On Tue, 28 Apr 2009 14:18:57 +0500 **UNKNOWN CHARSET** <optimusgd@xxxxxxxxx> wrote: > No, it is regression. I can reproduce that without allowdac and any > other unnecessary boot options. Hmm, in the bug repport, you said that you can't reproduce the problem: http://bugzilla.kernel.org/show_bug.cgi?id=13001#c15 I can't find your comment like, "I can reproduce that without allowdac". > In later discussion Grant Grundler ask > me apply patch that show 32 bit dma devices in my system. Results I > attached to bugreport. Looks like only one 32 bit dma device in my > system is ata controller, sata-nv. Hmm, looks like http://bugzilla.kernel.org/attachment.cgi?id=20895 said that pata_amd and sata_nv use 32bit dma mask. > I can stable reproduce IOMMU out of space when I write data to sata > drive. Ok, let's figure out what's wrong. First, can you test v2.6.30-rc3 with the following patch? http://www.kernel.org/pub/linux/kernel/people/tomo/misc/gart-debug.diff Note that please enable CONFIG_DMA_API_DEBUG, CONFIG_IOMMU_DEBUG, and CONFIG_IOMMU_LEAK and see if you can reproduce the problem (of course, don't use any kernel option). When the kernel is out of IOMMU space, it prints some useful information. -- To unsubscribe from this list: send the line "unsubscribe kernel-testers" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
