On Thu, 14 Apr 2022 12:30:31 +0200 Thomas Huth thuth@redhat.com wrote:

When compiling kvm_page_table_test.c, I get this compiler warning with gcc 11.2:

kvm_page_table_test.c: In function 'pre_init_before_test': ../../../../tools/include/linux/kernel.h:44:24: warning: comparison of distinct pointer types lacks a cast 44 | (void) (&_max1 == &_max2); \ | ^~ kvm_page_table_test.c:281:21: note: in expansion of macro 'max' 281 | alignment = max(0x100000, alignment); | ^~~

Fix it by adjusting the type of the absolute value.

Signed-off-by: Thomas Huth thuth@redhat.com

Reviewed-by: Claudio Imbrenda imbrenda@linux.ibm.com

---

tools/testing/selftests/kvm/kvm_page_table_test.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/kvm_page_table_test.c b/tools/testing/selftests/kvm/kvm_page_table_test.c index ba1fdc3dcf4a..2c4a7563a4f8 100644 --- a/tools/testing/selftests/kvm/kvm_page_table_test.c +++ b/tools/testing/selftests/kvm/kvm_page_table_test.c @@ -278,7 +278,7 @@ static struct kvm_vm *pre_init_before_test(enum vm_guest_mode mode, void *arg) else guest_test_phys_mem = p->phys_offset; #ifdef __s390x__

• alignment = max(0x100000, alignment);

• alignment = max(0x100000UL, alignment);

#endif guest_test_phys_mem = align_down(guest_test_phys_mem, alignment);