Changes since v5:
- New 'hybrid' approach to VP indexes: introduce 'num_mismatched_vp_indexes'
and use it for optimization in both PV IPI and TLB flush [Paolo Bonzini,
Roman Kagan].
- Rebase, KVM_CAP_HYPERV_SEND_IPI is now '160'.
- Patches 3-5 are new in this version.
- Drop "x86/hyper-v: rename ipi_arg_{ex,non_ex} structures" patch as it is
already merged in kvm/queue.
Original description:
Using hypercall for sending IPIs is faster because this allows to specify
any number of vCPUs (even > 64 with sparse CPU set), the whole procedure
will take only one VMEXIT.
Same as PV TLB flush, this allows Windows guests having > 64 vCPUs to boot
on KVM when Hyper-V extensions are enabled.
Vitaly Kuznetsov (7):
KVM: x86: hyperv: enforce vp_index < KVM_MAX_VCPUS
KVM: x86: hyperv: optimize 'all cpus' case in kvm_hv_flush_tlb()
KVM: x86: hyperv: consistently use 'hv_vcpu' for 'struct kvm_vcpu_hv'
variables
KVM: x86: hyperv: keep track of mismatched VP indexes
KVM: x86: hyperv: valid_bank_mask should be 'u64'
KVM: x86: hyperv: optimize kvm_hv_flush_tlb() for vp_index == vcpu_idx
case
KVM: x86: hyperv: implement PV IPI send hypercalls
Documentation/virtual/kvm/api.txt | 7 +
arch/x86/include/asm/kvm_host.h | 3 +
arch/x86/kvm/hyperv.c | 268 +++++++++++++++++++++++-------
arch/x86/kvm/trace.h | 42 +++++
arch/x86/kvm/x86.c | 1 +
include/uapi/linux/kvm.h | 1 +
virt/kvm/kvm_main.c | 6 +-
7 files changed, 265 insertions(+), 63 deletions(-)
--
2.17.1
