Changes since v5: - Rebase to kvm/queue. - Add "KVM: selftests: state_test: test bare VMXON migration" patch. Original description: This is an initial implementation of Enlightened VMCS for nested Hyper-V on KVM. Using it helps to spare 1500 cpu cycles for nested vmexit (tight cpuid loop in WS2016 with Hyper-V role on KVM: 15200 cycles -> 13700 cycles). Ladi Prosek (1): KVM: hyperv: define VP assist page helpers Vitaly Kuznetsov (12): KVM: VMX: refactor evmcs_sanitize_exec_ctrls() KVM: nVMX: add KVM_CAP_HYPERV_ENLIGHTENED_VMCS capability KVM: nVMX: add enlightened VMCS state KVM: nVMX: implement enlightened VMPTRLD and VMCLEAR KVM: nVMX: optimize prepare_vmcs02{,_full} for Enlightened VMCS case x86/kvm/hyperv: don't clear VP assist pages on init x86/kvm/lapic: preserve gfn_to_hva_cache len on cache reinit x86/kvm/nVMX: allow bare VMXON state migration KVM: selftests: state_test: test bare VMXON migration x86/kvm/nVMX: nested state migration for Enlightened VMCS tools/headers: update kvm.h KVM: selftests: add Enlightened VMCS test arch/x86/include/asm/kvm_host.h | 3 + arch/x86/include/uapi/asm/kvm.h | 1 + arch/x86/kvm/hyperv.c | 31 +- arch/x86/kvm/hyperv.h | 4 + arch/x86/kvm/lapic.c | 14 +- arch/x86/kvm/lapic.h | 2 +- arch/x86/kvm/svm.c | 9 + arch/x86/kvm/vmx.c | 887 ++++++++++--- arch/x86/kvm/x86.c | 23 +- include/uapi/linux/kvm.h | 1 + tools/include/uapi/linux/kvm.h | 5 + tools/testing/selftests/kvm/Makefile | 1 + tools/testing/selftests/kvm/include/evmcs.h | 1098 +++++++++++++++++ .../selftests/kvm/include/x86_64/vmx.h | 29 + tools/testing/selftests/kvm/lib/x86_64/vmx.c | 51 +- .../testing/selftests/kvm/x86_64/evmcs_test.c | 159 +++ .../testing/selftests/kvm/x86_64/state_test.c | 22 +- .../kvm/x86_64/vmx_tsc_adjust_test.c | 1 + 18 files changed, 2159 insertions(+), 182 deletions(-) create mode 100644 tools/testing/selftests/kvm/include/evmcs.h create mode 100644 tools/testing/selftests/kvm/x86_64/evmcs_test.c -- 2.17.1