From 9de209c7d584d6e06ad92f120d83d4f27c200497 Mon Sep 17 00:00:00 2001
From: Alexander Gordeev <agordeev@linux.ibm.com>
Date: Wed, 26 Jan 2022 13:47:59 +0100
Subject: [PATCH] s390/dump: fix os_info virtual vs physical address confusion
Due to historical reasons os_info handling functions misuse
the notion of physical vs virtual addresses difference.
Note: this does not fix a bug currently, since virtual
and physical addresses are identical.
Reviewed-by: Heiko Carstens <hca@linux.ibm.com>
Signed-off-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
---
arch/s390/kernel/os_info.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/s390/kernel/os_info.c b/arch/s390/kernel/os_info.c
index 4bef35b79b938..fa2be71b2c6bb 100644
--- a/arch/s390/kernel/os_info.c
+++ b/arch/s390/kernel/os_info.c
@@ -45,7 +45,7 @@ void os_info_crashkernel_add(unsigned long base, unsigned long size)
*/
void os_info_entry_add(int nr, void *ptr, u64 size)
{
- os_info.entry[nr].addr = (u64)(unsigned long)ptr;
+ os_info.entry[nr].addr = __pa(ptr);
os_info.entry[nr].size = size;
os_info.entry[nr].csum = (__force u32)csum_partial(ptr, size, 0);
os_info.csum = os_info_csum(&os_info);
@@ -62,7 +62,7 @@ void __init os_info_init(void)
os_info.version_minor = OS_INFO_VERSION_MINOR;
os_info.magic = OS_INFO_MAGIC;
os_info.csum = os_info_csum(&os_info);
- mem_assign_absolute(S390_lowcore.os_info, (unsigned long) ptr);
+ mem_assign_absolute(S390_lowcore.os_info, __pa(ptr));
}
#ifdef CONFIG_CRASH_DUMP
--
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