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 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id F3263C54FCD for ; Wed, 29 Jul 2026 12:26:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:Content-Transfer-Encoding: MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:Cc:To:From: Reply-To:Content-Type:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=jo53haVio1VlnrS6alJTUrd8+2Sz484gQrvanLZfOno=; b=fPxKNms/oPvCaG8cJyJo7edZgu MWHckL9qqfsLxtSz1Kqoy8aNBawENFgscw4JqNWnP82CJqKx4rBJJ+qp+gITWInF/8dQuk4GPEnOc rHC4HBbQxn+sbM8zSq9sl6PWhE68ISS/Z05/agEaYZbLWz2JXTywpPY+nNXcXxSWS3n8duAR643k4 i6PHX3CEr5AroZjBdZ8ySYiY06197IWjtKgW5Irznyw56LUvUffe2rRYZzYYZRn3TAji8pe7Nr3yl ZrtJlfaejZA/2IVPbmN4iRS7P/j6v+L/75M8kT3nV2Wy6W4jlVcRxdqSHSbuoxDoMfj1ISGC+Wfqq QhyucCHw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wp3MD-00000007tWp-0T9Y; Wed, 29 Jul 2026 12:25:57 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1wp3M2-00000007tPm-42Ym for linux-arm-kernel@lists.infradead.org; Wed, 29 Jul 2026 12:25:48 +0000 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 685201688; Wed, 29 Jul 2026 05:25:42 -0700 (PDT) Received: from a085714.blr.arm.com (a085714.arm.com [10.164.19.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id DA3563F66F; Wed, 29 Jul 2026 05:25:42 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1785327946; bh=e/tbyb7uuGOwzaIiWg/gKtdSiKpAp+82nFGZ+nCk/aY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=RazQNAceO0MYDyrP5zeJqA93wHPK2RgJ6USACg5ZxgtqU0RiLyvBmQ86CGFOOkgV2 aLP4xDWQnJYkgjpAnSi2SVOQBeB3qrlb+wzjF0ernImZBdwDGYl1XwSISjYY576f/H bMbTnxPAN7yZ/1dYSQzhgpR8fl0OVgp1WZtr/YRQ= From: Anshuman Khandual To: linux-mm@kvack.org, linux-arm-kernel@lists.infradead.org Cc: Anshuman Khandual , Catalin Marinas , Will Deacon , Ryan Roberts , Mark Rutland , Lorenzo Stoakes , Andrew Morton , David Hildenbrand , Mike Rapoport , Linu Cherian , linux-kernel@vger.kernel.org Subject: [PATCH 09/17] arm64/mm: Override read-write accessors for vm_page_prot Date: Wed, 29 Jul 2026 17:54:44 +0530 Message-ID: <20260729122452.3797443-10-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260729122452.3797443-1-anshuman.khandual@arm.com> References: <20260729122452.3797443-1-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260729_052547_041019_739900F2 X-CRM114-Status: UNSURE ( 8.65 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Override pgprot_[read|write]() accessors using ptval_[get|set]() providing required single copy atomic operation for vma->vm_page_prot. Cc: Catalin Marinas Cc: Will Deacon Cc: Ryan Roberts Cc: Mark Rutland Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org Signed-off-by: Anshuman Khandual --- arch/arm64/include/asm/pgtable.h | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h index 4efcacec6f01..39635f9550c2 100644 --- a/arch/arm64/include/asm/pgtable.h +++ b/arch/arm64/include/asm/pgtable.h @@ -122,6 +122,18 @@ static inline pgd_t pgdp_get(pgd_t *pgdp) return ptval_get(*pgdp); } +#define pgprot_read pgprot_read +static inline pgprot_t pgprot_read(pgprot_t *prot) +{ + return ptval_get(*prot); +} + +#define pgprot_write pgprot_write +static inline void pgprot_write(pgprot_t *prot, pgprot_t val) +{ + ptval_set(*prot, val); +} + #ifdef CONFIG_TRANSPARENT_HUGEPAGE #define __HAVE_ARCH_FLUSH_PMD_TLB_RANGE -- 2.43.0