From 13efe932d2fc3f4f753e7662d550e903b7ce8e88 Mon Sep 17 00:00:00 2001
From: Yang Shi <yang@os.amperecomputing.com>
Date: Wed, 17 Sep 2025 12:02:08 -0700
Subject: [PATCH] arm64: cpufeature: add AmpereOne to BBML2 allow list

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>
Signed-off-by: Will Deacon <will@kernel.org>
---
 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 c6cbeee48c571..cf2dd5ea173fe 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2236,6 +2236,8 @@ static bool has_bbml2_noabort(const struct arm64_cpu_capabilities *caps, int sco
 		MIDR_REV_RANGE(MIDR_CORTEX_X4, 0, 3, 0xf),
 		MIDR_REV_RANGE(MIDR_NEOVERSE_V3, 0, 2, 0xf),
 		MIDR_ALL_VERSIONS(MIDR_NVIDIA_OLYMPUS),
+		MIDR_ALL_VERSIONS(MIDR_AMPERE1),
+		MIDR_ALL_VERSIONS(MIDR_AMPERE1A),
 		{}
 	};
 
-- 
2.47.3