On 2/24/22 03:02, Muchun Song wrote:
> On Thu, Feb 24, 2022 at 3:48 AM Joao Martins <[email protected]>
> wrote:
>>
>> In support of using compound pages for devmap mappings, plumb the pgmap
>> down to the vmemmap_populate implementation. Note that while altmap is
>> retrievable from pgmap the memory hotplug code passes altmap without
>> pgmap[*], so both need to be independently plumbed.
>>
>> So in addition to @altmap, pass @pgmap to sparse section populate
>> functions namely:
>>
>> sparse_add_section
>> section_activate
>> populate_section_memmap
>> __populate_section_memmap
>>
>> Passing @pgmap allows __populate_section_memmap() to both fetch the
>> vmemmap_shift in which memmap metadata is created for and also to let
>> sparse-vmemmap fetch pgmap ranges to co-relate to a given section and pick
>> whether to just reuse tail pages from past onlined sections.
>>
>> While at it, fix the kdoc for @altmap for sparse_add_section().
>>
>> [*] https://lore.kernel.org/linux-mm/[email protected]/
>>
>> Signed-off-by: Joao Martins <[email protected]>
>> Reviewed-by: Dan Williams <[email protected]>
>
> Missed my Reviewed-by from previous version.
Sorry my distration, I was sure I had that added in.
Anyways, I've fixed now for real.
Joao
