Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932469Ab3DBOur (ORCPT ); Tue, 2 Apr 2013 10:50:47 -0400 Received: from 8bytes.org ([85.214.48.195]:53778 "EHLO mail.8bytes.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1761234Ab3DBOup (ORCPT ); Tue, 2 Apr 2013 10:50:45 -0400 Date: Tue, 2 Apr 2013 16:50:42 +0200 From: Joerg Roedel To: suravee.suthikulpanit@amd.com Cc: iommu@lists.linux-foundation.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 3/3] iommu/amd: Re-enable IOMMU event log interrupt after handling. Message-ID: <20130402145041.GD15687@8bytes.org> References: <1364428312-2611-1-git-send-email-suravee.suthikulpanit@amd.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1364428312-2611-1-git-send-email-suravee.suthikulpanit@amd.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-DSPAM-Result: Whitelisted X-DSPAM-Processed: Tue Apr 2 16:50:44 2013 X-DSPAM-Confidence: 0.9990 X-DSPAM-Probability: 0.0000 X-DSPAM-Signature: 515af04423671361714805 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 858 Lines: 20 On Wed, Mar 27, 2013 at 06:51:52PM -0500, suravee.suthikulpanit@amd.com wrote: > From: Suravee Suthikulpanit > > Current driver does not clear the IOMMU event log interrupt bit > in the IOMMU status register after processing an interrupt. > This causes the IOMMU hardware to generate event log interrupt only once. > This has been observed in both IOMMU v1 and V2 hardware. > This patch clears the bit by writing 1 to bit 1 of the IOMMU > status register (MMIO Offset 2020h) > > Signed-off-by: Suravee Suthikulpanit Applied to x86/amd, thanks. -- 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/