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authorRusty Russell <rusty@rustcorp.com.au>2008-12-29 22:32:35 +0100
committerRusty Russell <rusty@rustcorp.com.au>2008-12-29 22:32:35 +0100
commit33edcf133ba93ecba2e4b6472e97b689895d805c (patch)
tree327d7a20acef64005e7c5ccbfa1265be28aeb6ac /arch/x86/include/asm/pgtable.h
parentcpumask: Replace cpu_coregroup_map with cpu_coregroup_mask (diff)
parentMerge branch 'next' of git://git.kernel.org/pub/scm/linux/kernel/git/paulus/p... (diff)
downloadlinux-33edcf133ba93ecba2e4b6472e97b689895d805c.tar.xz
linux-33edcf133ba93ecba2e4b6472e97b689895d805c.zip
Merge branch 'master' of git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux-2.6
Diffstat (limited to 'arch/x86/include/asm/pgtable.h')
-rw-r--r--arch/x86/include/asm/pgtable.h28
1 files changed, 22 insertions, 6 deletions
diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index c012f3b11671..83e69f4a37f0 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -10,7 +10,6 @@
#define _PAGE_BIT_PCD 4 /* page cache disabled */
#define _PAGE_BIT_ACCESSED 5 /* was accessed (raised by CPU) */
#define _PAGE_BIT_DIRTY 6 /* was written to (raised by CPU) */
-#define _PAGE_BIT_FILE 6
#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
#define _PAGE_BIT_PAT 7 /* on 4KB pages */
#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
@@ -22,6 +21,12 @@
#define _PAGE_BIT_CPA_TEST _PAGE_BIT_UNUSED1
#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
+/* If _PAGE_BIT_PRESENT is clear, we use these: */
+/* - if the user mapped it with PROT_NONE; pte_present gives true */
+#define _PAGE_BIT_PROTNONE _PAGE_BIT_GLOBAL
+/* - set: nonlinear file mapping, saved PTE; unset:swap */
+#define _PAGE_BIT_FILE _PAGE_BIT_DIRTY
+
#define _PAGE_PRESENT (_AT(pteval_t, 1) << _PAGE_BIT_PRESENT)
#define _PAGE_RW (_AT(pteval_t, 1) << _PAGE_BIT_RW)
#define _PAGE_USER (_AT(pteval_t, 1) << _PAGE_BIT_USER)
@@ -46,11 +51,8 @@
#define _PAGE_NX (_AT(pteval_t, 0))
#endif
-/* If _PAGE_PRESENT is clear, we use these: */
-#define _PAGE_FILE _PAGE_DIRTY /* nonlinear file mapping,
- * saved PTE; unset:swap */
-#define _PAGE_PROTNONE _PAGE_PSE /* if the user mapped it with PROT_NONE;
- pte_present gives true */
+#define _PAGE_FILE (_AT(pteval_t, 1) << _PAGE_BIT_FILE)
+#define _PAGE_PROTNONE (_AT(pteval_t, 1) << _PAGE_BIT_PROTNONE)
#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | \
_PAGE_ACCESSED | _PAGE_DIRTY)
@@ -158,8 +160,19 @@
#define PGD_IDENT_ATTR 0x001 /* PRESENT (no other attributes) */
#endif
+/*
+ * Macro to mark a page protection value as UC-
+ */
+#define pgprot_noncached(prot) \
+ ((boot_cpu_data.x86 > 3) \
+ ? (__pgprot(pgprot_val(prot) | _PAGE_CACHE_UC_MINUS)) \
+ : (prot))
+
#ifndef __ASSEMBLY__
+#define pgprot_writecombine pgprot_writecombine
+extern pgprot_t pgprot_writecombine(pgprot_t prot);
+
/*
* ZERO_PAGE is a global shared page that is always zero: used
* for zero-mapped memory areas etc..
@@ -329,6 +342,9 @@ static inline pgprot_t pgprot_modify(pgprot_t oldprot, pgprot_t newprot)
#define canon_pgprot(p) __pgprot(pgprot_val(p) & __supported_pte_mask)
#ifndef __ASSEMBLY__
+/* Indicate that x86 has its own track and untrack pfn vma functions */
+#define __HAVE_PFNMAP_TRACKING
+
#define __HAVE_PHYS_MEM_ACCESS_PROT
struct file;
pgprot_t phys_mem_access_prot(struct file *file, unsigned long pfn,