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authorLinus Torvalds <torvalds@linux-foundation.org>2008-11-01 09:51:51 -0700
committerLinus Torvalds <torvalds@linux-foundation.org>2008-11-01 09:51:51 -0700
commit0242909a6135e10a28822c64f9ad50fdad52757c (patch)
treec5f9c8abe95a65433e6ac356871f2379c02488fe /arch/cris/include/arch-v32/arch/tlb.h
parent0a6d2fac615972142715d736289abeeb7382e81d (diff)
parent556dcee7b829e5c350c3ffdbdb87a8b15aa3c5d3 (diff)
Merge branch 'cris_move' of git://www.jni.nu/cris
* 'cris_move' of git://www.jni.nu/cris: [CRIS] Move header files from include to arch/cris/include. [CRISv32] Remove warning in io.h
Diffstat (limited to 'arch/cris/include/arch-v32/arch/tlb.h')
-rw-r--r--arch/cris/include/arch-v32/arch/tlb.h14
1 files changed, 14 insertions, 0 deletions
diff --git a/arch/cris/include/arch-v32/arch/tlb.h b/arch/cris/include/arch-v32/arch/tlb.h
new file mode 100644
index 00000000000..4effb125366
--- /dev/null
+++ b/arch/cris/include/arch-v32/arch/tlb.h
@@ -0,0 +1,14 @@
+#ifndef _CRIS_ARCH_TLB_H
+#define _CRIS_ARCH_TLB_H
+
+/*
+ * The TLB is a 64-entry cache. Each entry has a 8-bit page_id that is used
+ * to store the "process" it belongs to (=> fast mm context switch). The
+ * last page_id is never used so we can make TLB entries that never matches.
+ */
+#define NUM_TLB_ENTRIES 64
+#define NUM_PAGEID 256
+#define INVALID_PAGEID 255
+#define NO_CONTEXT -1
+
+#endif /* _CRIS_ARCH_TLB_H */