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Re: [Qemu-devel] [PATCH 1/2] Move graphic-related coalesced MMIO flushes


From: Jan Kiszka
Subject: Re: [Qemu-devel] [PATCH 1/2] Move graphic-related coalesced MMIO flushes to affected device models
Date: Tue, 18 Oct 2011 16:05:36 +0200
User-agent: Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666

On 2011-10-18 16:00, Avi Kivity wrote:
> On 09/30/2011 01:31 PM, Jan Kiszka wrote:
>> This is conceptually cleaner and will allow us to drop the nographic
>> timer. Moreover, it will be mandatory to fully exploit future per-device
>> coalesced MMIO rings.
>>
> 
> Appears to break winxp installation - the guest enters an infinite
> bitblt loop.  Trying to find out why.

Hmm, maybe there are side effects in certain modes that actually
disallow coalescing.

Jan

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Siemens AG, Corporate Technology, CT T DE IT 1
Corporate Competence Center Embedded Linux



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