kvm: selftests: aarch64: compile with warnings on

aarch64 fixups needed to compile with warnings as errors.
Reviewed-by: Thomas Huth <thuth@redhat.com>
Signed-off-by: Andrew Jones <drjones@redhat.com>
Signed-off-by: Paolo Bonzini <pbonzini@redhat.com>

tools/testing/selftests/kvm/lib/aarch64/processor.c

@@ -7,6 +7,8 @@
 
 #define _GNU_SOURCE /* for program_invocation_name */
 
+#include <linux/compiler.h>
+
 #include "kvm_util.h"
 #include "../kvm_util_internal.h"
 #include "processor.h"
@@ -67,15 +69,13 @@ static uint64_t ptrs_per_pgd(struct kvm_vm *vm)
 	return 1 << (vm->va_bits - shift);
 }
 
-static uint64_t ptrs_per_pte(struct kvm_vm *vm)
+static uint64_t __maybe_unused ptrs_per_pte(struct kvm_vm *vm)
 {
 	return 1 << (vm->page_shift - 3);
 }
 
 void virt_pgd_alloc(struct kvm_vm *vm, uint32_t pgd_memslot)
 {
-	int rc;
-
 	if (!vm->pgd_created) {
 		vm_paddr_t paddr = vm_phy_pages_alloc(vm,
 			page_align(vm, ptrs_per_pgd(vm) * 8) / vm->page_size,
@@ -181,6 +181,7 @@ vm_paddr_t addr_gva2gpa(struct kvm_vm *vm, vm_vaddr_t gva)
 unmapped_gva:
 	TEST_ASSERT(false, "No mapping for vm virtual address, "
 		    "gva: 0x%lx", gva);
+	exit(1);
 }
 
 static void pte_dump(FILE *stream, struct kvm_vm *vm, uint8_t indent, uint64_t page, int level)
@@ -312,6 +313,6 @@ void vcpu_dump(FILE *stream, struct kvm_vm *vm, uint32_t vcpuid, uint8_t indent)
 	get_reg(vm, vcpuid, ARM64_CORE_REG(regs.pstate), &pstate);
 	get_reg(vm, vcpuid, ARM64_CORE_REG(regs.pc), &pc);
 
-	fprintf(stream, "%*spstate: 0x%.16llx pc: 0x%.16llx\n",
+	fprintf(stream, "%*spstate: 0x%.16lx pc: 0x%.16lx\n",
 		indent, "", pstate, pc);
 }