s390/kasan: free early identity mapping structures

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Kasan initialization code is changed to populate persistent shadow
first, save allocator position into pgalloc_freeable and proceed with
early identity mapping creation. This way early identity mapping paging
structures could be freed at once after switching to swapper_pg_dir
when early identity mapping is not needed anymore.

Reviewed-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Signed-off-by: Vasily Gorbik <gor@linux.ibm.com>
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>

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Vasily Gorbik 2017-11-20 12:56:10 +01:00 • committed by Martin Schwidefsky

parent 5e78596329

commit 135ff16393

3 changed files with 13 additions and 2 deletions

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2

arch/s390/include/asm/kasan.h

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1

arch/s390/mm/init.c

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12

arch/s390/mm/kasan_init.c

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