On Fri, Jul 12, 2019 at 02:17:20PM +0200, Alexandre Chartre wrote: > On 7/12/19 1:44 PM, Peter Zijlstra wrote: > > AFAIK3 this wants/needs to be combined with core-scheduling to be > > useful, but not a single mention of that is anywhere. > > No. This is actually an alternative to core-scheduling. Eventually, ASI > will kick all sibling hyperthreads when exiting isolation and it needs to > run with the full kernel page-table (note that's currently not in these > patches). > > So ASI can be seen as an optimization to disabling hyperthreading: instead > of just disabling hyperthreading you run with ASI, and when ASI can't preserve > isolation you will basically run with a single thread. You can't do that without much of the scheduler changes present in the core-scheduling patches.
