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authorMichael Ellerman <michael@ozlabs.org>2011-04-12 19:00:04 +0000
committerBenjamin Herrenschmidt <benh@kernel.crashing.org>2011-04-20 16:59:20 +1000
commit5e8e7b404ac965be45e25d5538676151de89aefb (patch)
treecd52be505e33150a2bd2afb271ee6e93b2984498
parentaf2771493a1bf79cd9a1ab4f30327c428b5bd67c (diff)
downloadlinux-5e8e7b404ac965be45e25d5538676151de89aefb.tar.bz2
powerpc/mm: Standardise on MMU_NO_CONTEXT
Use MMU_NO_CONTEXT as the initialiser for mm_context.id on nohash and hash64. Signed-off-by: Michael Ellerman <michael@ellerman.id.au> Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
-rw-r--r--arch/powerpc/include/asm/tlbflush.h2
-rw-r--r--arch/powerpc/mm/mmu_context_hash64.c3
2 files changed, 3 insertions, 2 deletions
diff --git a/arch/powerpc/include/asm/tlbflush.h b/arch/powerpc/include/asm/tlbflush.h
index d50a380b2b6f..81143fcbd113 100644
--- a/arch/powerpc/include/asm/tlbflush.h
+++ b/arch/powerpc/include/asm/tlbflush.h
@@ -79,6 +79,8 @@ static inline void local_flush_tlb_mm(struct mm_struct *mm)
#elif defined(CONFIG_PPC_STD_MMU_64)
+#define MMU_NO_CONTEXT 0
+
/*
* TLB flushing for 64-bit hash-MMU CPUs
*/
diff --git a/arch/powerpc/mm/mmu_context_hash64.c b/arch/powerpc/mm/mmu_context_hash64.c
index 2535828aa84b..c5859448a0ab 100644
--- a/arch/powerpc/mm/mmu_context_hash64.c
+++ b/arch/powerpc/mm/mmu_context_hash64.c
@@ -31,7 +31,6 @@ static DEFINE_IDA(mmu_context_ida);
* Each segment contains 2^28 bytes. Each context maps 2^44 bytes,
* so we can support 2^19-1 contexts (19 == 35 + 28 - 44).
*/
-#define NO_CONTEXT 0
#define MAX_CONTEXT ((1UL << 19) - 1)
int __init_new_context(void)
@@ -95,5 +94,5 @@ void destroy_context(struct mm_struct *mm)
{
__destroy_context(mm->context.id);
subpage_prot_free(mm);
- mm->context.id = NO_CONTEXT;
+ mm->context.id = MMU_NO_CONTEXT;
}