Re: [PATCH RESEND 1/2] prctl: Generalize PR_SET_MDWE support check to be per-arch

[Russell King (Oracle)]

On Mon, Feb 26, 2024 at 05:35:41PM -0800, Zev Weiss wrote:
> There exist systems other than PARISC where MDWE may not be feasible
> to support; rather than cluttering up the generic code with additional
> arch-specific logic let's add a generic function for checking MDWE
> support and allow each arch to override it as needed.
> 
> Signed-off-by: Zev Weiss <zev@xxxxxxxxxxxxxxxxx>
> Cc: <stable@xxxxxxxxxxxxxxx> # v6.3+

PA-RISC folk need to ack/review-by this patch. Alternatively, it needs
to be restructured to add the arch_memory_deny_write_exec_supported()
override without touching the PA-RISC code, which then makes the Arm
patch independent of the status of the PA-RISC patch. That will allow
the Arm issue to be solved even if an ack is not forthcoming for the
PA-RISC parts.

Alternatively, I wonder whether akpm would be willing to pick up this
patch set as-is.

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