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xen-devel
RE: [Xen-devel] Problem: Pattern with vertical colored lines on the dom
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To: |
Jan Beulich <JBeulich@xxxxxxxxxx> |
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Subject: |
RE: [Xen-devel] Problem: Pattern with vertical colored lines on the dom0 screen |
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From: |
"Kay, Allen M" <allen.m.kay@xxxxxxxxx> |
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Date: |
Mon, 4 Oct 2010 11:15:14 -0700 |
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"xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Rzeszutek Wilk <konrad.wilk@xxxxxxxxxx>, "Han, Weidong" <weidong.han@xxxxxxxxx>, Dietmar Hahn <dietmar.hahn@xxxxxxxxxxxxxx>, Konrad, Keir Fraser <keir.fraser@xxxxxxxxxxxxx>, Jean Guyader <jean.guyader@xxxxxxxxx> |
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Mon, 04 Oct 2010 11:33:27 -0700 |
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<201009171520.11903.dietmar.hahn@xxxxxxxxxxxxxx> <201009241310.19462.dietmar.hahn@xxxxxxxxxxxxxx> <AANLkTin5bZdZch9y1kqUxoJHW8K4LMU5PUcuTpQLmZ0h@xxxxxxxxxxxxxx> <201009271406.26670.dietmar.hahn@xxxxxxxxxxxxxx> <20100927164706.GC4741@xxxxxxxxxxxx> <987664A83D2D224EAE907B061CE93D5301605D89C0@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <4CA9AB33020000780001A522@xxxxxxxxxxxxxxxxxx> <987664A83D2D224EAE907B061CE93D530160643BAC@xxxxxxxxxxxxxxxxxxxxxxxxxxxx> <4CAA0DB1020000780001A6BC@xxxxxxxxxxxxxxxxxx> |
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Actj2DA6Pu8igamRS+S5UtelCj/CZQAFz1HQ |
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Thread-topic: |
[Xen-devel] Problem: Pattern with vertical colored lines on the dom0 screen |
> Yes, and vendor/class check would seem reasonable here.
How do you differentiate Intel IGD and discrete graphics with this method?
> Perhaps I didn't say clearly enough what I mean: I'd want the first
> if()'s constituents changed (i.e. to
>
> if ( is_igd_drhd(drhd) && !is_igd_vt_enabled() )
>
>) so that the easy test gets executed first, and the PCI config
>space access is avoided as much as possible. This would be less
>of an issue if you knew that the device you're trying to read
>from is actually an IGD.
Sounds reasonable thing to do as a general rule. By the way the code here is
only used during boot time. I will change it as part of the vt-d quirk
consolidation and cleanup.
allen
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