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hv: Disable HLT and PAUSE-loop exiting emulation in lapic passthrough 

In lapic passthrough mode, it should passthrough HLT/PAUSE execution
too. This patch disable their emulation when switch to lapic passthrough mode.

Tracked-On: #4329
Tested-by: Dongsheng Zhang <dongsheng.x.zhang@intel.com>
Signed-off-by: Shuo A Liu <shuo.a.liu@intel.com>
Acked-by: Eddie Dong <eddie.dong@intel.com>
This commit is contained in:
Shuo A Liu 2020-01-10 13:57:13 +08:00 committed by wenlingz
parent 3edde2608c
commit b59e5a870a
1 changed files with 2 additions and 0 deletions
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2
hypervisor/arch/x86/guest/vmcs.c
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@ -599,11 +599,13 @@ void switch_apicv_mode_x2apic(struct acrn_vcpu *vcpu)
value32 = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS);
value32 &= ~VMX_PROCBASED_CTLS_TPR_SHADOW;
value32 &= ~VMX_PROCBASED_CTLS_HLT;
exec_vmwrite32(VMX_PROC_VM_EXEC_CONTROLS, value32);
exec_vmwrite32(VMX_TPR_THRESHOLD, 0U);
value32 = exec_vmread32(VMX_PROC_VM_EXEC_CONTROLS2);
value32 &= ~VMX_PROCBASED_CTLS2_PAUSE_LOOP;
value32 &= ~VMX_PROCBASED_CTLS2_VAPIC;
if (is_apicv_advanced_feature_supported()) {
value32 &= ~VMX_PROCBASED_CTLS2_VIRQ;