Test that key-controlled protection does not apply to diag 308. Signed-off-by: Janis Schoetterl-Glausch <scgl@xxxxxxxxxxxxx> --- s390x/skey.c | 26 ++++++++++++++++++++++++++ 1 file changed, 26 insertions(+) diff --git a/s390x/skey.c b/s390x/skey.c index a55034b5..074667e2 100644 --- a/s390x/skey.c +++ b/s390x/skey.c @@ -300,6 +300,31 @@ static void test_store_cpu_address(void) report_prefix_pop(); } +static void test_diag_308(void) +{ + uint16_t response; + uint32_t *ipib = (uint32_t *)pagebuf; + + report_prefix_push("DIAG 308"); + WRITE_ONCE(ipib[0], 0); /* Invalid length */ + set_storage_key(ipib, 0x28, 0); + /* key-controlled protection does not apply */ + asm volatile ( + "lr %%r2,%[ipib]\n\t" + "spka 0x10\n\t" + "diag %%r2,%[code],0x308\n\t" + "spka 0\n\t" + "lr %[response],%%r3\n" + : [response] "=d" (response) + : [ipib] "d" (ipib), + [code] "d" (5) + : "%r2", "%r3" + ); + report(response == 0x402, "no exception on fetch, response: invalid IPIB"); + set_storage_key(ipib, 0x00, 0); + report_prefix_pop(); +} + /* * Perform CHANNEL SUBSYSTEM CALL (CHSC) instruction while temporarily executing * with access key 1. @@ -712,6 +737,7 @@ int main(void) test_chg(); test_test_protection(); test_store_cpu_address(); + test_diag_308(); test_channel_subsystem_call(); setup_vm(); -- 2.33.1