[PATCH v6 07/14] KVM: s390: selftest: memop: Fix integer literal

Janis Schoetterl-Glausch
2023-01-25T21:26:33Z

The address is a 64 bit value, specifying a 32 bit value can crash the
guest. In this case things worked out with -O2 but not -O0.

Signed-off-by: Janis Schoetterl-Glausch <scgl@linux.ibm.com>
Fixes: 1bb873495a9e ("KVM: s390: selftests: Add more copy memop tests")
---
tools/testing/selftests/kvm/s390x/memop.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c
index 3ec501881c7c..55b856c4d656 100644
--- a/tools/testing/selftests/kvm/s390x/memop.c
+++ b/tools/testing/selftests/kvm/s390x/memop.c
@@ -514,7 +514,7 @@ static void guest_copy_key_fetch_prot_override(void)
GUEST_SYNC(STAGE_INITED);
set_storage_key_range(0, PAGE_SIZE, 0x18);
set_storage_key_range((void *)last_page_addr, PAGE_SIZE, 0x0);
- asm volatile ("sske %[key],%[addr]\n" :: [addr] "r"(0), [key] "r"(0x18) : "cc");
+ asm volatile ("sske %[key],%[addr]\n" :: [addr] "r"(0L), [key] "r"(0x18) : "cc");
GUEST_SYNC(STAGE_SKEYS_SET);

for (;;) {
--
2.34.1