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# HG changeset patch # User Jeremy Fitzhardinge <jeremy@xensource.com> # Date 1199317360 28800 # Node ID ba0ec40a50a7aef1a3153cea124c35e261f5a2df # Parent c45c263179cb78284b6b869c574457df088027d1 x86: page.h: unify constants There are many constants which are shared by 32 and 64-bit. Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com> Signed-off-by: Ingo Molnar <mingo@elte.hu> Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
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| Original file line number | Diff line number | Diff line change |
|---|---|---|
| @@ -1,13 +1,116 @@ | ||
| #ifdef __KERNEL__ | ||
| # ifdef CONFIG_X86_32 | ||
| # include "page_32.h" | ||
| # else | ||
| # include "page_64.h" | ||
| # endif | ||
| #ifndef _ASM_X86_PAGE_H | ||
| #define _ASM_X86_PAGE_H | ||
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| #include <linux/const.h> | ||
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| /* PAGE_SHIFT determines the page size */ | ||
| #define PAGE_SHIFT 12 | ||
| #define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT) | ||
| #define PAGE_MASK (~(PAGE_SIZE-1)) | ||
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| #define PHYSICAL_PAGE_MASK (PAGE_MASK & __PHYSICAL_MASK) | ||
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| #define LARGE_PAGE_SIZE (_AC(1,UL) << PMD_SHIFT) | ||
| #define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1)) | ||
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| #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) | ||
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| /* to align the pointer to the (next) page boundary */ | ||
| #define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK) | ||
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| #define __PHYSICAL_MASK ((_AC(1,UL) << __PHYSICAL_MASK_SHIFT) - 1) | ||
| #define __VIRTUAL_MASK ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1) | ||
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| #ifdef CONFIG_X86_64 | ||
| #define THREAD_ORDER 1 | ||
| #define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER) | ||
| #define CURRENT_MASK (~(THREAD_SIZE-1)) | ||
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| #define EXCEPTION_STACK_ORDER 0 | ||
| #define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER) | ||
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| #define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1) | ||
| #define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER) | ||
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| #define IRQSTACK_ORDER 2 | ||
| #define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER) | ||
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| #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 */ | ||
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| #define __PAGE_OFFSET _AC(0xffff810000000000, UL) | ||
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| #define __PHYSICAL_START CONFIG_PHYSICAL_START | ||
| #define __KERNEL_ALIGN 0x200000 | ||
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| /* | ||
| * 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 | ||
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| #define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START) | ||
| #define __START_KERNEL_map _AC(0xffffffff80000000, UL) | ||
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| /* See Documentation/x86_64/mm.txt for a description of the memory map. */ | ||
| #define __PHYSICAL_MASK_SHIFT 46 | ||
| #define __VIRTUAL_MASK_SHIFT 48 | ||
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| #define KERNEL_TEXT_SIZE (40*1024*1024) | ||
| #define KERNEL_TEXT_START _AC(0xffffffff80000000, UL) | ||
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| #endif /* CONFIG_X86_64 */ | ||
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| #ifdef CONFIG_X86_32 | ||
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| /* | ||
| * This handles the memory map. | ||
| * | ||
| * 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. | ||
| */ | ||
| #define __PAGE_OFFSET _AC(CONFIG_PAGE_OFFSET, UL) | ||
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| #ifdef CONFIG_X86_PAE | ||
| #define __PHYSICAL_MASK_SHIFT 36 | ||
| #define __VIRTUAL_MASK_SHIFT 32 | ||
| #else /* !CONFIG_X86_PAE */ | ||
| #define __PHYSICAL_MASK_SHIFT 32 | ||
| #define __VIRTUAL_MASK_SHIFT 32 | ||
| #endif /* CONFIG_X86_PAE */ | ||
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| #ifdef CONFIG_HUGETLB_PAGE | ||
| #define HAVE_ARCH_HUGETLB_UNMAPPED_AREA | ||
| #endif | ||
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| #endif /* CONFIG_X86_32 */ | ||
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| #define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET) | ||
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| #define VM_DATA_DEFAULT_FLAGS \ | ||
| (((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \ | ||
| VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC) | ||
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| #ifdef CONFIG_X86_32 | ||
| # include "page_32.h" | ||
| #else | ||
| # ifdef __i386__ | ||
| # include "page_32.h" | ||
| # else | ||
| # include "page_64.h" | ||
| # endif | ||
| # include "page_64.h" | ||
| #endif | ||
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| #endif /* _ASM_X86_PAGE_H */ |
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