a416e9e1dd
On 32-bit non-PAE system, cast to 'phys_addr_t' truncates value before subtraction. Subtracting before cast produce same result but remove following warnings from sparse: arch/x86/include/asm/pgtable_types.h:255:38: warning: cast truncates bits from constant value (100000000 becomes 0) arch/x86/include/asm/pgtable_types.h:270:38: warning: cast truncates bits from constant value (100000000 becomes 0) arch/x86/include/asm/pgtable.h:127:32: warning: cast truncates bits from constant value (100000000 becomes 0) arch/x86/include/asm/pgtable.h:132:32: warning: cast truncates bits from constant value (100000000 becomes 0) arch/x86/include/asm/pgtable.h:344:31: warning: cast truncates bits from constant value (100000000 becomes 0) 64-bit or PAE machines will not be affected by this change. Signed-off-by: Namhyung Kim <namhyung@gmail.com> LKML-Reference: <1285770588-14065-1-git-send-email-namhyung@gmail.com> Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
58 lines
1.6 KiB
C
58 lines
1.6 KiB
C
#ifndef _ASM_X86_PAGE_DEFS_H
|
|
#define _ASM_X86_PAGE_DEFS_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_MASK ((phys_addr_t)((1ULL << __PHYSICAL_MASK_SHIFT) - 1))
|
|
#define __VIRTUAL_MASK ((1UL << __VIRTUAL_MASK_SHIFT) - 1)
|
|
|
|
/* Cast PAGE_MASK to a signed type so that it is sign-extended if
|
|
virtual addresses are 32-bits but physical addresses are larger
|
|
(ie, 32-bit PAE). */
|
|
#define PHYSICAL_PAGE_MASK (((signed long)PAGE_MASK) & __PHYSICAL_MASK)
|
|
|
|
#define PMD_PAGE_SIZE (_AC(1, UL) << PMD_SHIFT)
|
|
#define PMD_PAGE_MASK (~(PMD_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)
|
|
|
|
#define HUGE_MAX_HSTATE 2
|
|
|
|
#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_64
|
|
#include <asm/page_64_types.h>
|
|
#else
|
|
#include <asm/page_32_types.h>
|
|
#endif /* CONFIG_X86_64 */
|
|
|
|
#ifndef __ASSEMBLY__
|
|
|
|
extern int devmem_is_allowed(unsigned long pagenr);
|
|
|
|
extern unsigned long max_low_pfn_mapped;
|
|
extern unsigned long max_pfn_mapped;
|
|
|
|
extern unsigned long init_memory_mapping(unsigned long start,
|
|
unsigned long end);
|
|
|
|
extern void initmem_init(unsigned long start_pfn, unsigned long end_pfn,
|
|
int acpi, int k8);
|
|
extern void free_initmem(void);
|
|
|
|
#endif /* !__ASSEMBLY__ */
|
|
|
|
#endif /* _ASM_X86_PAGE_DEFS_H */
|