From: Christoph Hellwig <hch@lst.de>
To: qemu-devel@nongnu.org
Cc: kwolf@redhat.com, stefanha@gmail.com,
"prerna@linux.vnet.ibm.com Anthony Liguori" <aliguori@us.ibm.com>
Subject: [Qemu-devel] [PATCH, RFC 0/4] allow guest control of the volatile write cache
Date: Tue, 15 Mar 2011 15:10:49 +0100 [thread overview]
Message-ID: <20110315141049.GA30627@lst.de> (raw)
This series adds support for the guest to control the volatile write
cache setting on disks exported by qemu for ide and virtio.
For ide it just wires up the existing SETFEATURES calls, and for virtio
it adds a new writeable config space field. SCSI is not supported at
this point, as the convoluted callback mess in the SCSI stack doesn't
allow commands except for plain WRITEs to read data from guest memory.
The backend is based on the code that Prerna posted a while ago,
and not Stefan's /proc based variant. I'm open to either one, but
the problem with the /proc based one is that it's Linux-specific.
next reply other threads:[~2011-03-15 14:10 UTC|newest]
Thread overview: 27+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-03-15 14:10 Christoph Hellwig [this message]
2011-03-15 14:11 ` [Qemu-devel] [PATCH 1/4] block: clarify the meaning of BDRV_O_NOCACHE Christoph Hellwig
2011-03-16 9:42 ` [Qemu-devel] " Stefan Hajnoczi
2011-03-16 9:55 ` Kevin Wolf
2011-03-16 14:08 ` Christoph Hellwig
2011-03-16 17:00 ` Stefan Hajnoczi
2011-03-17 9:07 ` Kevin Wolf
2011-03-17 9:18 ` Stefan Hajnoczi
2011-03-15 14:11 ` [Qemu-devel] [PATCH 2/4] block: add a helper to change writeback mode on the fly Christoph Hellwig
2011-03-15 14:11 ` [Qemu-devel] [PATCH 3/4] ide: wire up setfeatures cache control Christoph Hellwig
2011-03-15 14:11 ` [Qemu-devel] [PATCH 4/4] virtio-blk: add runtime " Christoph Hellwig
2011-03-16 9:49 ` [Qemu-devel] Re: [PATCH 2/4] block: add a helper to change writeback mode on the fly Stefan Hajnoczi
2011-03-16 9:59 ` Kevin Wolf
2011-03-17 14:44 ` [Qemu-devel] " Daniel P. Berrange
2011-03-17 15:11 ` Kevin Wolf
2011-03-17 16:44 ` Stefan Hajnoczi
2011-03-19 8:28 ` Blue Swirl
2011-03-15 14:16 ` [Qemu-devel] [PATCH, RFC] virtio_blk: add cache control support Christoph Hellwig
2011-03-16 4:09 ` [Qemu-devel] " Rusty Russell
2011-03-16 14:09 ` Christoph Hellwig
2011-03-17 5:06 ` Rusty Russell
2011-03-17 14:21 ` Christoph Hellwig
2011-03-24 0:11 ` Rusty Russell
2011-03-24 3:11 ` Anthony Liguori
2011-03-24 3:05 ` Anthony Liguori
2011-03-24 9:54 ` Christian Borntraeger
2011-03-25 5:08 ` Rusty Russell
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