[PATCH 5.10 301/406] s390/ipl: add missing secure/has_secure file to ipl type unknown

Greg Kroah-Hartman
2023-09-17T19:37:32Z

From: Sven Schnelle <svens@linux.ibm.com>

commit ea5717cb13468323a7c3dd394748301802991f39 upstream.

OS installers are relying on /sys/firmware/ipl/has_secure to be
present on machines supporting secure boot. This file is present
for all IPL types, but not the unknown type, which prevents a secure
installation when an LPAR is booted in HMC via FTP(s), because
this is an unknown IPL type in linux. While at it, also add the secure
file.

Fixes: c9896acc7851 ("s390/ipl: Provide has_secure sysfs attribute")
Cc: stable@vger.kernel.org
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
---
arch/s390/kernel/ipl.c | 2 ++
1 file changed, 2 insertions(+)

--- a/arch/s390/kernel/ipl.c
+++ b/arch/s390/kernel/ipl.c
@@ -501,6 +501,8 @@ static struct attribute_group ipl_ccw_at

static struct attribute *ipl_unknown_attrs[] = {
&sys_ipl_type_attr.attr,
+ &sys_ipl_secure_attr.attr,
+ &sys_ipl_has_secure_attr.attr,
NULL,
};