forked from Minki/linux
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>
This commit is contained in:
Jeremy Fitzhardinge
Ingo Molnar
parent
82bc03fc15
commit
6c38665582
@ -1,5 +1,124 @@
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#ifndef _ASM_X86_PGTABLE_H
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#define _ASM_X86_PGTABLE_H
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#define USER_PTRS_PER_PGD ((TASK_SIZE-1)/PGDIR_SIZE+1)
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#define FIRST_USER_ADDRESS 0
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#define _PAGE_BIT_PRESENT 0
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#define _PAGE_BIT_RW 1
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#define _PAGE_BIT_USER 2
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#define _PAGE_BIT_PWT 3
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#define _PAGE_BIT_PCD 4
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#define _PAGE_BIT_ACCESSED 5
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#define _PAGE_BIT_DIRTY 6
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#define _PAGE_BIT_FILE 6
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#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
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#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
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#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
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#define _PAGE_BIT_UNUSED2 10
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#define _PAGE_BIT_UNUSED3 11
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#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
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#define _PAGE_PRESENT (_AC(1, UL)<<_PAGE_BIT_PRESENT)
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#define _PAGE_RW (_AC(1, UL)<<_PAGE_BIT_RW)
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#define _PAGE_USER (_AC(1, UL)<<_PAGE_BIT_USER)
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#define _PAGE_PWT (_AC(1, UL)<<_PAGE_BIT_PWT)
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#define _PAGE_PCD (_AC(1, UL)<<_PAGE_BIT_PCD)
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#define _PAGE_ACCESSED (_AC(1, UL)<<_PAGE_BIT_ACCESSED)
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#define _PAGE_DIRTY (_AC(1, UL)<<_PAGE_BIT_DIRTY)
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#define _PAGE_PSE (_AC(1, UL)<<_PAGE_BIT_PSE) /* 2MB page */
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#define _PAGE_GLOBAL (_AC(1, UL)<<_PAGE_BIT_GLOBAL) /* Global TLB entry */
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#define _PAGE_UNUSED1 (_AC(1, UL)<<_PAGE_BIT_UNUSED1)
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#define _PAGE_UNUSED2 (_AC(1, UL)<<_PAGE_BIT_UNUSED2)
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#define _PAGE_UNUSED3 (_AC(1, UL)<<_PAGE_BIT_UNUSED3)
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#if defined(CONFIG_X86_64) || defined(CONFIG_X86_PAE)
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#define _PAGE_NX (_AC(1, ULL) << _PAGE_BIT_NX)
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#else
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#define _PAGE_NX 0
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#endif
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/* If _PAGE_PRESENT is clear, we use these: */
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#define _PAGE_FILE _PAGE_DIRTY /* nonlinear file mapping, saved PTE; unset:swap */
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#define _PAGE_PROTNONE _PAGE_PSE /* if the user mapped it with PROT_NONE;
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pte_present gives true */
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#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
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#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
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#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
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#define PAGE_COPY PAGE_COPY_NOEXEC
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#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
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#ifdef CONFIG_X86_32
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#define _PAGE_KERNEL_EXEC \
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(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
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#define _PAGE_KERNEL (_PAGE_KERNEL_EXEC | _PAGE_NX)
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#ifndef __ASSEMBLY__
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extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
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#endif /* __ASSEMBLY__ */
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#else
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#define __PAGE_KERNEL_EXEC \
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(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
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#define __PAGE_KERNEL (__PAGE_KERNEL_EXEC | _PAGE_NX)
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#endif
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#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
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#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
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#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
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#define __PAGE_KERNEL_VSYSCALL (__PAGE_KERNEL_RX | _PAGE_USER)
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#define __PAGE_KERNEL_VSYSCALL_NOCACHE (__PAGE_KERNEL_VSYSCALL | _PAGE_PCD | _PAGE_PWT)
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#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
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#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
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#ifdef CONFIG_X86_32
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# define MAKE_GLOBAL(x) __pgprot((x))
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#else
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# define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
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#endif
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#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
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#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
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#define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
