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Subject[PATCH 1/5] x86: clean up asm-x86/page*.h
Unify common definitions in page*.h.  To simplify other code, I added
typedefs for the value of pte/pmd/pud/pgd values, so they can be used
symbolically elsewhere without needing to have lots of 32/64/PAE
tests.

Also, add PAGETABLE_LEVELS define so that other definitions can test
for it directly rather than using indirect 32/64/PAE tests.

Signed-off-by: Jeremy Fitzhardinge <Jeremy.Fitzhardinge@citrix.com>

---
arch/x86/mm/init_32.c | 2
include/asm-x86/Kbuild | 3
include/asm-x86/page.h | 347 ++++++++++++++++++++++++++++++++++++++++--
include/asm-x86/page_32.h | 233 ----------------------------
include/asm-x86/page_64.h | 158 -------------------
include/asm-x86/pgtable_64.h | 31 +--
6 files changed, 355 insertions(+), 419 deletions(-)

===================================================================
--- a/arch/x86/mm/init_32.c
+++ b/arch/x86/mm/init_32.c
@@ -44,7 +44,7 @@
#include <asm/sections.h>
#include <asm/paravirt.h>

-unsigned int __VMALLOC_RESERVE = 128 << 20;
+unsigned long __VMALLOC_RESERVE = 128 << 20;

