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xen-devel
RE: [Xen-devel] [PATCH 1/2] graphics passthrough with VT-d
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To: |
'Jean Guyader' <jean.guyader@xxxxxxxxxx> |
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Subject: |
RE: [Xen-devel] [PATCH 1/2] graphics passthrough with VT-d |
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From: |
"Han, Weidong" <weidong.han@xxxxxxxxx> |
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Date: |
Fri, 28 Aug 2009 16:30:27 +0800 |
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"'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Lin, Ben Y" <ben.y.lin@xxxxxxxxx>, 'Keir, "Kay, Allen M" <allen.m.kay@xxxxxxxxx>, Fraser' <Keir.Fraser@xxxxxxxxxxxxx>, "'bengheng@xxxxxxxxxxxxxx'" <bengheng@xxxxxxxxxxxxxx> |
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Fri, 28 Aug 2009 01:31:36 -0700 |
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<20090828081232.GA14065@xxxxxxxxxx> |
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Thread-index: |
Acont1glOgPTbPuhSbC7kzETgPHAqgAAgGJw |
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Thread-topic: |
[Xen-devel] [PATCH 1/2] graphics passthrough with VT-d |
Jean Guyader wrote:
> On Fri, Aug 28, 2009 at 03:54:05AM -0400, Han, Weidong wrote:
>> This patch supports basic gfx passthrough on xen side:
>> - retrieves VGA bios from host VGA BIOS address (0xC0000), then
>> load it to guest VGA BIOS address (This is the same with XCI).
>> - Enlarge guest MMIO range to contain gfx card's large memory
>> - add a config option 'gfx_passthru' for gfx passthrough
>>
>> Signed-off-by: Ben Lin <ben.y.lin@xxxxxxxxx>
>> Signed-off-by: Weidong Han <weidong.han@xxxxxxxxx>
>
> Hi,
>
> First thanks for taking the time to upstream those patch
> that will help a lot.
>
> I think the patch will be let intrusive if we could do all
> that bios mapping + copying inside qemu so we don't need to
> modify the xc_hvm_build function.
>
> Qemu starts before the bios so that should be doable.
>
> Thanks,
> Jean
Sounds good.
You mean mapping + coping vgabios in hw/pc.c, right? We will go to change it.
Thanks.
Regards,
Weidong
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