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authorMartin Schwidefsky <schwidefsky@de.ibm.com>2010-10-25 16:10:13 +0200
committerMartin Schwidefsky <sky@mschwide.boeblingen.de.ibm.com>2010-10-25 16:10:15 +0200
commit92f842eac7ee321c8a0749aba2513541b4ac226f (patch)
tree06a9c2302729ecd6d2941f8629da1646c11c714c /arch/s390/include
parent6931be0803ddae2791f3c646c8e1e0f82ca26013 (diff)
downloadlinux-linaro-android-92f842eac7ee321c8a0749aba2513541b4ac226f.tar.gz
[S390] store indication fault optimization
Use the store indication bit in the translation exception code on page faults to avoid the protection faults that immediatly follow the page fault if the access has been a write. Signed-off-by: Martin Schwidefsky <schwidefsky@de.ibm.com>
Diffstat (limited to 'arch/s390/include')
-rw-r--r--arch/s390/include/asm/pgtable.h1
1 files changed, 1 insertions, 0 deletions
diff --git a/arch/s390/include/asm/pgtable.h b/arch/s390/include/asm/pgtable.h
index 785229ae39c..85cd4b039de 100644
--- a/arch/s390/include/asm/pgtable.h
+++ b/arch/s390/include/asm/pgtable.h
@@ -38,6 +38,7 @@
extern pgd_t swapper_pg_dir[] __attribute__ ((aligned (4096)));
extern void paging_init(void);
extern void vmem_map_init(void);
+extern void fault_init(void);
/*
* The S390 doesn't have any external MMU info: the kernel page