diff options
| -rw-r--r-- | arch/x86/include/asm/vmx.h | 1 | ||||
| -rw-r--r-- | arch/x86/kvm/vmx.c | 7 |
2 files changed, 7 insertions, 1 deletions
diff --git a/arch/x86/include/asm/vmx.h b/arch/x86/include/asm/vmx.h index 966502d4682e..2067264fb7f5 100644 --- a/arch/x86/include/asm/vmx.h +++ b/arch/x86/include/asm/vmx.h @@ -100,6 +100,7 @@ #define VMX_MISC_PREEMPTION_TIMER_RATE_MASK 0x0000001f #define VMX_MISC_SAVE_EFER_LMA 0x00000020 +#define VMX_MISC_ACTIVITY_HLT 0x00000040 /* VMCS Encodings */ enum vmcs_field { diff --git a/arch/x86/kvm/vmx.c b/arch/x86/kvm/vmx.c index 1024689ac717..f90320b204a9 100644 --- a/arch/x86/kvm/vmx.c +++ b/arch/x86/kvm/vmx.c @@ -2340,6 +2340,7 @@ static __init void nested_vmx_setup_ctls_msrs(void) rdmsr(MSR_IA32_VMX_MISC, nested_vmx_misc_low, nested_vmx_misc_high); nested_vmx_misc_low &= VMX_MISC_PREEMPTION_TIMER_RATE_MASK | VMX_MISC_SAVE_EFER_LMA; + nested_vmx_misc_low |= VMX_MISC_ACTIVITY_HLT; nested_vmx_misc_high = 0; } @@ -7938,7 +7939,8 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch) return 1; } - if (vmcs12->guest_activity_state != GUEST_ACTIVITY_ACTIVE) { + if (vmcs12->guest_activity_state != GUEST_ACTIVITY_ACTIVE && + vmcs12->guest_activity_state != GUEST_ACTIVITY_HLT) { nested_vmx_failValid(vcpu, VMXERR_ENTRY_INVALID_CONTROL_FIELD); return 1; } @@ -8067,6 +8069,9 @@ static int nested_vmx_run(struct kvm_vcpu *vcpu, bool launch) prepare_vmcs02(vcpu, vmcs12); + if (vmcs12->guest_activity_state == GUEST_ACTIVITY_HLT) + return kvm_emulate_halt(vcpu); + /* * Note no nested_vmx_succeed or nested_vmx_fail here. At this point * we are no longer running L1, and VMLAUNCH/VMRESUME has not yet |