mirror of
https://github.com/FEX-Emu/linux.git
synced 2024-12-26 19:36:41 +00:00
4614139c6a
Unify functions to test and set bits in pagetable entries. NOP: only moves existing code around, without any change to it. Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
153 lines
6.0 KiB
C
153 lines
6.0 KiB
C
#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, L)<<_PAGE_BIT_PRESENT)
|
|
#define _PAGE_RW (_AC(1, L)<<_PAGE_BIT_RW)
|
|
#define _PAGE_USER (_AC(1, L)<<_PAGE_BIT_USER)
|
|
#define _PAGE_PWT (_AC(1, L)<<_PAGE_BIT_PWT)
|
|
#define _PAGE_PCD (_AC(1, L)<<_PAGE_BIT_PCD)
|
|
#define _PAGE_ACCESSED (_AC(1, L)<<_PAGE_BIT_ACCESSED)
|
|
#define _PAGE_DIRTY (_AC(1, L)<<_PAGE_BIT_DIRTY)
|
|
#define _PAGE_PSE (_AC(1, L)<<_PAGE_BIT_PSE) /* 2MB page */
|
|
#define _PAGE_GLOBAL (_AC(1, L)<<_PAGE_BIT_GLOBAL) /* Global TLB entry */
|
|
#define _PAGE_UNUSED1 (_AC(1, L)<<_PAGE_BIT_UNUSED1)
|
|
#define _PAGE_UNUSED2 (_AC(1, L)<<_PAGE_BIT_UNUSED2)
|
|
#define _PAGE_UNUSED3 (_AC(1, L)<<_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
|
|
|
|
#ifndef __ASSEMBLY__
|
|
/*
|
|
* The following only work if pte_present() is true.
|
|
* Undefined behaviour if not..
|
|
*/
|
|
static inline int pte_dirty(pte_t pte) { return pte_val(pte) & _PAGE_DIRTY; }
|
|
static inline int pte_young(pte_t pte) { return pte_val(pte) & _PAGE_ACCESSED; }
|
|
static inline int pte_write(pte_t pte) { return pte_val(pte) & _PAGE_RW; }
|
|
static inline int pte_file(pte_t pte) { return pte_val(pte) & _PAGE_FILE; }
|
|
static inline int pte_huge(pte_t pte) { return pte_val(pte) & _PAGE_PSE; }
|
|
|
|
static inline int pmd_large(pmd_t pte) {
|
|
return (pmd_val(pte) & (_PAGE_PSE|_PAGE_PRESENT)) ==
|
|
(_PAGE_PSE|_PAGE_PRESENT);
|
|
}
|
|
|
|
static inline pte_t pte_mkclean(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_DIRTY); }
|
|
static inline pte_t pte_mkold(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_ACCESSED); }
|
|
static inline pte_t pte_wrprotect(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_RW); }
|
|
static inline pte_t pte_mkexec(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_NX); }
|
|
static inline pte_t pte_mkdirty(pte_t pte) { return __pte(pte_val(pte) | _PAGE_DIRTY); }
|
|
static inline pte_t pte_mkyoung(pte_t pte) { return __pte(pte_val(pte) | _PAGE_ACCESSED); }
|
|
static inline pte_t pte_mkwrite(pte_t pte) { return __pte(pte_val(pte) | _PAGE_RW); }
|
|
static inline pte_t pte_mkhuge(pte_t pte) { return __pte(pte_val(pte) | _PAGE_PSE); }
|
|
static inline pte_t pte_clrhuge(pte_t pte) { return __pte(pte_val(pte) & ~_PAGE_PSE); }
|
|
|
|
#endif /* __ASSEMBLY__ */
|
|
|
|
#ifdef CONFIG_X86_32
|
|
# include "pgtable_32.h"
|
|
#else
|
|
# include "pgtable_64.h"
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_PGTABLE_H */
|