From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from mail172.messagelabs.com (mail172.messagelabs.com [216.82.254.3]) by kanga.kvack.org (Postfix) with ESMTP id 222846B005C for ; Thu, 2 Apr 2009 15:27:35 -0400 (EDT) Date: Thu, 2 Apr 2009 20:27:21 +0100 (BST) From: Hugh Dickins Subject: Re: [patch 0/6] Guest page hinting version 7. In-Reply-To: <20090402175249.3c4a6d59@skybase> Message-ID: References: <20090327150905.819861420@de.ibm.com> <200903281705.29798.rusty@rustcorp.com.au> <20090329162336.7c0700e9@skybase> <200904022232.02185.nickpiggin@yahoo.com.au> <20090402175249.3c4a6d59@skybase> MIME-Version: 1.0 Content-Type: TEXT/PLAIN; charset=US-ASCII Sender: owner-linux-mm@kvack.org To: Martin Schwidefsky Cc: Nick Piggin , Rusty Russell , virtualization@lists.linux-foundation.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, virtualization@lists.osdl.org, akpm@osdl.org, frankeh@watson.ibm.com, riel@redhat.com List-ID: On Thu, 2 Apr 2009, Martin Schwidefsky wrote: > On Thu, 2 Apr 2009 22:32:00 +1100 > Nick Piggin wrote: > > > I still think this needs much more justification. > > Ok, I can understand that. We probably need a KVM based version to show > that benefits exist on non-s390 hardware as well. That would indeed help your cause enormously (I think I made the same point last time). All these complex transitions, added to benefit only an architecture to which few developers have access, asks for trouble - we mm hackers already get caught out often enough by your too-well-camouflaged page_test_dirty(). Hugh -- 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