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 31DC42D8385 for ; Wed, 16 Sep 2026 13:36:02 +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=1789565764; cv=none; b=hd7dkdIG6rWKXolaOw0sKjDqXEucLAVbBpcX9gL8EDwXnRd6XIC/f/sib8bN5b8/DYRgN67s3t4tAeZtZuaxvtjGrHzwQ8AD/2HuU4p/XoCYHhQR9iN8gZSZKe+WnnTGkoJa5+OQynYrRgKHbeY9GuBQ2Aeyf6IJKQMX6jPgwQc= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789565764; c=relaxed/simple; bh=h3j02ULJJRUXdGgpq39NavbcTmpKsjv9A+0fNHjMtLE=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=L8J9gpB5geTjpvY5U/Vm4VZfuGSlJnNhw+VbAGZBNTLHFjLwpcWDdr1MSewmvE205kUwMl6omILNORTBB+bpWpmo4kNcLCCgwv+L9rtKKJON7Ev68Cn9ZfM2zWcynTetUarjSvAgDt7hVl2jIMihsguAOByUOxNEBJsnwywlMmc= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=it8+Cdwk; 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="it8+Cdwk" Received: by smtp.kernel.org (Postfix) with ESMTPSA id 90E7C1F000FF; Wed, 16 Sep 2026 13:36:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1789565762; bh=bwyk+5gUmPQM5HlVeH3up+pJy3bi1L00FIGnnBnAiJY=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=it8+CdwkIuYEVwHgoARhILclAx9xQneyJikZNFw5FuiXfBQKZjuHAWEm1zRK0HBEZ MBu8dds16gBsPre5OB1tdPNsQ7AjwC6eW7VT293sDASWfg9+7a48j7tkMR5WSTWBrR MQ3ogNFN3BPDxIc2an8RVAS0fZ8ZLOBdLClqi18I0wbMhkJmcCXLWK111NF7U8OHz7 Qo9Nlk4gyT0emWDUu+ufaY+JkFfXl/FeYDomMFI+af5BkmAhJVhVY2w5tdRVIuXMr2 R4LMRQYCkHDCI7geEAOMv3M4ixqW1W/ccumk8vv55zTvPL9ytZ6NtixXG/NRqT+xD0 triSr+ZAmcSaw== Message-ID: <1d2108bc-6b67-43ce-ab13-70ed241024e4@kernel.org> Date: Wed, 16 Sep 2026 15:35:58 +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 02/14] arm64/mm: Route all pgtable reads via ptval_get() 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> <20260907035030.2839978-3-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: > Define arm64 platform specific implementations for new pxdp_get() helpers. > These resolve into READ_ONCE(), thus ensuring required single copy atomic > semantics for the page table entry reads. > > In future this infrastructure can be used for D128 to maintain single copy > atomicity semantics with inline asm blocks. > > 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 > --- Reviewed-by: David Hildenbrand (Arm) -- Cheers, David