From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1757728Ab1K3LlF (ORCPT ); Wed, 30 Nov 2011 06:41:05 -0500 Received: from smtp.eu.citrix.com ([62.200.22.115]:15077 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752807Ab1K3LlD (ORCPT ); Wed, 30 Nov 2011 06:41:03 -0500 X-IronPort-AV: E=Sophos;i="4.69,596,1315180800"; d="scan'208";a="9204133" Date: Wed, 30 Nov 2011 11:41:58 +0000 From: Stefano Stabellini X-X-Sender: sstabellini@kaball-desktop To: Anup Patel CC: Arnd Bergmann , "linux-arm-kernel@lists.infradead.org" , Stefano Stabellini , "xen-devel@lists.xensource.com" , "linaro-dev@lists.linaro.org" , "kvm@vger.kernel.org" , "linux-kernel@vger.kernel.org" , "virtualization@lists.linux-foundation.org" , "android-virt@lists.cs.columbia.edu" , "embeddedxen-devel@lists.sourceforge.net" Subject: Re: [ANNOUNCE] Xen port to Cortex-A15 / ARMv7 with virt extensions In-Reply-To: Message-ID: References: <201111292129.20444.arnd@arndb.de> User-Agent: Alpine 2.00 (DEB 1167 2008-08-23) MIME-Version: 1.0 Content-Type: text/plain; charset="US-ASCII" Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Wed, 30 Nov 2011, Anup Patel wrote: > Hi all, > > I wanted to know how Xen-ARM for A15 will address following concerns: > > - How will Xen-ARM for A15 support legacy guest environment like ARMv5 or ARMv6 ? It is not our focus at the moment; we are targeting operating systems that support a modern ARMv7 machine with GIC support. That said, it might be possible to run legacy guests in the future, introducing more emulation to the hypervisor. > - What if my Cortex-A15 board does not have a GIC with virtualization support ? We expect most hardware vendors to provide a GIC with virtualization support. However if they do not, in order to support their boards we'll have to do more emulation in the hypervisor.