Re: SW-IOMMU / ata_piix errors with 2.6.27-rc1

[Juergen Kreileder]

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/
--
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at  http://vger.kernel.org/majordomo-info.html
Please read the FAQ at  http://www.tux.org/lkml/