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    SubjectRe: SW-IOMMU / ata_piix errors with 2.6.27-rc1
    Robert Hancock wrote:
    > Juergen Kreileder wrote:
    >> Hi,
    >>
    >> I get lots of errors like this with 2.6.27-rc1 on my
    >> Macbook Pro (3rd generation), 2.6.26 seems to work fine:
    >>
    >> [ 907.524509] DMA: Out of SW-IOMMU space for 45056 bytes at device 0000:00:1f.2
    >> [ 907.524783] ata3.00: exception Emask 0x0 SAct 0x0 SErr 0x0 action 0x0
    >> [ 907.524796] ata3.00: cmd 35/00:50:08:91:5c/00:01:0f:00:00/e0 tag 0 dma 172032 out
    >> [ 907.524798] res 50/00:00:ff:90:5c/00:00:0f:00:00/ef Emask 0x40 (internal error)
    >> [ 907.524805] ata3.00: status: { DRDY }
    >> [ 907.646590] ata3.00: configured for UDMA/133
    >> [ 907.646624] ata3: EH complete

    >>
    >>
    >> Any suggestions?
    >
    > You can try increasing the swiotlb size by booting with swiotlb=65536
    > (for 128MB) or swiotlb=131072 (for 256MB), and see if that makes the
    > problem go away.. It's unclear why you'd be running out of SWIOTLB space
    > now, though, if 2.6.26 worked fine..

    Still happening, although 256M make it a bit harder to trigger.


    Juergen

    --
    Juergen Kreileder, Blackdown Java-Linux Team
    http://blog.blackdown.de/


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