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    |   xen-devel
Re: [Xen-devel] [PATCH 1/2] graphics passthrough with VT-d 
| To: | "Han, Weidong" <weidong.han@xxxxxxxxx> |  
| Subject: | Re: [Xen-devel] [PATCH 1/2] graphics passthrough with VT-d |  
| From: | Jean Guyader <jean.guyader@xxxxxxxxxx> |  
| Date: | Fri, 28 Aug 2009 09:12:32 +0100 |  
| Cc: | "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>, "Lin,	Ben Y" <ben.y.lin@xxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx>,	Fraser <Keir.Fraser@xxxxxxxxxxxxx>, Keir,	"'bengheng@xxxxxxxxxxxxxx'" <bengheng@xxxxxxxxxxxxxx> |  
| Delivery-date: | Fri, 28 Aug 2009 01:13:14 -0700 |  
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| Sender: | xen-devel-bounces@xxxxxxxxxxxxxxxxxxx |  
| User-agent: | Mutt/1.5.20 (2009-06-14) |  
| 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
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