Thread (20 messages) 20 messages, 5 authors, 2025-08-07

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

From: Ryan Roberts <ryan.roberts@arm.com>
Date: 2025-08-01 14:36:18
Also in: lkml

On 24/07/2025 23:11, Yang Shi wrote:
AmpereOne supports BBML2 without conflict abort, add to the allow list.

Signed-off-by: Yang Shi <redacted>
Reviewed-by: Ryan Roberts <ryan.roberts@arm.com>
quoted hunk ↗ jump to hunk
---
 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),
 		{}
 	};
 
  
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