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Re: [Xen-devel] [PATCH] amd iommu: Do not adjust paging mode for dom0 de
| To: | Wei Wang2 <wei.wang2@xxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] amd iommu: Do not adjust paging mode for dom0 devices |
| From: | Keir Fraser <keir@xxxxxxx> |
| Date: | Sun, 06 Feb 2011 16:58:18 +0000 |
| Cc: | "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx> |
| Delivery-date: | Sun, 06 Feb 2011 09:00:03 -0800 |
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| Thread-topic: | [Xen-devel] [PATCH] amd iommu: Do not adjust paging mode for dom0 devices |
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On 01/02/2011 17:34, "Wei Wang2" <wei.wang2@xxxxxxx> wrote: > Keir > Here is another small patch to fix consistency issue of paging mode when > return passthru devices back to dom0. In this case, paging mode should not be > adjusted, since dom0->max_pages = ~0U. The call to get_paging_mode() in amd_iommu_domain_init() looks sensible enough. Why is a call needed in reassign_device() at all? Checking for dom0 in reassign_device just looks like a fragile hack. -- Keir > Thanks, > Wei > Signed-off-by: Wei Wang <wei.wang2@xxxxxxx> > -- > Advanced Micro Devices GmbH > Sitz: Dornach, Gemeinde Aschheim, > Landkreis München Registergericht München, > HRB Nr. 43632 > WEEE-Reg-Nr: DE 12919551 > Geschäftsführer: > Alberto Bozzo, Andrew Bowd > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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