#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 */