From patchwork Tue May 14 12:21:28 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Grall X-Patchwork-Id: 164149 Delivered-To: patch@linaro.org Received: by 2002:a92:9e1a:0:0:0:0:0 with SMTP id q26csp2552090ili; Tue, 14 May 2019 05:23:08 -0700 (PDT) X-Google-Smtp-Source: APXvYqxzSjhCfrZmmInJ4Q5iNPc/yAF72ibEWBUjl5zcsKD7KI4q340ccNWjgvrO9N9QWHN1SJI8 X-Received: by 2002:a24:6292:: with SMTP id d140mr3084575itc.12.1557836588415; Tue, 14 May 2019 05:23:08 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1557836588; cv=none; d=google.com; s=arc-20160816; b=VgsIV8ZoTJkoAm+Le3svzkpLnOdnuVgaOByCG+N4K0yTd2C2Eay5TzpsGK1HXTTfi9 jqvDMm9QcVoVbYp6ICUdjkEyiJSIw/9vl9+82Q3hfJF5iGoKm2YjeOlY9cCVpwrbTGPu ESG7Yk73Rtf1mFZBj1O5xXB0VFNIQm+6r6yCdaiZVZROWzUJzdn66VYcKQX7tbza4Syu nE1xqe7eBmL5RoAUAX5aBAzR0Az10jW3Dju+R5LINilbTLIbh2YqVRA8rY/A3Bn6RS+k kHsLu3xiq6CD6cffm8+liOCl3sqlkd/TpXsksNVT6Xe4Kc7UrU3uHO9w+/64i0p9Mw1N 1ozw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=sender:errors-to:content-transfer-encoding:mime-version:cc :list-subscribe:list-help:list-post:list-unsubscribe:list-id :precedence:subject:references:in-reply-to:message-id:date:to:from; bh=rKH6b2vJKj4RaNahOIvZ5cHDJ9vsSUsddb3fOXvecRA=; b=I9fygiQMf2Hlk5yQT4oS5PK13XzPo4fWN5FhWiE9mcU2rj+3QTiwFVKujjAxB/mPvb 3IZE20AxMvm/RVmBKdoVJQEPSUeerkL3AcTKNIjXxVJW4EwDTdogyrhT8wTPwJIMcbO/ Mc+tn7hs4ddFsa9qKf/THbRjqHC8HyTNGOsAbvwdvliWbCfDIHFPpEKdeyLUrfIRhKCk tRMoOO8tx1qgM4fLEDQzVNDO5nq0G1EukQ+ds7xU2/pH/5E/maXc0Sq9QfEW/RdUqlel ckbVRPYQtvf5p0Ql+WSXmp8MW5Np8r6h9eE3oLVIR5YtvqQeWSZlWwvUEapYycfPiW7x GQTQ== ARC-Authentication-Results: i=1; mx.google.com; spf=pass (google.com: best guess record for domain of xen-devel-bounces@lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Return-Path: Received: from lists.xenproject.org (lists.xenproject.org. [192.237.175.120]) by mx.google.com with ESMTPS id d43si9922817jaf.100.2019.05.14.05.23.08 (version=TLS1_2 cipher=ECDHE-RSA-CHACHA20-POLY1305 bits=256/256); Tue, 14 May 2019 05:23:08 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of xen-devel-bounces@lists.xenproject.org designates 192.237.175.120 as permitted sender) client-ip=192.237.175.120; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of xen-devel-bounces@lists.xenproject.org designates 192.237.175.120 as permitted sender) smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hQWRj-0000BL-4S; Tue, 14 May 2019 12:22:15 +0000 Received: from us1-rack-dfw2.inumbo.com ([104.130.134.6]) by lists.xenproject.org with esmtp (Exim 4.89) (envelope-from ) id 1hQWRh-00007X-3N for xen-devel@lists.xenproject.org; Tue, 14 May 2019 12:22:13 +0000 X-Inumbo-ID: e6741eb8-7642-11e9-8980-bc764e045a96 Received: from foss.arm.com (unknown [217.140.101.70]) by us1-rack-dfw2.inumbo.com (Halon) with ESMTP id e6741eb8-7642-11e9-8980-bc764e045a96; Tue, 14 May 2019 12:22:11 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.72.51.249]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A4EE315AB; Tue, 14 May 2019 05:22:11 -0700 (PDT) Received: from e108454-lin.cambridge.arm.com (e108454-lin.cambridge.arm.com [10.1.196.50]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 71D213F71E; Tue, 14 May 2019 05:22:10 -0700 (PDT) From: Julien Grall To: xen-devel@lists.xenproject.org Date: Tue, 14 May 2019 13:21:28 +0100 Message-Id: <20190514122136.28215-20-julien.grall@arm.com> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20190514122136.28215-1-julien.grall@arm.com> References: <20190514122136.28215-1-julien.grall@arm.com> Subject: [Xen-devel] [PATCH MM-PART2 v2 11/19] xen/arm32: head: Don't set MAIR0 and MAIR1 X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Cc: Oleksandr_Tyshchenko@epam.com, Julien Grall , Stefano Stabellini , Andrii Anisov MIME-Version: 1.0 Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" The co-processor registers MAIR0 and MAIR1 are managed by EL1. So there are no need to initialize them during Xen boot. Signed-off-by: Julien Grall Reviewed-by: Andrii Anisov --- Changes in v2 - Add Andrii's reviewed-by --- xen/arch/arm/arm32/head.S | 2 -- 1 file changed, 2 deletions(-) diff --git a/xen/arch/arm/arm32/head.S b/xen/arch/arm/arm32/head.S index d42a13556c..3448817aab 100644 --- a/xen/arch/arm/arm32/head.S +++ b/xen/arch/arm/arm32/head.S @@ -212,8 +212,6 @@ cpu_init_done: /* Set up memory attribute type tables */ ldr r0, =MAIR0VAL ldr r1, =MAIR1VAL - mcr CP32(r0, MAIR0) - mcr CP32(r1, MAIR1) mcr CP32(r0, HMAIR0) mcr CP32(r1, HMAIR1)