Messages in this thread | | | Date | Thu, 17 Dec 2020 20:10:12 -0800 | From | Ira Weiny <> | Subject | Re: [NEEDS-REVIEW] [PATCH V3 04/10] x86/pks: Preserve the PKRS MSR on context switch |
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On Thu, Dec 17, 2020 at 12:41:50PM -0800, Dave Hansen wrote: > On 11/6/20 3:29 PM, ira.weiny@intel.com wrote: > > void disable_TSC(void) > > @@ -644,6 +668,8 @@ void __switch_to_xtra(struct task_struct *prev_p, struct task_struct *next_p) > > > > if ((tifp ^ tifn) & _TIF_SLD) > > switch_to_sld(tifn); > > + > > + pks_sched_in(); > > } > > Does the selftest for this ever actually schedule()?
At this point I'm not sure. This code has been in since the beginning. So its seen a lot of soak time.
> > I see it talking about context switching, but I don't immediately see > how it would.
We were trying to force parent and child to run on the same CPU. I suspect something is wrong in the timing of that test.
Ira
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