From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (prime256v1) server-digest SHA256) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 1F7E3606A88C for ; Fri, 13 Nov 2026 14:50:51 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.a=rsa-sha256 header.s=bombadil.20210309 header.b=zDexWOIM; dkim=pass (1024-bit key) header.d=arm.com header.i=@arm.com header.a=rsa-sha256 header.s=foss header.b=ZN1+KxA8 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-Unsubscribe-Post:List-Owner; bh=c0zXVTsrbk174LmaYrVUL39Szcf/bPuLxQyvLhm2Mqw=; b=zDexWOIMAQoxSKuXFtkHdkCFbW PdpMN4Ivh7DbYO2+Au4egalui69f+Vdaq1xCgX37/nhYMtXQJwUX8IKhUf72+pz26X26uChPmmlM4 JZen4io59s3M1TV2EsD7AeywaGBuVxi0v9Ih7X4MFz7nMy1Ak/WGz+feqMv8wOiRcgi+ZCbyUpEL7 MIAYumUQjAABa8/f9PiW5H9mV1IZcfWdQsKjFWsxDItjWi0buAnoQFeq+BwnkfQuGlVwvt7wTSW6u G/V4jFZshJU3t3SHKT8P7SmoJ55xLKn2j8ByYOOtfI+7c1wzDnXawSu5XgAF71jETsTXuOEi2mpbK Q7a+sUrQ==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRsc1-0000000DE74-0Qem; Fri, 13 Nov 2026 14:50:45 +0000 Received: from foss.arm.com ([217.140.110.172]) by bombadil.infradead.org with esmtp (Exim 4.100.1 #2 (Red Hat Linux)) id 1xRsby-0000000DE4v-47sF for linux-arm-kernel@lists.infradead.org; Fri, 13 Nov 2026 14:50:44 +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 31CE9339; Fri, 13 Nov 2026 06:50:35 -0800 (PST) Received: from e144440.cambridge.arm.com (e144440.arm.com [10.2.199.104]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 0AB8C3F673; Fri, 13 Nov 2026 06:50:36 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=simple/simple; d=arm.com; s=foss; t=1794581438; bh=6ecGdQ4eT5YT+gG7gKfOdhj7cI+gAnAbiG7t+YQUvIg=; h=From:To:Cc:Subject:Date:From; b=ZN1+KxA868nGCeUJJ8j+cH9sszhajb4K3C6R4fAebiU6e7qjWSLAwUJ8NMjBcP/GP qiB9Z6rK2XUMsac/YTcEj6+WGjz/vnjA2w56A6DVpRZ8ueLdWVHimuyqe/W6xxrcO9 JKRSK0SmaOnL2BBhFj4lecjsHMel9oqIc54xHKts= From: Ryan Roberts To: Catalin Marinas , Will Deacon , Mark Rutland , Linu Cherian Cc: Ryan Roberts , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v1 0/6] arm64: BBML3 errata workarounds and cleanup Date: Fri, 13 Nov 2026 14:50:14 +0000 Message-ID: <20261113145022.2592454-1-ryan.roberts@arm.com> X-Mailer: git-send-email 2.43.0 X-Archived-By: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.9.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20261113_065043_186213_66B15CC9 X-CRM114-Status: UNSURE ( 8.76 ) X-CRM114-Notice: Please train this message. X-Spam-Score: -4.4 (----) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" X-Spam-Status: No, score=-13.9 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=4.0.1 X-Spam-Checker-Version: SpamAssassin 4.0.1 (2024-03-26) on aws-us-west-2-korg-listserv-alma10-1 Hi All, This series updates the BBML3 allow list following a review of Arm CPU errata and implementation support. The first two patches remove Neoverse-V3/AE and Cortex-X4: their latest SDENs show that revisions previously treated as unaffected still suffer from BBM-related livelock errata. These patches are intended for stable backporting. The remaining patches introduce default-enabled Kconfig options to track 10 BBML3 errata, and enable BBML3 for Cortex-A320, A520 and A720. The result is much more explicit about what CPUs are supported and what CPUs have errata preventing them from being opted-in. Applies on top of v7.4-rc2. Thanks, Ryan Ryan Roberts (6): arm64: cpufeature: Remove Neoverse-V3/AE from the BBML3 allow list arm64: cpufeature: Remove Cortex-X4 from the BBML3 allow list arm64: cputype: Add Cortex-A320 definitions arm64: cputype: Add C2-Ultra definitions arm64: cpufeature: Track BBML3 exclusions with erratum options arm64: cpufeature: Enable BBML3 on Cortex-A320, A520 and A720 Documentation/arch/arm64/silicon-errata.rst | 26 +++- arch/arm64/Kconfig | 163 ++++++++++++++++++++ arch/arm64/include/asm/cputype.h | 4 + arch/arm64/kernel/cpufeature.c | 43 +++++- 4 files changed, 230 insertions(+), 6 deletions(-) -- 2.43.0