From: Ryan Roberts <ryan.roberts@arm.com>
To: Yang Shi <yang@os.amperecomputing.com>,
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 <ryan.roberts@arm.com>,
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 [thread overview]
Message-ID: <20250805081350.3854670-3-ryan.roberts@arm.com> (raw)
In-Reply-To: <20250805081350.3854670-1-ryan.roberts@arm.com>
From: Yang Shi <yang@os.amperecomputing.com>
AmpereOne supports BBML2 without conflict abort, add to the allow list.
Signed-off-by: Yang Shi <yang@os.amperecomputing.com>
Reviewed-by: Christoph Lameter (Ampere) <cl@gentwo.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
---
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[] = {
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),
{}
};
--
2.43.0
next prev parent reply other threads:[~2025-08-05 8:14 UTC|newest]
Thread overview: 21+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-05 8:13 [RFC PATCH v6 0/4] arm64: support FEAT_BBM level 2 and large block mapping when rodata=full Ryan Roberts
2025-08-05 8:13 ` [RFC PATCH v6 1/4] arm64: Enable permission change on arm64 kernel block mappings Ryan Roberts
2025-08-28 16:26 ` Catalin Marinas
2025-08-29 9:23 ` Ryan Roberts
2025-08-05 8:13 ` Ryan Roberts [this message]
2025-08-28 16:29 ` [RFC PATCH v6 2/4] arm64: cpufeature: add AmpereOne to BBML2 allow list Catalin Marinas
2025-08-05 8:13 ` [RFC PATCH v6 3/4] arm64: mm: support large block mapping when rodata=full Ryan Roberts
2025-08-05 17:59 ` Yang Shi
2025-08-06 7:57 ` Ryan Roberts
2025-08-07 0:19 ` Yang Shi
2025-08-28 17:09 ` Catalin Marinas
2025-08-28 17:45 ` Ryan Roberts
2025-08-28 18:48 ` Catalin Marinas
2025-08-05 8:13 ` [RFC PATCH v6 4/4] arm64: mm: split linear mapping if BBML2 unsupported on secondary CPUs Ryan Roberts
2025-08-05 18:14 ` Yang Shi
2025-08-06 8:15 ` Ryan Roberts
2025-08-07 0:29 ` Yang Shi
2025-08-05 8:16 ` [RFC PATCH v6 0/4] arm64: support FEAT_BBM level 2 and large block mapping when rodata=full Ryan Roberts
2025-08-05 14:39 ` Catalin Marinas
2025-08-05 14:52 ` Ryan Roberts
2025-08-05 18:37 ` Yang Shi
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