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 227CBC27C4F for ; Fri, 21 Jun 2024 17:03:48 +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=iM1Kwk+3ITf/UQQSbj8sJhEa0dmfB8zdquB7un3844o=; b=neAB+y9swuLpTqvIMjAU4H0MLO SbElCy32L2gTXSwm8XSN9D1vYdKx4r3K+p8tAhkKnlDh21VgasTtF3fDxTRMe9NhWFpBOxzP4/aEq CunM6mHuoHvZ7frDiVw5Gn/QG4rMoBGKleK5k7PqJGG5pKy0UgGWrZKn/fT0hsfI2qvfXk0MyyRLm Gp5eUj4XF7BoWlL8loRm/HmKqbDoILxC3mTP30TuH85kevvgu5jZUus8a5J9gAnYgux1AU0ih/BKZ s8/+kQcG4wKjKkxVohkYO+A9iB0dzjSC2E9KfsAipHpyTLf1rn11hvc5tSiCUWRpV0VYhfUhMY/TE xUtpdK0A==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.97.1 #2 (Red Hat Linux)) id 1sKhfm-0000000A35M-2eTM; Fri, 21 Jun 2024 17:03:38 +0000 Received: from sin.source.kernel.org ([2604:1380:40e1:4800::1]) by bombadil.infradead.org with esmtps (Exim 4.97.1 #2 (Red Hat Linux)) id 1sKhfi-0000000A335-0TBD for linux-arm-kernel@lists.infradead.org; Fri, 21 Jun 2024 17:03:35 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by sin.source.kernel.org (Postfix) with ESMTP id 1F5D9CE2F0A; Fri, 21 Jun 2024 17:03:32 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id D240BC3277B; Fri, 21 Jun 2024 17:03:26 +0000 (UTC) Date: Fri, 21 Jun 2024 18:03:24 +0100 From: Catalin Marinas To: Joey Gouly Cc: linux-arm-kernel@lists.infradead.org, akpm@linux-foundation.org, aneesh.kumar@kernel.org, aneesh.kumar@linux.ibm.com, bp@alien8.de, broonie@kernel.org, christophe.leroy@csgroup.eu, dave.hansen@linux.intel.com, hpa@zytor.com, linux-fsdevel@vger.kernel.org, linux-mm@kvack.org, linuxppc-dev@lists.ozlabs.org, maz@kernel.org, mingo@redhat.com, mpe@ellerman.id.au, naveen.n.rao@linux.ibm.com, npiggin@gmail.com, oliver.upton@linux.dev, shuah@kernel.org, szabolcs.nagy@arm.com, tglx@linutronix.de, will@kernel.org, x86@kernel.org, kvmarm@lists.linux.dev Subject: Re: [PATCH v4 06/29] arm64: context switch POR_EL0 register Message-ID: References: <20240503130147.1154804-1-joey.gouly@arm.com> <20240503130147.1154804-7-joey.gouly@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240503130147.1154804-7-joey.gouly@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20240621_100334_453122_D1817C4E X-CRM114-Status: UNSURE ( 8.35 ) 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 Fri, May 03, 2024 at 02:01:24PM +0100, Joey Gouly wrote: > POR_EL0 is a register that can be modified by userspace directly, > so it must be context switched. > > Signed-off-by: Joey Gouly > Cc: Catalin Marinas > Cc: Will Deacon Reviewed-by: Catalin Marinas