linux-kernel - Re: [PATCH] kvm: fix crash on irqfd deassign

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Message-ID: <20110322125053.GB32414@redhat.com>
Date:	Tue, 22 Mar 2011 14:50:53 +0200
From:	"Michael S. Tsirkin" <mst@...hat.com>
To:	Avi Kivity <avi@...hat.com>
Cc:	Marcelo Tosatti <mtosatti@...hat.com>, kvm@...r.kernel.org,
	linux-kernel@...r.kernel.org, jean-philippe.menil@...v-nantes.fr,
	stable@...nel.org, Jason Wang <jasowang@...hat.com>
Subject: Re: [PATCH] kvm: fix crash on irqfd deassign

On Tue, Mar 22, 2011 at 02:37:27PM +0200, Avi Kivity wrote:
> On 03/17/2011 10:53 AM, Michael S. Tsirkin wrote:
> >irqfd in kvm used flush_work incorrectly:
> >it assumed that work scheduled previously can't run
> >after flush_work, but since kvm uses a non-reentrant
> >workqueue (by means of schedule_work)
> >we need flush_work_sync to get that guarantee.
> >
> >Signed-off-by: Michael S. Tsirkin<mst@...hat.com>
> >Reported-by: Jean-Philippe Menil<jean-philippe.menil@...v-nantes.fr>
> >Tested-by: Jean-Philippe Menil<jean-philippe.menil@...v-nantes.fr>
> >---
> >
> >Note: this is needed for kernel 2.6.39 and earlier.
> >
> 
> What about kvm.git master?

Sorry about the confusion.

Clarification: this is needed on  kvm.git master,
as well as 2.6.39 and earlier.

> -- 
> error compiling committee.c: too many arguments to function
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