From: Pavel Machek <pavel@ucw.cz>
To: Joerg Roedel <joerg.roedel@amd.com>
Cc: Ingo Molnar <mingo@redhat.com>,
linux-kernel@vger.kernel.org, iommu@lists.linux-foundation.org,
stable@kernel.org
Subject: Re: [PATCH 1/4] x86/amd-iommu: Workaround for erratum 63
Date: Thu, 5 Nov 2009 20:23:15 +0100 [thread overview]
Message-ID: <20091105192315.GD1392@ucw.cz> (raw)
In-Reply-To: <1256835012-31410-2-git-send-email-joerg.roedel@amd.com>
On Thu 2009-10-29 17:50:09, Joerg Roedel wrote:
> There is an erratum for IOMMU hardware which documents
> undefined behavior when forwarding SMI requests from
> peripherals and the DTE of that peripheral has a sysmgt
> value of 01b. This problem caused weird IO_PAGE_FAULTS in my
> case.
This should go to comment.
> +
> +
> +void amd_iommu_apply_erratum_63(u16 devid)
> +{
> + int sysmgt;
> +
...that should go here. Pointer to pdf with erratum would be cool,
too.
Pavel
--
(english) http://www.livejournal.com/~pavelmachek
(cesky, pictures) http://atrey.karlin.mff.cuni.cz/~pavel/picture/horses/blog.html
next prev parent reply other threads:[~2009-11-05 19:23 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2009-10-29 16:50 [GIT PULL] IOMMU updates for 2.6.32-rc5 Joerg Roedel
2009-10-29 16:50 ` [PATCH 1/4] x86/amd-iommu: Workaround for erratum 63 Joerg Roedel
2009-11-05 19:23 ` Pavel Machek [this message]
2009-10-29 16:50 ` [PATCH 2/4] x86/amd-iommu: Un__init function required on shutdown Joerg Roedel
2009-10-29 16:50 ` [PATCH 3/4] dma-debug: Fix compile warning with PAE enabled Joerg Roedel
2009-10-29 16:50 ` [PATCH 4/4] agp/amd64: Remove GART dependency on AGP_AMD64 Joerg Roedel
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