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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id AC671EB64DD for ; Wed, 14 Jun 2023 23:34:37 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231363AbjFNXeg (ORCPT ); Wed, 14 Jun 2023 19:34:36 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:33516 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229516AbjFNXee (ORCPT ); Wed, 14 Jun 2023 19:34:34 -0400 Received: from dfw.source.kernel.org (dfw.source.kernel.org [139.178.84.217]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4B1901BD4; Wed, 14 Jun 2023 16:34:33 -0700 (PDT) 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 DCDB960DFC; Wed, 14 Jun 2023 23:34:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B75ABC433C0; Wed, 14 Jun 2023 23:34:23 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1686785672; bh=9vAVA0vgFk7ZYI1wt4Vl5FRDTi/wrA+OF5wp7ML/pow=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=AiI6WTDAzKwrOxtz6nWJfROnB1o1cyZzVocJOvEv8rNr3DjJoaRxjnyl6KI1/azc7 dnNjrbFqUc9BNT3gfLjxvYgGEoa/q8LZv/7/yKnnmFDxWDSmY81UsfknYZaSh0lC/p vTSl1mqWphg9hn6sB7tlbwNgjyoaf9+/fdlO0P8lH9PLRI1rvbRYSumKTyrNsiz887 zbFYdFN05Yy8WyzQ6HIUAMRSOGfEyPmVf1zlx4UM3La5NgbKBGrF30zc40THSrsbDC sSqEi0WaYlSbqhSMQPcV8yqqyxelVF2OWZp+dG+Qv50nvA8Qfi9Ju1mVwxbpCJLNWM 4H9tyl1pq2taw== Date: Thu, 15 Jun 2023 00:34:20 +0100 From: Mark Brown To: Rick Edgecombe Cc: x86@kernel.org, "H . Peter Anvin" , Thomas Gleixner , Ingo Molnar , linux-kernel@vger.kernel.org, linux-doc@vger.kernel.org, linux-mm@kvack.org, linux-arch@vger.kernel.org, linux-api@vger.kernel.org, Arnd Bergmann , Andy Lutomirski , Balbir Singh , Borislav Petkov , Cyrill Gorcunov , Dave Hansen , Eugene Syromiatnikov , Florian Weimer , "H . J . Lu" , Jann Horn , Jonathan Corbet , Kees Cook , Mike Kravetz , Nadav Amit , Oleg Nesterov , Pavel Machek , Peter Zijlstra , Randy Dunlap , Weijiang Yang , "Kirill A . Shutemov" , John Allen , kcc@google.com, eranian@google.com, rppt@kernel.org, jamorris@linux.microsoft.com, dethoma@microsoft.com, akpm@linux-foundation.org, Andrew.Cooper3@citrix.com, christina.schimpe@intel.com, david@redhat.com, debug@rivosinc.com, szabolcs.nagy@arm.com, torvalds@linux-foundation.org, Yu-cheng Yu , Pengfei Xu Subject: Re: [PATCH v9 16/42] mm: Add guard pages around a shadow stack. Message-ID: <6e2cd47f-f541-4a94-87f8-79204144fc8d@sirena.org.uk> References: <20230613001108.3040476-1-rick.p.edgecombe@intel.com> <20230613001108.3040476-17-rick.p.edgecombe@intel.com> MIME-Version: 1.0 Content-Type: multipart/signed; micalg=pgp-sha512; protocol="application/pgp-signature"; boundary="vtj6G0y/iCDsSROv" Content-Disposition: inline In-Reply-To: <20230613001108.3040476-17-rick.p.edgecombe@intel.com> X-Cookie: You are false data. Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org --vtj6G0y/iCDsSROv Content-Type: text/plain; charset=us-ascii Content-Disposition: inline On Mon, Jun 12, 2023 at 05:10:42PM -0700, Rick Edgecombe wrote: > The x86 Control-flow Enforcement Technology (CET) feature includes a new > type of memory called shadow stack. This shadow stack memory has some > unusual properties, which requires some core mm changes to function > properly. Reviewed-by: Mark Brown --vtj6G0y/iCDsSROv Content-Type: application/pgp-signature; name="signature.asc" -----BEGIN PGP SIGNATURE----- iQEzBAABCgAdFiEEreZoqmdXGLWf4p/qJNaLcl1Uh9AFAmSKTnsACgkQJNaLcl1U h9CzQQf+PdMiX9VT9eldMSx+qFLvi4hp6EiOa28TOPpP8QZF5bcajoksvMbUkcbb gExx3xen7iFsntlX0l5r+UPsRz2CyKJz/fxmINrDCb1hqMfNVe96DRfuGgeOY8jh MvmdWEzlta5AvmXAS9FhfMHscsbTJY3gZI4UHPrA2utcPHxqvi5fAjpLR1k/mIW6 gEyaNn/fOdNDsKp4SGpK5y+QpErsKT0MKFRkjI7wqgksLWthdtVKCVZu5rErCh9l Gtaiw+fFOI844jDoRBfzMyC01XmM0MSNMa/oARvenJ7VbE987k/Wr43yhXeUv8uC CELrSSB6sp2FNqnFX7cMVEwMKcGe9w== =ND6N -----END PGP SIGNATURE----- --vtj6G0y/iCDsSROv--