DEFINE_PER_CPU(struct mmu_gather, mmu_gathers);
unsigned long highstart_pfn, highend_pfn;
===================================================================
--- a/include/asm-x86/Kbuild
+++ b/include/asm-x86/Kbuild
@@ -15,8 +15,7 @@ unifdef-y += mce.h
unifdef-y += mce.h
unifdef-y += msr.h
unifdef-y += mtrr.h
-unifdef-y += page_32.h
-unifdef-y += page_64.h
+unifdef-y += page.h
unifdef-y += posix_types_32.h
unifdef-y += posix_types_64.h
unifdef-y += ptrace.h
===================================================================
--- a/include/asm-x86/page.h
+++ b/include/asm-x86/page.h
@@ -1,13 +1,340 @@
+#ifndef _ASM_X86_PAGE_H
+#define _ASM_X86_PAGE_H
+
+#include <linux/const.h>
+#include <linux/compiler.h>
+
+/* PAGE_SHIFT determines the page size */
+#define PAGE_SHIFT 12
+#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
+#define PAGE_MASK (~(PAGE_SIZE-1))
+#define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & __PHYSICAL_MASK)
+
+#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
+#define LARGE_PAGE_SIZE (_AC(1,UL) << PMD_SHIFT)
+
+#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
+#define HPAGE_MASK (~(HPAGE_SIZE - 1))
+#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
+
#ifdef __KERNEL__
-# ifdef CONFIG_X86_32
-# include "page_32.h"
-# else
-# include "page_64.h"
-# endif
+
+#ifndef __ASSEMBLY__
+#include <linux/types.h>
+#endif /* !__ASSEMBLY__ */
+
+#ifdef CONFIG_X86_32
+#ifndef __ASSEMBLY__
+#ifdef CONFIG_X86_USE_3DNOW
+
+#include <asm/mmx.h>
+
+static inline void clear_page(void *page)
+{
+ mmx_clear_page(page);
+}
+
+static inline void copy_page(void *to, void *from)
+{
+ mmx_copy_page(to, from);
+}
+
+#else /* !CONFIG_X86_USE_3DNOW */
+
+/*
+ * On older X86 processors it's not a win to use MMX here it seems.
+ * Maybe the K6-III ?
+ */
+
+#define clear_page(page) memset((void *)(page), 0, PAGE_SIZE)
+#define copy_page(to,from) memcpy((void *)(to), (void *)(from), PAGE_SIZE)
+
+#endif /* CONFIG_X86_USE_3DNOW */
+
+extern unsigned long __VMALLOC_RESERVE;
+extern int nx_enabled;
+#define __phys_addr(x) ((unsigned long)(x)-PAGE_OFFSET)
+
+#endif /* !__ASSEMBLY__ */
+
+#define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL)
+
+#define VMALLOC_RESERVE (__VMALLOC_RESERVE)
+#define MAXMEM (-__PAGE_OFFSET-__VMALLOC_RESERVE)
+
+#ifdef CONFIG_HUGETLB_PAGE
+#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
+#endif
+
+#ifndef CONFIG_X86_PAE
+/*
+ * 32 bit mode. 2 level pagetable, 32 bit physical, 32 bit virtual
+ */
+#define PAGETABLE_LEVELS 2
+#define __PHYSICAL_MASK_SHIFT 32
+#define __VIRTUAL_MASK_SHIFT 32
+#define HPAGE_SHIFT PGDIR_SHIFT
+
+#ifndef __ASSEMBLY__
+typedef u32 pteval_t;
+typedef u32 pmdval_t;
+typedef u32 pudval_t;
+typedef u32 pgdval_t;
+typedef u32 pgprotval_t;
+
+typedef struct { unsigned long pte_low; } pte_t, boot_pte_t;
+
+static inline pteval_t native_pte_val(pte_t pte)
+{
+ return pte.pte_low;
+}
+
+static inline pte_t native_make_pte(pteval_t val)
+{
+ return (pte_t) { val };
+}
+#endif /* __ASSEMBLY__ */
+
+#else /* CONFIG_X86_PAE */
+/*
+ * 32 bit PAE mode. 3 level pagetable, 36 bit physical, 32 bit virtual
+ */
+#define PAGETABLE_LEVELS 3
+#define __PHYSICAL_MASK_SHIFT 36
+#define __VIRTUAL_MASK_SHIFT 32
+#define HPAGE_SHIFT PMD_SHIFT
+
+#ifndef __ASSEMBLY__
+typedef u64 pteval_t;
+typedef u64 pmdval_t;
+typedef u64 pudval_t;
+typedef u64 pgdval_t;
+typedef u64 pgprotval_t;
+
+typedef struct { unsigned long pte_low, pte_high; } pte_t;
+
+static inline pteval_t native_pte_val(pte_t pte)
+{
+ return pte.pte_low | ((unsigned long long)pte.pte_high << 32);
+}
+
+static inline pte_t native_make_pte(pteval_t val)
+{
+ return (pte_t) { .pte_low = val, .pte_high = (val >> 32) } ;
+}
+#endif /* __ASSEMBLY__ */
+
+#endif /* CONFIG_X86_PAE */
+
+#else /* !CONFIG_X86_32 */
+/*
+ * 64 bit mode. 4 level pagetable, 46 bit physical, 48 bit virtual
+ */
+#define PAGETABLE_LEVELS 4
+#define __PHYSICAL_MASK_SHIFT 46
+#define __VIRTUAL_MASK_SHIFT 48
+#define HPAGE_SHIFT PMD_SHIFT
+
+#ifndef __ASSEMBLY__
+typedef u64 pteval_t;
+typedef u64 pmdval_t;
+typedef u64 pudval_t;
+typedef u64 pgdval_t;
+typedef u64 pgprotval_t;
+
+typedef struct { pteval_t pte; } pte_t;
+
+static inline pteval_t native_pte_val(pte_t pte)
+{
+ return pte.pte;
+}
+
+static inline pte_t native_make_pte(pteval_t pte)
+{
+ return (pte_t){ pte };
+}
+
+extern unsigned long phys_base;
+extern unsigned long end_pfn;
+extern unsigned long end_pfn_map;
+
+void clear_page(void *);
+void copy_page(void *, void *);
+unsigned long __phys_addr(unsigned long);
+
+struct page;
+
+static inline void clear_user_page(void *page, unsigned long vaddr, struct page *pg)
