lkml.org 
[lkml]   [2021]   [Mar]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
 
Messages in this thread
Patch in this message
/
From
Subject[PATCH] KVM: LAPIC: Advancing the timer expiration on guest initiated write
Date
From: Wanpeng Li <wanpengli@tencent.com>

Advancing the timer expiration should only be necessary on guest initiated
writes. Now, we cancel the timer, clear .pending and clear expired_tscdeadline
at the same time during state restore.

Signed-off-by: Wanpeng Li <wanpengli@tencent.com>
---
arch/x86/kvm/lapic.c | 1 +
1 file changed, 1 insertion(+)

diff --git a/arch/x86/kvm/lapic.c b/arch/x86/kvm/lapic.c
index 45d40bf..f2b6e79 100644
--- a/arch/x86/kvm/lapic.c
+++ b/arch/x86/kvm/lapic.c
@@ -2595,6 +2595,7 @@ int kvm_apic_set_state(struct kvm_vcpu *vcpu, struct kvm_lapic_state *s)

apic_update_ppr(apic);
hrtimer_cancel(&apic->lapic_timer.timer);
+ apic->lapic_timer.expired_tscdeadline = 0;
apic_update_lvtt(apic);
apic_manage_nmi_watchdog(apic, kvm_lapic_get_reg(apic, APIC_LVT0));
update_divide_count(apic);
--
2.7.4
\
 
 \ /
  Last update: 2021-03-02 16:40    [W:0.099 / U:0.148 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site