On Wed, 18 Feb 2009 17:05:44 -0500 Chuck Ebbert <cebbert@xxxxxxxxxx> wrote: > On Wed, 18 Feb 2009 15:25:16 -0500 > Chuck Ebbert <cebbert@xxxxxxxxxx> wrote: > > > On Tue, 17 Feb 2009 20:22:05 +0900 > > FUJITA Tomonori <fujita.tomonori@xxxxxxxxxxxxx> wrote: > > > > > > > > >>> sata_nv 0000:00:0d.0: DMA-API: device driver frees DMA memory with different > > > > >>> size [device address=0x00000000da031000] [map size=4096 bytes] [unmap > > > > >> That's rather curious. It seems to be saying that the sg length is > > > > >> different between the map and unmap, but it doesn't look like sata_nv > > > > >> mucks with that anywhere, and neither does libata core.. > > > > > > > > > > Could the SCSI code have merged two requests? > > > > > > > > I wouldn't think so.. and if it did it seems like it would have to have > > > > changed the list after libata got the request somehow.. > > > > > > Does this box uses GART IOMMU? > > > > I don't think so, but I've asked for the dmesg. > > Okay, it _is_ using GART IOMMU: > > DMA-API: preallocated 8192 debug entries > DMA-API: debugging enabled by kernel config > PCI-DMA: Disabling AGP. > PCI-DMA: aperture base @ 20000000 size 65536 KB > PCI-DMA: using GART IOMMU. > PCI-DMA: Reserving 64MB of IOMMU area in the AGP aperture Thanks, that makes sense. I think that the following patch could fix this: http://marc.info/?l=linux-ide&m=123484533504307&w=2 -- 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
