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arm64: add kc_offset_to_vaddr and kc_vaddr_to_offset macro 

This patch add kc_offset_to_vaddr() and kc_vaddr_to_offset(),
the default version doesn't work on arm64, because arm64 kernel address
is below the PAGE_OFFSET, like module address and vmemmap address are
all below PAGE_OFFSET address.

Signed-off-by: yalin wang <yalin.wang2010@gmail.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
This commit is contained in:
yalin wang 2015-10-12 14:52:59 +08:00 committed by Catalin Marinas
parent 1b6d7f8742
commit 03875ad52f
1 changed files with 2 additions and 0 deletions
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2
arch/arm64/include/asm/pgtable.h
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@ -673,6 +673,8 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
#define update_mmu_cache_pmd(vma, address, pmd) do { } while (0)
#define kc_vaddr_to_offset(v) ((v) & ~VA_START)
#define kc_offset_to_vaddr(o) ((o) | VA_START)
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_PGTABLE_H */