diff mbox series

[v2,02/10] s390x: smp: Dirty fpc before initial reset test

Message ID 20200423091013.11587-3-frankja@linux.ibm.com (mailing list archive)
State New, archived
Headers show
Series s390x: smp: Improve smp code part 2 | expand

Commit Message

Janosch Frank April 23, 2020, 9:10 a.m. UTC 
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>
Reviewed-by: David Hildenbrand <david@redhat.com>
---
 s390x/smp.c | 1 +
 1 file changed, 1 insertion(+)
diff mbox series

Patch

diff --git a/s390x/smp.c b/s390x/smp.c
index 8c9b98a..95df8c4 100644
--- a/s390x/smp.c
+++ b/s390x/smp.c
@@ -185,6 +185,7 @@  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" :: "d" (0x11));
 	lctlg(1, 0x42000UL);
 	lctlg(7, 0x43000UL);
 	lctlg(13, 0x44000UL);