Re: kernel-side thread stack swapping

On Fri, Sep 02, 2022 at 02:05:37PM +0200, Mateusz Guzik wrote:
> Is this really of practical use today?
> 
> I have a WIP patch which needs to temporarily store something on the
> stack and should things go wrong enough it will be accessed by UMA,
> which can't handle the fault nor decide to skip the access.
> 
> I can add something like td_pinstack or whatever to keep it around,
> but perhaps the entire machinery can be just whacked?
p_hold already does that.