Re: [PATCH] mm/thp: Make ARCH_ENABLE_SPLIT_PMD_PTLOCK dependent on PGTABLE_LEVELS > 2

[Anshuman Khandual]

On 5/10/21 2:23 PM, Peter Zijlstra wrote:
> On Mon, May 10, 2021 at 10:05:45AM +0530, Anshuman Khandual wrote:
>> -	select ARCH_ENABLE_SPLIT_PMD_PTLOCK if X86_64 || X86_PAE
>> +	select ARCH_ENABLE_SPLIT_PMD_PTLOCK if (PGTABLE_LEVELS > 2) && (X86_64 || X86_PAE)
> 
> It's still very early on a Monday, but IIRC this new condition is
> identical to the pre-existing one.

Did not get it, could you please elaborate ?