s390/startup: round down "mem" option to page boundary

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Make a usable value out of "mem" option once and for all. Kasan memory
allocator just takes memory_end or online memory size as allocation
base. If memory_end is not aligned paging structures allocated in kasan
end up unaligned as well. So this change fixes potential kasan crash
as well.

Fixes: 78333d1f90 ("s390/kasan: add support for mem= kernel parameter")
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>

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Vasily Gorbik 2019-08-16 10:43:55 +02:00

parent 80ef517b01

commit 22a33c7e4e

1 changed files with 1 additions and 1 deletions

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arch/s390/boot/ipl_parm.c

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