Re: [PATCH 5/5] lib/ioremap: Ensure break-before-make is used for huge p4d mappings

From: Kani, Toshi
Date: Mon Sep 17 2018 - 14:55:33 EST


On Wed, 2018-09-12 at 11:26 +0100, Will Deacon wrote:
> Whilst no architectures actually enable support for huge p4d mappings
> in the vmap area, the code that is implemented should be using
> break-before-make, as we do for pud and pmd huge entries.
>
> Cc: Chintan Pandya <cpandya@xxxxxxxxxxxxxx>
> Cc: Toshi Kani <toshi.kani@xxxxxxx>
> Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
> Cc: Michal Hocko <mhocko@xxxxxxxx>
> Cc: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx>
> Signed-off-by: Will Deacon <will.deacon@xxxxxxx>

Thanks. This keeps the p4d path consistent.

Reviewed-by: Toshi Kani <toshi.kani@xxxxxxx>

-Toshi