Re: [PATCH v1 2/4] memblock: update initialization of reserved pages

From: David Hildenbrand
Date: Tue Apr 20 2021 - 09:56:36 EST


On 20.04.21 11:09, Mike Rapoport wrote:
From: Mike Rapoport <rppt@xxxxxxxxxxxxx>

The struct pages representing a reserved memory region are initialized
using reserve_bootmem_range() function. This function is called for each
reserved region just before the memory is freed from memblock to the buddy
page allocator.

The struct pages for MEMBLOCK_NOMAP regions are kept with the default
values set by the memory map initialization which makes it necessary to
have a special treatment for such pages in pfn_valid() and
pfn_valid_within().

Just a general question while thinking about it:

Would we right now initialize the memmap of these pages already via memmap_init_zone()->memmap_init_range()? (IOW, not marking the PageReserved?)

--
Thanks,

David / dhildenb