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Re: [Xen-devel] [PATCH 1/2] graphics passthrough with VT-d

To: "Han, Weidong" <weidong.han@xxxxxxxxx>, "'xen-devel@xxxxxxxxxxxxxxxxxxx'" <xen-devel@xxxxxxxxxxxxxxxxxxx>
Subject: Re: [Xen-devel] [PATCH 1/2] graphics passthrough with VT-d
From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
Date: Fri, 28 Aug 2009 09:45:21 +0100
Cc: "Lin, Ben Y" <ben.y.lin@xxxxxxxxx>, "Kay, Allen M" <allen.m.kay@xxxxxxxxx>, Jean Guyader <Jean.Guyader@xxxxxxxxxx>, "'bengheng@xxxxxxxxxxxxxx'" <bengheng@xxxxxxxxxxxxxx>
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On 28/08/2009 08:54, "Han, Weidong" <weidong.han@xxxxxxxxx> 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

Hvmloader will auto-size the MMIO hole. You shouldn't need to change the
default initial size of the hole.

 -- Keir

>   - add a config option 'gfx_passthru' for gfx passthrough

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