On 26/03/20 03:19, Wanpeng Li wrote: > The original single target IPI fastpath patch forgot to filter the > ICR destination shorthand field. Multicast IPI is not suitable for > this feature since wakeup the multiple sleeping vCPUs will extend > the interrupt disabled time, it especially worse in the over-subscribe > and VM has a little bit more vCPUs scenario. Let's narrow it down to > single target IPI. In addition, this patchset micro-optimize virtual > IPI emulation sequence for fastpath. > > Wanpeng Li (3): > KVM: X86: Delay read msr data iff writes ICR MSR > KVM: X86: Narrow down the IPI fastpath to single target IPI > KVM: X86: Micro-optimize IPI fastpath delay > > arch/x86/kvm/lapic.c | 4 ++-- > arch/x86/kvm/lapic.h | 1 + > arch/x86/kvm/x86.c | 14 +++++++++++--- > 3 files changed, 14 insertions(+), 5 deletions(-) > Queued 2 for 5.6 and 1-3 for 5.7, thanks. Paolo
