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]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 0D0DBFD45EB for ; Wed, 25 Feb 2026 20:12:18 +0000 (UTC) Received: by kanga.kvack.org (Postfix) id 703DB6B008A; Wed, 25 Feb 2026 15:12:17 -0500 (EST) Received: by kanga.kvack.org (Postfix, from userid 40) id 6AE026B008C; Wed, 25 Feb 2026 15:12:17 -0500 (EST) X-Delivered-To: int-list-linux-mm@kvack.org Received: by kanga.kvack.org (Postfix, from userid 63042) id 5C7A16B0092; Wed, 25 Feb 2026 15:12:17 -0500 (EST) X-Delivered-To: linux-mm@kvack.org Received: from relay.hostedemail.com (smtprelay0017.hostedemail.com [216.40.44.17]) by kanga.kvack.org (Postfix) with ESMTP id 49BDF6B008A for ; Wed, 25 Feb 2026 15:12:17 -0500 (EST) Received: from smtpin04.hostedemail.com (a10.router.float.18 [10.200.18.1]) by unirelay01.hostedemail.com (Postfix) with ESMTP id E8DD01C9A6 for ; Wed, 25 Feb 2026 20:12:16 +0000 (UTC) X-FDA: 84484075872.04.F666769 Received: from tor.source.kernel.org (tor.source.kernel.org [172.105.4.254]) by imf14.hostedemail.com (Postfix) with ESMTP id 550F010000F for ; Wed, 25 Feb 2026 20:12:15 +0000 (UTC) Authentication-Results: imf14.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=g3ryCiLc; spf=pass (imf14.hostedemail.com: domain of rppt@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Seal: i=1; s=arc-20220608; d=hostedemail.com; t=1772050335; a=rsa-sha256; cv=none; b=Th0FQ781IScetUPzj5vdpEZQu+cqybXDM9WM290WUAwa8OMGQTPXmhsII6u6w31ZkccPbE i1VVB1xVq5q2WSVnG+BjMbmtr5FQQFszIdTBz0Blv6voJbatFLEish8cRQIU9h1NHcZ/rL bZ87kRwhqzuEIyz4WbgfkeXEOv/2wFk= ARC-Authentication-Results: i=1; imf14.hostedemail.com; dkim=pass header.d=kernel.org header.s=k20201202 header.b=g3ryCiLc; spf=pass (imf14.hostedemail.com: domain of rppt@kernel.org designates 172.105.4.254 as permitted sender) smtp.mailfrom=rppt@kernel.org; dmarc=pass (policy=quarantine) header.from=kernel.org ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=hostedemail.com; s=arc-20220608; t=1772050335; 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=T9q4+ySLo4ROExE1JyfWwBdelFnFYshX8PHSjHp2QTY=; b=MVWlqWE2BSQKUcD61S/NjLIHfzjJrMqAgLr8mWNcmjFSZDp4JIgH4c04ixwPl/aceLU610 K+6rFn45YLfv8lJz3TItOoLJ1+/JOF8xp3fLG2tJlzzmdgLhz0xwacKrFLpXSIdOyx7pxu 8x6olxW2uoLBcPTysSo6mH6ER7A96HU= Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by tor.source.kernel.org (Postfix) with ESMTP id 8A64960053; Wed, 25 Feb 2026 20:12:14 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 8D57AC116D0; Wed, 25 Feb 2026 20:12:08 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1772050334; bh=PjnaX0nrKvXjwoSWqMyc2RZCBMHlMtQJ84VIGiaaCKQ=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=g3ryCiLcJGsyHMU46ADgUo9zZyQbXK8ByyDOF6ZcP79iIzgOgLMp8mEQdmmUcqZf5 Pxf++y4Y5IDWpJZbdark3vMfgh0qpC6jyr0Cs59TzUh+PhVJVr7yjO9PHAHFXkVuB+ aII7SnpUP3wUPYgewdTvtioSYsECISw4h5NkzOYRc9FWs1BhDAuC8lA+bmmvWFVGjZ eg1b1L7gNZAOmxN0ZP2giZPs0eltQWZJZ1T2pzdz4tBSjGGKqRHqmfl3skOpCffwj2 kIhQM6Il91b2LvNC+n/LzZHXloJl3DVXyOn1di3ZKkEPuxg7ZgbHQCLs1QBl6Jktj/ LHkOZijjnfmWw== Date: Wed, 25 Feb 2026 22:12:05 +0200 From: Mike Rapoport To: Catalin Marinas Cc: Andrew Morton , David Hildenbrand , Mark Brown , Deepak Gupta , Rick Edgecombe , Will Deacon , Paul Walmsley , Palmer Dabbelt , Albert Ou , Alexandre Ghiti , Thomas Gleixner , Ingo Molnar , Borislav Petkov , Dave Hansen , "H. Peter