s390/nmi: purge tlbs after control register validation

Play safe and purge all tlbs after the control registers that contain
the primary, secondary and home space asces have been validated.

Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/kernel/nmi.c b/arch/s390/kernel/nmi.c
index b76b5fef251e1ad211ac78017ef7d3704541e0bb..80c093e0c6f1a3ef56fcc38e04d1af9a076f427f 100644 (file)
--- a/arch/s390/kernel/nmi.c
+++ b/arch/s390/kernel/nmi.c
@@ -125,7 +125,8 @@ static int notrace s390_validate_registers(union mci mci, int umode)
                s390_handle_damage();
        } else {
                asm volatile(
-                       "       lctlg   0,15,0(%0)"
+                       "       lctlg   0,15,0(%0)\n"
+                       "       ptlb\n"
                        : : "a" (&S390_lowcore.cregs_save_area) : "memory");
        }
        if (!mci.fp) {