From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1762619Ab2FVQPN (ORCPT ); Fri, 22 Jun 2012 12:15:13 -0400 Received: from smtp02.citrix.com ([66.165.176.63]:57722 "EHLO SMTP02.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1762508Ab2FVQPI (ORCPT ); Fri, 22 Jun 2012 12:15:08 -0400 X-IronPort-AV: E=Sophos;i="4.77,459,1336363200"; d="scan'208";a="199722609" From: Stefano Stabellini To: CC: , , , , Stefano Stabellini Subject: [PATCH WIP 3/6] xen/arm: get privilege status Date: Fri, 22 Jun 2012 17:14:42 +0100 Message-ID: <1340381685-22529-3-git-send-email-stefano.stabellini@eu.citrix.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: <1340381685-22529-1-git-send-email-stefano.stabellini@eu.citrix.com> References: <1340381685-22529-1-git-send-email-stefano.stabellini@eu.citrix.com> MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Use Xen features to figure out if we are privileged. Signed-off-by: Stefano Stabellini --- arch/arm/xen/enlighten.c | 9 ++++++++- include/xen/interface/features.h | 3 +++ 2 files changed, 11 insertions(+), 1 deletions(-) diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index e1c2e4d..ddacecf 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -3,6 +3,7 @@ #include #include #include +#include #include @@ -11,7 +12,7 @@ #include -struct start_info _xen_start_info = { .flags = (SIF_INITDOMAIN|SIF_PRIVILEGED) }; +struct start_info _xen_start_info; struct start_info *xen_start_info = &_xen_start_info; EXPORT_SYMBOL_GPL(xen_start_info); @@ -133,6 +134,12 @@ static void __init xen_hvm_init_shared_info(void) struct xen_add_to_physmap xatp; static struct shared_info *shared_info_page = 0; + xen_setup_features(); + if (xen_feature(XENFEAT_dom0)) + xen_start_info->flags |= SIF_INITDOMAIN|SIF_PRIVILEGED; + else + xen_start_info->flags &= ~(SIF_INITDOMAIN|SIF_PRIVILEGED); + /* already setup */ if (shared_info_page != 0 && HYPERVISOR_shared_info == shared_info_page) return; diff --git a/include/xen/interface/features.h b/include/xen/interface/features.h index b6ca39a..131a6cc 100644 --- a/include/xen/interface/features.h +++ b/include/xen/interface/features.h @@ -50,6 +50,9 @@ /* x86: pirq can be used by HVM guests */ #define XENFEAT_hvm_pirqs 10 +/* operation as Dom0 is supported */ +#define XENFEAT_dom0 11 + #define XENFEAT_NR_SUBMAPS 1 #endif /* __XEN_PUBLIC_FEATURES_H__ */ -- 1.7.2.5