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 27D80EE49A3 for ; Tue, 22 Aug 2023 16:41:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:In-Reply-To:MIME-Version:References: Message-ID:Subject:Cc:To:From:Date:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=ryhQauVVCI/SiiZe1kD8qh2DQPYGm/D6hW2hbKcWPpg=; b=uRuiia5kl36YpF Nokvvoo9q/YkgYCZDuHO9XpAZCREww88VT7H0r0lT/rcptbe8sNA1Ns80nhxvK1CpnjPWlu1ZUSjz iix8lgnrLmmoVs3oeCJFYzGCjBcYGcMLhNUoHC5LuFqLKSpjqUcsavstG6oQeJ6e5/2erhwDpsMoV nvpdPe03qOu4yaXjKS1Z54XwUTvJMFB15bVDPi2pXvoSrdwyQv7Ug0SBOrOw/5YwQEbspwMNXAneg bv4WOtatZTJVUaORsYbdR1Wi01mHJiNjtIpJ+dCrHYfTeA4mXZWfmFUaz0mX3Vh2v90Tm2CIlh+Wa wdkiPlgUEnl1hpkXWoDA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.96 #2 (Red Hat Linux)) id 1qYUR9-00GW5B-1w; Tue, 22 Aug 2023 16:40:59 +0000 Received: from dfw.source.kernel.org ([2604:1380:4641:c500::1]) by bombadil.infradead.org with esmtps (Exim 4.96 #2 (Red Hat Linux)) id 1qYUR6-00GW3b-1H; Tue, 22 Aug 2023 16:40:57 +0000 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 D205B60D3A; Tue, 22 Aug 2023 16:40:55 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6B0B8C433C7; Tue, 22 Aug 2023 16:40:42 +0000 (UTC) Date: Tue, 22 Aug 2023 17:40:38 +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 , 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: 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-Disposition: inline In-Reply-To: <9c722954-8f30-425e-a0a4-6edad463620f@sirena.org.uk> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230822_094056_481046_4B4E3EB9 X-CRM114-Status: GOOD ( 14.61 ) X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-riscv" Errors-To: linux-riscv-bounces+linux-riscv=archiver.kernel.org@lists.infradead.org On Fri, Aug 18, 2023 at 06:08:52PM +0100, Mark Brown wrote: > On Fri, Aug 11, 2023 at 05:38:24PM +0100, Catalin Marinas wrote: > > > Given that we won't have an mmap(PROT_SHADOW_STACK), are we going to > > have restrictions on mprotect()? E.g. it would be useful to reject a > > PROT_EXEC on the shadow stack. > > 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. -- Catalin _______________________________________________ linux-riscv mailing list linux-riscv@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-riscv