Re: [PATCH 4/8] asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()

2020-06-29 Thread Mike Rapoport
On Sat, Jun 27, 2020 at 08:03:04PM +0100, Matthew Wilcox wrote: > On Sat, Jun 27, 2020 at 05:34:49PM +0300, Mike Rapoport wrote: > > More elaborate versions on arm64 and x86 account memory for the user page > > tables and call to pgtable_pmd_page_ctor() as the part of PMD page > > initialization.

Re: [PATCH 4/8] asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()

2020-06-28 Thread Mike Rapoport
On Sat, Jun 27, 2020 at 08:03:04PM +0100, Matthew Wilcox wrote: > On Sat, Jun 27, 2020 at 05:34:49PM +0300, Mike Rapoport wrote: > > More elaborate versions on arm64 and x86 account memory for the user page > > tables and call to pgtable_pmd_page_ctor() as the part of PMD page > > initialization.

Re: [PATCH 4/8] asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()

2020-06-27 Thread Matthew Wilcox
On Sat, Jun 27, 2020 at 05:34:49PM +0300, Mike Rapoport wrote: > More elaborate versions on arm64 and x86 account memory for the user page > tables and call to pgtable_pmd_page_ctor() as the part of PMD page > initialization. > > Move the arm64 version to include/asm-generic/pgalloc.h and use the

[PATCH 4/8] asm-generic: pgalloc: provide generic pmd_alloc_one() and pmd_free_one()

2020-06-27 Thread Mike Rapoport
From: Mike Rapoport For most architectures that support >2 levels of page tables, pmd_alloc_one() is a wrapper for __get_free_pages(), sometimes with __GFP_ZERO and sometimes followed by memset(0) instead. More elaborate versions on arm64 and x86 account memory for the user page tables and call