Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752438Ab3F1TXX (ORCPT ); Fri, 28 Jun 2013 15:23:23 -0400 Received: from 8bytes.org ([85.214.48.195]:47351 "EHLO mail.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751067Ab3F1TXW (ORCPT ); Fri, 28 Jun 2013 15:23:22 -0400 Date: Fri, 28 Jun 2013 21:23:19 +0200 From: Joerg Roedel To: Andreas Hartmann , Alex Williamson Cc: LKML Subject: Re: [ 102/127] iommu/amd: Workaround for ERBT1312 Message-ID: <20130628192319.GV11309@8bytes.org> References: <20130628181136.52d00e9c@dualc.maya.org> <20130628182533.GT11309@8bytes.org> <51CDD8FD.808@01019freenet.de> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <51CDD8FD.808@01019freenet.de> User-Agent: Mutt/1.5.21 (2010-09-15) X-DSPAM-Result: Whitelisted X-DSPAM-Processed: Fri Jun 28 21:23:20 2013 X-DSPAM-Confidence: 0.9988 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 51cde2a820862074613982 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1508 Lines: 39 Alex, Andreas, On Fri, Jun 28, 2013 at 08:42:05PM +0200, Andreas Hartmann wrote: > You're right, there is exactly one entry directly after loading of vfio. > I can see this message, too, with linux 3.4.43. Can you please test this patch? It should reduce the noise significantly, but a few of those error messages are still expected. diff --git a/drivers/iommu/amd_iommu_init.c b/drivers/iommu/amd_iommu_init.c index e3c2d74..74e1d1c 100644 --- a/drivers/iommu/amd_iommu_init.c +++ b/drivers/iommu/amd_iommu_init.c @@ -1431,6 +1431,7 @@ static void init_device_table_dma(void) for (devid = 0; devid <= amd_iommu_last_bdf; ++devid) { set_dev_entry_bit(devid, DEV_ENTRY_VALID); set_dev_entry_bit(devid, DEV_ENTRY_TRANSLATION); + set_dev_entry_bit(devid, DEV_ENTRY_ONE_FAULT); } } diff --git a/drivers/iommu/amd_iommu_types.h b/drivers/iommu/amd_iommu_types.h index 083f98c..4872b68 100644 --- a/drivers/iommu/amd_iommu_types.h +++ b/drivers/iommu/amd_iommu_types.h @@ -173,6 +173,7 @@ #define DEV_ENTRY_TRANSLATION 0x01 #define DEV_ENTRY_IR 0x3d #define DEV_ENTRY_IW 0x3e +#define DEV_ENTRY_ONE_FAULT 0x61 #define DEV_ENTRY_NO_PAGE_FAULT 0x62 #define DEV_ENTRY_EX 0x67 #define DEV_ENTRY_SYSMGT1 0x68 -- 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/