From: Sven Schnelle <svens@linux.ibm.com>
Date: Mon, 22 Jul 2024 13:41:28 +0000 (+0200)
Subject: s390/boot: Add cmdline option to relocate lowcore
X-Git-Tag: v6.11-rc1~34^2~1
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=8f1e70adb1a3ecb982bb6c475209b080bf985074;p=thirdparty%2Fkernel%2Flinux.git

s390/boot: Add cmdline option to relocate lowcore

Now that everything has been converted, add the option
'relocate_lowcore' to enable relocating the lowcore.

Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Sven Schnelle <svens@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
---

diff --git a/arch/s390/boot/ipl_parm.c b/arch/s390/boot/ipl_parm.c
index 337c14931ccbf..1773b72a6a7bc 100644
--- a/arch/s390/boot/ipl_parm.c
+++ b/arch/s390/boot/ipl_parm.c
@@ -311,5 +311,7 @@ void parse_boot_command_line(void)
 				prot_virt_host = 1;
 		}
 #endif
+		if (!strcmp(param, "relocate_lowcore") && test_facility(193))
+			relocate_lowcore = 1;
 	}
 }