sh: New extended page flag to wire/unwire TLB entries

[cascardo/linux.git] / arch / sh / include / asm / pgtable_32.h

diff --git a/arch/sh/include/asm/pgtable_32.h b/arch/sh/include/asm/pgtable_32.h
index 5003ee8..c573d45 100644 (file)
--- 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 */