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| author | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 02:39:40 +0100 |
|---|---|---|
| committer | Linus Torvalds <torvalds@linux-foundation.org> | 2012-01-11 02:39:40 +0100 |
| commit | 06792c4dde2ad143928cc95c1ba218c6269c494b (patch) | |
| tree | 92bdd4631612c9e3d8e5f6f06839f75c5473300a /include/asm-generic/page.h | |
| parent | Merge branch 'next' of git://git.monstr.eu/linux-2.6-microblaze (diff) | |
| parent | C6X: replace tick_nohz_stop/restart_sched_tick calls (diff) | |
| download | linux-06792c4dde2ad143928cc95c1ba218c6269c494b.tar.xz linux-06792c4dde2ad143928cc95c1ba218c6269c494b.zip | |
Merge tag 'for-linux-3.3-merge-window' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming
* tag 'for-linux-3.3-merge-window' of git://linux-c6x.org/git/projects/linux-c6x-upstreaming: (29 commits)
C6X: replace tick_nohz_stop/restart_sched_tick calls
C6X: add register_cpu call
C6X: deal with memblock API changes
C6X: fix timer64 initialization
C6X: fix layout of EMIFA registers
C6X: MAINTAINERS
C6X: DSCR - Device State Configuration Registers
C6X: EMIF - External Memory Interface
C6X: general SoC support
C6X: library code
C6X: headers
C6X: ptrace support
C6X: loadable module support
C6X: cache control
C6X: clocks
C6X: build infrastructure
C6X: syscalls
C6X: interrupt handling
C6X: time management
C6X: signal management
...
Diffstat (limited to 'include/asm-generic/page.h')
| -rw-r--r-- | include/asm-generic/page.h | 10 |
1 files changed, 7 insertions, 3 deletions
diff --git a/include/asm-generic/page.h b/include/asm-generic/page.h index 351889d1de19..37d1fe28960a 100644 --- a/include/asm-generic/page.h +++ b/include/asm-generic/page.h @@ -71,10 +71,14 @@ extern unsigned long memory_end; #define PAGE_OFFSET (0) #endif +#ifndef ARCH_PFN_OFFSET +#define ARCH_PFN_OFFSET (PAGE_OFFSET >> PAGE_SHIFT) +#endif + #ifndef __ASSEMBLY__ -#define __va(x) ((void *)((unsigned long)(x) + PAGE_OFFSET)) -#define __pa(x) ((unsigned long) (x) - PAGE_OFFSET) +#define __va(x) ((void *)((unsigned long) (x))) +#define __pa(x) ((unsigned long) (x)) #define virt_to_pfn(kaddr) (__pa(kaddr) >> PAGE_SHIFT) #define pfn_to_virt(pfn) __va((pfn) << PAGE_SHIFT) @@ -86,7 +90,7 @@ extern unsigned long memory_end; #define page_to_phys(page) ((dma_addr_t)page_to_pfn(page) << PAGE_SHIFT) #endif -#define pfn_valid(pfn) ((pfn) < max_mapnr) +#define pfn_valid(pfn) ((pfn) >= ARCH_PFN_OFFSET && ((pfn) - ARCH_PFN_OFFSET) < max_mapnr) #define virt_addr_valid(kaddr) (((void *)(kaddr) >= (void *)PAGE_OFFSET) && \ ((void *)(kaddr) < (void *)memory_end)) |