[PATCH RFC v1 04/10] KVM: VMX: Add missing VMEXIT controls to vmcs_config

From: Vitaly Kuznetsov
Date: Wed Jun 22 2022 - 12:45:01 EST


Signed-off-by: Vitaly Kuznetsov <vkuznets@xxxxxxxxxx>
---
arch/x86/kvm/vmx/vmx.c | 6 ++++++
1 file changed, 6 insertions(+)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 4583de7f0324..829d66ab6956 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -2582,8 +2582,11 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
min |= VM_EXIT_HOST_ADDR_SPACE_SIZE;
#endif
opt = VM_EXIT_LOAD_IA32_PERF_GLOBAL_CTRL |
+ VM_EXIT_SAVE_IA32_PAT |
VM_EXIT_LOAD_IA32_PAT |
+ VM_EXIT_SAVE_IA32_EFER |
VM_EXIT_LOAD_IA32_EFER |
+ VM_EXIT_SAVE_VMX_PREEMPTION_TIMER |
VM_EXIT_CLEAR_BNDCFGS |
VM_EXIT_PT_CONCEAL_PIP |
VM_EXIT_CLEAR_IA32_RTIT_CTL;
@@ -4246,6 +4249,9 @@ static u32 vmx_vmexit_ctrl(void)
{
u32 vmexit_ctrl = vmcs_config.vmexit_ctrl;

+ vmexit_ctrl &= ~(VM_EXIT_SAVE_IA32_PAT | VM_EXIT_SAVE_IA32_EFER |
+ VM_EXIT_SAVE_VMX_PREEMPTION_TIMER);
+
if (vmx_pt_mode_is_system())
vmexit_ctrl &= ~(VM_EXIT_PT_CONCEAL_PIP |
VM_EXIT_CLEAR_IA32_RTIT_CTL);
--
2.35.3