Messages in this thread | | | From | Paolo Bonzini <> | Subject | [RFC PATCH 0/2] KVM: x86: guest exit microoptimization | Date | Thu, 16 Jun 2016 10:21:35 +0200 |
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This saves about 20 clock cycles per vmexit by avoiding a local_irq_save/restore pair. The price is that nested VMX will break with KVM hosts < 3.16, because the "acknowledge interrupt on exit" feature becomes mandatory. What do you think?
Paolo
Paolo Bonzini (2): KVM: x86: always use "acknowledge interrupt on exit" KVM: x86: use __kvm_guest_exit
arch/x86/kvm/svm.c | 6 ++++++ arch/x86/kvm/vmx.c | 11 ++++------- arch/x86/kvm/x86.c | 11 ++--------- 3 files changed, 12 insertions(+), 16 deletions(-)
-- 1.8.3.1
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