diff options
author | Jeremy Fitzhardinge <jeremy@goop.org> | 2008-01-30 15:32:55 +0300 |
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committer | Ingo Molnar <mingo@elte.hu> | 2008-01-30 15:32:55 +0300 |
commit | 6c3866558213ff706d8331053386915371ad63ec (patch) | |
tree | 7c7d4b56c0544abbc2256f078d71a78d3ebfb84d /include/asm-x86/pgtable.h | |
parent | 82bc03fc158e28c90d7ed9919410776039cb4e14 (diff) | |
download | linux-6c3866558213ff706d8331053386915371ad63ec.tar.xz |
x86: move all asm/pgtable constants into one place
32 and 64-bit use the same flags for pagetable entries, so make them all common.
[ mingo@elte.hu: fixes ]
Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Diffstat (limited to 'include/asm-x86/pgtable.h')
-rw-r--r-- | include/asm-x86/pgtable.h | 119 |
1 files changed, 119 insertions, 0 deletions
diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h index 1039140652af..5b858f0285a8 100644 --- a/include/asm-x86/pgtable.h +++ b/include/asm-x86/pgtable.h @@ -1,5 +1,124 @@ +#ifndef _ASM_X86_PGTABLE_H +#define _ASM_X86_PGTABLE_H + +#define USER_PTRS_PER_PGD ((TASK_SIZE-1)/PGDIR_SIZE+1) +#define FIRST_USER_ADDRESS 0 + +#define _PAGE_BIT_PRESENT 0 +#define _PAGE_BIT_RW 1 +#define _PAGE_BIT_USER 2 +#define _PAGE_BIT_PWT 3 +#define _PAGE_BIT_PCD 4 +#define _PAGE_BIT_ACCESSED 5 +#define _PAGE_BIT_DIRTY 6 +#define _PAGE_BIT_FILE 6 +#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */ +#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */ +#define _PAGE_BIT_UNUSED1 9 /* available for programmer */ +#define _PAGE_BIT_UNUSED2 10 +#define _PAGE_BIT_UNUSED3 11 +#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */ + +#define _PAGE_PRESENT (_AC(1, UL)<<_PAGE_BIT_PRESENT) +#define _PAGE_RW (_AC(1, UL)<<_PAGE_BIT_RW) +#define _PAGE_USER (_AC(1, UL)<<_PAGE_BIT_USER) +#define _PAGE_PWT (_AC(1, UL)<<_PAGE_BIT_PWT) +#define _PAGE_PCD (_AC(1, UL)<<_PAGE_BIT_PCD) +#define _PAGE_ACCESSED (_AC(1, UL)<<_PAGE_BIT_ACCESSED) +#define _PAGE_DIRTY (_AC(1, UL)<<_PAGE_BIT_DIRTY) +#define _PAGE_PSE (_AC(1, UL)<<_PAGE_BIT_PSE) /* 2MB page */ +#define _PAGE_GLOBAL (_AC(1, UL)<<_PAGE_BIT_GLOBAL) /* Global TLB entry */ +#define _PAGE_UNUSED1 (_AC(1, UL)<<_PAGE_BIT_UNUSED1) +#define _PAGE_UNUSED2 (_AC(1, UL)<<_PAGE_BIT_UNUSED2) +#define _PAGE_UNUSED3 (_AC(1, UL)<<_PAGE_BIT_UNUSED3) + +#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE) +#define _PAGE_NX (_AC(1, ULL) << _PAGE_BIT_NX) +#else +#define _PAGE_NX 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_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY) +#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY) + +#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY) + +#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED) +#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX) + +#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED) +#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX) +#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED) +#define PAGE_COPY PAGE_COPY_NOEXEC +#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX) +#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED) + +#ifdef CONFIG_X86_32 +#define _PAGE_KERNEL_EXEC \ + (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED) +#define _PAGE_KERNEL (_PAGE_KERNEL_EXEC | _PAGE_NX) + +#ifndef __ASSEMBLY__ +extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC; +#endif /* __ASSEMBLY__ */ +#else +#define __PAGE_KERNEL_EXEC \ + (_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED) +#define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX) +#endif + +#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW) +#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW) +#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT) +#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER) +#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT) +#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE) +#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE) + +#ifdef CONFIG_X86_32 +# define MAKE_GLOBAL(x) __pgprot((x)) +#else +# define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL) +#endif + +#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL) +#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO) +#define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC) +#define PAGE_KERNEL_RX MAKE_GLOBAL(__PAGE_KERNEL_RX) +#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE) +#define PAGE_KERNEL_LARGE MAKE_GLOBAL(__PAGE_KERNEL_LARGE) +#define PAGE_KERNEL_LARGE_EXEC MAKE_GLOBAL(__PAGE_KERNEL_LARGE_EXEC) +#define PAGE_KERNEL_VSYSCALL MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL) +#define PAGE_KERNEL_VSYSCALL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL_NOCACHE) + +/* xwr */ +#define __P000 PAGE_NONE +#define __P001 PAGE_READONLY +#define __P010 PAGE_COPY +#define __P011 PAGE_COPY +#define __P100 PAGE_READONLY_EXEC +#define __P101 PAGE_READONLY_EXEC +#define __P110 PAGE_COPY_EXEC +#define __P111 PAGE_COPY_EXEC + +#define __S000 PAGE_NONE +#define __S001 PAGE_READONLY +#define __S010 PAGE_SHARED +#define __S011 PAGE_SHARED +#define __S100 PAGE_READONLY_EXEC +#define __S101 PAGE_READONLY_EXEC +#define __S110 PAGE_SHARED_EXEC +#define __S111 PAGE_SHARED_EXEC + #ifdef CONFIG_X86_32 # include "pgtable_32.h" #else # include "pgtable_64.h" #endif + +#endif /* _ASM_X86_PGTABLE_H */ |