Re: [PATCH RFC/RFT v2 1/2] mm: helper `is_shadow_stack_vma` to check shadow stack vma

[Deepak Gupta <debug@rivosinc.com>]

On Thu, Oct 17, 2024 at 12:22:02PM +0100, Mark Brown wrote:
>On Wed, Oct 16, 2024 at 02:57:33PM -0700, Deepak Gupta wrote:
>> VM_SHADOW_STACK (alias to VM_HIGH_ARCH_5) is used to encode shadow stack
>> VMA on three architectures (x86 shadow stack, arm GCS and RISC-V shadow
>> stack). In case architecture doesn't implement shadow stack, it's VM_NONE
>> Introducing a helper `is_shadow_stack_vma` to determine shadow stack vma
>> or not.
>
>Reviewed-by: Mark Brown <broonie@kernel.org>
>
>though
>
>> @@ -387,7 +392,6 @@ static inline bool is_data_mapping(vm_flags_t flags)
>>  	return (flags & (VM_WRITE | VM_SHARED | VM_STACK)) == VM_WRITE;
>>  }
>>
>> -
>>  static inline void vma_iter_config(struct vma_iterator *vmi,
>>  		unsigned long index, unsigned long last)
>>  {
>>
>
>Unrelated (but reasonable) whitespace change.

Yeah I'll put that in commit message indicating this clean up in next version.