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authorJeremy Fitzhardinge <jeremy@goop.org>2008-01-30 13:32:44 +0100
committerIngo Molnar <mingo@elte.hu>2008-01-30 13:32:44 +0100
commit11b7c7dc945b8802c459baa3304c1b501d2bf872 (patch)
treee07b1dbc96584362eabcca91f43177e15e0a1ced /include/asm-x86/page_64.h
parente62f4473f32a882a537b32cb7202da8d5d7c4f1f (diff)
x86: page.h: move things back to their own files
# HG changeset patch # User Jeremy Fitzhardinge <jeremy@xensource.com> # Date 1199321648 28800 # Node ID 22f6a5902285b58bfc1fbbd9e183498c9017bd78 # Parent bba9287641ff90e836d090d80b5c0a846aab7162 x86: page.h: move things back to their own files Oops, asm/page.h has turned into an #ifdef hellhole. Move 32/64-specific things back to their own headers to make it somewhat comprehensible... Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/page_64.h')
-rw-r--r--include/asm-x86/page_64.h74
1 files changed, 69 insertions, 5 deletions
diff --git a/include/asm-x86/page_64.h b/include/asm-x86/page_64.h
index 94d4803aab2d..ebf977a809a8 100644
--- a/include/asm-x86/page_64.h
+++ b/include/asm-x86/page_64.h
@@ -1,17 +1,81 @@
#ifndef _X86_64_PAGE_H
#define _X86_64_PAGE_H
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
+#define PAGETABLE_LEVELS 4
+
+#define THREAD_ORDER 1
+#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
+#define CURRENT_MASK (~(THREAD_SIZE-1))
+
+#define EXCEPTION_STACK_ORDER 0
+#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
+
+#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
+#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
+
+#define IRQSTACK_ORDER 2
+#define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER)
+
+#define STACKFAULT_STACK 1
+#define DOUBLEFAULT_STACK 2
+#define NMI_STACK 3
+#define DEBUG_STACK 4
+#define MCE_STACK 5
+#define N_EXCEPTION_STACKS 5 /* hw limit: 7 */
+
+#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
+
+#define __PHYSICAL_START CONFIG_PHYSICAL_START
+#define __KERNEL_ALIGN 0x200000
-#endif /* !__ASSEMBLY__ */
+/*
+ * Make sure kernel is aligned to 2MB address. Catching it at compile
+ * time is better. Change your config file and compile the kernel
+ * for a 2MB aligned address (CONFIG_PHYSICAL_START)
+ */
+#if (CONFIG_PHYSICAL_START % __KERNEL_ALIGN) != 0
+#error "CONFIG_PHYSICAL_START must be a multiple of 2MB"
+#endif
+
+#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
+#define __START_KERNEL_map _AC(0xffffffff80000000, UL)
+
+/* See Documentation/x86_64/mm.txt for a description of the memory map. */
+#define __PHYSICAL_MASK_SHIFT 46
+#define __VIRTUAL_MASK_SHIFT 48
+
+#define KERNEL_TEXT_SIZE (40*1024*1024)
+#define KERNEL_TEXT_START _AC(0xffffffff80000000, UL)
#ifndef __ASSEMBLY__
+void clear_page(void *page);
+void copy_page(void *to, void *from);
+
+extern unsigned long end_pfn;
+extern unsigned long end_pfn_map;
+extern unsigned long phys_base;
+
+extern unsigned long __phys_addr(unsigned long);
+#define __phys_reloc_hide(x) (x)
+
+/*
+ * These are used to make use of C type-checking..
+ */
+typedef unsigned long pteval_t;
+typedef unsigned long pmdval_t;
+typedef unsigned long pudval_t;
+typedef unsigned long pgdval_t;
+typedef unsigned long pgprotval_t;
+typedef unsigned long phys_addr_t;
+
+typedef struct { pteval_t pte; } pte_t;
+#define native_pte_val(x) ((x).pte)
+#define native_make_pte(x) ((pte_t) { (x) } )
-#endif /* __ASSEMBLY__ */
+#define vmemmap ((struct page *)VMEMMAP_START)
-#endif /* __KERNEL__ */
+#endif /* !__ASSEMBLY__ */
#ifdef CONFIG_FLATMEM
#define pfn_valid(pfn) ((pfn) < end_pfn)