KVM: SVM: Rename svm_flush_tlb() to svm_flush_tlb_current()

Rename svm_flush_tlb() to svm_flush_tlb_current() so that at least one of
the flushing operations in svm_x86_ops can be filled via kvm-x86-ops.h,
and to document the scope of the flush (specifically that it doesn't
flush "all").

Opportunistically make svm_tlb_flush_current(), was svm_flush_tlb(),
static.

No functional change intended.
Signed-off-by: Sean Christopherson <seanjc@google.com>
Message-Id: <20220128005208.4008533-17-seanjc@google.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

arch/x86/kvm/svm/svm.c

@@ -265,6 +265,8 @@ u32 svm_msrpm_offset(u32 msr)
 
 #define MAX_INST_SIZE 15
 
+static void svm_flush_tlb_current(struct kvm_vcpu *vcpu);
+
 static int get_npt_level(void)
 {
 #ifdef CONFIG_X86_64
@@ -1658,7 +1660,7 @@ void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4)
 	unsigned long old_cr4 = vcpu->arch.cr4;
 
 	if (npt_enabled && ((old_cr4 ^ cr4) & X86_CR4_PGE))
-		svm_flush_tlb(vcpu);
+		svm_flush_tlb_current(vcpu);
 
 	vcpu->arch.cr4 = cr4;
 	if (!npt_enabled) {
@@ -3503,7 +3505,7 @@ static int svm_set_identity_map_addr(struct kvm *kvm, u64 ident_addr)
 	return 0;
 }
 
-void svm_flush_tlb(struct kvm_vcpu *vcpu)
+static void svm_flush_tlb_current(struct kvm_vcpu *vcpu)
 {
 	struct vcpu_svm *svm = to_svm(vcpu);
 
@@ -4536,10 +4538,10 @@ static struct kvm_x86_ops svm_x86_ops __initdata = {
 	.set_rflags = svm_set_rflags,
 	.get_if_flag = svm_get_if_flag,
 
-	.flush_tlb_all = svm_flush_tlb,
-	.flush_tlb_current = svm_flush_tlb,
+	.flush_tlb_all = svm_flush_tlb_current,
+	.flush_tlb_current = svm_flush_tlb_current,
 	.flush_tlb_gva = svm_flush_tlb_gva,
-	.flush_tlb_guest = svm_flush_tlb,
+	.flush_tlb_guest = svm_flush_tlb_current,
 
 	.vcpu_pre_run = svm_vcpu_pre_run,
 	.vcpu_run = svm_vcpu_run,

arch/x86/kvm/svm/svm.h

@@ -480,7 +480,6 @@ void svm_vcpu_free_msrpm(u32 *msrpm);
 int svm_set_efer(struct kvm_vcpu *vcpu, u64 efer);
 void svm_set_cr0(struct kvm_vcpu *vcpu, unsigned long cr0);
 void svm_set_cr4(struct kvm_vcpu *vcpu, unsigned long cr4);
-void svm_flush_tlb(struct kvm_vcpu *vcpu);
 void disable_nmi_singlestep(struct vcpu_svm *svm);
 bool svm_smi_blocked(struct kvm_vcpu *vcpu);
 bool svm_nmi_blocked(struct kvm_vcpu *vcpu);