diff options
| author | Heiko Carstens <heiko.carstens@de.ibm.com> | 2007-02-21 10:55:37 +0100 |
|---|---|---|
| committer | Martin Schwidefsky <schwidefsky@de.ibm.com> | 2007-02-21 10:55:37 +0100 |
| commit | 615b04b301fd4e1b7680a498b873c4ae9baad92f (patch) | |
| tree | 8f6ad0f048507858cfbdfef3f2dee5c7cffe3bbe /arch/s390/kernel/setup.c | |
| parent | 229d9c6dfb2900559449575a56dc8abcaf0bce9d (diff) | |
[S390] nss: Free unused memory in kernel image.
With CONFIG_SHARED_KERNEL the kernel text segment that might be in a
read only memory sections starts at 1MB. Memory between 0x12000 and
0x100000 is unused then. Free this, so we have appr. an extra MB
of memory available.
Signed-off-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/kernel/setup.c')
| -rw-r--r-- | arch/s390/kernel/setup.c | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/arch/s390/kernel/setup.c b/arch/s390/kernel/setup.c index fced022dc58..863c8d08c02 100644 --- a/arch/s390/kernel/setup.c +++ b/arch/s390/kernel/setup.c @@ -690,9 +690,14 @@ setup_memory(void) psw_set_key(PAGE_DEFAULT_KEY); free_bootmem_with_active_regions(0, max_pfn); - reserve_bootmem(0, PFN_PHYS(start_pfn)); /* + * Reserve memory used for lowcore/command line/kernel image. + */ + reserve_bootmem(0, (unsigned long)_ehead); + reserve_bootmem((unsigned long)_stext, + PFN_PHYS(start_pfn) - (unsigned long)_stext); + /* * Reserve the bootmem bitmap itself as well. We do this in two * steps (first step was init_bootmem()) because this catches * the (very unlikely) case of us accidentally initializing the |