+{
+ clear_page(page);
+}
+
+static inline void copy_user_page(void *to, void *from, unsigned long vaddr, struct page *topg)
+{
+ copy_page(to, from);
+}
+
+#endif /* __ASSEMBLY__ */
+#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
+ alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
+#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+
+#ifdef CONFIG_THREAD_ORDER
+# define THREAD_ORDER CONFIG_THREAD_ORDER
#else
-# ifdef __i386__
-# include "page_32.h"
-# else
-# include "page_64.h"
-# endif
+# define THREAD_ORDER 1
#endif
+#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 __PHYSICAL_START CONFIG_PHYSICAL_START
+#define __KERNEL_ALIGN 0x200000
+
+#define KERNEL_TEXT_SIZE (40*1024*1024)
+#define KERNEL_TEXT_START _AC(0xffffffff80000000, UL)
+
+/*
+ * 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)
+#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
+
+#define vmemmap ((struct page *)VMEMMAP_START)
+
+#endif /* CONFIG_X86_32 */
+
+#ifndef __ASSEMBLY__
+typedef struct { pgprotval_t pgprot; } pgprot_t;
+typedef struct { pgdval_t pgd; } pgd_t;
+
+/* Macro so it can be used as lvalue */
+#define pgprot_val(prot) ((prot).pgprot)
+
+/* Must be macro so it can be used in initializers */
+#define __pgprot(x) ((pgprot_t) { (x) })
+
+static inline pgdval_t native_pgd_val(pgd_t pgd)
+{
+ return pgd.pgd;
+}
+
+static inline pgd_t native_make_pgd(pgdval_t val)
+{
+ return (pgd_t) { val };
+}
+
+#if PAGETABLE_LEVELS >= 3
+
+typedef struct { pmdval_t pmd; } pmd_t;
+
+static inline pmdval_t native_pmd_val(pmd_t pmd)
+{
+ return pmd.pmd;
+}
+
+static inline pmd_t native_make_pmd(unsigned long long pmd)
+{
+ return (pmd_t){ pmd };
+}
+
+#if PAGETABLE_LEVELS == 4
+
+typedef struct { pudval_t pud; } pud_t;
+
+static inline pud_t native_make_pud(unsigned long long pud)
+{
+ return (pud_t){ pud };
+}
+
+static inline pudval_t native_pud_val(pud_t pud)
+{
+ return pud.pud;
+}
+#else /* PAGETABLE_LEVELS == 3 */
+#include <asm-generic/pgtable-nopud.h>
+#endif /* PAGETABLE_LEVELS == 4 */
+#else /* PAGETABLE_LEVELS == 2 */
+#include <asm-generic/pgtable-nopmd.h>
+#endif /* PAGETABLE_LEVELS >= 3 */
+#endif /* __ASSEMBLY__ */
+
+#ifndef CONFIG_PARAVIRT
+#define pgd_val(x) native_pgd_val(x)
+#define __pgd(x) native_make_pgd(x)
+
+#ifndef __PAGETABLE_PUD_FOLDED
+# define pud_val(x) native_pud_val(x)
+# define __pud(x) native_make_pud(x)
+#endif
+
+#ifndef __PAGETABLE_PMD_FOLDED
+# define pmd_val(x) native_pmd_val(x)
+# define __pmd(x) native_make_pmd(x)
+#endif
+
+#define pte_val(x) native_pte_val(x)
+#define __pte(x) native_make_pte(x)
+#endif /* CONFIG_PARAVIRT */
+
+#define PTE_MASK PHYSICAL_PAGE_MASK
+
+#define __PHYSICAL_MASK ((_AC(1,ULL) << __PHYSICAL_MASK_SHIFT) - 1)
+#define __VIRTUAL_MASK ((_AC(1,ULL) << __VIRTUAL_MASK_SHIFT) - 1)
+
+#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
+
+/* to align the pointer to the (next) page boundary */
+#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
+
+#define __pa(x) __phys_addr((unsigned long)(x))
+#define __pa_symbol(x) __phys_addr(RELOC_HIDE((unsigned long)(x), 0))
+#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
+
+#ifdef CONFIG_FLATMEM
+#define pfn_valid(pfn) ((pfn) < max_mapnr)
+#endif /* CONFIG_FLATMEM */
+#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
+#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
+#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
+
+#define VM_DATA_DEFAULT_FLAGS \
+ (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
+ VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
+
+#define clear_user_page(page, vaddr, pg) clear_page(page)
+#define copy_user_page(to, from, vaddr, pg) copy_page(to, from)
+
+#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
+ alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
+#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
+
+#define __HAVE_ARCH_GATE_AREA 1
+
+#include <asm-generic/memory_model.h>
+#include <asm-generic/page.h>
+
+#endif /* __KERNEL__ */
+#endif /* _ASM_X86_PAGE_H */
===================================================================
--- a/include/asm-x86/page_32.h
+++ /dev/null
@@ -1,233 +0,0 @@
-#ifndef _I386_PAGE_H
-#define _I386_PAGE_H
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT 12
-#define PAGE_SIZE (1UL << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
-
-#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
-#define LARGE_PAGE_SIZE (1UL << PMD_SHIFT)
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
-#include <linux/string.h>
-
-#ifdef CONFIG_X86_USE_3DNOW
-
-#include <asm/mmx.h>
-
-static inline void clear_page(void *page)
-{
- mmx_clear_page(page);
