From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9E0473C7689 for ; Wed, 16 Sep 2026 13:39:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789565997; cv=none; b=kpny4ct/adpzr3rFQImVxceaMvJk/mTB84a2N/LjiaCMbehH8EOHnpm0BW67vehrgkdJ7WHnnFp411An5Mmt4wbM6n53XlfRxUQ+qXo/RMf1HmryTZurTjNaeBVmix6J7iPbw7w+qBdmTZN8Gudpq2VAnlMDcWi6dkB6jtEwnHQ= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789565997; c=relaxed/simple; bh=cqX0cwCwYMjVdPC2T6/IWoJ8CHySU2qVgM5MtI6UNk0=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=kmKYLF2rqE3pXJ2hswmyRY+oWjoEB4WX+Vs+vKf+qFlt8dWbVl1HqD1E/OeF10xsVK2sWm/tSyBK7nq1UgNpPMxsZtHAwh0sb6OzXh1xu50k/yLR164z/URmwa6BfXm2xHXsW9if2qjMKzPJ1yqmvP4NeE9GalCZVP58ijXK9DQ= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=WXQtV7ay; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="WXQtV7ay" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 124571F000FF; Wed, 16 Sep 2026 13:39:33 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789565976; bh=8CJKTKLi7BcZoiOMOqeOWLjpP8wwIDKBXVGpShZbw04=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=WXQtV7ay4gN/YNNAauRSJqHtJ0VSotrNqFfDJUGMVHnVWut9ye6AgxhWmmWcVk7ag fUv5fSxpMSSRWPTgqzAl8ayMt0cQ2qnQ712DFhyu6FKIgxuR+tDm5J8se/eE9Nn831 /Lr7fnIbv67BsV1wXPovIpJWyeaJs+5GW+qqkK/arJtUCXzwcczMF+UQhFa8bPezFT 7D0hc3CcgIeqmuKB3MlqiNCfPysFgetZusD+wdfqQCuDcRjyJD6n7nVQVbKpMbpVRW nrm0xblVIENDvUYC4ox0BgMVLyUmRFLjYH9gnzEwwV8XNXSncO+ovWJRPr+FLbSjtW 7T3veWrMx3aDQ== Message-ID: <51993407-083f-45b7-990b-105a0c08a5a0@kernel.org> Date: Wed, 16 Sep 2026 15:39:31 +0200 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH V2 05/14] arm64/mm: Override read-write accessors for vm_page_prot To: Anshuman Khandual , linux-arm-kernel@lists.infradead.org Cc: Catalin Marinas , Will Deacon , Ryan Roberts , Mark Rutland , Lorenzo Stoakes , Andrew Morton , Mike Rapoport , Linu Cherian , linux-kernel@vger.kernel.org, linux-mm@kvack.org References: <20260907035030.2839978-1-anshuman.khandual@arm.com> <20260907035030.2839978-6-anshuman.khandual@arm.com> From: "David Hildenbrand (Arm)" Content-Language: en-US Autocrypt: addr=david@kernel.org; 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charset=UTF-8 Content-Transfer-Encoding: 7bit On 9/7/26 05:50, Anshuman Khandual wrote: > 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); > +} Similarly a const pointer here. Reviewed-by: David Hildenbrand (Arm) -- Cheers, David