From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 792E5C433ED for ; Wed, 5 May 2021 07:43:31 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 288D5613D8 for ; Wed, 5 May 2021 07:43:31 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 288D5613D8 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=arm.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from list by lists.xenproject.org with outflank-mailman.122820.231686 (Exim 4.92) (envelope-from ) id 1leCBo-0004Mc-8D; Wed, 05 May 2021 07:43:24 +0000 X-Outflank-Mailman: Message body and most headers restored to incoming version Received: by outflank-mailman (output) from mailman id 122820.231686; Wed, 05 May 2021 07:43:24 +0000 Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1leCBo-0004MV-41; Wed, 05 May 2021 07:43:24 +0000 Received: by outflank-mailman (input) for mailman id 122820; Wed, 05 May 2021 07:43:23 +0000 Received: from all-amaz-eas1.inumbo.com ([34.197.232.57] helo=us1-amaz-eas2.inumbo.com) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1leCBn-0004M4-Hq for xen-devel@lists.xenproject.org; Wed, 05 May 2021 07:43:23 +0000 Received: from foss.arm.com (unknown [217.140.110.172]) by us1-amaz-eas2.inumbo.com (Halon) with ESMTP id 18460ea0-c944-4e09-9008-4025e38dbf26; Wed, 05 May 2021 07:43:22 +0000 (UTC) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 3E7731063; Wed, 5 May 2021 00:43:22 -0700 (PDT) Received: from e123311-lin.arm.com (unknown [10.57.0.42]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 03CAB3F718; Wed, 5 May 2021 00:43:20 -0700 (PDT) X-BeenThere: xen-devel@lists.xenproject.org List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Precedence: list Sender: "Xen-devel" X-Inumbo-ID: 18460ea0-c944-4e09-9008-4025e38dbf26 From: Michal Orzel To: xen-devel@lists.xenproject.org Cc: Stefano Stabellini , Julien Grall , Volodymyr Babchuk , bertrand.marquis@arm.com, wei.chen@arm.com Subject: [PATCH v3 03/10] arm: Modify type of actlr to register_t Date: Wed, 5 May 2021 09:43:01 +0200 Message-Id: <20210505074308.11016-4-michal.orzel@arm.com> X-Mailer: git-send-email 2.29.0 In-Reply-To: <20210505074308.11016-1-michal.orzel@arm.com> References: <20210505074308.11016-1-michal.orzel@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit AArch64 registers are 64bit whereas AArch32 registers are 32bit or 64bit. MSR/MRS are expecting 64bit values thus we should get rid of helpers READ/WRITE_SYSREG32 in favour of using READ/WRITE_SYSREG. We should also use register_t type when reading sysregs which can correspond to uint64_t or uint32_t. Even though many AArch64 registers have upper 32bit reserved it does not mean that they can't be widen in the future. ACTLR_EL1 system register bits are implementation defined which means it is possibly a latent bug on current HW as the CPU implementer may already have decided to use the top 32bit. Signed-off-by: Michal Orzel --- Changes since v2: -Modify the commit message --- xen/arch/arm/domain.c | 2 +- xen/include/asm-arm/domain.h | 2 +- 2 files changed, 2 insertions(+), 2 deletions(-) diff --git a/xen/arch/arm/domain.c b/xen/arch/arm/domain.c index 621f518b83..c021a03c61 100644 --- a/xen/arch/arm/domain.c +++ b/xen/arch/arm/domain.c @@ -330,7 +330,7 @@ static void schedule_tail(struct vcpu *prev) static void continue_new_vcpu(struct vcpu *prev) { - current->arch.actlr = READ_SYSREG32(ACTLR_EL1); + current->arch.actlr = READ_SYSREG(ACTLR_EL1); processor_vcpu_initialise(current); schedule_tail(prev); diff --git a/xen/include/asm-arm/domain.h b/xen/include/asm-arm/domain.h index c6b59ee755..2d4f38c669 100644 --- a/xen/include/asm-arm/domain.h +++ b/xen/include/asm-arm/domain.h @@ -156,7 +156,7 @@ struct arch_vcpu /* Control Registers */ register_t sctlr; - uint32_t actlr; + register_t actlr; uint32_t cpacr; uint32_t contextidr; -- 2.29.0