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[Qemu-devel] Re: Write cache enable from guest at runtime

From: Christoph Hellwig
Subject: [Qemu-devel] Re: Write cache enable from guest at runtime
Date: Tue, 15 Mar 2011 11:50:40 +0100
User-agent: Mutt/1.5.17 (2007-11-01)

On Mon, Mar 14, 2011 at 07:15:14PM +0000, Stefan Hajnoczi wrote:
> Sounds like a good idea.  Feel free to post the patches RFC and I or
> someone else can debug and polish them if you don't have time.

By looking at your document and doing what you recommend against I think I
got a much simpler solution than what I had before.

I didn't know we could actually write to the config space.  The vpcu
synchronous behaviour is not a problem as it's done seldomly, and we
can trivially check against errors by reading the value back.

I've just started building this variant, and it seems surprisingly simple.

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