Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756076AbYCKDe1 (ORCPT ); Mon, 10 Mar 2008 23:34:27 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1754399AbYCKDeS (ORCPT ); Mon, 10 Mar 2008 23:34:18 -0400 Received: from smtp1.linux-foundation.org ([140.211.169.13]:43962 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751369AbYCKDeR (ORCPT ); Mon, 10 Mar 2008 23:34:17 -0400 Date: Mon, 10 Mar 2008 20:33:44 -0700 From: Andrew Morton To: FUJITA Tomonori Cc: linux-kernel@vger.kernel.org, linux-ia64@vger.kernel.org, tony.luck@intel.com, tomof@acm.org Subject: Re: [PATCH -mm] ia64: make IOMMU respect the segment boundary limits Message-Id: <20080310203344.acf50d71.akpm@linux-foundation.org> In-Reply-To: <20080310221538U.tomof@acm.org> References: <20080310221538U.tomof@acm.org> X-Mailer: Sylpheed 2.3.1 (GTK+ 2.10.11; x86_64-redhat-linux-gnu) Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1799 Lines: 50 On Mon, 10 Mar 2008 22:17:20 +0900 FUJITA Tomonori wrote: > This patch is another sequel to my patchset that fixes iommu segment > boundary problems, that is, IOMMUs allocate memory areas without > considering a low level driver's segment boundary limits: > > http://www.mail-archive.com/linux-scsi@vger.kernel.org/msg11919.html Please make this easier. afacit the patches to which you refer are already in mainline, so this is *not* a "-mm" patch. It is needed in mainline, correct? > This patchset fixes the IA64 IOMMU code. And if it fixes a bug then it is needed in 2.6.25. Is that correct? > This assumes that ioc->ibase is on iovp_size boundary. If not, please > let me know. I'll fix the patch. Who is the person who who knows the answer to this? Does this mean that the patch wasn't runtime tested? If so, how do you know there is a bug? > = > From: FUJITA Tomonori > Subject: [PATCH -mm] ia64: make IOMMU respect the segment boundary limits > > This makes IA64's IOMMU implementation not allocate a memory area > spanning LLD's segment boundary. This changelog doesn't actually tell us that this patch fixed a bug. It should tell us what the bug is, and how it fixed it, please. > Signed-off-by: FUJITA Tomonori > Cc: Tony Luck > Cc: Andrew Morton > --- > arch/ia64/Kconfig | 3 ++ > arch/ia64/hp/common/sba_iommu.c | 56 +++++++++++++++++++++++++++------------ -- 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/