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Re: [Xen-devel] [PATCH][QEMU] Clear bios framebuffer with minimal writes

To: Ben Guthro <bguthro@xxxxxxxxxxxxxxx>, xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH][QEMU] Clear bios framebuffer with minimal writes
From: Keir Fraser <Keir.Fraser@xxxxxxxxxxxx>
Date: Thu, 25 Oct 2007 15:20:12 +0100
Cc: Gary Grebus <ggrebus@xxxxxxxxxxxxxxx>
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On 24/10/07 22:04, "Ben Guthro" <bguthro@xxxxxxxxxxxxxxx> wrote:

> Support for VGA bios to clear framebuffer with minimal writes.
> 
> Signed-off-by: Ben Guthro <bguthro@xxxxxxxxxxxxxx>
> Signed-off-by: Gary Grebus <ggrebus@xxxxxxxxxxxxxxx>

Is this really just a workaround for the insane-sounding case of Vista
clearing the screen, as described in one of the comments? Do I understand
correctly, and it looks like Vista does 4096 writes for each iteration of
the rep stosw?

 -- Keir



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