x86: add code to dump the (kernel) page tables for visual inspection by kernel developers

[linux-2.6-omap-h63xx.git] / include / asm-sh / pgtable_64.h

diff --git a/include/asm-sh/pgtable_64.h b/include/asm-sh/pgtable_64.h
index 972211671c9aa4ef8eecba2c21551bc334690c8e..f9dd9d3114412d73190c7ba9ce4dabe89985b586 100644 (file)
--- a/include/asm-sh/pgtable_64.h
+++ b/include/asm-sh/pgtable_64.h
@@ -137,6 +137,14 @@ static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep)
 #define _PAGE_SZHUGE   (_PAGE_SIZE0 | _PAGE_SIZE1)
 #endif
 
+/*
+ * Stub out _PAGE_SZHUGE if we don't have a good definition for it,
+ * to make pte_mkhuge() happy.
+ */
+#ifndef _PAGE_SZHUGE
+# define _PAGE_SZHUGE  (0)
+#endif
+
 /*
  * Default flags for a Kernel page.
  * This is fundametally also SHARED because the main use of this define
@@ -179,6 +187,11 @@ static __inline__ void pmd_set(pmd_t *pmdp,pte_t *ptep)
                                 _PAGE_WRITE | _PAGE_EXECUTE)
 #define PAGE_KERNEL    __pgprot(_KERNPG_TABLE)
 
+#define PAGE_KERNEL_NOCACHE \
+                       __pgprot(_PAGE_PRESENT | _PAGE_READ | _PAGE_WRITE | \
+                                _PAGE_EXECUTE | _PAGE_ACCESSED | \
+                                _PAGE_DIRTY | _PAGE_SHARED)
+
 /* Make it a device mapping for maximum safety (e.g. for mapping device
    registers into user-space via /dev/map).  */
 #define pgprot_noncached(x) __pgprot(((x).pgprot & ~(_PAGE_CACHABLE)) | _PAGE_DEVICE)