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 73C6EE77188 for ; Thu, 2 Jan 2025 16:05:38 +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=LJF25jE6DtDOeZGkVrlPrhYYPvFE2Xx4gNNpwTEh6NM=; b=PZ1FlGmoC7+/xnFfeOWsXHLo6i UhLudQvq4m4/5pf8dJ9tIKlG5+tHCGhk9nblO9axiHIKKgdKzmJY/QilWK+PRYV8kXgQ4JN1Yjr9T 9usdlCdnHdo9lYU3GnfO8j5wRfJAzVGLyErqKjzCuDAEewTY+jKj+deuC+Pp5BNHW6MaLSAsqnDYs 1AHPAyPaP2CtSPxPbdRLhBshBVyy1yvbS6Zfb7S8p/pFyg9YTU/MVwmwYKEkNbjNGOTqqAGPJTcVW QzI4xXJ/qYJ9rOoIaVAomvI7MZNBYYcIgtOuOtVmNcRuipylnhojQVErAqmji99rdA4JO0AQ+q75+ dLLpP+qg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tTNhO-0000000An9L-0CzF; Thu, 02 Jan 2025 16:05:26 +0000 Received: from nyc.source.kernel.org ([147.75.193.91]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tTNg6-0000000AmqH-1fgs for linux-arm-kernel@lists.infradead.org; Thu, 02 Jan 2025 16:04:07 +0000 Received: from smtp.kernel.org (transwarp.subspace.kernel.org [100.75.92.58]) by nyc.source.kernel.org (Postfix) with ESMTP id 1A31DA411C0; Thu, 2 Jan 2025 16:02:16 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id B8DD2C4CED0; Thu, 2 Jan 2025 16:04:04 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1735833845; bh=xwig0kXXTHkd3gdQwpBR4SSkQ+n/TFnuZZXhFs5e0+s=; h=Date:From:To:Cc:Subject:References:In-Reply-To:From; b=OOVXCxUyMHGJzaL9r9qX4oZNqTL2oLMAXt2KYg5hsFBaFG381U8IkfKCpBm66ERyy lFqQ/CvMKK9hpJlgC2ksQhSYDKvCbgjBXaf1cNdlNOWVmO5wUpuxnggkLEkiv+NErb n5nV1uJiQPQAPm18mWtuD/Tl3gBVlCx5wkd3kh1T9yVSIh6RQRDVXBU7wFJg91WDYP jOoCiA3rd6iw7j4jGQRW7j6IdZYBbwDCF63D/WX5xioGF/XL5LRryAme83I5ghz6WB Lo35stosQ+u5FiYOvhZ8IhMJWATCusH5Md/cl5/mYsTVamBpaijcclLhE5/Mnsp/vo /SX/6r/7vQcww== Date: Thu, 2 Jan 2025 10:04:02 -0600 From: Rob Herring To: Anshuman Khandual Cc: linux-arm-kernel@lists.infradead.org, Catalin Marinas , Will Deacon , Marc Zyngier , Ryan Roberts , Mark Rutland , Oliver Upton , Jonathan Corbet , Eric Auger , kvmarm@lists.linux.dev, linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org Subject: Re: [PATCH 0/7] arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9 Message-ID: <20250102160402.GB3990035-robh@kernel.org> References: <20241220072240.1003352-1-anshuman.khandual@arm.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20241220072240.1003352-1-anshuman.khandual@arm.com> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250102_080406_522283_219AEDAC X-CRM114-Status: GOOD ( 17.13 ) 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, Dec 20, 2024 at 12:52:33PM +0530, Anshuman Khandual wrote: > This series adds fine grained trap control in EL2 required for FEAT_PMUv3p9 > registers like PMICNTR_EL0, PMICFILTR_EL0, and PMUACR_EL1 which are already > being used in the kernel. This is required to prevent their EL1 access trap > into EL2. > > PMZR_EL0 register trap control i.e HDFGWTR2_EL2.nPMZR_EL0 remains unchanged > for now as it does not get accessed in the kernel, and there is no plan for > its access from user space. > > I have taken the liberty to pick up all the review tags for patches related > to tools sysreg update from the KVM FGT2 V2 patch series posted earlier. > > https://lore.kernel.org/all/20241210055311.780688-1-anshuman.khandual@arm.com/ > > Rob had earler mentioned about FEAT_FGT2 based trap control requirement for > FEAT_PMUv3p9 registers that are currently being used in kernel. The context > can be found here. > > https://lore.kernel.org/all/20241216234251.GA629562-robh@kernel.org/ > > This series is based on v6.13-rc3 > > Cc: Catalin Marinas > Cc: Will Deacon > Cc: Marc Zyngier > Cc: Ryan Roberts > Cc: Mark Rutland > Cc: Mark Brown > Cc: Rob Herring > Cc: Oliver Upton > Cc: Jonathan Corbet > Cc: Eric Auger > Cc: kvmarm@lists.linux.dev > Cc: linux-doc@vger.kernel.org > Cc: linux-kernel@vger.kernel.org > Cc: linux-arm-kernel@lists.infradead.org > > Anshuman Khandual (7): > arm64/sysreg: Update register fields for ID_AA64MMFR0_EL1 > arm64/sysreg: Add register fields for HDFGRTR2_EL2 > arm64/sysreg: Add register fields for HDFGWTR2_EL2 > arm64/sysreg: Add register fields for HFGITR2_EL2 > arm64/sysreg: Add register fields for HFGRTR2_EL2 > arm64/sysreg: Add register fields for HFGWTR2_EL2 > arm64/boot: Enable EL2 requirements for FEAT_PMUv3p9 In case it is not clear, this series should be applied to 6.13 as the 2 PMUv3p9 features already landed in 6.13 (per counter EL0 control) and 6.12 (ICNTR). Rob