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[v5,10/10] KVM: s390: selftest: memop: Fix integer literal

Message ID 20230110202632.2533978-11-scgl@linux.ibm.com
State New
Headers
Series KVM: s390: Extend MEM_OP ioctl by storage key checked cmpxchg |

Commit Message

Janis Schoetterl-Glausch Jan. 10, 2023, 8:26 p.m. UTC 
  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(-)
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Patch

diff --git a/tools/testing/selftests/kvm/s390x/memop.c b/tools/testing/selftests/kvm/s390x/memop.c
index 03f74c6c9fee..2173f7bca601 100644
--- a/tools/testing/selftests/kvm/s390x/memop.c
+++ b/tools/testing/selftests/kvm/s390x/memop.c
@@ -838,7 +838,7 @@  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 (;;) {