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[50.57.142.19]) by mx.google.com with ESMTPS id kx5si12624839igb.41.2014.05.28.06.35.01 for (version=TLSv1 cipher=RC4-SHA bits=128/128); Wed, 28 May 2014 06:35:02 -0700 (PDT) Received-SPF: none (google.com: xen-devel-bounces@lists.xen.org does not designate permitted sender hosts) client-ip=50.57.142.19; Received: from localhost ([127.0.0.1] helo=lists.xen.org) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Wpdyi-0004dg-E5; Wed, 28 May 2014 13:33:12 +0000 Received: from mail6.bemta14.messagelabs.com ([193.109.254.103]) by lists.xen.org with esmtp (Exim 4.72) (envelope-from ) id 1Wpdyg-0004d5-8Z for xen-devel@lists.xenproject.org; Wed, 28 May 2014 13:33:10 +0000 Received: from [193.109.254.147:63098] by server-9.bemta-14.messagelabs.com id A2/DB-03644-595E5835; Wed, 28 May 2014 13:33:09 +0000 X-Env-Sender: julien.grall@linaro.org X-Msg-Ref: server-6.tower-27.messagelabs.com!1401283988!7636020!1 X-Originating-IP: [74.125.82.51] X-SpamReason: No, hits=0.0 required=7.0 tests= X-StarScan-Received: X-StarScan-Version: 6.11.3; banners=-,-,- X-VirusChecked: Checked Received: (qmail 2960 invoked from network); 28 May 2014 13:33:09 -0000 Received: from mail-wg0-f51.google.com (HELO mail-wg0-f51.google.com) (74.125.82.51) by server-6.tower-27.messagelabs.com with RC4-SHA encrypted SMTP; 28 May 2014 13:33:09 -0000 Received: by mail-wg0-f51.google.com with SMTP id x13so11208306wgg.22 for ; Wed, 28 May 2014 06:33:08 -0700 (PDT) X-Received: by 10.180.78.71 with SMTP id z7mr1090916wiw.14.1401283988821; Wed, 28 May 2014 06:33:08 -0700 (PDT) Received: from belegaer.uk.xensource.com ([185.25.64.249]) by mx.google.com with ESMTPSA id u1sm16943227wia.16.2014.05.28.06.33.07 for (version=TLSv1.2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Wed, 28 May 2014 06:33:08 -0700 (PDT) From: Julien Grall To: xen-devel@lists.xenproject.org Date: Wed, 28 May 2014 14:33:03 +0100 Message-Id: <1401283983-19843-1-git-send-email-julien.grall@linaro.org> X-Mailer: git-send-email 1.7.10.4 Cc: stefano.stabellini@citrix.com, Julien Grall , tim@xen.org, ian.campbell@citrix.com, naresh.bhat@linaro.org Subject: [Xen-devel] [PATCH] xen/arm: Init traps very early X-BeenThere: xen-devel@lists.xen.org X-Mailman-Version: 2.1.13 Precedence: list List-Id: List-Unsubscribe: , List-Post: , List-Help: , List-Subscribe: , MIME-Version: 1.0 Sender: xen-devel-bounces@lists.xen.org Errors-To: xen-devel-bounces@lists.xen.org X-Removed-Original-Auth: Dkim didn't pass. X-Original-Sender: julien.grall@linaro.org X-Original-Authentication-Results: mx.google.com; spf=pass (google.com: domain of patch+caf_=patchwork-forward=linaro.org@linaro.org designates 209.85.128.180 as permitted sender) smtp.mail=patch+caf_=patchwork-forward=linaro.org@linaro.org Mailing-list: list patchwork-forward@linaro.org; contact patchwork-forward+owners@linaro.org X-Google-Group-Id: 836684582541 List-Archive: The function init_traps setups the handler taken when Xen hits a BUG_ON/ASSERT. If an error happen before init_traps is called, we loose the backtrace. As the function doesn't require any specific setup, we can call it just after Xen has jumped in C code. Signed-off-by: Julien Grall --- xen/arch/arm/setup.c | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/xen/arch/arm/setup.c b/xen/arch/arm/setup.c index b9ce7a9..5bf8686 100644 --- a/xen/arch/arm/setup.c +++ b/xen/arch/arm/setup.c @@ -666,6 +666,7 @@ void __init start_xen(unsigned long boot_phys_offset, struct domain *dom0; setup_cache(); + init_traps(); percpu_init_areas(); set_processor_id(0); /* needed early, for smp_processor_id() */ @@ -709,8 +710,6 @@ void __init start_xen(unsigned long boot_phys_offset, set_current((struct vcpu *)0xfffff000); /* debug sanity */ idle_vcpu[0] = current; - init_traps(); - setup_virt_paging(); p2m_vmid_allocator_init();