[PATCH 3.16 129/366] s390/ipl: ensure loadparm valid flag is set

Ben Hutchings
2018-10-14T23:34:47Z

From: Vasily Gorbik <gor@linux.ibm.com>

commit 15deb080a6087b73089139569558965750e69d67 upstream.

When loadparm is set in reipl parm block, the kernel should also set
DIAG308_FLAGS_LP_VALID flag.

This fixes loadparm ignoring during z/VM fcp -> ccw reipl and kvm direct
boot -> ccw reipl.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
[bwh: Backported to 3.16: adjust context]
Signed-off-by: Ben Hutchings <ben@decadent.org.uk>
---
arch/s390/kernel/ipl.c | 1 +
1 file changed, 1 insertion(+)

--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -825,6 +825,7 @@ static ssize_t reipl_generic_loadparm_st
/* copy and convert to ebcdic */
memcpy(ipb->ipl_info.ccw.load_parm, buf, lp_len);
ASCEBC(ipb->ipl_info.ccw.load_parm, LOADPARM_LEN);
+ ipb->hdr.flags |= DIAG308_FLAGS_LP_VALID;
return len;
}