The default pmd_addr_end macro uses an unsigned long to represent
the VA. When used with KVM and stage-2 translation, the VA is
actually an IPA, which is up to 40 bits. This also affect the
SMMU driver, which also deals with stage-2 translation.
Instead, provide an implementation that can cope with larger VAs
by using a u64 instead. This version will overload the default
one provided in include/asm-generic/pgtable.h.
Signed-off-by: Marc Zyngier <marc.zyngier@xxxxxxx>
---
arch/arm/include/asm/pgtable-3level.h | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/arch/arm/include/asm/pgtable-3level.h b/arch/arm/include/asm/pgtable-3level.h
index 03243f7..594867b 100644
--- a/arch/arm/include/asm/pgtable-3level.h
+++ b/arch/arm/include/asm/pgtable-3level.h
@@ -262,6 +262,11 @@ static inline int has_transparent_hugepage(void)
return 1;
}
+#define pmd_addr_end(addr, end) \
+({ u64 __boundary = ((addr) + PMD_SIZE) & PMD_MASK; \
+ (__boundary - 1 < (end) - 1)? __boundary: (end); \
+})
+
#endif /* __ASSEMBLY__ */
#endif /* _ASM_PGTABLE_3LEVEL_H */
--
1.8.3.4
--
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