From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from kanga.kvack.org (kanga.kvack.org [205.233.56.17]) by smtp.lore.kernel.org (Postfix) with ESMTP id 245D3EE49AC for ; Tue, 22 Aug 2023 17:05:33 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 6D58A28004F; Tue, 22 Aug 2023 13:05:32 -0400 (EDT) Received: by kanga.kvack.org (Postfix, from userid 40) id 684F6280046; Tue, 22 Aug 2023 13:05:32 -0400 (EDT) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 54CA628004F; Tue, 22 Aug 2023 13:05:32 -0400 (EDT) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0010.hostedemail.com [216.40.44.10]) by kanga.kvack.org (Postfix) with ESMTP id 429BD280046 for ; Tue, 22 Aug 2023 13:05:32 -0400 (EDT) Received: from smtpin02.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay03.hostedemail.com (Postfix) with ESMTP id 1D110A0365 for ; Tue, 22 Aug 2023 17:05:32 +0000 (UTC) X-FDA: 81152366904.02.1D18221 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by imf24.hostedemail.com (Postfix) with ESMTP id 6967118003C for ; Tue, 22 Aug 2023 17:05:30 +0000 (UTC) Authentication-Results: imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=G928dxMH; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf24.hostedemail.com: domain of broonie@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=broonie@kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1692723930; h=from:from:sender:reply-to:subject:subject:date:date: message-id:message-id:to:to:cc:cc:mime-version:mime-version: content-type:content-type:content-transfer-encoding: in-reply-to:in-reply-to:references:references:dkim-signature; bh=+/XUXGpY2ACCPD3YzzrpK3JtSQqnOrDZMR5OCAEhgDg=; b=ExmFzNvJJq5YxCwGuo5e4dJimsARQ/u5Yiwqks0M9Aqa/biJF9TcPb8JTT1Fta6GZDE+jF wpkqhz4e18ixSsx6dFyxGYHXYh4UdrPw/TZEsMLFjG8OngTnkO+E5J+/pNsJYtegLaEiQG jWXbnc0XLQi5L+0OhS+C8QreBKS3kkw= ARC-Authentication-Results: i=1; imf24.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=G928dxMH; dmarc=pass (policy=none) header.from=kernel.org; spf=pass (imf24.hostedemail.com: domain of broonie@kernel.org designates 139.178.84.217 as permitted sender) smtp.mailfrom=broonie@kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1692723930; a=rsa-sha256; cv=none; b=MLwNPYvFDp41l3lv8quoQJOdBRmtsYuy+pvjdlHHvB0g1ADllBq0dk8Gp3jcvCeBLsLTrv MTX2X0s6SQhQFN6qPO61jnT6wzyhBWEpJsXpih+NyHUNfrGEkJwNIMRjHCfZLwR4B/tiNo qFpVYHySHZZZto52inpZcB9wazvE8fk= Received: from smtp.kernel.org (relay.kernel.org [52.25.139.140]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (2048 bits)) (No client certificate requested) by dfw.source.kernel.org (Postfix) with ESMTPS id 7AE5061F83; Tue, 22 Aug 2023 17:05:29 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id C885FC433C8; Tue, 22 Aug 2023 17:05:22 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1692723928; bh=+/XUXGpY2ACCPD3YzzrpK3JtSQqnOrDZMR5OCAEhgDg=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=G928dxMHkk1xDk/SX1dNnL+spqkcZRuq0C5Z40fu1Tb9wObRKQhtFzT0ipOQBh80X M0BVrVcY8VmxczuqKrntaU8eZ0hqbR8EE1e7UAwRJz7snKD2v4GCMfQ9hgFuv0aBvc 38dD7dDK0lef3oOPG14kshG+9z1JoNQxNiubdga4OgfcfWS0/Ve3yY/2BVaHKd3pvN