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Old 01-03-07, 03:35 PM   #46
krader
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Join Date: Dec 2006
Posts: 11
Default Re: nForce 4 corrupting data written to HDD

> I cannot confirm this. IIRC most people (if not all) had the problem
> solved when using MEM=2G or so.

That's because there appear to be two distinct problems. I just got off the phone with my counterpart at Red Hat. What they're seeing is a 4 KiB page being zerod unexpectedly. When they don't use the IOMMU (such as booting with "mem=2g") the problem goes away. That failure mode could be a Linux kernel defect or a hardware defect. The failure mode I'm seeing on my system are random 32-bit words of four of nine files being corrupted. My problem could not possibly be a kernel defect and definitely has nothing to do with the use of the hardware IOMMU as the corruption occurs with only 2 GiB installed, "mem=1g" as well as "iommu=soft".
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