Re: 答复: [外部邮件] [PATCH 6.1.y] KVM: x86: fire timer when it is migrated and expired, and in oneshot mode

On Tue, Aug 20, 2024, Li,Rongqing wrote:

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From: Li RongQing lirongqing@baidu.com

[ Upstream Commit 8e6ed96cdd5001c55fccc80a17f651741c1ca7d2]

when the vCPU was migrated, if its timer is expired, KVM _should_ fire the timer ASAP, zeroing the deadline here will cause the timer to immediately fire on the destination

This patch increased the reproduce ratio of lapic timer interrupt losing,

Yep, this caused a painful amount of fallout in our environment.

which has been fixed by the following patch; so I think patch should not merge it into 6.1

David, can you prep a small series with both this patch and the fix below?

Thanks!

commit 9cfec6d097c607e36199cf0cfbb8cf5acbd8e9b2 Author: Haitao Shan hshan@google.com Date: Tue Sep 12 16:55:45 2023 -0700