Commit dc55ceae authored by Janis Schoetterl-Glausch's avatar Janis Schoetterl-Glausch Committed by Janosch Frank
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KVM: s390: selftest: memop: Fix integer literal 



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: default avatarJanis Schoetterl-Glausch <scgl@linux.ibm.com>
Fixes: 1bb87349 ("KVM: s390: selftests: Add more copy memop tests")
Reviewed-by: default avatarThomas Huth <thuth@redhat.com>
Link: https://lore.kernel.org/r/20230206164602.138068-8-scgl@linux.ibm.com


Message-Id: <20230206164602.138068-8-scgl@linux.ibm.com>
Signed-off-by: default avatarJanosch Frank <frankja@linux.ibm.com>
parent 12c12a99

tools/testing/selftests/kvm/s390x/memop.c

+1 −1
Original line number Diff line number Diff line
@@ -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 (;;) {