Messages in this thread | | | Subject | Re: [PATCH v2 3/4] arch/x86: Optionally flush L1D on context switch | From | Benjamin Herrenschmidt <> | Date | Wed, 08 Apr 2020 09:37:04 +1000 |
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On Tue, 2020-04-07 at 11:26 -0700, Kees Cook wrote: > > Add arch specific prctl()'s to opt-in to the L1D cache on context > > switch > > out, the existing mechanisms of tracking prev_mm via cpu_tlbstate > > is > > reused. cond_ibpb() is refactored and renamed into > > cond_mitigation(). > > I still think this should be a generic prctl(). If there is a strong > reason not to do this, can it be described in the commit log here?
Agreed.
Cheers, Ben.
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