-}
-
-static inline void copy_page(void *to, void *from)
-{
- mmx_copy_page(to, from);
-}
-
-#else
-
-/*
- * On older X86 processors it's not a win to use MMX here it seems.
- * Maybe the K6-III ?
- */
-
-static inline void clear_page(void *page)
-{
- memset(page, 0, PAGE_SIZE);
-}
-
-static inline void copy_page(void *to, void *from)
-{
- memcpy(to, from, PAGE_SIZE);
-}
-
-#endif
-
-struct page;
-
-static void inline clear_user_page(void *page, unsigned long vaddr,
- struct page *pg)
-{
- clear_page(page);
-}
-
-static void inline copy_user_page(void *to, void *from, unsigned long vaddr,
- struct page *topage)
-{
- copy_page(to, from);
-}
-
-#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
- alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
-#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
-
-/*
- * These are used to make use of C type-checking..
- */
-extern int nx_enabled;
-
-#ifdef CONFIG_X86_PAE
-typedef struct { unsigned long pte_low, pte_high; } pte_t;
-typedef struct { unsigned long long pmd; } pmd_t;
-typedef struct { unsigned long long pgd; } pgd_t;
-typedef struct { unsigned long long pgprot; } pgprot_t;
-
-static inline unsigned long long native_pgd_val(pgd_t pgd)
-{
- return pgd.pgd;
-}
-
-static inline unsigned long long native_pmd_val(pmd_t pmd)
-{
- return pmd.pmd;
-}
-
-static inline unsigned long long native_pte_val(pte_t pte)
-{
- return pte.pte_low | ((unsigned long long)pte.pte_high << 32);
-}
-
-static inline pgd_t native_make_pgd(unsigned long long val)
-{
- return (pgd_t) { val };
-}
-
-static inline pmd_t native_make_pmd(unsigned long long val)
-{
- return (pmd_t) { val };
-}
-
-static inline pte_t native_make_pte(unsigned long long val)
-{
- return (pte_t) { .pte_low = val, .pte_high = (val >> 32) } ;
-}
-
-#ifndef CONFIG_PARAVIRT
-#define pmd_val(x) native_pmd_val(x)
-#define __pmd(x) native_make_pmd(x)
-#endif
-
-#define HPAGE_SHIFT 21
-#include <asm-generic/pgtable-nopud.h>
-#else /* !CONFIG_X86_PAE */
-typedef struct { unsigned long pte_low; } pte_t;
-typedef struct { unsigned long pgd; } pgd_t;
-typedef struct { unsigned long pgprot; } pgprot_t;
-#define boot_pte_t pte_t /* or would you rather have a typedef */
-
-static inline unsigned long native_pgd_val(pgd_t pgd)
-{
- return pgd.pgd;
-}
-
-static inline unsigned long native_pte_val(pte_t pte)
-{
- return pte.pte_low;
-}
-
-static inline pgd_t native_make_pgd(unsigned long val)
-{
- return (pgd_t) { val };
-}
-
-static inline pte_t native_make_pte(unsigned long val)
-{
- return (pte_t) { .pte_low = val };
-}
-
-#define HPAGE_SHIFT 22
-#include <asm-generic/pgtable-nopmd.h>
-#endif /* CONFIG_X86_PAE */
-
-#define PTE_MASK PAGE_MASK
-
-#ifdef CONFIG_HUGETLB_PAGE
-#define HPAGE_SIZE ((1UL) << HPAGE_SHIFT)
-#define HPAGE_MASK (~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
-#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
-#endif
-
-#define pgprot_val(x) ((x).pgprot)
-#define __pgprot(x) ((pgprot_t) { (x) } )
-
-#ifndef CONFIG_PARAVIRT
-#define pgd_val(x) native_pgd_val(x)
-#define __pgd(x) native_make_pgd(x)
-#define pte_val(x) native_pte_val(x)
-#define __pte(x) native_make_pte(x)
-#endif
-
-#endif /* !__ASSEMBLY__ */
-
-/* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-
-/*
- * This handles the memory map.. We could make this a config
- * option, but too many people screw it up, and too few need
- * it.
- *
- * A __PAGE_OFFSET of 0xC0000000 means that the kernel has
- * a virtual address space of one gigabyte, which limits the
- * amount of physical memory you can use to about 950MB.
- *
- * If you want more physical memory than this then see the CONFIG_HIGHMEM4G
- * and CONFIG_HIGHMEM64G options in the kernel configuration.
- */
-
-#ifndef __ASSEMBLY__
-
-struct vm_area_struct;
-
-/*
- * This much address space is reserved for vmalloc() and iomap()
- * as well as fixmap mappings.
- */
-extern unsigned int __VMALLOC_RESERVE;
-
-extern int sysctl_legacy_va_layout;
-
-extern int page_is_ram(unsigned long pagenr);
-
-#endif /* __ASSEMBLY__ */
-
-#ifdef __ASSEMBLY__
-#define __PAGE_OFFSET CONFIG_PAGE_OFFSET
-#else
-#define __PAGE_OFFSET ((unsigned long)CONFIG_PAGE_OFFSET)
-#endif
-
-
-#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
-#define VMALLOC_RESERVE ((unsigned long)__VMALLOC_RESERVE)
-#define MAXMEM (-__PAGE_OFFSET-__VMALLOC_RESERVE)
-#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET)
-/* __pa_symbol should be used for C visible symbols.
- This seems to be the official gcc blessed way to do such arithmetic. */
-#define __pa_symbol(x) __pa(RELOC_HIDE((unsigned long)(x),0))
-#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
