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From: Yang Shi <yang@os.amperecomputing.com>
To: catalin.marinas@arm.com, will@kernel.org, ryan.roberts@arm.com,
	akpm@linux-foundation.org, david@redhat.com,
	lorenzo.stoakes@oracle.com, ardb@kernel.org, dev.jain@arm.com,
	scott@os.amperecomputing.com, cl@gentwo.org
Cc: yang@os.amperecomputing.com,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org, linux-mm@kvack.org
Subject: [PATCH v8 2/5] arm64: cpufeature: add AmpereOne to BBML2 allow list
Date: Wed, 17 Sep 2025 12:02:08 -0700	[thread overview]
Message-ID: <20250917190323.3828347-3-yang@os.amperecomputing.com> (raw)
In-Reply-To: <20250917190323.3828347-1-yang@os.amperecomputing.com>

AmpereOne supports BBML2 without conflict abort, add to the allow list.

Reviewed-by: Christoph Lameter (Ampere) <cl@gentwo.org>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
Acked-by: Catalin Marinas <catalin.marinas@arm.com>
Signed-off-by: Yang Shi <yang@os.amperecomputing.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 ef269a5a37e1..ba07eeff2a8d 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2235,6 +2235,8 @@ 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),
 		{}
 	};
 
-- 
2.47.0



  parent reply	other threads:[~2025-09-17 19:04 UTC|newest]

Thread overview: 51+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-09-17 19:02 [PATCH v8 0/5] arm64: support FEAT_BBM level 2 and large block mapping when rodata=full Yang Shi
2025-09-17 19:02 ` [PATCH v8 1/5] arm64: Enable permission change on arm64 kernel block mappings Yang Shi
2025-09-17 19:02 ` Yang Shi [this message]
2025-09-17 19:02 ` [PATCH v8 3/5] arm64: mm: support large block mapping when rodata=full Yang Shi
2025-11-01 16:14   ` Guenter Roeck
2025-11-02 10:31     ` Ryan Roberts
2025-11-02 12:11       ` Ryan Roberts
2025-11-02 15:13         ` Guenter Roeck
2025-11-02 17:46         ` Guenter Roeck
2025-11-02 17:49         ` Guenter Roeck
2025-11-02 17:52           ` Guenter Roeck
2025-11-03  0:47         ` Yang Shi
2025-11-03 10:07           ` Ryan Roberts
2025-11-03 16:21             ` Yang Shi
2025-11-03  5:53         ` Dev Jain
2025-09-17 19:02 ` [PATCH v8 4/5] arm64: mm: split linear mapping if BBML2 unsupported on secondary CPUs Yang Shi
2026-02-02  7:18   ` Arnd Bergmann
2026-02-02  7:43     ` Ard Biesheuvel
2026-02-02  8:11       ` Arnd Bergmann
2025-09-17 19:02 ` [PATCH v8 5/5] arm64: kprobes: call set_memory_rox() for kprobe page Yang Shi
2025-09-18 12:48   ` Catalin Marinas
2025-09-18 15:05     ` Yang Shi
2025-09-18 15:30       ` Ryan Roberts
2025-09-18 15:50         ` Yang Shi
2025-09-18 15:32       ` Catalin Marinas
2025-09-18 15:48         ` Yang Shi
2025-09-18 21:10 ` [PATCH v8 0/5] arm64: support FEAT_BBM level 2 and large block mapping when rodata=full Will Deacon
2025-09-19 10:08   ` Ryan Roberts
2025-09-19 11:27     ` Will Deacon
2025-09-19 11:49       ` Ryan Roberts
2025-09-19 11:56         ` Will Deacon
2025-09-19 12:00           ` Ryan Roberts
2025-09-19 18:44             ` Will Deacon
2025-09-23  7:15               ` Ryan Roberts
2025-09-19 14:55   ` Yang Shi
2026-03-16  7:35 ` Jinjiang Tu
2026-03-16 15:47   ` Ryan Roberts
2026-03-17  0:15     ` Yang Shi
2026-03-17  2:06       ` Jinjiang Tu
2026-03-17  9:07         ` Ryan Roberts
2026-03-17 17:03           ` Yang Shi
2026-03-18  8:29           ` Jinjiang Tu
2026-03-18  9:17             ` Ryan Roberts
2026-03-19  1:22               ` Jinjiang Tu
2026-03-17 17:12         ` Yang Shi
2026-03-17  8:47       ` Kevin Brodsky
2026-03-17  9:13         ` Ryan Roberts
2026-03-17  9:29           ` Kevin Brodsky
2026-03-17 11:45             ` Ryan Roberts
2026-03-17 12:43               ` Kevin Brodsky
2026-03-17 15:05                 ` Ryan Roberts

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