linux/arch/s390/mm
Martin Schwidefsky 0f6f281b73 s390/mm: downgrade page table after fork of a 31 bit process
The downgrade of the 4 level page table created by init_new_context is
currently done only in start_thread31. If a 31 bit process forks the
new mm uses a 4 level page table, including the task size of 2<<42
that goes along with it. This is incorrect as now a 31 bit process
can map memory beyond 2GB. Define arch_dup_mmap to do the downgrade
after fork.

Cc: stable@vger.kernel.org
Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
2012-07-26 16:24:14 +02:00
..
cmm.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
extmem.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
fault.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
gup.c thp: share get_huge_page_tail() 2011-11-02 16:06:58 -07:00
hugetlbpage.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
init.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00
maccess.c s390/kernel: Introduce memcpy_absolute() function 2012-05-30 09:04:49 +02:00
Makefile [S390] Write protect module text and RO data 2011-03-15 17:08:23 +01:00
mmap.c s390/mm: downgrade page table after fork of a 31 bit process 2012-07-26 16:24:14 +02:00
page-states.c include cleanup: Update gfp.h and slab.h includes to prepare for breaking implicit slab.h inclusion from percpu.h 2010-03-30 22:02:32 +09:00
pageattr.c [S390] sparse: fix sparse warnings about missing prototypes 2011-10-30 15:16:46 +01:00
pgtable.c s390/mm: downgrade page table after fork of a 31 bit process 2012-07-26 16:24:14 +02:00
vmem.c s390/comments: unify copyright messages and remove file names 2012-07-20 11:15:04 +02:00