Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1761557Ab3DBQEF (ORCPT ); Tue, 2 Apr 2013 12:04:05 -0400 Received: from 8bytes.org ([85.214.48.195]:54001 "EHLO mail.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761529Ab3DBQEE (ORCPT ); Tue, 2 Apr 2013 12:04:04 -0400 Date: Tue, 2 Apr 2013 18:04:00 +0200 From: Joerg Roedel To: Borislav Petkov , suravee.suthikulpanit@amd.com, iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 1/3] iommu/amd: Add logic to decode AMD IOMMU event flag Message-ID: <20130402160400.GP30540@8bytes.org> References: <1364428283-2548-1-git-send-email-suravee.suthikulpanit@amd.com> <20130402143335.GB15687@8bytes.org> <20130402144037.GE5488@pd.tnic> <20130402150302.GF15687@8bytes.org> <20130402152956.GE4391@pd.tnic> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20130402152956.GE4391@pd.tnic> User-Agent: Mutt/1.5.21 (2010-09-15) X-DSPAM-Result: Whitelisted X-DSPAM-Processed: Tue Apr 2 18:04:01 2013 X-DSPAM-Confidence: 0.9983 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 515b017123678656392098 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 922 Lines: 27 On Tue, Apr 02, 2013 at 05:29:56PM +0200, Borislav Petkov wrote: > On Tue, Apr 02, 2013 at 05:03:04PM +0200, Joerg Roedel wrote: > Good luck trying to get ASUS to fix anything in their BIOS :(. Hmm... > Can't we detect the SB IOAPIC some other way in this case? I can certainly write a patch that works around your particular BIOS bug. The problem is that such a fix will most certainly break other systems. Unfortunatly there is no reliable way to fixup the IO-APIC-ID->DEVID mapping at runtime when the BIOS messed it up. The only thing I can do is to check for potential problems and disable the intremap feature then, so that the system will at least boot. Joerg -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/