From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752482AbbJFN6s (ORCPT ); Tue, 6 Oct 2015 09:58:48 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:47438 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751382AbbJFN6r (ORCPT ); Tue, 6 Oct 2015 09:58:47 -0400 X-IronPort-AV: E=Sophos;i="5.17,644,1437436800"; d="scan'208";a="308387651" Date: Tue, 6 Oct 2015 14:55:57 +0100 From: Stefano Stabellini X-X-Sender: sstabellini@kaball.uk.xensource.com To: =?UTF-8?Q?Roger_Pau_Monn=C3=A9?= CC: Ian Campbell , Stefano Stabellini , Julien Grall , , , , , , , Subject: Re: [PATCH v4 00/20] xen/arm64: Add support for 64KB page in Linux In-Reply-To: <56139428.4050402@citrix.com> Message-ID: References: <1441640038-23615-1-git-send-email-julien.grall@citrix.com> <55F68BC9.6020509@citrix.com> <55F6A437.3040403@citrix.com> <55F6A9DB.8040503@citrix.com> <55F6ADAE.1010609@citrix.com> <55F6B8CC.5090406@citrix.com> <55F6C1D2.7010206@citrix.com> <55F6D9DC.8060607@citrix.com> <55F6E658.4070908@citrix.com> <1442919576.10338.146.camel@citrix.com> <56139428.4050402@citrix.com> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) MIME-Version: 1.0 Content-Type: multipart/mixed; boundary="1342847746-2043058183-1444139540=:1179" Content-ID: X-DLP: MIA2 Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --1342847746-2043058183-1444139540=:1179 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 8BIT Content-ID: On Tue, 6 Oct 2015, Roger Pau Monné wrote: > Do KVM guests also need such extensive set of modifications in order to > run using 64KB pages? I know it's not fair to compare KVM and Xen in > this regard, because the interfaces are very different, but that's what > developers are going to look at. QEMU doesn't need extensive modifications to run 64K guests on a 4K host, but on the other hand KVM needs its own set of non-trivial modifications to do it. --1342847746-2043058183-1444139540=:1179-- From mboxrd@z Thu Jan 1 00:00:00 1970 From: stefano.stabellini@eu.citrix.com (Stefano Stabellini) Date: Tue, 6 Oct 2015 14:55:57 +0100 Subject: [PATCH v4 00/20] xen/arm64: Add support for 64KB page in Linux In-Reply-To: <56139428.4050402@citrix.com> References: <1441640038-23615-1-git-send-email-julien.grall@citrix.com> <55F68BC9.6020509@citrix.com> <55F6A437.3040403@citrix.com> <55F6A9DB.8040503@citrix.com> <55F6ADAE.1010609@citrix.com> <55F6B8CC.5090406@citrix.com> <55F6C1D2.7010206@citrix.com> <55F6D9DC.8060607@citrix.com> <55F6E658.4070908@citrix.com> <1442919576.10338.146.camel@citrix.com> <56139428.4050402@citrix.com> Message-ID: To: linux-arm-kernel@lists.infradead.org List-Id: linux-arm-kernel.lists.infradead.org On Tue, 6 Oct 2015, Roger Pau Monn? wrote: > Do KVM guests also need such extensive set of modifications in order to > run using 64KB pages? I know it's not fair to compare KVM and Xen in > this regard, because the interfaces are very different, but that's what > developers are going to look at. QEMU doesn't need extensive modifications to run 64K guests on a 4K host, but on the other hand KVM needs its own set of non-trivial modifications to do it.