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Christian Borntraeger 250cf776f7 [S390] pgtables: Fix race in enable_sie vs. page table ops ... The current enable_sie code sets the mm->context.pgstes bit to tell dup_mm that the new mm should have extended page tables. This bit is also used by the s390 specific page table primitives to decide about the page table layout - which means context.pgstes has two meanings. This can cause any kind of bugs. For example - e.g. shrink_zone can call ptep_clear_flush_young while enable_sie is running. ptep_clear_flush_young will test for context.pgstes. Since enable_sie changed that value of the old struct mm without changing the page table layout ptep_clear_flush_young will do the wrong thing. The solution is to split pgstes into two bits - one for the allocation - one for the current state Signed-off-by: Christian Borntraeger <borntraeger@de.ibm.com> Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>		17 years ago
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Makefile	…
cmm.c	…
extmem.c	…
fault.c	…
hugetlbpage.c	…
init.c	mm: cleanup to make remove_memory() arch-neutral	17 years ago
mmap.c	…
page-states.c	…
pgtable.c	[S390] pgtables: Fix race in enable_sie vs. page table ops	17 years ago
vmem.c	…