[PATCH 4.15 45/53] s390/ipl: ensure loadparm valid flag is set

From: Greg Kroah-Hartman
Date: Tue Apr 17 2018 - 12:05:36 EST

4.15-stable review patch. If anyone has any objections, please let me know.


From: Vasily Gorbik <gor@xxxxxxxxxxxxx>

commit 15deb080a6087b73089139569558965750e69d67 upstream.

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

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

Cc: <stable@xxxxxxxxxxxxxxx>
Reviewed-by: Heiko Carstens <heiko.carstens@xxxxxxxxxx>
Signed-off-by: Vasily Gorbik <gor@xxxxxxxxxxxxx>
Signed-off-by: Martin Schwidefsky <schwidefsky@xxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>

arch/s390/kernel/ipl.c | 1 +
1 file changed, 1 insertion(+)

--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -779,6 +779,7 @@ static ssize_t reipl_generic_loadparm_st
/* copy and convert to ebcdic */
memcpy(ipb->hdr.loadparm, buf, lp_len);
ASCEBC(ipb->hdr.loadparm, LOADPARM_LEN);
+ ipb->hdr.flags |= DIAG308_FLAGS_LP_VALID;
return len;