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 D13D3E77188 for ; Fri, 10 Jan 2025 14:37:44 +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=rnAk52EaCGTl8IYafK7WLnFFR9tRDqukObZH0f57g0Q=; b=oiKoLp3GX3iN2+AjwcTata3lrT NwwA3bRRqeJiMJpEP2IWmnPhPG/97XekmLXzbVzM9wXwBBpex4Kl7dxyZ/LeDIk4QQ3MooYD9lmI5 ChHNnxohdxkegi966+zbp1bpGinqLPGCnVWBL40KjX0RRrEp252k4OUmtfHGZzCtBs0WrPwkd2CQD LjXa5COZHGyXBfLOhoH8LDQoMvVfWk5jE7sp9pKYASR+vUabcuqXIDuHTDYq3eoYkke1t8HxhpiTC 86uVok7Riq8khGnPaV4KSEYQp0LbE1rylx4hbkcK0GuPepnnzAR+JR83Bp7XmlTdEKP/exUHbnC7n Xl24BIkQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tWG8l-0000000Fek8-13cD; Fri, 10 Jan 2025 14:37:35 +0000 Received: from nyc.source.kernel.org ([2604:1380:45d1:ec00::3]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tWErg-0000000FRN1-3NK2 for linux-arm-kernel@lists.infradead.org; Fri, 10 Jan 2025 13:15:53 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 52F14A41F4E; Fri, 10 Jan 2025 13:14:03 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 1FEFEC4CED6; Fri, 10 Jan 2025 13:15:48 +0000 (UTC) Date: Fri, 10 Jan 2025 13:15:46 +0000 From: Catalin Marinas To: "Aneesh Kumar K.V (Arm)" Cc: linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, kvmarm@lists.linux.dev, Suzuki K Poulose , Steven Price , Will Deacon , Marc Zyngier , Mark Rutland , Oliver Upton , Joey Gouly , Zenghui Yu Subject: Re: [PATCH v2 3/7] arm64: cpufeature: add Allocation Tag Access Permission (MTE_PERM) feature Message-ID: References: <20250110110023.2963795-1-aneesh.kumar@kernel.org> <20250110110023.2963795-4-aneesh.kumar@kernel.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250110110023.2963795-4-aneesh.kumar@kernel.org> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250110_051552_906836_3D4719E4 X-CRM114-Status: UNSURE ( 9.55 ) 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, Jan 10, 2025 at 04:30:19PM +0530, Aneesh Kumar K.V (Arm) wrote: > This indicates if the system supports MTE_PERM. This will be used by KVM > for stage 2 mapping. This is a CPUCAP_SYSTEM feature because if we enable > the feature all cpus must have it. > > Cc: Catalin Marinas > Cc: Will Deacon > Signed-off-by: Aneesh Kumar K.V (Arm) Reviewed-by: Catalin Marinas