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Re: [Xen-devel] [PATCH] AMD IOMMU: Defer IO pagetable construction until
| To: | Wei Wang2 <wei.wang2@xxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] [PATCH] AMD IOMMU: Defer IO pagetable construction until device assignment |
| From: | Keir Fraser <keir.fraser@xxxxxxxxxxxxx> |
| Date: | Wed, 02 Apr 2008 16:26:40 +0100 |
| Cc: | xen-devel@xxxxxxxxxxxxxxxxxxx |
| Delivery-date: | Wed, 02 Apr 2008 08:28:35 -0700 |
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| Thread-topic: | [Xen-devel] [PATCH] AMD IOMMU: Defer IO pagetable construction until device assignment |
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On 2/4/08 16:25, "Wei Wang2" <wei.wang2@xxxxxxx> wrote: >> I think you should leave p2m.c as it is, and then synchronise on creation of >> the iommu tables from within amd_iommu_map_page(). You already have a >> mapping_lock in there which might do the trick. > I will update it. Maybe I need a new flag to indicate that I/O page tables has > been synchronised.. Set and checked under the mapping lock. Yes, that would indeed work. -- Keir _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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