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#define PAGE_KERNEL_RX MAKE_GLOBAL(__PAGE_KERNEL_RX)
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#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
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#define PAGE_KERNEL_LARGE MAKE_GLOBAL(__PAGE_KERNEL_LARGE)
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#define PAGE_KERNEL_LARGE_EXEC MAKE_GLOBAL(__PAGE_KERNEL_LARGE_EXEC)
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#define PAGE_KERNEL_VSYSCALL MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL)
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#define PAGE_KERNEL_VSYSCALL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL_NOCACHE)
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/* xwr */
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#define __P000 PAGE_NONE
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#define __P001 PAGE_READONLY
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#define __P010 PAGE_COPY
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#define __P011 PAGE_COPY
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#define __P100 PAGE_READONLY_EXEC
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#define __P101 PAGE_READONLY_EXEC
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#define __P110 PAGE_COPY_EXEC
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#define __P111 PAGE_COPY_EXEC
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#define __S000 PAGE_NONE
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#define __S001 PAGE_READONLY
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#define __S010 PAGE_SHARED
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#define __S011 PAGE_SHARED
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#define __S100 PAGE_READONLY_EXEC
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#define __S101 PAGE_READONLY_EXEC
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#define __S110 PAGE_SHARED_EXEC
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#define __S111 PAGE_SHARED_EXEC
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#ifdef CONFIG_X86_32
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# include "pgtable_32.h"
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#else
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# include "pgtable_64.h"
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#endif
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#endif /* _ASM_X86_PGTABLE_H */
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@ -58,9 +58,6 @@ void paging_init(void);
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#define PGDIR_SIZE (1UL << PGDIR_SHIFT)
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#define PGDIR_MASK (~(PGDIR_SIZE-1))
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#define USER_PTRS_PER_PGD (TASK_SIZE/PGDIR_SIZE)
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#define FIRST_USER_ADDRESS 0
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#define USER_PGD_PTRS (PAGE_OFFSET >> PGDIR_SHIFT)
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#define KERNEL_PGD_PTRS (PTRS_PER_PGD-USER_PGD_PTRS)
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@ -84,113 +81,6 @@ void paging_init(void);
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# define VMALLOC_END (FIXADDR_START-2*PAGE_SIZE)
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#endif
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/*
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* _PAGE_PSE set in the page directory entry just means that
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* the page directory entry points directly to a 4MB-aligned block of
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* memory.
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*/
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#define _PAGE_BIT_PRESENT 0
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#define _PAGE_BIT_RW 1
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#define _PAGE_BIT_USER 2
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#define _PAGE_BIT_PWT 3
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#define _PAGE_BIT_PCD 4
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#define _PAGE_BIT_ACCESSED 5
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#define _PAGE_BIT_DIRTY 6
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#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page, Pentium+, if present.. */
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#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
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#define _PAGE_BIT_UNUSED1 9 /* available for programmer */
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#define _PAGE_BIT_UNUSED2 10
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#define _PAGE_BIT_UNUSED3 11
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#define _PAGE_BIT_NX 63
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#define _PAGE_PRESENT 0x001
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#define _PAGE_RW 0x002
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#define _PAGE_USER 0x004
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#define _PAGE_PWT 0x008
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#define _PAGE_PCD 0x010
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#define _PAGE_ACCESSED 0x020
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#define _PAGE_DIRTY 0x040
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#define _PAGE_PSE 0x080 /* 4 MB (or 2MB) page, Pentium+, if present.. */
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#define _PAGE_GLOBAL 0x100 /* Global TLB entry PPro+ */
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#define _PAGE_UNUSED1 0x200 /* available for programmer */
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#define _PAGE_UNUSED2 0x400
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#define _PAGE_UNUSED3 0x800
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/* If _PAGE_PRESENT is clear, we use these: */
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#define _PAGE_FILE 0x040 /* nonlinear file mapping, saved PTE; unset:swap */
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#define _PAGE_PROTNONE 0x080 /* if the user mapped it with PROT_NONE;
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pte_present gives true */
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#ifdef CONFIG_X86_PAE
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#define _PAGE_NX (1ULL<<_PAGE_BIT_NX)
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#else
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#define _PAGE_NX 0
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#endif
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#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define PAGE_NONE \
