openkylin
/
linux
mirror of https://gitee.com/openkylin/linux.git
9
0
Fork 0
Code Issues Projects Releases Wiki Activity

s390/kasan: add support for mem= kernel parameter 

Handle mem= kernel parameter in kasan to limit physical memory.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
This commit is contained in:
Vasily Gorbik 2018-09-26 13:46:26 +02:00 committed by Martin Schwidefsky
parent 12e55fa194
commit 78333d1f90
1 changed files with 3 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
arch/s390/mm/kasan_init.c
View File

@ -268,6 +268,9 @@ void __init kasan_early_init(void)
memsize = get_mem_detect_end();
if (!memsize)
kasan_early_panic("cannot detect physical memory size\n");
/* respect mem= cmdline parameter */
if (memory_end_set && memsize > memory_end)
memsize = memory_end;
memsize = min(memsize, KASAN_SHADOW_START);
if (IS_ENABLED(CONFIG_KASAN_S390_4_LEVEL_PAGING)) {