KVM: x86 emulator: make emulate_invlpg() an emulator callback

Removing direct calls to KVM.
Signed-off-by: Avi Kivity <avi@redhat.com>

arch/x86/include/asm/kvm_emulate.h

@@ -154,6 +154,7 @@ struct x86_emulate_ops {
 				const void *new,
 				unsigned int bytes,
 				struct x86_exception *fault);
+	void (*invlpg)(struct x86_emulate_ctxt *ctxt, ulong addr);
 
 	int (*pio_in_emulated)(struct x86_emulate_ctxt *ctxt,
 			       int size, unsigned short port, void *val,

arch/x86/include/asm/kvm_host.h

@@ -690,7 +690,6 @@ struct x86_emulate_ctxt;
 int kvm_fast_pio_out(struct kvm_vcpu *vcpu, int size, unsigned short port);
 void kvm_emulate_cpuid(struct kvm_vcpu *vcpu);
 int kvm_emulate_halt(struct kvm_vcpu *vcpu);
-int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address);
 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu);
 
 void kvm_get_segment(struct kvm_vcpu *vcpu, struct kvm_segment *var, int seg);

arch/x86/kvm/emulate.c

@@ -2573,7 +2573,7 @@ static int em_invlpg(struct x86_emulate_ctxt *ctxt)
 
 	rc = linearize(ctxt, c->src.addr.mem, 1, false, &linear);
 	if (rc == X86EMUL_CONTINUE)
-		emulate_invlpg(ctxt->vcpu, linear);
+		ctxt->ops->invlpg(ctxt, linear);
 	/* Disable writeback. */
 	c->dst.type = OP_NONE;
 	return X86EMUL_CONTINUE;

arch/x86/kvm/x86.c

@@ -4128,10 +4128,9 @@ static unsigned long get_segment_base(struct kvm_vcpu *vcpu, int seg)
 	return kvm_x86_ops->get_segment_base(vcpu, seg);
 }
 
-int emulate_invlpg(struct kvm_vcpu *vcpu, gva_t address)
+static void emulator_invlpg(struct x86_emulate_ctxt *ctxt, ulong address)
 {
-	kvm_mmu_invlpg(vcpu, address);
-	return X86EMUL_CONTINUE;
+	kvm_mmu_invlpg(emul_to_vcpu(ctxt), address);
 }
 
 int kvm_emulate_wbinvd(struct kvm_vcpu *vcpu)
@@ -4382,6 +4381,7 @@ static struct x86_emulate_ops emulate_ops = {
 	.read_emulated       = emulator_read_emulated,
 	.write_emulated      = emulator_write_emulated,
 	.cmpxchg_emulated    = emulator_cmpxchg_emulated,
+	.invlpg              = emulator_invlpg,
 	.pio_in_emulated     = emulator_pio_in_emulated,
 	.pio_out_emulated    = emulator_pio_out_emulated,
 	.get_cached_descriptor = emulator_get_cached_descriptor,