[kvm-unit-tests PATCH v2 7/7] s390x: smp: Dirty fpc before initial reset test

Janosch Frank
2020-01-16T12:05:37Z

Let's dirty the fpc, before we test if the initial reset sets it to 0.

Signed-off-by: Janosch Frank <frankja@linux.ibm.com>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Reviewed-by: Cornelia Huck <cohuck@redhat.com>
---
s390x/smp.c | 3 +++
1 file changed, 3 insertions(+)

diff --git a/s390x/smp.c b/s390x/smp.c
index ce3215d..97a9dda 100644
--- a/s390x/smp.c
+++ b/s390x/smp.c
@@ -179,6 +179,9 @@ static void test_emcall(void)
/* Used to dirty registers of cpu #1 before it is reset */
static void test_func_initial(void)
{
+ asm volatile(
+ " sfpc %0\n"
+ : : "d" (0x11) : );
lctlg(1, 0x42000UL);
lctlg(7, 0x43000UL);
lctlg(13, 0x44000UL);
--
2.20.1