[PATCH v2 2/2] arm64: mm: implement vmemmap_check_pmd for arm64

[Zhenhua Huang]

On 2024/12/31 14:59, Anshuman Khandual wrote:
> A very small nit regarding the subject line. The callback
> vmemmap_check_pmd() is already present on arm64 platform
> which is rather incomplete. Something like this might be
> better.
> 
> arm64/mm: Test for pmd_sect() in vmemmap_check_pmd()
> 
> On 12/30/24 13:18, Zhenhua Huang wrote:
>>
>>
>> On 2024/12/27 10:57, Anshuman Khandual wrote:
>>> However it does not really check the entry to be a section mapping which it should.
>>> Returning pmd_sect(READ_ONCE(*pmdp)) is the right thing, which should have been the
>>> case from the beginning when vmemmap_check_pmd() was added. I guess because arm64's
>>> original vmemmap_populate() checked only for vmemmap_verify() as well. So probably
>>> this does not need a "Fixes: " tag.
>>
>> Hi Anshuman,
>>
>> I agree, will remove "Fixes: " tag in next patchset
> 
> Could you please send a V3 of this patch separately instead
> and not part of this series as they are not really related.

Sure, Thanks Anshuman. Will gather information and update after coming 
back from Holiday!

> 
> But after implementing the following changes
> 
> 1) Use READ_ONCE() as indicated earlier
> 2) Drop the "Fixes: " tag
> 3) Update the commit message explaining why pmd_sect() is
>     required here and how the originally commit missed that
> 4) Update the subject line