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    SubjectRe: [PATCH 0/3] KVM: X86: Single target IPI fastpath enhancement
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    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

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