From patchwork Mon Aug 6 14:27:17 2012 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stefano Stabellini X-Patchwork-Id: 1279981 Return-Path: X-Original-To: patchwork-linux-arm@patchwork.kernel.org Delivered-To: patchwork-process-083081@patchwork1.kernel.org Received: from merlin.infradead.org (merlin.infradead.org [205.233.59.134]) by patchwork1.kernel.org (Postfix) with ESMTP id 5AB0A3FD57 for ; Mon, 6 Aug 2012 15:00:01 +0000 (UTC) Received: from localhost ([::1] helo=merlin.infradead.org) by merlin.infradead.org with esmtp (Exim 4.76 #1 (Red Hat Linux)) id 1SyOjb-00024d-Ob; Mon, 06 Aug 2012 14:56:46 +0000 Received: from smtp.citrix.com ([66.165.176.89]) by merlin.infradead.org with esmtps (Exim 4.76 #1 (Red Hat Linux)) id 1SyOjA-0001uc-57 for linux-arm-kernel@lists.infradead.org; Mon, 06 Aug 2012 14:56:16 +0000 X-IronPort-AV: E=Sophos;i="4.77,720,1336363200"; d="scan'208";a="33702087" Received: from ftlpmailmx02.citrite.net ([10.13.107.66]) by FTLPIPO01.CITRIX.COM with ESMTP/TLS/RC4-MD5; 06 Aug 2012 10:56:15 -0400 Received: from ukmail1.uk.xensource.com (10.80.16.128) by smtprelay.citrix.com (10.13.107.66) with Microsoft SMTP Server id 8.3.213.0; Mon, 6 Aug 2012 10:56:15 -0400 Received: from kaball.uk.xensource.com ([10.80.2.59]) by ukmail1.uk.xensource.com with esmtp (Exim 4.69) (envelope-from ) id 1SyOHO-0002zY-CX; Mon, 06 Aug 2012 15:27:34 +0100 From: Stefano Stabellini To: Subject: [PATCH v2 14/23] xen/arm: initialize grant_table on ARM Date: Mon, 6 Aug 2012 15:27:17 +0100 Message-ID: <1344263246-28036-14-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: -6.9 (------) X-Spam-Report: SpamAssassin version 3.3.2 on merlin.infradead.org summary: Content analysis details: (-6.9 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [66.165.176.89 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 T_RP_MATCHES_RCVD Envelope sender domain matches handover relay domain -0.0 SPF_PASS SPF: sender matches SPF record -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, arnd@arndb.de, konrad.wilk@oracle.com, catalin.marinas@arm.com, Stefano Stabellini , tim@xen.org, 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 Initialize the grant table mapping at the address specified at index 0 in the DT under the /xen node. After the grant table is initialized, call xenbus_probe (if not dom0). Changes in v2: - introduce GRANT_TABLE_PHYSADDR; - remove unneeded initialization of boot_max_nr_grant_frames. Signed-off-by: Stefano Stabellini --- arch/arm/xen/enlighten.c | 15 +++++++++++++++ 1 files changed, 15 insertions(+), 0 deletions(-) diff --git a/arch/arm/xen/enlighten.c b/arch/arm/xen/enlighten.c index ac3a2d6..e5e92d5 100644 --- a/arch/arm/xen/enlighten.c +++ b/arch/arm/xen/enlighten.c @@ -1,8 +1,12 @@ #include +#include +#include #include #include +#include #include #include +#include #include #include #include @@ -45,17 +49,23 @@ EXPORT_SYMBOL_GPL(xen_remap_domain_mfn_range); * - one interrupt for Xen event notifications; * - one memory region to map the grant_table. */ + +#define GRANT_TABLE_PHYSADDR 0 static int __init xen_guest_init(void) { struct xen_add_to_physmap xatp; static struct shared_info *shared_info_page = 0; struct device_node *node; + struct resource res; node = of_find_compatible_node(NULL, NULL, "arm,xen"); if (!node) { pr_debug("No Xen support\n"); return 0; } + if (of_address_to_resource(node, GRANT_TABLE_PHYSADDR, &res)) + return 0; + xen_hvm_resume_frames = res.start >> PAGE_SHIFT; xen_domain_type = XEN_HVM_DOMAIN; xen_setup_features(); @@ -89,6 +99,11 @@ static int __init xen_guest_init(void) * is required to use VCPUOP_register_vcpu_info to place vcpu info * for secondary CPUs as they are brought up. */ per_cpu(xen_vcpu, 0) = &HYPERVISOR_shared_info->vcpu_info[0]; + + gnttab_init(); + if (!xen_initial_domain()) + xenbus_probe(NULL); + return 0; } core_initcall(xen_guest_init);