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__pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
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#define PAGE_SHARED \
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__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
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#define PAGE_SHARED_EXEC \
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__pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
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#define PAGE_COPY_NOEXEC \
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__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_COPY_EXEC \
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__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
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#define PAGE_COPY \
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PAGE_COPY_NOEXEC
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#define PAGE_READONLY \
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__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_READONLY_EXEC \
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__pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
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#define _PAGE_KERNEL \
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(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX)
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#define _PAGE_KERNEL_EXEC \
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(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
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extern unsigned long long __PAGE_KERNEL, __PAGE_KERNEL_EXEC;
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#define __PAGE_KERNEL_RO (__PAGE_KERNEL & ~_PAGE_RW)
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#define __PAGE_KERNEL_RX (__PAGE_KERNEL_EXEC & ~_PAGE_RW)
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#define __PAGE_KERNEL_NOCACHE (__PAGE_KERNEL | _PAGE_PCD | _PAGE_PWT)
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#define __PAGE_KERNEL_LARGE (__PAGE_KERNEL | _PAGE_PSE)
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#define __PAGE_KERNEL_LARGE_EXEC (__PAGE_KERNEL_EXEC | _PAGE_PSE)
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#define PAGE_KERNEL __pgprot(__PAGE_KERNEL)
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#define PAGE_KERNEL_RO __pgprot(__PAGE_KERNEL_RO)
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#define PAGE_KERNEL_EXEC __pgprot(__PAGE_KERNEL_EXEC)
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#define PAGE_KERNEL_RX __pgprot(__PAGE_KERNEL_RX)
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#define PAGE_KERNEL_NOCACHE __pgprot(__PAGE_KERNEL_NOCACHE)
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#define PAGE_KERNEL_LARGE __pgprot(__PAGE_KERNEL_LARGE)
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#define PAGE_KERNEL_LARGE_EXEC __pgprot(__PAGE_KERNEL_LARGE_EXEC)
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/*
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* The i386 can't do page protection for execute, and considers that
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* the same are read. Also, write permissions imply read permissions.
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* This is the closest we can get..
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*/
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#define __P000 PAGE_NONE
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#define __P001 PAGE_READONLY
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#define __P010 PAGE_COPY
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#define __P011 PAGE_COPY
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#define __P100 PAGE_READONLY_EXEC
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#define __P101 PAGE_READONLY_EXEC
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#define __P110 PAGE_COPY_EXEC
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#define __P111 PAGE_COPY_EXEC
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#define __S000 PAGE_NONE
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#define __S001 PAGE_READONLY
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#define __S010 PAGE_SHARED
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#define __S011 PAGE_SHARED
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#define __S100 PAGE_READONLY_EXEC
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#define __S101 PAGE_READONLY_EXEC
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#define __S110 PAGE_SHARED_EXEC
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#define __S111 PAGE_SHARED_EXEC
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/*
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* Define this if things work differently on an i386 and an i486:
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* it will (on an i486) warn about kernel memory accesses that are
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@ -131,8 +131,6 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long
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#define PGDIR_SIZE (_AC(1,UL) << PGDIR_SHIFT)
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#define PGDIR_MASK (~(PGDIR_SIZE-1))
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#define USER_PTRS_PER_PGD ((TASK_SIZE-1)/PGDIR_SIZE+1)
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#define FIRST_USER_ADDRESS 0
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#define MAXMEM _AC(0x3fffffffffff, UL)
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#define VMALLOC_START _AC(0xffffc20000000000, UL)
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@ -142,95 +140,6 @@ static inline pte_t ptep_get_and_clear_full(struct mm_struct *mm, unsigned long
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#define MODULES_END _AC(0xfffffffffff00000, UL)
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#define MODULES_LEN (MODULES_END - MODULES_VADDR)
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#define _PAGE_BIT_PRESENT 0
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#define _PAGE_BIT_RW 1
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#define _PAGE_BIT_USER 2
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#define _PAGE_BIT_PWT 3
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#define _PAGE_BIT_PCD 4
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#define _PAGE_BIT_ACCESSED 5
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#define _PAGE_BIT_DIRTY 6
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#define _PAGE_BIT_PSE 7 /* 4 MB (or 2MB) page */
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#define _PAGE_BIT_FILE 6
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#define _PAGE_BIT_GLOBAL 8 /* Global TLB entry PPro+ */
