KVM: x86/mmu: Merge kvm_{enable,disable}_tdp() into a common function

Combine kvm_enable_tdp() and kvm_disable_tdp() into a single function,
kvm_configure_mmu(), in preparation for doing additional configuration
during hardware setup.  And because having separate helpers is silly.

No functional change intended.

Reviewed-by: Vitaly Kuznetsov <vkuznets@redhat.com>
Signed-off-by: Sean Christopherson <sean.j.christopherson@intel.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

diff --git a/arch/x86/include/asm/kvm_host.h b/arch/x86/include/asm/kvm_host.h
index 143d0ce..c9b7211 100644 (file)
--- a/arch/x86/include/asm/kvm_host.h
+++ b/arch/x86/include/asm/kvm_host.h
@@ -1510,8 +1510,7 @@ void kvm_mmu_invlpg(struct kvm_vcpu *vcpu, gva_t gva);
 void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid);
 void kvm_mmu_new_cr3(struct kvm_vcpu *vcpu, gpa_t new_cr3, bool skip_tlb_flush);
 
-void kvm_enable_tdp(void);
-void kvm_disable_tdp(void);
+void kvm_configure_mmu(bool enable_tdp);
 
 static inline gpa_t translate_gpa(struct kvm_vcpu *vcpu, gpa_t gpa, u32 access,
                                  struct x86_exception *exception)

diff --git a/arch/x86/kvm/mmu/mmu.c b/arch/x86/kvm/mmu/mmu.c
index 050da02..724bc80 100644 (file)
--- a/arch/x86/kvm/mmu/mmu.c
+++ b/arch/x86/kvm/mmu/mmu.c
@@ -5559,18 +5559,11 @@ void kvm_mmu_invpcid_gva(struct kvm_vcpu *vcpu, gva_t gva, unsigned long pcid)
 }
 EXPORT_SYMBOL_GPL(kvm_mmu_invpcid_gva);
 
-void kvm_enable_tdp(void)
+void kvm_configure_mmu(bool enable_tdp)
 {
-       tdp_enabled = true;
+       tdp_enabled = enable_tdp;
 }
-EXPORT_SYMBOL_GPL(kvm_enable_tdp);
-
-void kvm_disable_tdp(void)
-{
-       tdp_enabled = false;
-}
-EXPORT_SYMBOL_GPL(kvm_disable_tdp);
-
+EXPORT_SYMBOL_GPL(kvm_configure_mmu);
 
 /* The return value indicates if tlb flush on all vcpus is needed. */
 typedef bool (*slot_level_handler) (struct kvm *kvm, struct kvm_rmap_head *rmap_head);

diff --git a/arch/x86/kvm/svm.c b/arch/x86/kvm/svm.c
index 6b7b0f8..422ee02 100644 (file)
--- a/arch/x86/kvm/svm.c
+++ b/arch/x86/kvm/svm.c
@@ -1458,10 +1458,7 @@ static __init int svm_hardware_setup(void)
        if (npt_enabled && !npt)
                npt_enabled = false;
 
-       if (npt_enabled)
-               kvm_enable_tdp();
-       else
-               kvm_disable_tdp();
+       kvm_configure_mmu(npt_enabled);
        pr_info("kvm: Nested Paging %sabled\n", npt_enabled ? "en" : "dis");
 
        if (nrips) {

diff --git a/arch/x86/kvm/vmx/vmx.c b/arch/x86/kvm/vmx/vmx.c
index 75f61fb..b4ae305 100644 (file)
--- a/arch/x86/kvm/vmx/vmx.c
+++ b/arch/x86/kvm/vmx/vmx.c
@@ -5320,7 +5320,6 @@ static void vmx_enable_tdp(void)
                VMX_EPT_RWX_MASK, 0ull);
 
        ept_set_mmio_spte_mask();
-       kvm_enable_tdp();
 }
 
 /*
@@ -7747,8 +7746,7 @@ static __init int hardware_setup(void)
 
        if (enable_ept)
                vmx_enable_tdp();
-       else
-               kvm_disable_tdp();
+       kvm_configure_mmu(enable_ept);
 
        /*
         * Only enable PML when hardware supports PML feature, and both EPT