cYaVOE7zu3UopoUb04Il5Y+Q0rXflj/XshyiU6vP1UN0j8lgReDw7ES6DUIaCc0AWt YsDqY20pamlKghLyhjkFUTLoZ7KEg8lQf5JmsfEUOmiIbu47LoB18jET0Zcw96dt7s 2Z35AOyitp5nQ== Date: Tue, 22 Aug 2023 18:05:19 +0100 From: Mark Brown To: Catalin Marinas Cc: Will Deacon , Jonathan Corbet , Andrew Morton , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Arnd Bergmann , Oleg Nesterov , Eric Biederman , Kees Cook , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy , "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , linux-arm-kernel@lists.infradead.org, linux-doc@vger.kernel.org, kvmarm@lists.linux.dev, linux-fsdevel@vger.kernel.org, linux-arch@vger.kernel.org, linux-mm@kvack.org, linux-kselftest@vger.kernel.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org Subject: Re: [PATCH v4 21/36] arm64/mm: Implement map_shadow_stack() Message-ID: <007e1239-1258-4b89-b5db-a1c505e7aff5@sirena.org.uk> References: <20230807-arm64-gcs-v4-0-68cfa37f9069@kernel.org> <20230807-arm64-gcs-v4-21-68cfa37f9069@kernel.org> <9c722954-8f30-425e-a0a4-6edad463620f@sirena.org.uk> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="exkeVuAAvGvWqCpS" Content-Disposition: inline In-Reply-To: X-Cookie: MIT: X-Rspamd-Server: rspam09 X-Rspamd-Queue-Id: 6967118003C X-Stat-Signature: smn1m4wugyzceo6aos6nx389azfizitc X-Rspam-User: X-HE-Tag: 1692723930-525283 X-HE-Meta: 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 gR8UUxMa K2nqh+9nPHUEyZebA1w++WiHPPQ11Q6bD7I4tZKHkbmzazUk9Cz5d2hpK8CqxCxCDEt/MZf0zUQnrx6f8k/90VZGKmwoZW33ntnZPd1lhqgI+kxtc7yQ/dROYyacw+3Hz/KqraCGlvfUxvxLzFilsstyqMg6bXvta+DB5ebBxJRgtlqxVMMs87gCwOEXKWkVYaz5chvZc+4kLZeoB8/75DMHcx/QoJuPyZBpnKPzk62BosNKpkOYaZXB2L8hzY93YigAWhfiuDcSpjcDFAPVq+Zpx7QM4nlKc7n1GkuwlyMGJ1FzOpqHHHcsg7Z8hwlZS4BipkzSoNadyHkIjGiaVMHXmmuFDZj1p/w+Z17sDWddeGmPhaq2o42+UFfP0od0twfN/XttAsT+qMYJTvX0LlRKlV408fkQ0yrFwPgkKIuiMjUAr18kejuSxw4P6hvycBX4GaHl4kLsIwlr9tI8u34nneQ== X-Bogosity: Ham, tests=bogofilter, spamicity=0.000000, version=1.2.4 Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: --exkeVuAAvGvWqCpS Content-Type: text/plain; charset=us-ascii Content-Disposition: inline Content-Transfer-Encoding: quoted-printable On Tue, Aug 22, 2023 at 05:40:38PM +0100, Catalin Marinas wrote: > On Fri, Aug 18, 2023 at 06:08:52PM +0100, Mark Brown wrote: > > mprotect() uses arch_validate_flags() which we're already having cover > > this so it's already covered. > I searched the patches and there's no change to the arm64 > arch_validate_flags(). Maybe I missed it. It's in v5, the update to arch_validate_flags() was one of your comments =66rom another patch in the series. --exkeVuAAvGvWqCpS Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmTk6s4ACgkQJNaLcl1U h9DssAf9EW4nFH7RlADvE4EkIEjYj6kUziCf6Hh2iZGyNLK3aFRxnL1nY1u1zP6j q/ACfgdD1+OLEnvbezfXu1bJ6avmKqmnJHnkP7zF5C/63tXoF8IUUwodZXV4d3DP 54ezvT4yQ8Yu5AxpmLPCItJkHbeLAezr41EbEpcJWSfkAnXqhT/cO7JREhVKH/3f czlWXKNy8c+vwIXC7x7mRKOCeBcJ4mofi6i5T8JDYcL1b59ItFYO7zfcB1H/nPh7 qV10AxG61aXsJoiboml1UjyOA8+ZaiLpjgGmxZ1YEZSF3C+TVw2Ul5Z4yHtgdVdA FQHfQawXdzOTgnqQG2uCel7CjV9LDQ== =ME24 -----END PGP SIGNATURE----- --exkeVuAAvGvWqCpS--