Re: [RFC V1 PATCH mm-hotfixes 0/3] mm, arch: A more robust approach to sync top level kernel page tables

[Harry Yoo <harry.yoo@oracle.com>]

On Wed, Jul 09, 2025 at 10:16:54PM +0900, Harry Yoo wrote:
> Harry Yoo (3):
>   mm: introduce and use {pgd,p4d}_populate_kernel()
>   x86/mm: define p*d_populate_kernel() and top level page table sync
>   x86/mm: convert {pgd,p4d}_populate{,_init} to _kernel variant
> 
>  arch/x86/include/asm/pgalloc.h |  41 +++++++++
>  arch/x86/mm/init_64.c          | 147 ++++++++++++++++-----------------
>  arch/x86/mm/kasan_init_64.c    |   8 +-
>  include/asm-generic/pgalloc.h  |   4 +
>  include/linux/pgalloc.h        |   0

Oops, while I created include/linux/pgalloc.h at first, I removed it
during the development and didn't realize it's still staged in git.

Will fix it in the next version, but let me wait for some feedback
for a while.

>  mm/kasan/init.c                |  10 +--
>  mm/percpu.c                    |   4 +-
>  mm/sparse-vmemmap.c            |   4 +-
>  8 files changed, 130 insertions(+), 88 deletions(-)
>  create mode 100644 include/linux/pgalloc.h
> 
> -- 
> 2.43.0
> 

-- 
Cheers,
Harry / Hyeonggon