Subject: Re: [PATCH v8 05/12] mm: HUGE_VMAP arch support cleanup

From: Catalin Marinas <[email-masked]>
Date: Tue, 1 Dec 2020 14:21:56 +0000

On Sun, Nov 29, 2020 at 01:25:52AM +1000, Nicholas Piggin wrote:
> This changes the awkward approach where architectures provide init
> functions to determine which levels they can provide large mappings for,
> to one where the arch is queried for each call.
> 
> This removes code and indirection, and allows constant-folding of dead
> code for unsupported levels.
> 
> This also adds a prot argument to the arch query. This is unused
> currently but could help with some architectures (e.g., some powerpc
> processors can't map uncacheable memory with large pages).
> 
> Cc: [email-masked]
> Cc: Catalin Marinas <[email-masked]>
> Cc: Will Deacon <[email-masked]>
> Cc: [email-masked]
> Cc: Thomas Gleixner <[email-masked]>
> Cc: Ingo Molnar <[email-masked]>
> Cc: Borislav Petkov <[email-masked]>
> Cc: [email-masked]
> Cc: "H. Peter Anvin" <[email-masked]>
> Signed-off-by: Nicholas Piggin <[email-masked]>
> ---
>  arch/arm64/include/asm/vmalloc.h         |  8 +++
>  arch/arm64/mm/mmu.c                      | 10 +--

For arm64:

Acked-by: Catalin Marinas <[email-masked]>