Re: [PATCH] mm: Replace READ_ONCE() with standard page table accessors

From: Dev Jain

Date: Tue Oct 07 2025 - 05:53:30 EST



On 07/10/25 1:24 pm, Anshuman Khandual wrote:

On 07/10/25 12:41 PM, Dev Jain wrote:
On 07/10/25 12:01 pm, Anshuman Khandual wrote:
Replace all READ_ONCE() with a standard page table accessors i.e pxdp_get()
that defaults into READ_ONCE() in cases where platform does not override.
Does any platform override into something else currently? The way you write
the description implies that.
That's how the callbacks have been designed to be overridden when required.

What I mean is, if currently some arch is overriding into something else,
this patch will be a functional change. So it is beneficial to say
in the description that the patch is a safeguard for when the platform
chooses to override, and no functional change is intended.

Reviewed-by: Dev Jain <dev.jain@xxxxxxx>