Re: [PATCH] mm/hmm: reject shadow-stack mappings

[Gregory Price (Meta)]

On 2026-11-13 21:03 +0100, David Hildenbrand (Arm) wrote:
> On 11/13/26 20:55, Gregory Price (Meta) wrote:
> Cool, so I can drop
> 
> 	e27dc0754e3f4 mm/hmm: refuse shadow stack vmas in hmm_range_fault()
> 
> :)
> 

Haven't seen that one :], i suppose *yoink*

> Acked-by: David Hildenbrand (Arm) <david@xxxxxxxxxx>
> 
> 
> I used the comment:
> 
> +        * Shadow stack VMAs must not be written, and there is no particular
> +        * reason to allow read access to shadow stacks from devices, so just
> +        * disallow it entirely.
> +        *
> 

Seems reasonable, maybe addresses Jason's request for additional
context.

-- 
~Gregory