[PATCH 0/5] Add BBML3 cpu feature

[Anshuman Khandual]

On 03/07/26 9:45 AM, Linu Cherian wrote:
> Hi Suzuki,
> 
> On Fri, Jul 03, 2026 at 08:47:01AM +0530, Linu Cherian wrote:
>> Hi Suzuki,
>>
>> On Wed, Jul 01, 2026 at 11:11:35AM +0100, Suzuki K Poulose wrote:
>>> On 01/07/2026 10:41, Linu Cherian wrote:
>>>> Patches 1 and 2 introduces BBML3 cpu feature
>>>> Patches 3, 4 and 5 adds more cpus to the BBML3 support list,
>>>> 	which dont advertise themselves through the standard
>>>> 	MMFR2_ID registers.
>>>>
>>>> Linu Cherian (5):
>>>>    arm64: cpufeature: Add BBML3
>>>>    arm64: cpufeature: Detect BBML3 based on MMFR2 ID
>>>
>>>
>>>>    arm64: cputype: Add Cortex-A520AE definitions
>>>>    arm64: cputype: Add C1-Nano definitions
>>>>    arm64: cpufeature: Extend bbml3 support list
>>>
>>> If you could move the last 3 patches to the top, would be easier
>>> for people to back port the "enable" BBLM3 for those CPUs, without
>>> the renaming conflicts.
>>>
>>
>> IMHO, if we change the order, "arm64: cpufeature: Extend bbml3 support list"
>> title need to be tweaked and might not go well with this BBML3 support series.
>> Also, backporting issue wouldnt be a problem if the whole series is
>> backported and not just 3 patches in isolation ?
>>
> 
> After looking further on this, i definitely agree that moving those patches up has an
> advantage, w.r.t avoiding dependency on other patches.

A possible patch order could be

  arm64/tools/sysreg: Update ID_AA64MMFR2_EL1
  arm64/cputype: Add Cortex-A520AE definitions
  arm64/cputype: Add C1-Nano definitions
  arm64/cpufeature: Extend supports_bbml2_noabort_list
  arm64/cpufeature: Add BBML3
  arm64/cpufeature: Detect BBML3 based on MMFR2 ID