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x86: page.h: move pa and va related things

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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>

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
This commit is contained in:
Jeremy Fitzhardinge 2008-01-30 13:32:43 +01:00 committed by Ingo Molnar
parent 6724a1d2fc
commit 98fd5aee34
3 changed files with 24 additions and 24 deletions
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24
include/asm-x86/page.h
View File

@ -80,6 +80,9 @@
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(unsigned long val)
#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(pmd_t pmd)
#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__ */

11
include/asm-x86/page_32.h
View File

@ -29,18 +29,7 @@ extern int page_is_ram(unsigned long pagenr);
#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>

13
include/asm-x86/page_64.h
View File

@ -16,21 +16,8 @@ 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)