diff options
Diffstat (limited to 'include/asm-x86/page.h')
| -rw-r--r-- | include/asm-x86/page.h | 15 |
1 files changed, 11 insertions, 4 deletions
diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h index 49982110e4d9..d4f1d5791fc1 100644 --- a/include/asm-x86/page.h +++ b/include/asm-x86/page.h @@ -1,5 +1,5 @@ -#ifndef _ASM_X86_PAGE_H -#define _ASM_X86_PAGE_H +#ifndef ASM_X86__PAGE_H +#define ASM_X86__PAGE_H #include <linux/const.h> @@ -57,6 +57,7 @@ typedef struct { pgdval_t pgd; } pgd_t; typedef struct { pgprotval_t pgprot; } pgprot_t; extern int page_is_ram(unsigned long pagenr); +extern int pagerange_is_ram(unsigned long start, unsigned long end); extern int devmem_is_allowed(unsigned long pagenr); extern void map_devmem(unsigned long pfn, unsigned long size, pgprot_t vma_prot); @@ -178,6 +179,7 @@ static inline pteval_t native_pte_flags(pte_t pte) #endif /* CONFIG_PARAVIRT */ #define __pa(x) __phys_addr((unsigned long)(x)) +#define __pa_nodebug(x) __phys_addr_nodebug((unsigned long)(x)) /* __pa_symbol should be used for C visible symbols. This seems to be the official gcc blessed way to do such arithmetic. */ #define __pa_symbol(x) __pa(__phys_reloc_hide((unsigned long)(x))) @@ -187,9 +189,14 @@ static inline pteval_t native_pte_flags(pte_t pte) #define __boot_va(x) __va(x) #define __boot_pa(x) __pa(x) +/* + * virt_to_page(kaddr) returns a valid pointer if and only if + * virt_addr_valid(kaddr) returns true. + */ #define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) #define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) +extern bool __virt_addr_valid(unsigned long kaddr); +#define virt_addr_valid(kaddr) __virt_addr_valid((unsigned long) (kaddr)) #endif /* __ASSEMBLY__ */ @@ -199,4 +206,4 @@ static inline pteval_t native_pte_flags(pte_t pte) #define __HAVE_ARCH_GATE_AREA 1 #endif /* __KERNEL__ */ -#endif /* _ASM_X86_PAGE_H */ +#endif /* ASM_X86__PAGE_H */ |