From nobody Sun Oct 5 12:48:07 2025 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 4DFA0248191 for ; Tue, 5 Aug 2025 08:14:04 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=217.140.110.172 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754381645; cv=none; b=JK7pi82Jtkdgu3Xcct9ZPepzTpPvnHKtmPvR1mk/DgV9k25/JBTgJYe7/xOLafb82Ki0mHtCrdt9lBbLPjS2/kR9UCzCdvFMUi9H7jfzg/sq1h3f7DsfAbG+7Zc5aEnm93CEOIwH9hhjsuNqqRMkKKGtrLXClTxpkCYTDuVerFs= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1754381645; c=relaxed/simple; bh=Ap7m0TmJAeIC8BUf0uKvOn3bF3fuejzBm0DFp7CzvrY=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=DBsEsTJF64B+jUzK1I+ptUaupZPCMhaY72WJFxQzzOxKwt94M6DqmOqxk/GsX+qg4XOsGtUUquk5T/Kv3d/1CpeG/b/tzH3aT5ocxuSNGjMLsf/i8VFsas2Ayj90LRRQAGlEgl+ZCv+PSRJK2OKq/Bgsby9tiX3nQTT2TuiCxHQ= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com; spf=pass smtp.mailfrom=arm.com; arc=none smtp.client-ip=217.140.110.172 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=arm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=arm.com 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 E12B51424; Tue, 5 Aug 2025 01:13:55 -0700 (PDT) Received: from e125769.cambridge.arm.com (e125769.cambridge.arm.com [10.1.196.27]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 94A2F3F673; Tue, 5 Aug 2025 01:14:02 -0700 (PDT) From: Ryan Roberts To: Yang Shi , will@kernel.org, catalin.marinas@arm.com, akpm@linux-foundation.org, Miko.Lenczewski@arm.com, dev.jain@arm.com, scott@os.amperecomputing.com, cl@gentwo.org Cc: Ryan Roberts , linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [RFC PATCH v6 2/4] arm64: cpufeature: add AmpereOne to BBML2 allow list Date: Tue, 5 Aug 2025 09:13:47 +0100 Message-ID: <20250805081350.3854670-3-ryan.roberts@arm.com> X-Mailer: git-send-email 2.43.0 In-Reply-To: <20250805081350.3854670-1-ryan.roberts@arm.com> References: <20250805081350.3854670-1-ryan.roberts@arm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" From: Yang Shi AmpereOne supports BBML2 without conflict abort, add to the allow list. Signed-off-by: Yang Shi Reviewed-by: Christoph Lameter (Ampere) Reviewed-by: Ryan Roberts --- arch/arm64/kernel/cpufeature.c | 2 ++ 1 file changed, 2 insertions(+) diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c index 9ad065f15f1d..b93f4ee57176 100644 --- a/arch/arm64/kernel/cpufeature.c +++ b/arch/arm64/kernel/cpufeature.c @@ -2234,6 +2234,8 @@ static bool has_bbml2_noabort(const struct arm64_cpu_= capabilities *caps, int sco static const struct midr_range supports_bbml2_noabort_list[] =3D { MIDR_REV_RANGE(MIDR_CORTEX_X4, 0, 3, 0xf), MIDR_REV_RANGE(MIDR_NEOVERSE_V3, 0, 2, 0xf), + MIDR_ALL_VERSIONS(MIDR_AMPERE1), + MIDR_ALL_VERSIONS(MIDR_AMPERE1A), {} }; =20 --=20 2.43.0