[Xen-users] Out of SW-IOMMU space for 7222 bytes at device ...: swiotlb or dom0_mem?

[Chris Joelly <chris-m-lists@xxxxxxxxxx>]

Hello,

i am experiencing some strange errors from the xen kernel, all related
to SATA and SAS raid controllers, 3ware and LSI in my setup:

03:00.0 RAID bus controller: 3ware Inc 9650SE SATA-II RAID (rev 01)
08:00.0 SCSI storage controller: LSI Logic / Symbios Logic SAS1064ET 
PCI-Express Fusion-MPT SAS (rev 04)

Erros:
Out of SW-IOMMU space for 7222 bytes at device ...

i found somwhere on the internet that increasing dom0_mem and swiotlb
should do the trick, but thats unfortunately not true for my setup ...

can anybody tell whats this swiotlb value and how can i calculate a
appropriate value?

Chris

-- 
"The greatest proof that intelligent life other that humans exists in
 the universe is that none of it has tried to contact us!"


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