From: Christoph Hellwig <hch@lst.de>
To: Stefan Hajnoczi <stefanha@gmail.com>
Cc: Kevin Wolf <kwolf@redhat.com>,
Anthony Liguori <aliguori@us.ibm.com>,
qemu-devel <qemu-devel@nongnu.org>,
Christoph Hellwig <hch@lst.de>,
Prerna Saxena <prerna@linux.vnet.ibm.com>
Subject: [Qemu-devel] Re: Write cache enable from guest at runtime
Date: Mon, 14 Mar 2011 18:16:27 +0100 [thread overview]
Message-ID: <20110314171627.GB1062@lst.de> (raw)
In-Reply-To: <AANLkTin7QzqiP_VH=ARu2T8mEagJR7=k-S4pLbMQ1ObE@mail.gmail.com>
On Mon, Mar 14, 2011 at 05:07:57PM +0000, Stefan Hajnoczi wrote:
> Hi Christoph,
> I have written up thoughts on write cache enable, including a
> workaround to change O_SYNC on a file without kernel changes:
>
> http://wiki.qemu.org/Features/WriteCacheEnable
>
> Guest ability to control write cache enable is useful and I'd like to
> see it in QEMU soon. Any thoughts about what I've posted? Care to
> submit your patches?
I have patches using Prerna's close and reopen method almost ready for posting.
Still fighting a bit with the new virtio code to wire it up.
Unlike your variant I actually added a generic change config request type,
which allows to re-use it for other runtime controllable features later.
next prev parent reply other threads:[~2011-03-14 17:16 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-14 17:07 [Qemu-devel] Write cache enable from guest at runtime Stefan Hajnoczi
2011-03-14 17:16 ` Christoph Hellwig [this message]
2011-03-14 19:15 ` [Qemu-devel] " Stefan Hajnoczi
2011-03-15 10:50 ` Christoph Hellwig
2011-03-15 11:21 ` Stefan Hajnoczi
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