iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

s390/dump: fix os_info virtual vs physical address confusion

Browse Source 
[ Upstream commit 9de209c7d584d6e06ad92f120d83d4f27c200497 ]

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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Alexander Gordeev 2022-01-26 13:47:59 +01:00 committed by Greg Kroah-Hartman
parent cf0e42eb04
commit 9287df4362
1 changed files with 2 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

4
arch/s390/kernel/os_info.c
View File

@ -46,7 +46,7 @@ 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);
@ -63,7 +63,7 @@ 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