| commit | 22a33c7e4ed6aae8c47de72461162021dad87473 | [log] [tgz] |
|---|---|---|
| author | Vasily Gorbik <gor@linux.ibm.com> | Fri Aug 16 10:43:55 2019 +0200 |
| committer | Vasily Gorbik <gor@linux.ibm.com> | Wed Aug 21 12:58:53 2019 +0200 |
| tree | 2d63962fbdb65ce30a2bd0c41cbe8e9652d72489 | |
| parent | 80ef517b018257220f14410004ede094c577c276 [diff] |
s390/startup: round down "mem" option to page boundary
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: 78333d1f908a ("s390/kasan: add support for mem= kernel parameter")
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>