From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758769AbZKETXR (ORCPT ); Thu, 5 Nov 2009 14:23:17 -0500 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1758713AbZKETXR (ORCPT ); Thu, 5 Nov 2009 14:23:17 -0500 Received: from atrey.karlin.mff.cuni.cz ([195.113.26.193]:34624 "EHLO atrey.karlin.mff.cuni.cz" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758355AbZKETXQ (ORCPT ); Thu, 5 Nov 2009 14:23:16 -0500 Date: Thu, 5 Nov 2009 20:23:15 +0100 From: Pavel Machek To: Joerg Roedel Cc: Ingo Molnar , 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 Message-ID: <20091105192315.GD1392@ucw.cz> References: <1256835012-31410-1-git-send-email-joerg.roedel@amd.com> <1256835012-31410-2-git-send-email-joerg.roedel@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1256835012-31410-2-git-send-email-joerg.roedel@amd.com> User-Agent: Mutt/1.5.18 (2008-05-17) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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