On 8/5/21 9:02 PM, Zi Yan wrote: > From: Zi Yan <ziy@xxxxxxxxxx> > > Hi all, > > This patchset add support for kernel boot time adjustable MAX_ORDER, so that > user can change the largest size of pages obtained from buddy allocator. It also > removes the restriction on MAX_ORDER based on SECTION_SIZE_BITS, so that > buddy allocator can merge PFNs across memory sections when SPARSEMEM_VMEMMAP is > set. It is on top of v5.14-rc4-mmotm-2021-08-02-18-51. > > Motivation > === > > This enables kernel to allocate 1GB pages and is necessary for my ongoing work > on adding support for 1GB PUD THP[1]. This is also the conclusion I came up with > after some discussion with David Hildenbrand on what methods should be used for > allocating gigantic pages[2], since other approaches like using CMA allocator or > alloc_contig_pages() are regarded as suboptimal. I see references [1] [2] etc but no list of links at the end, did you forgot to include?
