Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756977Ab0DBAbs (ORCPT ); Thu, 1 Apr 2010 20:31:48 -0400 Received: from sous-sol.org ([216.99.217.87]:36998 "EHLO sequoia.sous-sol.org" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1751565Ab0DBAbp (ORCPT ); Thu, 1 Apr 2010 20:31:45 -0400 Date: Thu, 1 Apr 2010 17:30:34 -0700 From: Chris Wright To: Neil Horman Cc: Joerg Roedel , Neil Horman , kexec@lists.infradead.org, linux-kernel@vger.kernel.org, hbabu@us.ibm.com, iommu@lists.linux-foundation.org, "Eric W. Biederman" , Vivek Goyal Subject: Re: [PATCH] amd iommu: force flush of iommu prior during shutdown Message-ID: <20100402003034.GX29241@sequoia.sous-sol.org> References: <20100331191811.GD13406@hmsreliant.think-freely.org> <20100331202745.GE13406@hmsreliant.think-freely.org> <20100401142902.GF24846@8bytes.org> <20100401144736.GA14069@shamino.rdu.redhat.com> <20100401155643.GG24846@8bytes.org> <20100401171149.GH13603@shamino.rdu.redhat.com> <20100401201433.GK24846@8bytes.org> <20100402000012.GA8930@hmsreliant.think-freely.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20100402000012.GA8930@hmsreliant.think-freely.org> User-Agent: Mutt/1.5.19 (2009-01-05) Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1093 Lines: 28 * Neil Horman (nhorman@tuxdriver.com) wrote: > On Thu, Apr 01, 2010 at 10:14:34PM +0200, Joerg Roedel wrote: > > On Thu, Apr 01, 2010 at 01:11:49PM -0400, Neil Horman wrote: > > > On Thu, Apr 01, 2010 at 05:56:43PM +0200, Joerg Roedel wrote: > > > > > > The possible fix will be to enable the hardware earlier in the > > > > initialization path. > > > > > > > That sounds like a reasonable theory, I'll try hack something together > > > shortly. > > > > Great. So the problem might be already fixed when I am back in the > > office ;-) > > > Don't hold your breath, but I'll try my best :) The problem we had before was a combo of not clearing PDE and not having the command buffer set up properly. Now we have basically the same problem. The attach is running too early, so the invalidate commands are falling on deaf ears. thanks, -chris -- 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/