Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1758555AbbGQOrM (ORCPT ); Fri, 17 Jul 2015 10:47:12 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:60149 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1758376AbbGQOrJ (ORCPT ); Fri, 17 Jul 2015 10:47:09 -0400 X-IronPort-AV: E=Sophos;i="5.15,497,1432598400"; d="scan'208";a="285128403" Message-ID: <55A9153D.3060205@citrix.com> Date: Fri, 17 Jul 2015 15:46:21 +0100 From: Julien Grall User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:31.0) Gecko/20100101 Icedove/31.7.0 MIME-Version: 1.0 To: Stefano Stabellini CC: 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 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> In-Reply-To: Content-Type: text/plain; charset="windows-1252" Content-Transfer-Encoding: 7bit X-DLP: MIA1 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 988 Lines: 26 On 17/07/15 15:45, Stefano Stabellini wrote: > 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. Will do. Regards, -- Julien Grall -- 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/