From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752577Ab2GZRUl (ORCPT ); Thu, 26 Jul 2012 13:20:41 -0400 Received: from smtp.eu.citrix.com ([62.200.22.115]:32391 "EHLO SMTP.EU.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752362Ab2GZRUk (ORCPT ); Thu, 26 Jul 2012 13:20:40 -0400 X-IronPort-AV: E=Sophos;i="4.77,660,1336348800"; d="scan'208";a="13721023" Date: Thu, 26 Jul 2012 18:19:46 +0100 From: Stefano Stabellini X-X-Sender: sstabellini@kaball.uk.xensource.com To: David Vrabel CC: Stefano Stabellini , "linux-kernel@vger.kernel.org" , "xen-devel@lists.xensource.com" , "linaro-dev@lists.linaro.org" , Ian Campbell , "arnd@arndb.de" , "konrad.wilk@oracle.com" , "catalin.marinas@arm.com" , "Tim (Xen.org)" , "linux-arm-kernel@lists.infradead.org" Subject: Re: [Xen-devel] [PATCH 02/24] xen/arm: hypercalls In-Reply-To: <501176AF.3000607@cantab.net> Message-ID: References: <1343316846-25860-2-git-send-email-stefano.stabellini@eu.citrix.com> <501176AF.3000607@cantab.net> User-Agent: Alpine 2.02 (DEB 1266 2009-07-14) 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 Thu, 26 Jul 2012, David Vrabel wrote: > On 26/07/12 16:33, Stefano Stabellini wrote: > > > > + * The hvc ISS is required to be 0xEA1, that is the Xen specific ARM > > + * hypercall tag. > > Is this number, 0xea1, assigned to Xen by some external body? I am not aware of any "external body" that could assign us such a number but it is specified in the Xen hypercall calling convention, documented here: http://xenbits.xensource.com/hg/xen-unstable.hg/file/663eb766cdde/xen/include/public/arch-arm.h