From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 6E61B3E9F93 for ; Mon, 7 Sep 2026 03:50:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788753058; cv=none; b=HihgL1Cmm953lWxzRzu7iXVHyOajBNdvVnDymfJKnfO9p8NWn6B0FO62xZfraZPMnvnsUYlmmk5nossJViavaVvHlAir8b7xQ+NQEjOTWUaORZs6xZv53ZE4pKwsjLofD9HrnWjMqcvVNvrCQeg9p0AlZg/GlJubzJHvPdzzWy8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1788753058; c=relaxed/simple; bh=/rjGzAt748dsaT36LBnwBIEZW4gfjkEspNbbmVlfxKY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=imMWYJzUjziH8GmvG/iRpH0qoatYBXKMO0ynKI045LAhv4ZtxQNsZNzljGsq7qZpspXDY47Hs48zoLkAqbbvIWYKnUtCxs8FDDzS2+94vMNcSJIMIfEPnJlrSAMynyu95wmqF5hTSNcpJ3rtgv6fteay0TmSuCDc0xsdNWy63pM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b=sMy811HE; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.b="sMy811HE" 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 D5DE61477; Sun, 6 Sep 2026 20:50:49 -0700 (PDT) Received: from localhost (a085714.arm.com [10.164.19.28]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id CB6B53F7B4; Sun, 6 Sep 2026 20:50:52 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1788753053; bh=/rjGzAt748dsaT36LBnwBIEZW4gfjkEspNbbmVlfxKY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sMy811HEo7xsqsm1p6JcAzLBb1J9PIdm3/h3H35Mn7WqMv0uYuDIVHpZ3IQqhy+bA sWeT+NJFvEID6NFJBlSkLv1xwq/uGZiqo3RpydBbivEGHiwYUfOgUUsd4NohfsU0vo apZdfIn31OFzbtwwAWTrajkO9WPqqLFAmPjA/4BU= From: Anshuman Khandual To: 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, linux-mm@kvack.org Subject: [PATCH V2 05/14] arm64/mm: Override read-write accessors for vm_page_prot Date: Mon, 7 Sep 2026 09:20:20 +0530 Message-ID: <20260907035030.2839978-6-anshuman.khandual@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20260907035030.2839978-1-anshuman.khandual@arm.com> References: <20260907035030.2839978-1-anshuman.khandual@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 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 66bf5bbe484e..2b457db19be0 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