[S390] Use IPL CLEAR for reipl under z/VM

If we use the CLEAR ipl option, reipl is faster, since then VM can release
the memory, which has been paged out.

Signed-off-by: Michael Holzheu <holzheu@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 8b8f136d9cc76b582a96699bdb76a9c3a491760e..66b51901c87d29be81d8c25cc0b8546ae1e970b1 100644 (file)
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -735,10 +735,10 @@ void do_reipl(void)
        case REIPL_METHOD_CCW_VM:
                reipl_get_ascii_loadparm(loadparm);
                if (strlen(loadparm) == 0)
-                       sprintf(buf, "IPL %X",
+                       sprintf(buf, "IPL %X CLEAR",
                                reipl_block_ccw->ipl_info.ccw.devno);
                else
-                       sprintf(buf, "IPL %X LOADPARM '%s'",
+                       sprintf(buf, "IPL %X CLEAR LOADPARM '%s'",
                                reipl_block_ccw->ipl_info.ccw.devno, loadparm);
                __cpcmd(buf, NULL, 0, NULL);
                break;