Martin Husemann <mar...@duskware.de> writes: > On Sun, Nov 18, 2018 at 04:19:50PM +0530, Cherry G.Mathew wrote: >> Typo: >> https://mail-index.netbsd.org/source-changes/2018/11/18/msg100702.html > > Ugh - can't you just modify > > CLKF_USERMODE(frame) > CLKF_PC(frame) > CLKF_INTR(frame) > > for xen making them ignore their frame argument and use the per-cpu cached > (but more minimal) data instead? >
I can , yes - I'll have a quick look at the numbers though - I suspect the cacheline footprint for those three vs. the entire frame ought to be about the same. > I wonder if the original change you proposed would be worth the churn as > we are trying to become tickless and this all will get a big overhaul > anyway. > Ah - in that case, the MD approach above, is probably a better idea. -- ~cherry
