by: Oliver Upton <oupton@google.com> Message-Id: <20200508203643.85477-3-jmattson@google.com> Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>
Diffstat (limited to 'arch/x86/kvm/vmx')
-rw-r--r--arch/x86/kvm/vmx/nested.c5
1 files changed, 3 insertions, 2 deletions
diff --git a/arch/x86/kvm/vmx/nested.c b/arch/x86/kvm/vmx/nested.c
index 3d50e50de626..51ebb60e1533 100644
--- a/arch/x86/kvm/vmx/nested.c
+++ b/arch/x86/kvm/vmx/nested.c
@@ -2113,7 +2113,8 @@ static void vmx_start_preemption_timer(struct kvm_vcpu *vcpu)
preemption_timeout *= 1000000;
do_div(preemption_timeout, vcpu->arch.virtual_tsc_khz);
hrtimer_start(&vmx->nested.preemption_timer,
- ns_to_ktime(preemption_timeout), HRTIMER_MODE_REL_PINNED);
+ ktime_add_ns(ktime_get(), preemption_timeout),
+ HRTIMER_MODE_ABS_PINNED);
}
static u64 nested_vmx_calc_efer(struct vcpu_vmx *vmx, struct vmcs12 *vmcs12)
@@ -4673,7 +4674,7 @@ static int enter_vmx_operation(struct kvm_vcpu *vcpu)
goto out_shadow_vmcs;
hrtimer_init(&vmx->nested.preemption_timer, CLOCK_MONOTONIC,
- HRTIMER_MODE_REL_PINNED);
+ HRTIMER_MODE_ABS_PINNED);
vmx->nested.preemption_timer.function = vmx_preemption_timer_fn;
vmx->nested.vpid02 = allocate_vpid();