KVM: fix sparse warnings: Should it be static?

Impact: Make symbols static.

Fix this sparse warnings:
  arch/x86/kvm/mmu.c:992:5: warning: symbol 'mmu_pages_add' was not declared. Should it be static?
  arch/x86/kvm/mmu.c:1124:5: warning: symbol 'mmu_pages_next' was not declared. Should it be static?
  arch/x86/kvm/mmu.c:1144:6: warning: symbol 'mmu_pages_clear_parents' was not declared. Should it be static?
  arch/x86/kvm/x86.c:2037:5: warning: symbol 'kvm_read_guest_virt' was not declared. Should it be static?
  arch/x86/kvm/x86.c:2067:5: warning: symbol 'kvm_write_guest_virt' was not declared. Should it be static?
  virt/kvm/irq_comm.c:220:5: warning: symbol 'setup_routing_entry' was not declared. Should it be static?
Signed-off-by: NHannes Eder <hannes@hanneseder.net>
Signed-off-by: NAvi Kivity <avi@redhat.com>

arch/x86/kvm/mmu.c

@@ -989,7 +989,7 @@ struct kvm_mmu_pages {
 	     idx < 512;					\
 	     idx = find_next_bit(bitmap, 512, idx+1))
 
-int mmu_pages_add(struct kvm_mmu_pages *pvec, struct kvm_mmu_page *sp,
+static int mmu_pages_add(struct kvm_mmu_pages *pvec, struct kvm_mmu_page *sp,
 			 int idx)
 {
 	int i;
@@ -1121,7 +1121,8 @@ struct mmu_page_path {
 			i < pvec.nr && ({ sp = pvec.page[i].sp; 1;});	\
 			i = mmu_pages_next(&pvec, &parents, i))
 
-int mmu_pages_next(struct kvm_mmu_pages *pvec, struct mmu_page_path *parents,
+static int mmu_pages_next(struct kvm_mmu_pages *pvec,
+			  struct mmu_page_path *parents,
 			  int i)
 {
 	int n;
@@ -1141,7 +1142,7 @@ int mmu_pages_next(struct kvm_mmu_pages *pvec, struct mmu_page_path *parents,
 	return n;
 }
 
-void mmu_pages_clear_parents(struct mmu_page_path *parents)
+static void mmu_pages_clear_parents(struct mmu_page_path *parents)
 {
 	struct kvm_mmu_page *sp;
 	unsigned int level = 0;

arch/x86/kvm/x86.c

@@ -2043,7 +2043,7 @@ static struct kvm_io_device *vcpu_find_mmio_dev(struct kvm_vcpu *vcpu,
 	return dev;
 }
 
-int kvm_read_guest_virt(gva_t addr, void *val, unsigned int bytes,
+static int kvm_read_guest_virt(gva_t addr, void *val, unsigned int bytes,
 			       struct kvm_vcpu *vcpu)
 {
 	void *data = val;
@@ -2073,7 +2073,7 @@ int kvm_read_guest_virt(gva_t addr, void *val, unsigned int bytes,
 	return r;
 }
 
-int kvm_write_guest_virt(gva_t addr, void *val, unsigned int bytes,
+static int kvm_write_guest_virt(gva_t addr, void *val, unsigned int bytes,
 				struct kvm_vcpu *vcpu)
 {
 	void *data = val;

virt/kvm/irq_comm.c

@@ -233,7 +233,7 @@ void kvm_free_irq_routing(struct kvm *kvm)
 	__kvm_free_irq_routing(&kvm->irq_routing);
 }
 
-int setup_routing_entry(struct kvm_kernel_irq_routing_entry *e,
+static int setup_routing_entry(struct kvm_kernel_irq_routing_entry *e,
 			       const struct kvm_irq_routing_entry *ue)
 {
 	int r = -EINVAL;