From: Ryan Roberts <ryan.roberts@arm.com>
To: Catalin Marinas <catalin.marinas@arm.com>,
Will Deacon <will@kernel.org>,
Andrew Morton <akpm@linux-foundation.org>,
David Hildenbrand <david@redhat.com>,
Lorenzo Stoakes <lorenzo.stoakes@oracle.com>,
Yang Shi <yang@os.amperecomputing.com>,
Ard Biesheuvel <ardb@kernel.org>, Dev Jain <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, linux-mm@kvack.org
Subject: [PATCH v7 2/6] arm64: cpufeature: add AmpereOne to BBML2 allow list
Date: Fri, 29 Aug 2025 12:52:43 +0100 [thread overview]
Message-ID: <20250829115250.2395585-3-ryan.roberts@arm.com> (raw)
In-Reply-To: <20250829115250.2395585-1-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:[~2025-08-29 11:53 UTC|newest]
Thread overview: 53+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-08-29 11:52 [PATCH v7 0/6] arm64: support FEAT_BBM level 2 and large block mapping when rodata=full Ryan Roberts
2025-08-29 11:52 ` [PATCH v7 1/6] arm64: Enable permission change on arm64 kernel block mappings Ryan Roberts
2025-09-04 3:40 ` Jinjiang Tu
2025-09-04 11:06 ` Ryan Roberts
2025-09-04 11:49 ` Jinjiang Tu
2025-09-04 13:21 ` Ryan Roberts
2025-09-16 21:37 ` Yang Shi
2025-08-29 11:52 ` Ryan Roberts [this message]
2025-08-29 22:08 ` [PATCH v7 2/6] arm64: cpufeature: add AmpereOne to BBML2 allow list Yang Shi
2025-09-04 11:07 ` Ryan Roberts
2025-09-03 17:24 ` Catalin Marinas
2025-09-04 0:49 ` Yang Shi
2025-08-29 11:52 ` [PATCH v7 3/6] arm64: mm: support large block mapping when rodata=full Ryan Roberts
2025-09-03 19:15 ` Catalin Marinas
2025-09-04 0:52 ` Yang Shi
2025-09-04 11:09 ` Ryan Roberts
2025-09-04 11:15 ` Ryan Roberts
2025-09-04 14:57 ` Yang Shi
2025-08-29 11:52 ` [PATCH v7 4/6] arm64: mm: Optimize split_kernel_leaf_mapping() Ryan Roberts
2025-08-29 22:11 ` Yang Shi
2025-09-03 19:20 ` Catalin Marinas
2025-09-04 11:09 ` Ryan Roberts
2025-08-29 11:52 ` [PATCH v7 5/6] arm64: mm: split linear mapping if BBML2 unsupported on secondary CPUs Ryan Roberts
2025-09-04 16:59 ` Catalin Marinas
2025-09-04 17:54 ` Yang Shi
2025-09-08 15:25 ` Ryan Roberts
2025-08-29 11:52 ` [PATCH v7 6/6] arm64: mm: Optimize linear_map_split_to_ptes() Ryan Roberts
2025-08-29 22:27 ` Yang Shi
2025-09-04 11:10 ` Ryan Roberts
2025-09-04 14:58 ` Yang Shi
2025-09-04 17:00 ` Catalin Marinas
2025-09-01 5:04 ` [PATCH v7 0/6] arm64: support FEAT_BBM level 2 and large block mapping when rodata=full Dev Jain
2025-09-01 8:03 ` Ryan Roberts
2025-09-03 0:21 ` Yang Shi
2025-09-03 0:50 ` Yang Shi
2025-09-04 13:14 ` Ryan Roberts
2025-09-04 13:16 ` Ryan Roberts
2025-09-04 17:47 ` Yang Shi
2025-09-04 21:49 ` Yang Shi
2025-09-08 16:34 ` Ryan Roberts
2025-09-08 18:31 ` Yang Shi
2025-09-09 14:36 ` Ryan Roberts
2025-09-09 15:32 ` Yang Shi
2025-09-09 16:32 ` Ryan Roberts
2025-09-09 17:32 ` Yang Shi
2025-09-11 22:03 ` Yang Shi
2025-09-17 16:28 ` Ryan Roberts
2025-09-17 17:21 ` Yang Shi
2025-09-17 18:58 ` Ryan Roberts
2025-09-17 19:15 ` Yang Shi
2025-09-17 19:40 ` Ryan Roberts
2025-09-17 19:59 ` Yang Shi
2025-09-16 23:44 ` Yang Shi
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