-#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
-#ifdef CONFIG_FLATMEM
-#define pfn_valid(pfn) ((pfn) < max_mapnr)
-#endif /* CONFIG_FLATMEM */
-#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-
-#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-
-#define VM_DATA_DEFAULT_FLAGS \
- (VM_READ | VM_WRITE | \
- ((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
- VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
-
-#define __HAVE_ARCH_GATE_AREA 1
-#endif /* __KERNEL__ */
-
-#endif /* _I386_PAGE_H */
===================================================================
--- a/include/asm-x86/page_64.h
+++ /dev/null
@@ -1,158 +0,0 @@
-#ifndef _X86_64_PAGE_H
-#define _X86_64_PAGE_H
-
-#include <linux/const.h>
-
-/* PAGE_SHIFT determines the page size */
-#define PAGE_SHIFT 12
-#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
-#define PAGE_MASK (~(PAGE_SIZE-1))
-#define PHYSICAL_PAGE_MASK (~(PAGE_SIZE-1) & __PHYSICAL_MASK)
-
-#ifdef CONFIG_THREAD_ORDER
-# define THREAD_ORDER CONFIG_THREAD_ORDER
-#else
-# define THREAD_ORDER 1
-#endif
-
-#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 LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
-#define LARGE_PAGE_SIZE (_AC(1,UL) << PMD_SHIFT)
-
-#define HPAGE_SHIFT PMD_SHIFT
-#define HPAGE_SIZE (_AC(1,UL) << HPAGE_SHIFT)
-#define HPAGE_MASK (~(HPAGE_SIZE - 1))
-#define HUGETLB_PAGE_ORDER (HPAGE_SHIFT - PAGE_SHIFT)
-
-#ifdef __KERNEL__
-#ifndef __ASSEMBLY__
-
-extern unsigned long end_pfn;
-extern unsigned long end_pfn_map;
-
-void clear_page(void *page);
-void copy_page(void *to, void *from);
-
-struct page;
-
-static void inline clear_user_page(void *page, unsigned long vaddr,
- struct page *pg)
-{
- clear_page(page);
-}
-
-static void inline copy_user_page(void *to, void *from, unsigned long vaddr,
- struct page *topage)
-{
- copy_page(to, from);
-}
-
-#define __alloc_zeroed_user_highpage(movableflags, vma, vaddr) \
- alloc_page_vma(GFP_HIGHUSER | __GFP_ZERO | movableflags, vma, vaddr)
-#define __HAVE_ARCH_ALLOC_ZEROED_USER_HIGHPAGE
-/*
- * These are used to make use of C type-checking..
- */
-typedef struct { unsigned long pte; } pte_t;
-typedef struct { unsigned long pmd; } pmd_t;
-typedef struct { unsigned long pud; } pud_t;
-typedef struct { unsigned long pgd; } pgd_t;
-#define PTE_MASK PHYSICAL_PAGE_MASK
-
-typedef struct { unsigned long pgprot; } pgprot_t;
-
-extern unsigned long phys_base;
-
-#define pte_val(x) ((x).pte)
-#define pmd_val(x) ((x).pmd)
-#define pud_val(x) ((x).pud)
-#define pgd_val(x) ((x).pgd)
-#define pgprot_val(x) ((x).pgprot)
-
-#define __pte(x) ((pte_t) { (x) } )
-#define __pmd(x) ((pmd_t) { (x) } )
-#define __pud(x) ((pud_t) { (x) } )
-#define __pgd(x) ((pgd_t) { (x) } )
-#define __pgprot(x) ((pgprot_t) { (x) } )
-
-#endif /* !__ASSEMBLY__ */
-
-#define __PHYSICAL_START CONFIG_PHYSICAL_START
-#define __KERNEL_ALIGN 0x200000
-
-/*
- * 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)
-#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
-
-/* to align the pointer to the (next) page boundary */
-#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
-
-/* See Documentation/x86_64/mm.txt for a description of the memory map. */
-#define __PHYSICAL_MASK_SHIFT 46
-#define __PHYSICAL_MASK ((_AC(1,UL) << __PHYSICAL_MASK_SHIFT) - 1)
-#define __VIRTUAL_MASK_SHIFT 48
-#define __VIRTUAL_MASK ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1)
-
-#define KERNEL_TEXT_SIZE (40*1024*1024)
-#define KERNEL_TEXT_START _AC(0xffffffff80000000, UL)
-#define PAGE_OFFSET __PAGE_OFFSET
-
-#ifndef __ASSEMBLY__
-
-#include <asm/bug.h>
-
-extern unsigned long __phys_addr(unsigned long);
-
-#endif /* __ASSEMBLY__ */
-
-#define __pa(x) __phys_addr((unsigned long)(x))
-#define __pa_symbol(x) __phys_addr((unsigned long)(x))
-
-#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))
-#define __boot_va(x) __va(x)
-#define __boot_pa(x) __pa(x)
-
-#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT)
-#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT)
-#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT)
-
-#define VM_DATA_DEFAULT_FLAGS \
- (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
- VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
-
-#define __HAVE_ARCH_GATE_AREA 1
-#define vmemmap ((struct page *)VMEMMAP_START)
-
-#include <asm-generic/memory_model.h>
-#include <asm-generic/page.h>
-
-#endif /* __KERNEL__ */
-
-#endif /* _X86_64_PAGE_H */
===================================================================
--- a/include/asm-x86/pgtable_64.h
+++ b/include/asm-x86/pgtable_64.h
@@ -73,18 +73,18 @@ extern unsigned long empty_zero_page[PAG

