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yaml
---
r: 356155
b: refs/heads/master
c: 7d74275
h: refs/heads/master
i:
  356153: 9fd3dd6
  356151: d9db475
v: v3
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Alexander Duyck authored and H. Peter Anvin committed Nov 17, 2012
1 parent 2b12006 commit 38bc905
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Showing 5 changed files with 18 additions and 2 deletions.
2 changes: 1 addition & 1 deletion [refs]
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@@ -1,2 +1,2 @@
---
refs/heads/master: 0bdf525f04afd3a32c14e5a8778771f9c9e0f074
refs/heads/master: 7d74275d39def4d3ccc8cf4725388bf79ef13861
3 changes: 2 additions & 1 deletion trunk/arch/x86/include/asm/page.h
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Expand Up @@ -44,7 +44,8 @@ static inline void copy_user_page(void *to, void *from, unsigned long vaddr,
* case properly. Once all supported versions of gcc understand it, we can
* remove this Voodoo magic stuff. (i.e. once gcc3.x is deprecated)
*/
#define __pa_symbol(x) __pa(__phys_reloc_hide((unsigned long)(x)))
#define __pa_symbol(x) \
__phys_addr_symbol(__phys_reloc_hide((unsigned long)(x)))

#define __va(x) ((void *)((unsigned long)(x)+PAGE_OFFSET))

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1 change: 1 addition & 0 deletions trunk/arch/x86/include/asm/page_32.h
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Expand Up @@ -15,6 +15,7 @@ extern unsigned long __phys_addr(unsigned long);
#else
#define __phys_addr(x) __phys_addr_nodebug(x)
#endif
#define __phys_addr_symbol(x) __phys_addr(x)
#define __phys_reloc_hide(x) RELOC_HIDE((x), 0)

#ifdef CONFIG_FLATMEM
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3 changes: 3 additions & 0 deletions trunk/arch/x86/include/asm/page_64.h
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Expand Up @@ -21,8 +21,11 @@ static inline unsigned long __phys_addr_nodebug(unsigned long x)

#ifdef CONFIG_DEBUG_VIRTUAL
extern unsigned long __phys_addr(unsigned long);
extern unsigned long __phys_addr_symbol(unsigned long);
#else
#define __phys_addr(x) __phys_addr_nodebug(x)
#define __phys_addr_symbol(x) \
((unsigned long)(x) - __START_KERNEL_map + phys_base)
#endif

#define __phys_reloc_hide(x) (x)
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11 changes: 11 additions & 0 deletions trunk/arch/x86/mm/physaddr.c
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Expand Up @@ -28,6 +28,17 @@ unsigned long __phys_addr(unsigned long x)
return x;
}
EXPORT_SYMBOL(__phys_addr);

unsigned long __phys_addr_symbol(unsigned long x)
{
unsigned long y = x - __START_KERNEL_map;

/* only check upper bounds since lower bounds will trigger carry */
VIRTUAL_BUG_ON(y >= KERNEL_IMAGE_SIZE);

return y + phys_base;
}
EXPORT_SYMBOL(__phys_addr_symbol);
#endif

bool __virt_addr_valid(unsigned long x)
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