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 BE8ADEAC7 for ; Fri, 10 Apr 2026 04:50:48 +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=1775796650; cv=none; b=HbhkOYl1Mg1mRS2g9aj6e6N4cMxDilHhX+K3/hD7StcFdHCuX+02+aIr+28y39Dnu16s0ITRUZLHWETOYXHjNY29uNo1xTWWi9aXGxqnRIAiRINOV633N3wpPQTGufbcPlJ9MHhPrpSdlIGwm+s7mH2797uqZqDBsZtrT9/Qhw8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1775796650; c=relaxed/simple; bh=vXofvo1m8OBdJOMnjG/myR5+E0MqcahYsCCk38Vlw9A=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=YZJSTx58GRqH80OHg15uXo5PUwT7JM71gwCbY9k0+OD8yBeA2H79aJsncPa9g5Pq/6EKUKdeekFUlX4f9dpZFFrCzsDeIUGp7H0I4kSFkHEThKON+fssN1jjEmPL19lYiupairVVNv7eLPFgSfj4cCFz9TJCm9Wzrwh2cnI+RC8= 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=GZovmfCj; 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="GZovmfCj" 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 69FD72008; Thu, 9 Apr 2026 21:50:42 -0700 (PDT) Received: from [10.163.181.174] (unknown [10.163.181.174]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 088823FAF5; Thu, 9 Apr 2026 21:50:43 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1775796648; bh=vXofvo1m8OBdJOMnjG/myR5+E0MqcahYsCCk38Vlw9A=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=GZovmfCj6dNyFwOVOI79CkD3FW9Uw+uSnlvictrhFQKqouJTQQ0FHHOD8AstrTPIu rvLZ1fl5GnWdFoPMKMst59k1jcr5ZZlsMyG2I7CkGovwCmZaqx/DpKIKuBgK4yTb6l fZkGjrOSgc9V3KEUiFXZi9FgJnTBf3kxNwuk7Ywc= Message-ID: <6d91c17f-2027-482a-b0b2-98ad258f1687@arm.com> Date: Fri, 10 Apr 2026 10:20:40 +0530 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: [RFC V1 06/16] arm64/mm: Convert READ_ONCE() as pudp_get() while accessing PUD To: "David Hildenbrand (Arm)" , 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, kasan-dev@googlegroups.com References: <20260224051153.3150613-1-anshuman.khandual@arm.com> <20260224051153.3150613-7-anshuman.khandual@arm.com> Content-Language: en-US From: Anshuman Khandual In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 08/04/26 5:45 PM, David Hildenbrand (Arm) wrote: > On 2/24/26 06:11, Anshuman Khandual wrote: >> Convert all READ_ONCE() based PUD accesses as pudp_get() instead which will >> support both D64 and D128 translation regime going forward. >> >> 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 >> Cc: kasan-dev@googlegroups.com >> Signed-off-by: Anshuman Khandual >> --- > > I was wondering for a second whether it would be better to structure > this as "convert READ_ONCE to use pxxxp_get() in fault.c" instead, > essentially, to touch each file only once. But will not that create too many patches ? > > Anyhow > > Reviewed-by: David Hildenbrand (Arm) > Thanks !