On Mon, 6 Apr 2009 23:48:16 +0100 Alan Cox <alan@xxxxxxxxxxxxxxxxxxx> wrote: > > > Mar 31 20:59:01 rngmhpamd end_request: I/O error, dev sdc, sector 1137 > > > Mar 31 20:59:01 rngmhpamd __ratelimit: 246 callbacks suppressed > > > > Do we have any debugging option for dumping the current PCI DMA > > allocations, find out where it has all gone? > > Turn on CONFIG_IOMMU_LEAK and CONFIG_IOMMU_DEBUG for a test run. These options don't tell who leaks dma mappings so possibly it isn't very helpful. There is no interesting changes in GART IOMMU between 2.6.28 and 2.6.29 so probably this is a driver bug. It's necessary to find out which driver leaks dma mappings. -- To unsubscribe from this list: send the line "unsubscribe linux-ide" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
