[PATCH 2/4] arm64: cpufeature: add AmpereOne to BBML2 allow list

From: Yang Shi
Date: Thu Jul 24 2025 - 18:13:16 EST


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

Signed-off-by: Yang Shi <yang@xxxxxxxxxxxxxxxxxxxxxx>
---
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 7a3c404288d5..d2a8a509a58e 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2230,6 +2230,8 @@ 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),
{}
};

--
2.50.0