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#define _PAGE_BIT_NX 63 /* No execute: only valid after cpuid check */
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#define _PAGE_PRESENT (_AC(1, UL)<<_PAGE_BIT_PRESENT)
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#define _PAGE_RW (_AC(1, UL)<<_PAGE_BIT_RW)
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#define _PAGE_USER (_AC(1, UL)<<_PAGE_BIT_USER)
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#define _PAGE_PWT (_AC(1, UL)<<_PAGE_BIT_PWT)
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#define _PAGE_PCD (_AC(1, UL)<<_PAGE_BIT_PCD)
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#define _PAGE_ACCESSED (_AC(1, UL)<<_PAGE_BIT_ACCESSED)
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#define _PAGE_DIRTY (_AC(1, UL)<<_PAGE_BIT_DIRTY)
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/* 2MB page */
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#define _PAGE_PSE (_AC(1, UL)<<_PAGE_BIT_PSE)
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/* nonlinear file mapping, saved PTE; unset:swap */
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#define _PAGE_FILE (_AC(1, UL)<<_PAGE_BIT_FILE)
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/* Global TLB entry */
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#define _PAGE_GLOBAL (_AC(1, UL)<<_PAGE_BIT_GLOBAL)
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#define _PAGE_PROTNONE 0x080 /* If not present */
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#define _PAGE_NX (_AC(1, UL)<<_PAGE_BIT_NX)
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#define _PAGE_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _KERNPG_TABLE (_PAGE_PRESENT | _PAGE_RW | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define _PAGE_CHG_MASK (PTE_MASK | _PAGE_ACCESSED | _PAGE_DIRTY)
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#define PAGE_NONE __pgprot(_PAGE_PROTNONE | _PAGE_ACCESSED)
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#define PAGE_SHARED __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_SHARED_EXEC __pgprot(_PAGE_PRESENT | _PAGE_RW | _PAGE_USER | _PAGE_ACCESSED)
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#define PAGE_COPY_NOEXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_COPY PAGE_COPY_NOEXEC
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#define PAGE_COPY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
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#define PAGE_READONLY __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_NX)
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#define PAGE_READONLY_EXEC __pgprot(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
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#define __PAGE_KERNEL \
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(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX)
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#define __PAGE_KERNEL_EXEC \
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(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_ACCESSED)
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#define __PAGE_KERNEL_NOCACHE \
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(_PAGE_PRESENT | _PAGE_RW | _PAGE_DIRTY | _PAGE_PCD | _PAGE_PWT | _PAGE_ACCESSED | _PAGE_NX)
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#define __PAGE_KERNEL_RO \
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(_PAGE_PRESENT | _PAGE_DIRTY | _PAGE_ACCESSED | _PAGE_NX)
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#define __PAGE_KERNEL_VSYSCALL \
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(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED)
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#define __PAGE_KERNEL_VSYSCALL_NOCACHE \
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(_PAGE_PRESENT | _PAGE_USER | _PAGE_ACCESSED | _PAGE_PCD | _PAGE_PWT)
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#define __PAGE_KERNEL_LARGE \
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(__PAGE_KERNEL | _PAGE_PSE)
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#define __PAGE_KERNEL_LARGE_EXEC \
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(__PAGE_KERNEL_EXEC | _PAGE_PSE)
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#define MAKE_GLOBAL(x) __pgprot((x) | _PAGE_GLOBAL)
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#define PAGE_KERNEL MAKE_GLOBAL(__PAGE_KERNEL)
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#define PAGE_KERNEL_EXEC MAKE_GLOBAL(__PAGE_KERNEL_EXEC)
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#define PAGE_KERNEL_RO MAKE_GLOBAL(__PAGE_KERNEL_RO)
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#define PAGE_KERNEL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_NOCACHE)
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#define PAGE_KERNEL_VSYSCALL32 __pgprot(__PAGE_KERNEL_VSYSCALL)
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#define PAGE_KERNEL_VSYSCALL MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL)
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#define PAGE_KERNEL_LARGE MAKE_GLOBAL(__PAGE_KERNEL_LARGE)
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#define PAGE_KERNEL_VSYSCALL_NOCACHE MAKE_GLOBAL(__PAGE_KERNEL_VSYSCALL_NOCACHE)
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/* xwr */
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#define __P000 PAGE_NONE
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#define __P001 PAGE_READONLY
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#define __P010 PAGE_COPY
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#define __P011 PAGE_COPY
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#define __P100 PAGE_READONLY_EXEC
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#define __P101 PAGE_READONLY_EXEC
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#define __P110 PAGE_COPY_EXEC
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#define __P111 PAGE_COPY_EXEC
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#define __S000 PAGE_NONE
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#define __S001 PAGE_READONLY
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#define __S010 PAGE_SHARED
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#define __S011 PAGE_SHARED
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#define __S100 PAGE_READONLY_EXEC
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#define __S101 PAGE_READONLY_EXEC
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#define __S110 PAGE_SHARED_EXEC
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#define __S111 PAGE_SHARED_EXEC
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#ifndef __ASSEMBLY__
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static inline unsigned long pgd_bad(pgd_t pgd)
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