diff options
| author |   Vasily Gorbik <gor@linux.ibm.com> | 2018-09-26 13:46:26 +0200 |
|---|---|---|
| committer |   Martin Schwidefsky <schwidefsky@de.ibm.com> | 2018-10-09 11:21:35 +0200 |
| commit | 78333d1f908a25c9565d7518966cef717279fe32 (patch) | |
| tree | 7b1fc4746a7c9dbbd72aa4579e7009b3d5129fe4 /arch/s390/mm | |
| parent | s390/kasan: optimize kasan vmemmap allocation (diff) | |
| download | linux-dev-78333d1f908a25c9565d7518966cef717279fe32.tar.xz linux-dev-78333d1f908a25c9565d7518966cef717279fe32.zip | |
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>
Diffstat (limited to 'arch/s390/mm')
| -rw-r--r-- | arch/s390/mm/kasan_init.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/arch/s390/mm/kasan_init.c b/arch/s390/mm/kasan_init.c index 5b253247bc97..55982142b2b5 100644 --- a/arch/s390/mm/kasan_init.c +++ b/arch/s390/mm/kasan_init.c @@ -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)) { |