From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S932584Ab1JXNIF (ORCPT ); Mon, 24 Oct 2011 09:08:05 -0400 Received: from acsinet15.oracle.com ([141.146.126.227]:63336 "EHLO acsinet15.oracle.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932502Ab1JXNIB (ORCPT ); Mon, 24 Oct 2011 09:08:01 -0400 Date: Thu, 20 Oct 2011 19:44:59 -0400 From: Konrad Rzeszutek Wilk To: David Vrabel Cc: xen-devel@lists.xensource.com, linux-kernel@vger.kernel.org, Andrew Morton Subject: Re: [PATCH 0/4] xen: map foreign pages for shared rings by updating the PTEs directly Message-ID: <20111020234459.GF19558@phenom.dumpdata.com> References: <1319107519-2253-1-git-send-email-david.vrabel@citrix.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <1319107519-2253-1-git-send-email-david.vrabel@citrix.com> User-Agent: Mutt/1.5.21 (2010-09-15) X-Source-IP: acsinet22.oracle.com [141.146.126.238] X-Auth-Type: Internal IP X-CT-RefId: str=0001.0A090202.4EA56315.003F:SCFMA922111,ss=1,re=-4.000,fgs=0 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Thu, Oct 20, 2011 at 11:45:15AM +0100, David Vrabel wrote: > This series of patches allows the vmalloc_sync_all() to be removed > from alloc_vm_area() by getting the hypervisor to update the PTEs (in > init_mm) directly rather than having the hypervisor look in the > current page tables to find the PTEs. > > Once the hypervisor has updated the PTEs, the normal mechanism of > syncing the page tables after a fault works as expected. > > This mechanism doesn't currently work on the ia64 port as that does > not support the GNTMAP_contains_pte flag. > > Andrew, patch 4 (xen: map foreign pages for shared rings by updating > the PTEs directly) depends on patch 1 so it's probably best to go via > Konrad's Xen tree with your acked-by. Or I can Ack patch 1 and Andrew can pick both of them. Either way - but let mention the Ack on patch #1 > > David > > David Vrabel (4): > xen: use generic functions instead of xen_{alloc,free}_vm_area() > block: xen-blkback: use API provided by xenbus module to map rings > net: xen-netback: use API provided by xenbus module to map rings > xen: map foreign pages for shared rings by updating the PTEs directly > > arch/ia64/include/asm/xen/grant_table.h | 29 ----------- > arch/ia64/xen/grant-table.c | 62 ------------------------ > arch/x86/include/asm/xen/grant_table.h | 7 --- > arch/x86/xen/grant-table.c | 2 +- > drivers/block/xen-blkback/common.h | 5 +-- > drivers/block/xen-blkback/xenbus.c | 54 +++------------------ > drivers/net/xen-netback/common.h | 11 ++-- > drivers/net/xen-netback/netback.c | 80 +++++++------------------------ > drivers/xen/xenbus/xenbus_client.c | 15 ++++-- > include/linux/vmalloc.h | 2 +- > include/xen/grant_table.h | 1 - > mm/vmalloc.c | 27 +++++----- > 12 files changed, 55 insertions(+), 240 deletions(-) > delete mode 100644 arch/ia64/include/asm/xen/grant_table.h > delete mode 100644 arch/x86/include/asm/xen/grant_table.h > > -- > 1.7.2.5