linux-kernel - [PATCH 2/2] arm64: cpufeature: Add Olympus MIDR to BBML2 allow list

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Message-ID: <20250918132548.1141306-3-sdonthineni@nvidia.com>
Date: Thu, 18 Sep 2025 08:25:48 -0500
From: Shanker Donthineni <sdonthineni@...dia.com>
To: Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>,
	<linux-arm-kernel@...ts.infradead.org>
CC: <linux-kernel@...r.kernel.org>, Shanker Donthineni
	<sdonthineni@...dia.com>, Vikram Sethi <vsethi@...dia.com>
Subject: [PATCH 2/2] arm64: cpufeature: Add Olympus MIDR to BBML2 allow list

The NVIDIA Olympus core supports BBML2 without conflict abort. Add
its MIDR to the allow list to enable FEAT_BBM.

Signed-off-by: Shanker Donthineni <sdonthineni@...dia.com>
---
 arch/arm64/kernel/cpufeature.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/kernel/cpufeature.c b/arch/arm64/kernel/cpufeature.c
index bb6d82b2f7584..30f45af3b684e 100644
--- a/arch/arm64/kernel/cpufeature.c
+++ b/arch/arm64/kernel/cpufeature.c
@@ -2236,6 +2236,7 @@ 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_NVIDIA_OLYMPUS),
 		{}
 	};
 
-- 
2.25.1