Re: [PATCH] tools headers: Sync x86 cpufeatures and arm64 cputype headers

[Garg, Shivank]

On 9/29/2025 1:57 PM, Leo Yan wrote:
> Hi Shivank,
> 
> [ + James, perf-user ML ]
> 
> On Mon, Sep 29, 2025 at 06:16:45AM +0000, Shivank Garg wrote:
>> To pick up the changes in this cset:
>>
>> commit 2f8f173413f1 ("x86/vmscape: Add conditional IBPB mitigation")
>> commit a508cec6e521 ("x86/vmscape: Enumerate VMSCAPE bug")
>> commit c8c2647e69be ("arm64: Make  _midr_in_range_list() an exported function")
>> commit e3121298c7fc ("arm64: Modify _midr_range() functions to read MIDR/REVIDR internally")
>>
>> This addresses these perf build warnings:
>> tools/perf$ ./check-headers.sh
>> Warning: Kernel ABI header differences:
>>   diff -u tools/arch/x86/include/asm/cpufeatures.h arch/x86/include/asm/cpufeatures
>>   diff -u tools/arch/arm64/include/asm/cputype.h arch/arm64/include/asm/cputype.h
> 
> Please drop arm64 related syncing, otherwise, it will break perf
> building.

Sure, I'll send V2 without arm64 sync.

Thanks,
Shivank
> 
> At the meantime, James is working on refactoring cpu type definitions
> for Arm64, we expect to avoid syncing cputype.h.
> 
> Thanks,
> Leo