Re: [PATCH 0/5] Introduce support for PSF mitigation
From: Borislav Petkov
Date: Fri Apr 09 2021 - 05:08:09 EST
On Thu, Apr 08, 2021 at 09:56:47AM -0500, Saripalli, RK wrote:
> It is possible most applications have been reviewed and scrubbed for
> SSB-type attacks but PSF-type issues may not have been looked at yet.
> This may be one of the cases where SSB is enabled but PSF is disabled
> until the application(s) are scrubbed for the same.
Right, and for that I think we could do a slimmer version of the psfd=
toggle - no prctl and seccomp stuff - just the cmdline disable thing to
keep this simpler.
Btw "psfd=" is maybe too short and cryptic. It would probably be more
user-friendly if it were called:
predict_store_fwd={on,off,...}
or so.
Thx.
--
Regards/Gruss,
Boris.
https://people.kernel.org/tglx/notes-about-netiquette