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Subject: Re: [Qemu-devel] [Xen-devel] [PATCH 2/2] xen:i386:pc_piix: create
 isa bridge specific to IGD passthrough
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To: "Chen, Tiejun" <tiejun.chen@intel.com>, "Michael S. Tsirkin" <mst@redhat.com>
Cc: "xen-devel@lists.xensource.com" <xen-devel@lists.xensource.com>, "qemu-devel@nongnu.org" <qemu-devel@nongnu.org>

On 03/11/2014 08:48, Chen, Tiejun wrote:
>>>>> I think the point was mostly to reserve 1f to prevent
>>>>> devices from using it.
>>>>> As we populate slots in order it doesn't seem to important ...
>>>>
>>>> If we populate slot at !1f GFX driver can't find this ISA bridge.
>>>
>>> Right, but I mean if no special options are used, 1f will typically
>>> stay free without any effort on our side.
>>
>> Yeah.
>>
>> Actually based on current info we know, seems 1f is just specific to our
>> scenario :) So I always think we can occupy that. But Paolo and you can
>> really determine this point.
> 
> What's your idea?

I do not have any objection to always occupying 1f for Xen IGD passthrough.

Paolo