http://bugzilla.kernel.org/show_bug.cgi?id=7246
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------- Comment #13 from [EMAIL PROTECTED] 2008-02-25 11:54 -------
Javier,
The final issue you are talking about (different from original issue in this
bugzilla entry):
The 3w-xxxx driver calling pci_map_sg() with sc_data_direction ==
DMA_BIDIRECTIONAL caused data corruption when going through swiotlb.c, on EM64T
with 4GB or higher of RAM. AMD64 systems using IOMMU were never affected.
This problem doesn't exist in the 3w-xxxx driver in kernels 2.6.23 and higher.
The reason is the 'scsi data buffer accessors' patches removed most instances
of scsi drivers calling pci_map_sg() and replaced them with scsi_dma_map().
This corrected the problem of the 3w-xxxx driver over-riding the default
sc_data_direction that was causing data corruption with EM64T systems with
4GB+ RAM.
If you need a driver update for an older kernel to fix this issue, please go to
www.3ware.com, however no driver patch to 3w-xxxx needs to be sent to the
kernel tree to fix this issue.
Please close this BUG.
-Adam Radford
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