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 bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 45DA5C3DA4A for ; Fri, 16 Aug 2024 11:11:12 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=gBG2hIEq5Wt5Ylh7KbDV5QLuA8N7FgzpylK+Z//BGGU=; b=zXJCAEoQ9umqG7mhjbBpTNuNPQ qg3yyDRcJXf/HHHCztbKby+ltapkXH4a0vvnvgST/oz0EuL+xtNo1h9uoIfiG9cAA8i9R1k5znIQV D9+2BJ4A0u/fhONSCG3C0nhVOCxsk+e9VmW/XghtMx11Px9gd/lIzJ3bYl2C7bSIK7r9/fnbEezzH aLanV5GFNznryijTx6Zo+mjy6J6DccGYreJBXhvFbzkDc4K7GIKFC+RvF15lMupzIFN6faCDbbDlZ bWNDoUWdiTFPsTB6/ZPUc0OF2RiQFXonzVHxMQt9iCk0PMYyAsotN0YlMLefCZ9N9jbo/gyVFJz4W tM6zmB6A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1seurE-0000000CiTY-2m4A; Fri, 16 Aug 2024 11:11:00 +0000 Received: from dfw.source.kernel.org ([139.178.84.217]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1seuqW-0000000CiEc-446I; Fri, 16 Aug 2024 11:10:18 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by dfw.source.kernel.org (Postfix) with ESMTP id A354161DE3; Fri, 16 Aug 2024 11:10:15 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id CC33BC32782; Fri, 16 Aug 2024 11:10:09 +0000 (UTC) Date: Fri, 16 Aug 2024 12:10:07 +0100 From: Catalin Marinas To: Mark Brown Cc: Will Deacon , Jonathan Corbet , Andrew Morton , Marc Zyngier , Oliver Upton , James Morse , Suzuki K Poulose , Arnd Bergmann , Oleg Nesterov , Eric Biederman , Shuah Khan , "Rick P. Edgecombe" , Deepak Gupta , Ard Biesheuvel , Szabolcs Nagy , Kees Cook , "H.J. Lu" , Paul Walmsley , Palmer Dabbelt , Albert Ou , Florian Weimer , Christian Brauner , Thiago Jung Bauermann , Ross Burton , 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 v10 06/40] arm64/sysreg: Add definitions for architected GCS caps Message-ID: References: <20240801-arm64-gcs-v10-0-699e2bd2190b@kernel.org> <20240801-arm64-gcs-v10-6-699e2bd2190b@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240801-arm64-gcs-v10-6-699e2bd2190b@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240816_041017_092338_E51A1AC0 X-CRM114-Status: UNSURE ( 9.39 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Thu, Aug 01, 2024 at 01:06:33PM +0100, Mark Brown wrote: > The architecture defines a format for guarded control stack caps, used > to mark the top of an unused GCS in order to limit the potential for > exploitation via stack switching. Add definitions associated with these. > > Reviewed-by: Thiago Jung Bauermann > Signed-off-by: Mark Brown Acked-by: Catalin Marinas