From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail143.messagelabs.com (mail143.messagelabs.com [216.82.254.35]) by kanga.kvack.org (Postfix) with SMTP id 057CF5F0001 for ; Thu, 16 Apr 2009 07:39:03 -0400 (EDT) Date: Thu, 16 Apr 2009 13:39:31 +0200 From: Andrea Arcangeli Subject: Re: [PATCH 4/4] add ksm kernel shared memory driver. Message-ID: <20090416113931.GF4524@random.random> References: <1239249521-5013-1-git-send-email-ieidus@redhat.com> <1239249521-5013-2-git-send-email-ieidus@redhat.com> <1239249521-5013-3-git-send-email-ieidus@redhat.com> <1239249521-5013-4-git-send-email-ieidus@redhat.com> <1239249521-5013-5-git-send-email-ieidus@redhat.com> <20090414150929.174a9b25.akpm@linux-foundation.org> <49E67F17.1070805@goop.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <49E67F17.1070805@goop.org> Sender: owner-linux-mm@kvack.org To: Jeremy Fitzhardinge Cc: Andrew Morton , Izik Eidus , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, linux-mm@kvack.org, avi@redhat.com, chrisw@redhat.com, mtosatti@redhat.com, hugh@veritas.com, kamezawa.hiroyu@jp.fujitsu.com List-ID: On Wed, Apr 15, 2009 at 05:43:03PM -0700, Jeremy Fitzhardinge wrote: > Shouldn't that be kmap_atomic's job anyway? Otherwise it would be hard to No because those are full noops in no-highmem kernels. I commented in other email why I think it's safe thanks to the wrprotect + smp tlb flush of the userland PTE. -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org