[kvm-unit-tests PATCH v2 3/8] s390x: uv-host: Test uv immediate parameter

Janosch Frank
2022-07-06T06:41:23Z

Let's check if we get a specification PGM exception if we set a
non-zero i3 when doing a UV call.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
---
s390x/uv-host.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)

diff --git a/s390x/uv-host.c b/s390x/uv-host.c
index 5aeacb42..0762e690 100644
--- a/s390x/uv-host.c
+++ b/s390x/uv-host.c
@@ -82,6 +82,28 @@ static struct cmd_list cmds[] = {
{ NULL, 0, 0 },
};

+static void test_i3(void)
+{
+ struct uv_cb_header uvcb = {
+ .cmd = UVC_CMD_INIT_UV,
+ .len = sizeof(struct uv_cb_init),
+ };
+ unsigned long r1 = 0;
+ int cc;
+
+ report_prefix_push("i3");
+ expect_pgm_int();
+ asm volatile(
+ "0: .insn rrf,0xB9A40000,%[r1],%[r2],4,2\n"
+ " ipm %[cc]\n"
+ " srl %[cc],28\n"
+ : [cc] "=d" (cc)
+ : [r1] "a" (r1), [r2] "a" (&uvcb)
+ : "memory", "cc");
+ check_pgm_int_code(PGM_INT_CODE_SPECIFICATION);
+ report_prefix_pop();
+}
+
static void test_priv(void)
{
struct uv_cb_header uvcb = {};
@@ -577,6 +599,7 @@ int main(void)
goto done;
}

+ test_i3();
test_priv();
test_invalid();
test_uv_uninitialized();
--
2.34.1