Vitaly Kuznetsov <vkuznets@redhat.com> writes:
> The new nested specific enlightenment speeds up L2 vmexits by avoiding
> unnecessary updates to L2 MSR-Bitmap. Support for both VMX and SVM is
> coming to KVM:
> https://lore.kernel.org/kvm/20211129094704.326635-1-vkuznets@redhat.com/
> https://lore.kernel.org/kvm/20211220152139.418372-1-vkuznets@redhat.com/
>
Ping)
VMX part made it to KVM in v5.17-rc1:
commit 502d2bf5f2fd7c05adc2d4f057910bd5d4c4c63e
Author: Vitaly Kuznetsov <vkuznets@redhat.com>
Date: Mon Nov 29 10:47:04 2021 +0100
KVM: nVMX: Implement Enlightened MSR Bitmap feature
SVM part is still pending, will likely go to 5.18. QEMU enablement code
is, however, the same.
> Vitaly Kuznetsov (2):
> i386: Use hv_build_cpuid_leaf() for HV_CPUID_NESTED_FEATURES
> i386: Hyper-V Enlightened MSR bitmap feature
>
> docs/hyperv.txt | 10 ++++++++++
> target/i386/cpu.c | 2 ++
> target/i386/cpu.h | 2 +-
> target/i386/kvm/hyperv-proto.h | 5 +++++
> target/i386/kvm/kvm.c | 30 ++++++++++++++++++++++--------
> 5 files changed, 40 insertions(+), 9 deletions(-)
--
Vitaly