Re: [PATCH 0/3] Stack checking on Arm

[Julien Grall <julien@xxxxxxx>]

Hi,

On 29/07/2024 15:24, Stewart Hildebrand wrote:
> This series introduces stack check instrumentation on Arm. This is
> helpful for safety certification efforts. I'm sending this in an RFC
> state because I wanted to gather opinions on the approach of using
> -finstrument-functions.
This looks ok for an initial approach. I wonder if longer term we want 
to implement stack guards on Arm. We would need to allocate an extra 
"virtual" page per stack that would be unmapped.
The advantage is this could be used also in production and doesn't rely 
on any support from the processor.
Any thoughts?

Cheers,

--
Julien Grall