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.wang2...@gmail.com>
---
arch/arm64/include/asm/memory.h | 1 +
arch/arm64/include/asm/pgtable.h | 2 ++
2 files changed, 3 insertions(+)
diff --git a/arch/arm64/include/asm/memory.h b/arch/arm64/include/asm/memory.h
index f800d45..2d09fe8 100644
--- a/arch/arm64/include/asm/memory.h
+++ b/arch/arm64/include/asm/memory.h
@@ -55,6 +55,7 @@
#define PCI_IO_START (PCI_IO_END - PCI_IO_SIZE)
#define FIXADDR_TOP (PCI_IO_START - SZ_2M)
#define TASK_SIZE_64 (UL(1) << VA_BITS)
+#define __VIRTUAL_MASK ((1UL << VA_BITS) - 1)
#ifdef CONFIG_COMPAT
#define TASK_SIZE_32 UL(0x100000000)
diff --git a/arch/arm64/include/asm/pgtable.h b/arch/arm64/include/asm/pgtable.h
index d374191..9da6681 100644
--- a/arch/arm64/include/asm/pgtable.h
+++ b/arch/arm64/include/asm/pgtable.h
@@ -660,6 +660,8 @@ 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) & __VIRTUAL_MASK)
+#define kc_offset_to_vaddr(o) ((o) | ~__VIRTUAL_MASK)
#endif /* !__ASSEMBLY__ */
#endif /* __ASM_PGTABLE_H */
--
1.9.1
--
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