From patchwork Fri Sep 14 11:13:15 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 1457711 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (unknown [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id B2CA2402E1 for ; Fri, 14 Sep 2012 11:54:30 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1TCUIA-0005rK-Gw; Fri, 14 Sep 2012 11:42:39 +0000 Received: from smtp02.citrix.com ([66.165.176.63]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1TCUH4-0005aN-Dw for linux-arm-kernel@lists.infradead.org; Fri, 14 Sep 2012 11:41:31 +0000 X-IronPort-AV: E=Sophos;i="4.80,422,1344211200"; d="scan'208";a="208102967" Received: from ftlpmailmx01.citrite.net ([10.13.107.65]) by FTLPIPO02.CITRIX.COM with ESMTP/TLS/RC4-MD5; 14 Sep 2012 11:41:30 +0000 Received: from ukmail1.uk.xensource.com (10.80.16.128) by smtprelay.citrix.com (10.13.107.65) with Microsoft SMTP Server id 8.3.279.1; Fri, 14 Sep 2012 07:41:29 -0400 Received: from kaball.uk.xensource.com ([10.80.2.59]) by ukmail1.uk.xensource.com with esmtp (Exim 4.69) (envelope-from ) id 1TCTqN-0005wt-Gr; Fri, 14 Sep 2012 12:13:55 +0100 From: Stefano Stabellini To: Subject: [PATCH v4 13/24] xen/arm: get privilege status Date: Fri, 14 Sep 2012 12:13:15 +0100 Message-ID: <1347621207-11294-13-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 X-Spam-Note: CRM114 invocation failed X-Spam-Score: -3.1 (---) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-3.1 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at http://www.dnswl.org/, low trust [66.165.176.63 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.5 RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -1.9 BAYES_00 BODY: Bayes spam probability is 0 to 1% [score: 0.0000] Cc: xen-devel@lists.xensource.com, linaro-dev@lists.linaro.org, Ian.Campbell@citrix.com, konrad.wilk@oracle.com, catalin.marinas@arm.com, Stefano Stabellini , tim@xen.org, linux-kernel@vger.kernel.org, linux@arm.linux.org.uk, linux-arm-kernel@lists.infradead.org X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.14 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: linux-arm-kernel-bounces@lists.infradead.org Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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 Acked-by: Konrad Rzeszutek Wilk --- 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 6a0217d..c2a47a7 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -1,6 +1,7 @@ #include #include #include +#include #include #include #include @@ -66,6 +67,12 @@ static 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); + if (!shared_info_page) shared_info_page = (struct shared_info *) get_zeroed_page(GFP_KERNEL); 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__ */