[PATCH v7 2/6] arm64: cpufeature: add AmpereOne to BBML2 allow list

[Ryan Roberts]

On 29/08/2025 23:08, Yang Shi wrote:
> 
> 
> On 8/29/25 4:52 AM, Ryan Roberts wrote:
>> From: Yang Shi <yang at os.amperecomputing.com>
>>
>> AmpereOne supports BBML2 without conflict abort, add to the allow list.
>>
>> Signed-off-by: Yang Shi <yang at os.amperecomputing.com>
>> Reviewed-by: Christoph Lameter (Ampere) <cl at gentwo.org>
>> Reviewed-by: Ryan Roberts <ryan.roberts at arm.com>
> 
> I saw Catalin gave Reviewed-by to v6 of this patch, I think we can keep it.

Sorry I missed that. I see Catalin and Rb'ed again.

> 
> Yang
> 
>> ---
>>   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 9ad065f15f1d..b93f4ee57176 100644
>> --- a/arch/arm64/kernel/cpufeature.c
>> +++ b/arch/arm64/kernel/cpufeature.c
>> @@ -2234,6 +2234,8 @@ 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),
>>           {}
>>       };
>>   
>