Messages in this thread Patch in this message | | | Subject | [PATCH 5 of 8] x86: page.h: move pa and va related things | Date | Thu, 03 Jan 2008 12:11:02 -0800 | From | Jeremy Fitzhardinge <> |
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# HG changeset patch # User Jeremy Fitzhardinge <jeremy@xensource.com> # Date 1199319656 28800 # Node ID d617b72a0cc9d14bde2087d065c36d4ed3265761 # Parent 3bd7db6e85e66e7f3362874802df26a82fcb2d92 x86: page.h: move pa and va related things
Move and unify the virtual<->physical address space conversion functions.
Signed-off-by: Jeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>
--- include/asm-x86/page.h | 24 ++++++++++++++++++++++++ include/asm-x86/page_32.h | 11 ----------- include/asm-x86/page_64.h | 13 ------------- 3 files changed, 24 insertions(+), 24 deletions(-)
diff --git a/include/asm-x86/page.h b/include/asm-x86/page.h --- a/include/asm-x86/page.h +++ b/include/asm-x86/page.h @@ -79,6 +79,9 @@ #ifndef __ASSEMBLY__ void clear_page(void *page); void copy_page(void *to, void *from); + +extern unsigned long __phys_addr(unsigned long); +#define __phys_reloc_hide(x) (x) /* * These are used to make use of C type-checking.. @@ -174,6 +177,13 @@ static inline pte_t native_make_pte(unsi #endif #ifndef __ASSEMBLY__ +#define __phys_addr(x) ((x)-PAGE_OFFSET) +#define __phys_reloc_hide(x) RELOC_HIDE((x), 0) + +#ifdef CONFIG_FLATMEM +#define pfn_valid(pfn) ((pfn) < max_mapnr) +#endif /* CONFIG_FLATMEM */ + #ifdef CONFIG_X86_USE_3DNOW #include <asm/mmx.h> @@ -299,6 +309,20 @@ static inline pmdval_t native_pmd_val(pm #endif /* CONFIG_PARAVIRT */ +#define __pa(x) __phys_addr((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))) + +#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) + +#define __boot_va(x) __va(x) +#define __boot_pa(x) __pa(x) + +#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) + #endif /* __ASSEMBLY__ */ diff --git a/include/asm-x86/page_32.h b/include/asm-x86/page_32.h --- a/include/asm-x86/page_32.h +++ b/include/asm-x86/page_32.h @@ -29,18 +29,7 @@ extern int page_is_ram(unsigned long pag #define VMALLOC_RESERVE ((unsigned long)__VMALLOC_RESERVE) #define MAXMEM (-__PAGE_OFFSET-__VMALLOC_RESERVE) -#define __pa(x) ((unsigned long)(x)-PAGE_OFFSET) -/* __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(RELOC_HIDE((unsigned long)(x),0)) -#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) -#ifdef CONFIG_FLATMEM -#define pfn_valid(pfn) ((pfn) < max_mapnr) -#endif /* CONFIG_FLATMEM */ -#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) #include <asm-generic/memory_model.h> #include <asm-generic/page.h> diff --git a/include/asm-x86/page_64.h b/include/asm-x86/page_64.h --- a/include/asm-x86/page_64.h +++ b/include/asm-x86/page_64.h @@ -16,20 +16,7 @@ extern unsigned long phys_base; #include <asm/bug.h> -extern unsigned long __phys_addr(unsigned long); - #endif /* __ASSEMBLY__ */ - -#define __pa(x) __phys_addr((unsigned long)(x)) -#define __pa_symbol(x) __phys_addr((unsigned long)(x)) - -#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET)) -#define __boot_va(x) __va(x) -#define __boot_pa(x) __pa(x) - -#define virt_to_page(kaddr) pfn_to_page(__pa(kaddr) >> PAGE_SHIFT) -#define virt_addr_valid(kaddr) pfn_valid(__pa(kaddr) >> PAGE_SHIFT) -#define pfn_to_kaddr(pfn) __va((pfn) << PAGE_SHIFT) #define __HAVE_ARCH_GATE_AREA 1 #define vmemmap ((struct page *)VMEMMAP_START)
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