From: Avi Kivity <avi@qumranet.com>
To: Marcelo Tosatti <mtosatti@redhat.com>
Cc: Chris Wright <chrisw@redhat.com>, kvm@vger.kernel.org
Subject: Re: [patch 1/2] KVM: consolidate check for pending vcpu requests
Date: Sun, 08 Jun 2008 10:10:16 +0300 [thread overview]
Message-ID: <484B85D8.1080908@qumranet.com> (raw)
In-Reply-To: <20080606194010.897342530@localhost.localdomain>
Marcelo Tosatti wrote:
> A guest vcpu instance can be scheduled to a different physical CPU
> between the test for KVM_REQ_MIGRATE_TIMER and local_irq_disable().
>
> If that happens, the timer will only be migrated to the current pCPU on
> the next exit, meaning that guest LAPIC timer event can be delayed until
> a host interrupt is triggered.
>
> Fix it by cancelling guest entry if any vcpu request is pending.
>
Applied, thanks.
--
error compiling committee.c: too many arguments to function
next prev parent reply other threads:[~2008-06-08 7:10 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-06-06 19:37 [patch 0/2] timer injection races Marcelo Tosatti
2008-06-06 19:37 ` [patch 1/2] KVM: consolidate check for pending vcpu requests Marcelo Tosatti
2008-06-08 7:10 ` Avi Kivity [this message]
2008-06-06 19:37 ` [patch 2/2] KVM: close timer injection race window in __vcpu_run Marcelo Tosatti
2008-06-08 7:17 ` Avi Kivity
2008-06-08 15:08 ` Marcelo Tosatti
2008-06-09 3:29 ` Marcelo Tosatti
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