Messages in this thread | | | Date | Mon, 06 Feb 2006 13:49:39 -0800 (PST) | Subject | Re: [PATCH] ipr: don't doublefree pages from scatterlist | From | "David S. Miller" <> |
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From: Andi Kleen <ak@suse.de> Date: Mon, 6 Feb 2006 22:11:29 +0100
> Don't touch the non DMA members in the sg list in dma_map_sg in the IOMMU > > Some drivers (in particular ipr) ran into problems because they > reused the sg lists after passing them to pci_map_sg(). The merging > procedure in the K8 GART IOMMU corrupted the state. This patch > changes it to only touch the dma* entries during merging, > but not the other fields. Approach suggested by Dave Miller. > > I did some basic tests with CONFIG_IOMMU_DEBUG (LTP, large dd) > and without and it hold up, but needs more testing. > > Signed-off-by: Andi Kleen <ak@suse.de>
Thanks for doing this work Andi. - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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