[PATCH RFC v1 03/10] KVM: VMX: Move CPU_BASED_{CR3_LOAD,CR3_STORE,INVLPG}_EXITING filtering out of setup_vmcs_config()
From: Vitaly Kuznetsov
Date: Wed Jun 22 2022 - 12:44:58 EST
Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
arch/x86/kvm/vmx/vmx.c | 10 ++++++++++
1 file changed, 10 insertions(+)
diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 01294a2fc1c1..4583de7f0324 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -4293,6 +4293,16 @@ static u32 vmx_exec_control(struct vcpu_vmx *vmx)
CPU_BASED_MONITOR_TRAP_FLAG |
CPU_BASED_PAUSE_EXITING);
+ if (vmcs_config.cpu_based_2nd_exec_ctrl & SECONDARY_EXEC_ENABLE_EPT) {
+ /*
+ * CR3 accesses and invlpg don't need to cause VM Exits when EPT
+ * enabled.
+ */
+ exec_control &= ~(CPU_BASED_CR3_LOAD_EXITING |
+ CPU_BASED_CR3_STORE_EXITING |
+ CPU_BASED_INVLPG_EXITING);
+ }
+
#ifdef CONFIG_X86_64
if (exec_control & CPU_BASED_TPR_SHADOW)
exec_control &= ~CPU_BASED_CR8_LOAD_EXITING &
--
2.35.3