From patchwork Thu May 5 09:44:00 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Catalin Marinas X-Patchwork-Id: 67198 Delivered-To: patch@linaro.org Received: by 10.140.92.199 with SMTP id b65csp652593qge; Thu, 5 May 2016 02:46:21 -0700 (PDT) X-Received: by 10.98.55.129 with SMTP id e123mr19183377pfa.4.1462441581862; Thu, 05 May 2016 02:46:21 -0700 (PDT) Return-Path: Received: from bombadil.infradead.org (bombadil.infradead.org. [2001:1868:205::9]) by mx.google.com with ESMTPS id n8si10442808pac.162.2016.05.05.02.46.21 for (version=TLS1_2 cipher=ECDHE-RSA-AES128-GCM-SHA256 bits=128/128); Thu, 05 May 2016 02:46:21 -0700 (PDT) Received-SPF: pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) client-ip=2001:1868:205::9; Authentication-Results: mx.google.com; spf=pass (google.com: best guess record for domain of linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org designates 2001:1868:205::9 as permitted sender) smtp.mailfrom=linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ayFpz-0007Tz-L6; Thu, 05 May 2016 09:44:51 +0000 Received: from foss.arm.com ([217.140.101.70]) by bombadil.infradead.org with esmtp (Exim 4.80.1 #2 (Red Hat Linux)) id 1ayFpc-0007DJ-MQ for linux-arm-kernel@lists.infradead.org; Thu, 05 May 2016 09:44:29 +0000 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 5B748437; Thu, 5 May 2016 02:44:16 -0700 (PDT) Received: from e104818-lin.cambridge.arm.com (usa-sjc-imap-foss1.foss.arm.com [10.72.51.249]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id 70BDC3F246; Thu, 5 May 2016 02:44:08 -0700 (PDT) From: Catalin Marinas To: Will Deacon Subject: [PATCH 2/4] arm64: Implement pmdp_set_access_flags() for hardware AF/DBM Date: Thu, 5 May 2016 10:44:00 +0100 Message-Id: <1462441442-6996-3-git-send-email-catalin.marinas@arm.com> X-Mailer: git-send-email 2.1.4 In-Reply-To: <1462441442-6996-1-git-send-email-catalin.marinas@arm.com> References: <1462441442-6996-1-git-send-email-catalin.marinas@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20160505_024428_847151_4BA9B743 X-CRM114-Status: UNSURE ( 6.95 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -9.0 (---------) X-Spam-Report: SpamAssassin version 3.4.0 on bombadil.infradead.org summary: Content analysis details: (-9.0 points) pts rule name description ---- ---------------------- -------------------------------------------------- -5.0 RCVD_IN_DNSWL_HI RBL: Sender listed at http://www.dnswl.org/, high trust [217.140.101.70 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record -2.1 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] X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.20 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: linux-arm-kernel@lists.infradead.org, Steve Capper MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patch=linaro.org@lists.infradead.org The update to the accessed or dirty states for block mappings must be done atomically on hardware with support for automatic AF/DBM. The ptep_set_access_flags() function has been fixed as part of commit 66dbd6e61a52 ("arm64: Implement ptep_set_access_flags() for hardware AF/DBM"). This patch brings pmdp_set_access_flags() in line with the pte counterpart. Fixes: 2f4b829c625e ("arm64: Add support for hardware updates of the access and dirty pte bits") Cc: # 4.4.x: 66dbd6e61a52: arm64: Implement ptep_set_access_flags() for hardware AF/DBM Cc: # 4.3+ Reviewed-by: Will Deacon Signed-off-by: Catalin Marinas --- arch/arm64/include/asm/pgtable.h | 10 ++++++++++ 1 file changed, 10 insertions(+) _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 5237331e97f4..bdfbaf96b426 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -553,6 +553,16 @@ extern int ptep_set_access_flags(struct vm_area_struct *vma, unsigned long address, pte_t *ptep, pte_t entry, int dirty); +#ifdef CONFIG_TRANSPARENT_HUGEPAGE +#define __HAVE_ARCH_PMDP_SET_ACCESS_FLAGS +static inline int pmdp_set_access_flags(struct vm_area_struct *vma, + unsigned long address, pmd_t *pmdp, + pmd_t entry, int dirty) +{ + return ptep_set_access_flags(vma, address, (pte_t *)pmdp, pmd_pte(entry), dirty); +} +#endif + /* * Atomic pte/pmd modifications. */