Messages in this thread | | | Date | Wed, 18 Feb 2004 22:34:15 +0100 | From | Andi Kleen <> | Subject | Re: [PATCH] Fix fencepost error in x86_64 IOMMU (2.4) |
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On Tue, 17 Feb 2004 16:14:46 -0500 Jim Paradis <jparadis@redhat.com> wrote:
> There's a fencepost error in the GART IOMMU handling on x86_64 > in the unmap path. When testing to see if the bus address is > within the IOMMU window and needs to be unmapped, the start of > the first page *beyond* the window also passes the test. This > can cause the first doubleword of the next page beyond the gatt > table to be smashed to zero, with unpredictable results depending > on what that page is used for. > > Patch attached for 2.4. The same problem also exists in 2.6, > for which I'll send a separate patch.
Thanks. I will add it to my tree.
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