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
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asm	s390/mm: downgrade page table after fork of a 31 bit process	2012-07-26 16:24:14 +02:00