On 07/25/2007 05:22 PM, Chris Snook wrote: > Chuck Ebbert wrote: >> I have a report of random errors when using the atl1 driver >> with kernel 2.6.22.1. Could that be a problem fixed by the >> recent changes to DMA setup in 2.6.23-rc? > > I hope so. As far as we can tell the driver and the NIC itself are > doing the right thing, and the pci layer or chipset is screwing up the > 64-bit DMA. This only manifests when physical memory addresses cross > the 4 GB boundary, and as far as I'm aware atl1 is only used on desktop > boards, so we don't have a lot of testers. If someone wants to buy me > and Jay more RAM so we can test it ourselves, I guess we wouldn't object :) >
Our reporter has 8GB of memory in an x86_64 machine. https://bugzilla.redhat.com/bugzilla/show_bug.cgi?id=249511 > I favor disabling 64-bit DMA in atl1 until Atheros can track this down > in the lab. If we don't get confirmation that this bug is fixed by the > DMA changes, I think we should revert to 32-bit DMA for 2.6.23. > Limiting ourselves to 32-bit DMA on desktop systems is a lot less bad > than allowing arbitrary memory corruption. > This is what was committed. http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=3f516c00d416bd39aab6cfb348b68919e295fe23 http://git.kernel.org/git/?p=linux/kernel/git/torvalds/linux-2.6.git;a=commit;h=ef76e3e2505db01f7d4b537854f4a177220c26c8 - To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html
