> On Jun 25, 2019, at 8:36 PM, Andy Lutomirski <luto@xxxxxxxxxx> wrote: > > On Wed, Jun 12, 2019 at 11:49 PM Nadav Amit <namit@xxxxxxxxxx> wrote: >> To improve TLB shootdown performance, flush the remote and local TLBs >> concurrently. Introduce flush_tlb_multi() that does so. The current >> flush_tlb_others() interface is kept, since paravirtual interfaces need >> to be adapted first before it can be removed. This is left for future >> work. In such PV environments, TLB flushes are not performed, at this >> time, concurrently. > > Would it be straightforward to have a default PV flush_tlb_multi() > that uses flush_tlb_others() under the hood? I prefer not to have a default PV implementation that should anyhow go away. I can create unoptimized untested versions for Xen and Hyper-V, if you want.
