83a5101bf2
# 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>
116 lines
3.2 KiB
C
116 lines
3.2 KiB
C
#ifndef _ASM_X86_PAGE_H
|
|
#define _ASM_X86_PAGE_H
|
|
|
|
#include <linux/const.h>
|
|
|
|
/* PAGE_SHIFT determines the page size */
|
|
#define PAGE_SHIFT 12
|
|
#define PAGE_SIZE (_AC(1,UL) << PAGE_SHIFT)
|
|
#define PAGE_MASK (~(PAGE_SIZE-1))
|
|
|
|
#define PHYSICAL_PAGE_MASK (PAGE_MASK & __PHYSICAL_MASK)
|
|
|
|
#define LARGE_PAGE_SIZE (_AC(1,UL) << PMD_SHIFT)
|
|
#define LARGE_PAGE_MASK (~(LARGE_PAGE_SIZE-1))
|
|
|
|
#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)
|
|
|
|
/* to align the pointer to the (next) page boundary */
|
|
#define PAGE_ALIGN(addr) (((addr)+PAGE_SIZE-1)&PAGE_MASK)
|
|
|
|
#define __PHYSICAL_MASK ((_AC(1,UL) << __PHYSICAL_MASK_SHIFT) - 1)
|
|
#define __VIRTUAL_MASK ((_AC(1,UL) << __VIRTUAL_MASK_SHIFT) - 1)
|
|
|
|
|
|
#ifdef CONFIG_X86_64
|
|
#define THREAD_ORDER 1
|
|
#define THREAD_SIZE (PAGE_SIZE << THREAD_ORDER)
|
|
#define CURRENT_MASK (~(THREAD_SIZE-1))
|
|
|
|
#define EXCEPTION_STACK_ORDER 0
|
|
#define EXCEPTION_STKSZ (PAGE_SIZE << EXCEPTION_STACK_ORDER)
|
|
|
|
#define DEBUG_STACK_ORDER (EXCEPTION_STACK_ORDER + 1)
|
|
#define DEBUG_STKSZ (PAGE_SIZE << DEBUG_STACK_ORDER)
|
|
|
|
#define IRQSTACK_ORDER 2
|
|
#define IRQSTACKSIZE (PAGE_SIZE << IRQSTACK_ORDER)
|
|
|
|
#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 */
|
|
|
|
#define __PAGE_OFFSET _AC(0xffff810000000000, UL)
|
|
|
|
#define __PHYSICAL_START CONFIG_PHYSICAL_START
|
|
#define __KERNEL_ALIGN 0x200000
|
|
|
|
/*
|
|
* 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
|
|
|
|
#define __START_KERNEL (__START_KERNEL_map + __PHYSICAL_START)
|
|
#define __START_KERNEL_map _AC(0xffffffff80000000, UL)
|
|
|
|
/* See Documentation/x86_64/mm.txt for a description of the memory map. */
|
|
#define __PHYSICAL_MASK_SHIFT 46
|
|
#define __VIRTUAL_MASK_SHIFT 48
|
|
|
|
#define KERNEL_TEXT_SIZE (40*1024*1024)
|
|
#define KERNEL_TEXT_START _AC(0xffffffff80000000, UL)
|
|
|
|
#endif /* CONFIG_X86_64 */
|
|
|
|
#ifdef CONFIG_X86_32
|
|
|
|
/*
|
|
* 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)
|
|
|
|
#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 */
|
|
|
|
#ifdef CONFIG_HUGETLB_PAGE
|
|
#define HAVE_ARCH_HUGETLB_UNMAPPED_AREA
|
|
#endif
|
|
|
|
#endif /* CONFIG_X86_32 */
|
|
|
|
#define PAGE_OFFSET ((unsigned long)__PAGE_OFFSET)
|
|
|
|
#define VM_DATA_DEFAULT_FLAGS \
|
|
(((current->personality & READ_IMPLIES_EXEC) ? VM_EXEC : 0 ) | \
|
|
VM_READ | VM_WRITE | VM_MAYREAD | VM_MAYWRITE | VM_MAYEXEC)
|
|
|
|
|
|
#ifdef CONFIG_X86_32
|
|
# include "page_32.h"
|
|
#else
|
|
# include "page_64.h"
|
|
#endif
|
|
|
|
#endif /* _ASM_X86_PAGE_H */
|