static inline void set_pte(pte_t *dst, pte_t val)
{
- pte_val(*dst) = pte_val(val);
+ *dst = val;
}
#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)

static inline void set_pmd(pmd_t *dst, pmd_t val)
{
- pmd_val(*dst) = pmd_val(val);
+ *dst = val;
}

static inline void set_pud(pud_t *dst, pud_t val)
{
- pud_val(*dst) = pud_val(val);
+ *dst = val;
}

static inline void pud_clear (pud_t *pud)
@@ -94,7 +94,7 @@ static inline void pud_clear (pud_t *pud

static inline void set_pgd(pgd_t *dst, pgd_t val)
{
- pgd_val(*dst) = pgd_val(val);
+ *dst = val;
}

static inline void pgd_clear (pgd_t * pgd)
@@ -258,11 +258,11 @@ static inline unsigned long pmd_bad(pmd_

static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
{
- pte_t pte;
- pte_val(pte) = (page_nr << PAGE_SHIFT);
- pte_val(pte) |= pgprot_val(pgprot);
- pte_val(pte) &= __supported_pte_mask;
- return pte;
+ pteval_t pte;
+ pte = (page_nr << PAGE_SHIFT);
+ pte |= pgprot_val(pgprot);
+ pte &= __supported_pte_mask;
+ return __pte(pte);
}

/*
@@ -292,12 +292,12 @@ static inline int ptep_test_and_clear_yo
{
if (!pte_young(*ptep))
return 0;
- return test_and_clear_bit(_PAGE_BIT_ACCESSED, &ptep->pte);
+ return test_and_clear_bit(_PAGE_BIT_ACCESSED, (unsigned long *)&ptep->pte);
}

static inline void ptep_set_wrprotect(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
{
- clear_bit(_PAGE_BIT_RW, &ptep->pte);
+ clear_bit(_PAGE_BIT_RW, (unsigned long *)&ptep->pte);
}

/*
@@ -359,10 +359,11 @@ static inline int pmd_large(pmd_t pte) {
/* Change flags of a PTE */
static inline pte_t pte_modify(pte_t pte, pgprot_t newprot)
{
- pte_val(pte) &= _PAGE_CHG_MASK;
- pte_val(pte) |= pgprot_val(newprot);
- pte_val(pte) &= __supported_pte_mask;
- return pte;
+ pteval_t val = pte_val(pte);
+ val &= _PAGE_CHG_MASK;
+ val |= pgprot_val(newprot);
+ val &= __supported_pte_mask;
+ return __pte(val);
}

#define pte_index(address) \
--



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