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Re: [Qemu-devel] [PATCH 0/3] write barrier support


From: Avi Kivity
Subject: Re: [Qemu-devel] [PATCH 0/3] write barrier support
Date: Tue, 05 May 2009 16:53:25 +0300
User-agent: Thunderbird 2.0.0.21 (X11/20090320)

Christoph Hellwig wrote:
Add support for write barriers that allow guests to control write
ordering when write back cachin is enabled.

For now only the simple stack of virtio on posix raw/host devices is
supported.

I suggest emulating barriers for format drivers that don't support them by queuing the writes in the block layer and issuing a flush_all command.

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





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