linux-kernel - Re: [PATCH 3/3] eventfd: add internal reference counting to fix notifier race conditions

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Message-ID: <4A3FDAF1.6010700@novell.com>
Date:	Mon, 22 Jun 2009 15:26:41 -0400
From:	Gregory Haskins <ghaskins@...ell.com>
To:	"Michael S. Tsirkin" <mst@...hat.com>
CC:	Davide Libenzi <davidel@...ilserver.org>, kvm@...r.kernel.org,
	Linux Kernel Mailing List <linux-kernel@...r.kernel.org>,
	avi@...hat.com, paulmck@...ux.vnet.ibm.com,
	Ingo Molnar <mingo@...e.hu>,
	Rusty Russell <rusty@...tcorp.com.au>
Subject: Re: [PATCH 3/3] eventfd: add internal reference counting to fix	notifier
 race conditions

Michael S. Tsirkin wrote:
> On Mon, Jun 22, 2009 at 11:51:42AM -0700, Davide Libenzi wrote:
>   
>> A file* based kernel-to-kernel interface is rather wrong IMO.
>>     
>
> But eventfd_ctx should work fine.
>   

Yeah, and I guess we can always just say that qemu can't close the fd or
something.  Seems hacky, but it might work if Davide insists we need his
change.

-Greg


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