Linux Kernel  3.7.1
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page.h
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1 #ifndef _ASM_CRIS_ARCH_PAGE_H
2 #define _ASM_CRIS_ARCH_PAGE_H
3 
4 
5 #ifdef __KERNEL__
6 
7 #define PAGE_OFFSET KSEG_C /* kseg_c is mapped to physical ram. */
8 
9 /*
10  * Macros to convert between physical and virtual addresses. By stripping a
11  * selected bit it's possible to convert between KSEG_x and 0x40000000 where the
12  * DRAM really resides. DRAM is virtually at 0xc.
13  */
14 #define __pa(x) ((unsigned long)(x) & 0x7fffffff)
15 #define __va(x) ((void *)((unsigned long)(x) | 0x80000000))
16 
17 #define VM_STACK_DEFAULT_FLAGS (VM_READ | VM_WRITE | \
18  VM_MAYREAD | VM_MAYWRITE)
19 
20 #endif /* __KERNEL__ */
21 
22 #endif /* _ASM_CRIS_ARCH_PAGE_H */