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| author | Vasily Gorbik | 2019-08-02 17:44:29 +0200 |
|---|---|---|
| committer | Vasily Gorbik | 2019-08-06 13:58:34 +0200 |
| commit | 218ddd5acfeae9e19a2fa97c284bf3c2e9de8ebd (patch) | |
| tree | 066d640c9289dd5e91cb7858ce32511d9d681e38 /arch/s390 | |
| parent | s390/mm: fix dump_pagetables top level page table walking (diff) | |
| download | kernel-qcow2-linux-218ddd5acfeae9e19a2fa97c284bf3c2e9de8ebd.tar.gz kernel-qcow2-linux-218ddd5acfeae9e19a2fa97c284bf3c2e9de8ebd.tar.xz kernel-qcow2-linux-218ddd5acfeae9e19a2fa97c284bf3c2e9de8ebd.zip | |
s390/setup: adjust start_code of init_mm to _text
After some investigation it doesn't look like init_mm fields
start_code/end_code are used anywhere besides potentially in dump_mm for
debugging purposes. Originally the value of 0 for start_code reflected
the presence of lowcore and early boot code. But with kaslr in place
start_code/end_code range should not span over unoccupied by the code
segment memory. So, adjust init_mm start_code to point at the beginning
of the code segment like other architectures do it.
Acked-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Diffstat (limited to 'arch/s390')
| -rw-r--r-- | arch/s390/kernel/setup.c | 3 |
1 files changed, 1 insertions, 2 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index 2b94b0ad3588..253177900950 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -1114,8 +1114,7 @@ void __init setup_arch(char **cmdline_p) ROOT_DEV = Root_RAM0; - /* Is init_mm really needed? */ - init_mm.start_code = PAGE_OFFSET; + init_mm.start_code = (unsigned long) _text; init_mm.end_code = (unsigned long) _etext; init_mm.end_data = (unsigned long) _edata; init_mm.brk = (unsigned long) _end; |