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[Qemu-devel] Re: [PATCH] qemu/pci: optimize pci config handling


From: Paolo Bonzini
Subject: [Qemu-devel] Re: [PATCH] qemu/pci: optimize pci config handling
Date: Wed, 07 Oct 2009 15:01:39 +0200
User-agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.1) Gecko/20090814 Fedora/3.0-2.6.b3.fc11 Lightning/1.0pre Thunderbird/3.0b3

On 10/07/2009 02:33 PM, Michael S. Tsirkin wrote:
There's no need to save all of config space before each config cycle:
just the 64 byte header is enough for our purposes.  This will become
more important as we add pci express support, which has 4K config space.

You can even go a step further and save it only if something is actually being changed. Untested though.

Not-quite-signed-off-by: Paolo Bonzini <address@hidden>

Paolo

Attachment: qemu-write-pci.patch
Description: Text document


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