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Subject[PATCH v3 0/3] KVM: Introduce dedicated vCPUs hint KVM_HINTS_DEDICATED
Date
This patchset introduces dedicated vCPUs hint KVM_HINTS_DEDICATED, it 
has two users now:

1) Waiman Long mentioned that:

Generally speaking, unfair lock performs well for VMs with a small
number of vCPUs. Native qspinlock may perform better than pvqspinlock
if there is vCPU pinning and there is no vCPU over-commitment.

2) vCPUs are very unlikely to get preempted when they are the only task
running on a CPU. PV TLB flush is slower that the native flush in that
case.

v2 -> v3:
* a separate table for CPUID[0x40000001].EDX bits
* a new kvm_hint_has_feature macro
v1 -> v2:
* update to KVM_HINTS_DEDICATED

Wanpeng Li (3):
KVM: Introduce dedicated vCPUs hint KVM_HINTS_DEDICATED
KVM: X86: Choose qspinlock when dedicated vCPUs available
KVM: X86: Don't use PV TLB flush with dedicated vCPUs and steal time
disabled

Documentation/virtual/kvm/cpuid.txt | 12 +++++++++++-
arch/mips/include/asm/kvm_para.h | 5 +++++
arch/powerpc/include/asm/kvm_para.h | 5 +++++
arch/s390/include/asm/kvm_para.h | 5 +++++
arch/x86/include/asm/kvm_para.h | 6 ++++++
arch/x86/include/uapi/asm/kvm_para.h | 8 ++++++--
arch/x86/kernel/kvm.c | 18 ++++++++++++++++--
include/asm-generic/kvm_para.h | 5 +++++
include/linux/kvm_para.h | 5 +++++
9 files changed, 64 insertions(+), 5 deletions(-)

--
2.7.4

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