KVM: selftests: Make __vm_get_page_table_entry() static

The function is only used in processor.c, drop the declaration in
processor.h and make it static.

No functional change intended.

Signed-off-by: Yosry Ahmed <yosry.ahmed@linux.dev>
Link: https://patch.msgid.link/20251230230150.4150236-2-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

Author: yosrym93

tools/testing/selftests/kvm/include/x86/processor.h

@@ -1369,8 +1369,6 @@ static inline bool kvm_is_ignore_msrs(void)
 	return get_kvm_param_bool("ignore_msrs");
 }
 
-uint64_t *__vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr,
-				    int *level);
 uint64_t *vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr);
 
 uint64_t kvm_hypercall(uint64_t nr, uint64_t a0, uint64_t a1, uint64_t a2,

tools/testing/selftests/kvm/lib/x86/processor.c

@@ -306,8 +306,8 @@ static bool vm_is_target_pte(uint64_t *pte, int *level, int current_level)
 	return *level == current_level;
 }
 
-uint64_t *__vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr,
-				    int *level)
+static uint64_t *__vm_get_page_table_entry(struct kvm_vm *vm, uint64_t vaddr,
+					   int *level)
 {
 	int va_width = 12 + (vm->pgtable_levels) * 9;
 	uint64_t *pte = &vm->pgd;