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Open Source and information security mailing list archives
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Date: Wed, 13 Dec 2006 11:53:45 -0800 From: Chris Wedgwood <cw@...f.org> To: Christoph Anton Mitterer <calestyo@...entia.net> Cc: Karsten Weiss <K.Weiss@...ence-computing.de>, linux-kernel@...r.kernel.org, Erik Andersen <andersen@...epoet.org>, Andi Kleen <ak@...e.de> Subject: Re: data corruption with nvidia chipsets and IDE/SATA drives // memory hole mapping related bug?! On Wed, Dec 13, 2006 at 08:18:21PM +0100, Christoph Anton Mitterer wrote: > booting with iommu=soft => works fine > booting with iommu=noagp => DOESN'T solve the error > booting with iommu=off => the system doesn't even boot and panics > When I set IOMMU to disabled in the BIOS the error is not solved- > I tried to set bigger space for the IOMMU in the BIOS (256MB instead of > 64MB),.. but it does not solve the problem. > Any ideas why iommu=disabled in the bios does not solve the issue? The kernel will still use the IOMMU if the BIOS doesn't set it up if it can, check your dmesg for IOMMU strings, there might be something printed to this effect. > 1) And does this now mean that there's an error in the hardware > (chipset or CPU/memcontroller)? My guess is it's a kernel bug, I don't know for certain. Perhaps we shaould start making a more comprehensive list of affected kernels & CPUs? - To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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