Benjamin LaHaise wrote: > >> +/* >> + * We aggressively remove defunct pgd from cr3. We execute unmap_vmas() >> + * *much* faster this way. >> + */ >> > > Are you switching mms in order to avoid all of the overhead associated with > flushing an active mm during task exit? If so, it makes much more sense to > do this in the generic helper, as it should be a win on x86 and x86-64 > where switching to init_mm is relatively low cost given the support for > global pages. I'll run some tests on a couple of systems this evening and > post the results. >
I tried this experiment on both x86 and x86-64 and I recall not seeing any effect. The mmu_gather optimization does most of this already. Zach _______________________________________________ Virtualization mailing list [email protected] https://lists.osdl.org/mailman/listinfo/virtualization
