Messages in this thread | | | Subject | Re: [PATCH 2.6.22.y] ieee1394: revert "sbp2: enforce 32bit DMA mapping" | From | Benjamin Herrenschmidt <> | Date | Sun, 05 Aug 2007 10:15:26 +1000 |
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> > If setting 32-bit DMA mask fails on ppc64, that sounds like a problem > > with the DMA implementation on that architecture. There are enough cards > > out there that only support 32-bit DMA that this really needs to work.. > > Yes, could the PPC folks please have a look at it? Thanks.
Smells like we may have a bug there. No worries though, all current PPC machines have an iommu that will not give out addresses above 32 bits anyway, but I'll double check what's up.
Do you see something in dmesg when that happens ?
Ben.
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