[PATCH v6 24/33] KVM: VMX: Move CPU_BASED_CR8_{LOAD,STORE}_EXITING filtering out of setup_vmcs_config()

From: Vitaly Kuznetsov <vkuznets@redhat.com>
To: kvm@vger.kernel.org, Paolo Bonzini <pbonzini@redhat.com>
Cc: Sean Christopherson <seanjc@google.com>,
	Wanpeng Li <wanpengli@tencent.com>,
	Jim Mattson <jmattson@google.com>,
	Michael Kelley <mikelley@microsoft.com>,
	Yuan Yao <yuan.yao@linux.intel.com>,
	Maxim Levitsky <mlevitsk@redhat.com>,
	linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: [PATCH v6 24/33] KVM: VMX: Move CPU_BASED_CR8_{LOAD,STORE}_EXITING filtering out of setup_vmcs_config()
Date: Tue, 30 Aug 2022 15:37:28 +0200	[thread overview]
Message-ID: <20220830133737.1539624-25-vkuznets@redhat.com> (raw)
In-Reply-To: <20220830133737.1539624-1-vkuznets@redhat.com>

As a preparation to reusing the result of setup_vmcs_config() in
nested VMX MSR setup, move CPU_BASED_CR8_{LOAD,STORE}_EXITING filtering
to vmx_exec_control().

No functional change intended.

Reviewed-by: Jim Mattson <jmattson@google.com>
Reviewed-by: Maxim Levitsky <mlevitsk@redhat.com>
Reviewed-by: Sean Christopherson <seanjc@google.com>
Signed-off-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <seanjc@google.com>
---
 arch/x86/kvm/vmx/vmx.c | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 9caed775b211..2e0deac5570f 100644
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -2556,11 +2556,6 @@ static __init int setup_vmcs_config(struct vmcs_config *vmcs_conf,
 				MSR_IA32_VMX_PROCBASED_CTLS,
 				&_cpu_based_exec_control))
 		return -EIO;
-#ifdef CONFIG_X86_64
-	if (_cpu_based_exec_control & CPU_BASED_TPR_SHADOW)
-		_cpu_based_exec_control &= ~CPU_BASED_CR8_LOAD_EXITING &
-					   ~CPU_BASED_CR8_STORE_EXITING;
-#endif
 	if (_cpu_based_exec_control & CPU_BASED_ACTIVATE_SECONDARY_CONTROLS) {
 		if (adjust_vmx_controls(KVM_REQUIRED_VMX_SECONDARY_VM_EXEC_CONTROL,
 					KVM_OPTIONAL_VMX_SECONDARY_VM_EXEC_CONTROL,
@@ -4331,13 +4326,17 @@ static u32 vmx_exec_control(struct vcpu_vmx *vmx)
 	if (vmx->vcpu.arch.switch_db_regs & KVM_DEBUGREG_WONT_EXIT)
 		exec_control &= ~CPU_BASED_MOV_DR_EXITING;
 
-	if (!cpu_need_tpr_shadow(&vmx->vcpu)) {
+	if (!cpu_need_tpr_shadow(&vmx->vcpu))
 		exec_control &= ~CPU_BASED_TPR_SHADOW;
+
 #ifdef CONFIG_X86_64
+	if (exec_control & CPU_BASED_TPR_SHADOW)
+		exec_control &= ~(CPU_BASED_CR8_LOAD_EXITING |
+				  CPU_BASED_CR8_STORE_EXITING);
+	else
 		exec_control |= CPU_BASED_CR8_STORE_EXITING |
 				CPU_BASED_CR8_LOAD_EXITING;
 #endif
-	}
 	if (!enable_ept)
 		exec_control |= CPU_BASED_CR3_STORE_EXITING |
 				CPU_BASED_CR3_LOAD_EXITING  |
-- 
2.37.2

