From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756830AbZEKNF3 (ORCPT ); Mon, 11 May 2009 09:05:29 -0400 Received: (majordomo@vger.kernel.org) by vger.kernel.org id S1753245AbZEKNFS (ORCPT ); Mon, 11 May 2009 09:05:18 -0400 Received: from mx2.mail.elte.hu ([157.181.151.9]:57679 "EHLO mx2.mail.elte.hu" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752433AbZEKNFR (ORCPT ); Mon, 11 May 2009 09:05:17 -0400 Date: Mon, 11 May 2009 15:04:55 +0200 From: Ingo Molnar To: Jeremy Fitzhardinge Cc: FUJITA Tomonori , the arch/x86 maintainers , Linux Kernel Mailing List , Xen-devel Subject: Re: [GIT PULL] xen: swiotlb support for Xen dom0 Message-ID: <20090511130455.GO13954@elte.hu> References: <1241741842-7966-1-git-send-email-jeremy@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1241741842-7966-1-git-send-email-jeremy@goop.org> User-Agent: Mutt/1.5.18 (2008-05-17) X-ELTE-VirusStatus: clean X-ELTE-SpamScore: -1.5 X-ELTE-SpamLevel: X-ELTE-SpamCheck: no X-ELTE-SpamVersion: ELTE 2.0 X-ELTE-SpamCheck-Details: score=-1.5 required=5.9 tests=BAYES_00 autolearn=no SpamAssassin version=3.2.3 -1.5 BAYES_00 BODY: Bayesian spam probability is 0 to 1% [score: 0.0000] Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org * Jeremy Fitzhardinge wrote: > Hi Ingo, > > This branch adds the swiotlb hooks for Xen dom0. We use swiotlb > to handle various device drivers which assume that multipage DMA > transfers which are contigious in kernel memory are also > contigious in machine memory (mostly lower-performance devices, as > high-performance ones already do a good job of scatter-gather). > > Following Fujita's suggestion, these changes remove a lot of the > placeholder stubs in arch/x86/kernel/pci-swiotlb.c and moves them > into the Xen-specific arch/x86/xen/pci-swiotlb.c. (It still > relies on overriding the weak functions defined in lib/swiotlb.c.) > > The following changes since commit 2af252ab26150b4411889c9eaf1af4c5bf03de78: > Jeremy Fitzhardinge (1): > xen: checkpatch cleanups Would be nice to have a pull request for this with Fujita-san's acks embedded in the commits, and with a tree based against tip:x86/xen. Ingo