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s390: move vmalloc option parsing to startup code

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Few other crucial memory setup options are already handled in
the startup code. Those values are needed by kaslr and kasan
implementations. "vmalloc" is the last piece required for future
improvements such as early decision on kernel page levels depth required
for actual memory setup, as well as vmalloc memory area access monitoring
in kasan.

Reviewed-by: Heiko Carstens <heiko.carstens@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
This commit is contained in:
Vasily Gorbik
2019-08-02 12:28:20 +02:00
parent f62f7dcbf0
commit 59793c5ab9
4 changed files with 9 additions and 11 deletions
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arch/s390/include/asm/setup.h
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@@ -83,6 +83,7 @@ struct parmarea {
extern int noexec_disabled;
extern int memory_end_set;
extern unsigned long memory_end;
extern unsigned long vmalloc_size;
extern unsigned long max_physmem_end;
#define MACHINE_IS_VM (S390_lowcore.machine_flags & MACHINE_FLAG_VM)