From 9916bf4edac6f8f499ce7c42dafb57e242865790 Mon Sep 17 00:00:00 2001
From: Alexander Gordeev <agordeev@linux.ibm.com>
Date: Wed, 5 Jul 2023 14:17:11 +0200
Subject: [PATCH] s390/extmem: improve reporting of -ERANGE error
Interface segment_warning() reports maximum mappable physical
address for -ERANGE error. Currently that address is the value
of VMEM_MAX_PHYS macro, but that well might change. A better
way to obtain that address is calling arch_get_mappable_range()
callback - one that is used by vmem_add_mapping() and generates
-ERANGE error in the first place.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
---
arch/s390/mm/extmem.c | 9 ++++++---
1 file changed, 6 insertions(+), 3 deletions(-)
diff --git a/arch/s390/mm/extmem.c b/arch/s390/mm/extmem.c
index 1bc42ce265990..e41869f5cc95d 100644
--- a/arch/s390/mm/extmem.c
+++ b/arch/s390/mm/extmem.c
@@ -640,10 +640,13 @@ void segment_warning(int rc, char *seg_name)
pr_err("There is not enough memory to load or query "
"DCSS %s\n", seg_name);
break;
- case -ERANGE:
- pr_err("DCSS %s exceeds the kernel mapping range (%lu) "
- "and cannot be loaded\n", seg_name, VMEM_MAX_PHYS);
+ case -ERANGE: {
+ struct range mhp_range = arch_get_mappable_range();
+
+ pr_err("DCSS %s exceeds the kernel mapping range (%llu) "
+ "and cannot be loaded\n", seg_name, mhp_range.end + 1);
break;
+ }
default:
break;
}
--
GitLab