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From: Avi Kivity <avi@redhat.com>
To: Jan Kiszka <jan.kiszka@siemens.com>
Cc: Stefan Hajnoczi <stefanha@linux.vnet.ibm.com>,
	Marcelo Tosatti <mtosatti@redhat.com>, kvm <kvm@vger.kernel.org>,
	Anthony Liguori <aliguori@us.ibm.com>,
	Kevin Wolf <kwolf@redhat.com>
Subject: Re: [PATCH] qemu-kvm: Switch POSIX compat AIO implementation to upstream
Date: Mon, 26 Sep 2011 20:24:47 +0300	[thread overview]
Message-ID: <4E80B55F.5020203@redhat.com> (raw)
In-Reply-To: <4E80B50B.9000301@siemens.com>

On 09/26/2011 08:23 PM, Jan Kiszka wrote:
> >
> >  Perhaps qemu_eventfd() can be used in the future instead of an explicit
> >  pipe.  Then Linux will do eventfd while other OSes will fall back to
> >  pipes.
>
> Basically simpler code, or does this also have runtime benefits?
>

In corner cases, the completion can block on the write() with pipes, but 
not eventfd.

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


  reply	other threads:[~2011-09-26 17:24 UTC|newest]

Thread overview: 27+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2011-09-20 16:49 [PATCH] qemu-kvm: Switch POSIX compat AIO implementation to upstream Jan Kiszka
2011-09-21  8:06 ` Stefan Hajnoczi
2011-09-26 17:23   ` Jan Kiszka
2011-09-26 17:24     ` Avi Kivity [this message]
2011-09-26 18:09       ` Anthony Liguori
2011-09-27  9:00         ` Avi Kivity
2011-09-27 13:56           ` [Qemu-devel] [PATCH] Use qemu_eventfd for POSIX AIO Jan Kiszka
2011-09-27 14:07             ` Anthony Liguori
2011-09-27 14:11               ` Avi Kivity
2011-09-27 14:19                 ` Anthony Liguori
2011-09-27 14:22                   ` Avi Kivity
2011-09-27 14:22                   ` Jan Kiszka
2011-09-27 14:38                     ` Anthony Liguori
2011-09-27 14:29               ` Jan Kiszka
2011-09-27 14:34                 ` Avi Kivity
2011-09-27 14:36                   ` Jan Kiszka
2011-09-27 14:42                     ` Avi Kivity
2011-09-27 14:45                       ` Jan Kiszka
2011-09-27 14:48                         ` Avi Kivity
2011-09-27 14:50                           ` Jan Kiszka
2011-09-27 14:54                             ` Avi Kivity
2011-09-27 14:57                               ` Anthony Liguori
2011-09-27 14:59                               ` Jan Kiszka
2011-09-27 14:36                 ` Anthony Liguori
2011-09-27 14:41               ` Paolo Bonzini
2011-09-21  8:16 ` [PATCH] qemu-kvm: Switch POSIX compat AIO implementation to upstream Kevin Wolf
2011-09-26 16:56 ` Avi Kivity

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