Excerpts from Linus Torvalds's message of January 11, 2022 3:19 am: > On Sun, Jan 9, 2022 at 9:18 PM Nicholas Piggin <npiggin@xxxxxxxxx> wrote: >> >> This is the patch that goes on top of the series I posted. It's not >> very clean at the moment it was just a proof of concept. > > Yeah, this looks like what x86 basically already effectively does. > > x86 obviously doesn't have that TLBIE option, and already has that > "exit lazy mode" logic (although it does so differently, using > switch_mm_irqs_off(), and guards it with the 'info->freed_tables' > check). > > But there are so many different possible ways to flush TLB's (the > whole "paravirt vs native") that it would still require some > double-checking that there isn't some case that does it differently.. Oh yeah x86 needs a little porting to be able to use this for sure, but there's no reason it couldn't do it. Thanks, Nick
