Commit 98fd5aee authored by Jeremy Fitzhardinge's avatar Jeremy Fitzhardinge Committed by Ingo Molnar
Browse files

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



# 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: default avatarJeremy Fitzhardinge <jeremy.fitzhardinge@citrix.com>

Signed-off-by: default avatarIngo Molnar <mingo@elte.hu>
Signed-off-by: default avatarThomas Gleixner <tglx@linutronix.de>
parent 6724a1d2

include/asm-x86/page.h

+24 −0
Original line number Diff line number Diff line
@@ -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__ */

include/asm-x86/page_32.h

+1 −12
Original line number Diff line number Diff line
@@ -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>

include/asm-x86/page_64.h

+0 −13
Original line number Diff line number Diff line
@@ -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)

CRA Git | Maintained and supported by SUSTech CRA and CCSE