Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758364AbbGQOqm (ORCPT ); Fri, 17 Jul 2015 10:46:42 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:24614 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758065AbbGQOqk (ORCPT ); Fri, 17 Jul 2015 10:46:40 -0400 X-IronPort-AV: E=Sophos;i="5.15,497,1432598400"; d="scan'208";a="285128297" Date: Fri, 17 Jul 2015 15:45:34 +0100 From: Stefano Stabellini X-X-Sender: sstabellini@kaball.uk.xensource.com To: Julien Grall CC: Stefano Stabellini , "Konrad Rzeszutek Wilk" , , , David Vrabel , , Boris Ostrovsky , Subject: Re: [Xen-devel] [PATCH v2 09/20] xen/biomerge: Don't allow biovec to be merge when Linux is not using 4KB page In-Reply-To: <55A914D5.7080900@citrix.com> Message-ID: References: <1436474552-31789-1-git-send-email-julien.grall@citrix.com> <1436474552-31789-10-git-send-email-julien.grall@citrix.com> <20150710191245.GA31063@l.oracle.com> <55A7D8AD.1090102@citrix.com> <55A914D5.7080900@citrix.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" X-DLP: MIA2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 895 Lines: 18 On Fri, 17 Jul 2015, Julien Grall wrote: > On 17/07/15 14:20, Stefano Stabellini wrote: > > We would have to run some benchmarks, but I think it would still be a > > win. We should write an ad-hoc __pfn_to_mfn translation function that > > operates on a range of pfns and simply checks whether an entry is > > present in that range. It should be just as fast as __pfn_to_mfn. I > > would definitely recommend it. > > I'd like to see a basic support of 64KB support on Xen pushed in Linux > upstream before looking to possible improvement in the code. Can we > defer this as the follow-up of this series? Yes, maybe add a TODO comment in the code. -- 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/