From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752907Ab2GZP4k (ORCPT ); Thu, 26 Jul 2012 11:56:40 -0400 Received: from smtp.citrix.com ([66.165.176.89]:38108 "EHLO SMTP.CITRIX.COM" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752755Ab2GZP4i (ORCPT ); Thu, 26 Jul 2012 11:56:38 -0400 X-IronPort-AV: E=Sophos;i="4.77,659,1336363200"; d="scan'208";a="32691171" From: Stefano Stabellini To: CC: , , , , , , , , , Stefano Stabellini Subject: [PATCH 13/24] xen/arm: get privilege status Date: Thu, 26 Jul 2012 16:33:55 +0100 Message-ID: <1343316846-25860-13-git-send-email-stefano.stabellini@eu.citrix.com> X-Mailer: git-send-email 1.7.9.5 In-Reply-To: References: 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. XENFEAT_dom0 was introduced by 23735 in xen-unstable.hg. Signed-off-by: Stefano Stabellini --- arch/arm/xen/enlighten.c | 7 +++++++ include/xen/interface/features.h | 3 +++ 2 files changed, 10 insertions(+), 0 deletions(-) diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index dc68074..2e013cf 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -2,6 +2,7 @@ #include #include #include +#include #include #include #include @@ -58,6 +59,12 @@ int __init xen_guest_init(void) } xen_domain_type = XEN_HVM_DOMAIN; + 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 0; 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