From: Vasily Gorbik <gor@linux.ibm.com>
Date: Tue, 3 Apr 2018 16:02:15 +0200
Subject: s390/ipl: ensure loadparm valid flag is set
Git-commit: 15deb080a6087b73089139569558965750e69d67
Patch-mainline: v4.17-rc1
References: bsc#1103421

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.

Cc: <stable@vger.kernel.org>
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>
Acked-by: Johannes Thumshirn <jthumshirn@suse.de>
---
 arch/s390/kernel/ipl.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/s390/kernel/ipl.c b/arch/s390/kernel/ipl.c
index 34477c1aee6d..502c90525a0e 100644
--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -776,6 +776,7 @@ static ssize_t reipl_generic_loadparm_store(struct ipl_parameter_block *ipb,
 	/* 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;
 }