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Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2


From: Richard W.M. Jones
Subject: Re: [Qemu-devel] Anyone seeing huge slowdown launching qemu with Linux 2.6.35?
Date: Tue, 3 Aug 2010 17:43:08 +0100
User-agent: Mutt/1.5.20 (2009-12-10)

On Tue, Aug 03, 2010 at 11:39:43AM -0500, Anthony Liguori wrote:
> Let's be fair.  I think we've all agreed to adjust the fw_cfg
> interface to implement DMA.  The only requirement was that the DMA
> operation not be triggered from a single port I/O but rather based
> on a polling operation which better fits the way real hardware
> works.

The patch I posted requires that the caller poll a register, so
hopefully this requirement is satisfied.

The other requirement was that the interface be discoverable, which is
also something in the latest version of the patch that I just posted.

Rich.

-- 
Richard Jones, Virtualization Group, Red Hat http://people.redhat.com/~rjones
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