linux-kernel - [PATCH RFC v1 04/10] KVM: VMX: Add missing VMEXIT controls to vmcs

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Date:   Wed, 22 Jun 2022 18:44:26 +0200
From:   Vitaly Kuznetsov <vkuznets@...hat.com>
To:     kvm@...r.kernel.org, Paolo Bonzini <pbonzini@...hat.com>,
        Anirudh Rayabharam <anrayabh@...ux.microsoft.com>,
        Sean Christopherson <seanjc@...gle.com>
Cc:     Wanpeng Li <wanpengli@...cent.com>,
        Jim Mattson <jmattson@...gle.com>,
        Maxim Levitsky <mlevitsk@...hat.com>,
        linux-hyperv@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH RFC v1 04/10] KVM: VMX: Add missing VMEXIT controls to vmcs_config

Signed-off-by: Vitaly Kuznetsov <vkuznets@...hat.com>
---
 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