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Subject[PATCH 0/3] KVM: X86: Single target IPI fastpath enhancement
Date
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(-)

--
2.7.4

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