Re: [PATCH 0/4] x86/hyper-v: optimize PV IPIs

Vitaly Kuznetsov writes: > Wanpeng Li writes: > >> Hi Vitaly, (fix my reply mess this time) >> On Sat, 23 Jun 2018 at 01:09, Vitaly Kuznetsov wrote: >>> >>> When reviewing my "x86/hyper-v: use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_ >>> {LIST,SPACE} hypercalls when possible" patch Michael

Re: [PATCH 0/4] x86/hyper-v: optimize PV IPIs

On Wed, 27 Jun 2018 at 17:25, Vitaly Kuznetsov wrote: > > Wanpeng Li writes: > > > Hi Vitaly, (fix my reply mess this time) > > On Sat, 23 Jun 2018 at 01:09, Vitaly Kuznetsov wrote: > >> > >> When reviewing my "x86/hyper-v: use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_ > >> {LIST,SPACE} hypercalls

Re: [PATCH 0/4] x86/hyper-v: optimize PV IPIs

Wanpeng Li writes: > Hi Vitaly, (fix my reply mess this time) > On Sat, 23 Jun 2018 at 01:09, Vitaly Kuznetsov wrote: >> >> When reviewing my "x86/hyper-v: use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_ >> {LIST,SPACE} hypercalls when possible" patch Michael suggested to apply the >> same idea to PV

Re: [PATCH 0/4] x86/hyper-v: optimize PV IPIs

Wanpeng Li writes: > Hi Vitaly, (fix my reply mess this time) > On Sat, 23 Jun 2018 at 01:09, Vitaly Kuznetsov wrote: >> >> When reviewing my "x86/hyper-v: use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_ >> {LIST,SPACE} hypercalls when possible" patch Michael suggested to apply the >> same idea to PV

Re: [PATCH 0/4] x86/hyper-v: optimize PV IPIs

Hi Vitaly, (fix my reply mess this time) On Sat, 23 Jun 2018 at 01:09, Vitaly Kuznetsov wrote: > > When reviewing my "x86/hyper-v: use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_ > {LIST,SPACE} hypercalls when possible" patch Michael suggested to apply the > same idea to PV IPIs. Here we go! > >

[PATCH 0/4] x86/hyper-v: optimize PV IPIs

When reviewing my "x86/hyper-v: use cheaper HVCALL_FLUSH_VIRTUAL_ADDRESS_ {LIST,SPACE} hypercalls when possible" patch Michael suggested to apply the same idea to PV IPIs. Here we go! Despite what Hyper-V TLFS says about HVCALL_SEND_IPI hypercall, it can actually be 'fast' (passing parameters