From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 E34371448D5; Wed, 29 Apr 2026 05:21:09 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777440070; cv=none; b=r1Bhg0tCJsOCk9wUu7uriIrUH6SMvY0l/7QUAGflwcDqp2Bqy4lepXhogzI7QRxeenUbPCFrO2OvGqE2sLlkt+oZSifM8fIPSzeuV0lpDWUwhocdNBeDjuV0u6UKde7J0kTzv86kYmdbyVaIpzDEEuBJBgFJOtahSGPzRq69jE8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1777440070; c=relaxed/simple; bh=JbSRCPswSV+fr3ncCbhnpMP5t/4xPQUWyw0UcG4ccnI=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=FXJdMzYPydhfpa/x30TzoUF0drMcSrrGDzzAwZgQTbBLWbiISzn97wVurV5zbxacd+jXd2aQvKr27zRjpCOQBsh8aiTUUHfrFSkoJypH99LnewkpvlfP4visIR6TqmYumQRmzvU8j3mkeZT5g6WhnW5rPhAVgcmDaJmrOcupxm4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=LXyJ1Lbx; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="LXyJ1Lbx" Received: by smtp.kernel.org (Postfix) with ESMTPSA id AADF4C19425; Wed, 29 Apr 2026 05:21:07 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1777440069; bh=JbSRCPswSV+fr3ncCbhnpMP5t/4xPQUWyw0UcG4ccnI=; h=Date:Subject:To:Cc:References:From:In-Reply-To:From; b=LXyJ1Lbx7eea6IE0Le8OInjBwSgYxAglA2n5i5lPYTDEiyv5/of+aBsboS8DfmG8y RjYDyuDFWs11TKOZxsTYft/EPowNU3hcg3gGXLIHLAu3qlgCL1XAWkrnM2FTe7uJ7I IW0OKMHHGD4fLTtAtvWd9ypPtmb6qZTJKQ22pRxQUS8W0a4O0FU8VPaeneh5gRLzgU 8kafCwhiN7RLiwwRx4nFl7+kukWq8tuRLEwDIBHqsCeeghj0A35cILjK2GOB6oeof0 6wPTFDiutj3nOsTDg03zLg6ZEMMPbKOR4czUi6ZuhPS6vYnUwksrpj0K1cILnr2ENl CUEhu1NolO4tQ== Message-ID: <64125a84-848d-46f0-9aec-d0917294fb45@kernel.org> Date: Wed, 29 Apr 2026 07:21:00 +0200 Precedence: bulk X-Mailing-List: linux-s390@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH v2] mm/gup: cleanup pgtable entry accessors To: Alexander Gordeev Cc: Kevin Brodsky , Ryan Roberts , Andrew Morton , linux-s390@vger.kernel.org, linux-mm@kvack.org, linux-kernel@vger.kernel.org, Gerald Schaefer , Heiko Carstens , Vasily Gorbik References: <20260421051754.1691221-1-agordeev@linux.ibm.com> <5f45cc59-d71f-409c-8cfb-6eba23b0a447@kernel.org> <3faf45f0-30f5-4a11-850e-3e5ed7668c72-agordeev@linux.ibm.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 4/29/26 07:17, Alexander Gordeev wrote: > On Tue, Apr 28, 2026 at 09:45:59PM +0200, David Hildenbrand (Arm) wrote: >> In general, LGTM. >> >> I do wonder, though, if we want to switch to pte_same/pmd_same/pud_same while at it? > > I thought about that too, but decided to keep it focused on direct > dereferences (as it fixes a real issue with the pte kasan sanitizer). > > I can send updated patch or a follow-up patch - as you prefer. But > if you like the follow-up I would suggest to un-squash the original > series to get it in three logical steps: 1 - pXdp_get() fix, 2 - > lockless access fix, 3 - pXd_same() cleanup. I'd prefer to keep 1 and 2 squashed. I don't see a good reason to temporarily do the wrong thing :) A follow-up patch works for me, thanks! Acked-by: David Hildenbrand (Arm) -- Cheers, David