summaryrefslogtreecommitdiffstats
path: root/arch/sh/include/asm/pgtable_32.h
diff options
context:
space:
mode:
authorMatt Fleming <matt@console-pimps.org>2009-11-17 21:05:31 +0000
committerMatt Fleming <matt@console-pimps.org>2010-01-16 14:28:57 +0000
commit8eda55142080f0373b1f0268fe6d6807f193e713 (patch)
tree6d103af69153dc5bfd78ebe89930cf3c66ec5b2b /arch/sh/include/asm/pgtable_32.h
parent7dcaa8e8e67b2cfbe0097c9bb52e23aed5443b8b (diff)
sh: New extended page flag to wire/unwire TLB entries
Provide a new extended page flag, _PAGE_WIRED and an SH4 implementation for wiring TLB entries and use it in the fixmap code path so that we can wire the fixmap TLB entry. Signed-off-by: Matt Fleming <matt@console-pimps.org>
Diffstat (limited to 'arch/sh/include/asm/pgtable_32.h')
-rw-r--r--arch/sh/include/asm/pgtable_32.h4
1 files changed, 4 insertions, 0 deletions
diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h
index 5003ee86f67..c573d45f128 100644
--- a/arch/sh/include/asm/pgtable_32.h
+++ b/arch/sh/include/asm/pgtable_32.h
@@ -71,6 +71,8 @@
#define _PAGE_EXT_KERN_WRITE 0x1000 /* EPR4-bit: Kernel space writable */
#define _PAGE_EXT_KERN_READ 0x2000 /* EPR5-bit: Kernel space readable */
+#define _PAGE_EXT_WIRED 0x4000 /* software: Wire TLB entry */
+
/* Wrapper for extended mode pgprot twiddling */
#define _PAGE_EXT(x) ((unsigned long long)(x) << 32)
@@ -164,6 +166,8 @@ static inline unsigned long copy_ptea_attributes(unsigned long x)
(PTE_MASK | _PAGE_ACCESSED | _PAGE_CACHABLE | \
_PAGE_DIRTY | _PAGE_SPECIAL)
+#define _PAGE_WIRED (_PAGE_EXT(_PAGE_EXT_WIRED))
+
#ifndef __ASSEMBLY__
#if defined(CONFIG_X2TLB) /* SH-X2 TLB */