Re: [PATCH V3 0/3] arm64: Enable vmemmap mapping from device memory

[Anshuman Khandual]

On 03/31/2020 10:39 AM, Anshuman Khandual wrote:
> This series enables vmemmap backing memory allocation from device memory
> ranges on arm64. But before that, it enables vmemmap_populate_basepages()
> and vmemmap_alloc_block_buf() to accommodate struct vmem_altmap based
> alocation requests.
> 
> This series applies after latest (v14) arm64 memory hot remove series
> (https://lkml.org/lkml/2020/3/3/1746) on Linux 5.6.
> 
> Pending Question:
> 
> altmap_alloc_block_buf() does not have any other remaining users in the
> tree after this change. Should it be converted into a static function and
> it's declaration be dropped from the header (include/linux/mm.h). Avoided
> doing so because I was not sure if there are any off-tree users or not.
> 
> Changes in V3:
> 
> - Dropped comment from free_hotplug_page_range() per Robin
> - Modified comment in unmap_hotplug_range() per Robin
> - Enabled altmap support in vmemmap_alloc_block_buf() per Robin

Just a gentle ping. Any updates on this series ? In particular, is there
any comments or suggestions or concerns with respect to the first two
patches here that change the core MM and relevant call sites on some
platforms. Thank you.

- Anshuman