Re: UMIP and clearcpuid=

[Peter Zijlstra]

On Thu, Jun 11, 2026 at 08:37:36PM +0200, Peter Zijlstra wrote:
> On Thu, Jun 11, 2026 at 09:09:46AM -0700, Borislav Petkov wrote:
> 
> > > It is really annoying having to disable UMIP though, its bugged me, just
> > > not enough to ever actually do anything about it.
> > 
> > Well, what else could we do? Whitelist processes, make it more fine-grained or
> > so...?
> 
> Perhaps just one print per task might be a good start? Something like
> so?
> 
> I don't think anything hits this hard enough to matter performance wise;
> but the wine stuff can hit them often enough that the dmesg spam is
> annoying, and there's really nothing much you can do about it.

Apparently some games are hitting this rather hard:

  https://www.reddit.com/r/linux_gaming/comments/1qdj79f/is_mhwilds_performance_throttled_by_an_expensive/  

That seems to suggest the game is doing DLC checks on *EVERY* frame
while in a settlement. That's absolutely bonkers, but whatever.