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 0FEE2CA5FB3 for ; Thu, 1 Oct 2026 09:01:09 +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:Content-Transfer-Encoding: MIME-Version:Message-ID:Date:Subject:Cc:To:From:Reply-To:Content-Type: Content-ID:Content-Description:Resent-Date:Resent-From:Resent-Sender: Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References:List-Owner; bh=rZ8YozvA1aqK0+uWNxtjqeaSWQiq07BXRM1asp+BzcA=; b=JWGAFoyMB+O62TiUdnrUE2uR/h xaIRP4QOUx7UeiVx0rnZd4v9RXEi8lT+xYRfQv9a54X9vGNPvWs0wu9J9oshaFBehc414nNTIAW2t FaRax5qVkzKn92DNng1Fr9fog/9/p1vBiOXH/epim/PdkNtv9UgNN9FB7v1aRmmP8pO3tTAodLE6c iUBKkku7YVjl/NPUI+Ru5r7fx9l7SyYHcqBhV/I/DSZ4hWzHhpxftiwpAd8sfQoxNVnV3MUfsoyxq XiFGZo1mn3w1FR+4p8+68it3qHHclHO4P6USykzjO4AZMxX4tKW1uy0xox0lQc5QodIrykKeYYDj/ YOwxolOQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCCf0-00000008IOw-1cul; Thu, 01 Oct 2026 09:01:02 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.99.1 #2 (Red Hat Linux)) id 1xCCex-00000008INp-3eN8 for linux-arm-kernel@lists.infradead.org; Thu, 01 Oct 2026 09:01:00 +0000 Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id A7310497; Thu, 1 Oct 2026 02:00:55 -0700 (PDT) Received: from e143943.arm.com (unknown [10.57.77.101]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPA id CFE413F85F; Thu, 1 Oct 2026 02:00:56 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1790845259; bh=KpFLlIbgFKmtwym5+idRmX6jfxg0rnNaBCB2tjQsIU0=; h=From:To:Cc:Subject:Date:From; b=GJhVN5vM/OElXdPKTUMu/gwzOf/WZY9CLVYrjyjQRbxmYyJqfDvbcYQ6uYy5b6MJr Dhau8RyM4IeTF7B8bPhMJUHzF/8iAkHJAOt9iIOI271aowTWPnUMQH8gvwAGsbBrD7 8YPuihgLShhiJzC2slcyRbzZIEZwsJzHRFzNYQXk= From: Beata Michalska To: linux-arm-kernel@lists.infradead.org Cc: Vladimir.Murzin@arm.com, catalin.marinas@arm.com, will@kernel.org, suzuki.poulose@arm.com, James.Morse@arm.com, xuewen.yan94@gmail.com, seanwang1@lenovo.com, linux-kernel@vger.kernel.org Subject: [PATCH v4 0/2] arm64: errata: Share broken AMU constant-counter handling Date: Thu, 1 Oct 2026 11:00:30 +0200 Message-ID: <20261001090050.3849551-1-beata.michalska@arm.com> X-Mailer: git-send-email 2.43.0 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261001_020059_947026_28B57CF8 X-CRM114-Status: UNSURE ( 7.36 ) 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 This series factors out the existing Cortex-A510 erratum 2457168 AMU constant counter workaround into a generic broken AMU constant-counter capability, then wires Cortex-A725 erratum 3821522 into the same handling. --- v4: - use midr range instead of multi cap list - reword comment to be more generic v3: - splitted the commit and droped changes for cpucap_is_possible --- Beata Michalska (2): arm64: errata: Factor out broken AMU const counter cap arm64: errata: Add Cortex-A725 erratum 3821522 workaround Documentation/arch/arm64/silicon-errata.rst | 2 ++ arch/arm64/Kconfig | 30 +++++++++++++++++++++ arch/arm64/kernel/cpu_errata.c | 24 ++++++++++++----- arch/arm64/kernel/cpufeature.c | 2 +- arch/arm64/kernel/topology.c | 16 ++++++----- arch/arm64/tools/cpucaps | 2 +- 6 files changed, 61 insertions(+), 15 deletions(-) -- 2.43.0