Anvin" , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org, linux-riscv@lists.infradead.org, linux-mm@kvack.org Subject: Re: [PATCH v2 0/5] mm: arch/shstk: Common shadow stack mapping helper and VM_NOHUGEPAGE Message-ID: References: <20260225161404.3157851-1-catalin.marinas@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260225161404.3157851-1-catalin.marinas@arm.com> X-Rspamd-Queue-Id: 550F010000F X-Stat-Signature: jkwzc4syounz7ww5uc3m1rnsibyfpt99 X-Rspam-User: X-Rspamd-Server: rspam04 X-HE-Tag: 1772050335-612670 X-HE-Meta: U2FsdGVkX1+RSzLDuN22YEc03oLyb4DUI3HIXIHyfUmYiR2qQ7SsnsZWLAggar7ESotN/yne/opoijt1P+4TPyZYafvFcF0/wvGGSJXgBrLtgmrVUzJShiulGUWKTjBzgB4J7GpXTJEVSLOIdUsaTqxNrXMlnd3zo9hRgBfSU3+yqcQQqYGUYTuNU08Q7e8rbmOsID8kZFk3hGvu8v1FMnrRVj7C3xJuOj3A/NqEk3/OcoL3s21kNQv1Nm++GX/hrGH2hra6AtbFQRJLuIbjNYNwLXrx8cjNpJNrHmqQgPexfznT9gqxed6OtCfsz9XS1TpkXRI2h0w7TJowS+V82CJwAnmm+bbGKqv+OLH/ybC1cTquEmFW0rcSyhQeZzFGc8F01Wdc2o2jIt1ildNFSvAbjpDNkWk8t+aD3SOHS7w5CfRm07dB1uqlrLZVTOIzcFctyjbE4rNP1Iy5TYwQXPQuHu/IpJRE2AAkJkFO1YMOZzZIaD9MdK+EyFTUtyJWW8a63h/vdNWnlynip+VrYHvpopzYdDWCE2goFCqMYfiReoPRDeDJDKMmkBExx125NcTTBJQW9Eiszr5ZMgZXHrfCgjrPcR0H3MC2cFqfRmx+m0lORMoOsqop8kKIjcXyV3uGLQqayVbgMObGe3dWQNZofE8sTvtWaxIE4rC8PfkJQrv4WPqxm0tOPcUJxs+bZniGn1ZhQJpTyV9WDasMYZ4kRsObjppVDaKS4xFkcQKj4UarBN8MNJykXj89nN1xHdNDgxlz8D7d2B+o+8TDLTgdfFiy8J5daNr8vf1qlCPK8D32stTsh8txiyOIF/CDxcRCKLRHOokmGN2UW4W+3Nerpzgcxh2t2KgoiMzISyr1sv0nIAt71hceqMF89OjWHmKbEZVrPzrW+SBsnjMtvfbGVRAA2XgMut/SF7SrqEzVujBfD0tUDklXOMR49Cj4DvHmP0KrQPmxZxc4dEd 85qpZG2Q qi4IGw/+FbWPqLBNr3CYr+QtCxQ+Tgbh1iWqbg0bAVQ9fFMoRNKsp+TUBjs0jZAVk8VuDcXYnPHZxhilPlKGxNKn73cKp6wSIE+Hs6MsHmJXoa9GvFipDimksuYvy8DHyuCjdfJrj/eHmqPDnkdvmNsrfZzZHOyhgHcKXuTKt9bommW6UB+8xxcmm+BJ54cWg/YSWjyNRKUiyYX+5B8nRWCnV8/ejg14clm24OtO6K4otU8s0XWmJKDU4PCfdWYhYjb4+6sc8Ci/Qya/1+RCLkyUNKFB5R9sbl8hhtmWG2txbt5EHurePjtPw6Px7Y+vi9YCYVKDf+/AD0r7uKozwIJRCPJSjqid6dAVFdkjTAEfdCCxo2pwB7RhniBlc0kYw3aBg Sender: owner-linux-mm@kvack.org Precedence: bulk X-Loop: owner-majordomo@kvack.org List-ID: List-Subscribe: List-Unsubscribe: On Wed, Feb 25, 2026 at 04:13:57PM +0000, Catalin Marinas wrote: > This is v2 of the series extracting the common shadow stack mmap into a > separate helper for arm64, riscv and x86. Thanks for the review. > > Andrew, if you are happy with this, I think taking the patches through > the mm tree makes most sense. > > Minor changes since v1: > > - Removed #ifdef from the helper function declaration > - Used two tabs for the alignment of multi-line function arguments > - Added "There is no functional change" to the arch patches log > - Collected ack/review/test tags > > v1: > > https://lore.kernel.org/r/20260224175800.2500729-1-catalin.marinas@arm.com > > Catalin Marinas (5): > mm: Introduce vm_mmap_shadow_stack() as a helper for VM_SHADOW_STACK > mappings > arm64: gcs: Use the new common vm_mmap_shadow_stack() helper > riscv: shstk: Use the new common vm_mmap_shadow_stack() helper > x86: shstk: Use the new common vm_mmap_shadow_stack() helper > mm: Do not map the shadow stack as THP Reviewed-by: Mike Rapoport (Microsoft) > arch/arm64/mm/gcs.c | 14 +------------- > arch/riscv/kernel/usercfi.c | 12 +----------- > arch/x86/kernel/shstk.c | 12 ++---------- > include/linux/mm.h | 2 ++ > mm/util.c | 29 +++++++++++++++++++++++++++++ > 5 files changed, 35 insertions(+), 34 deletions(-) > > -- Sincerely yours, Mike.