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-rw-r--r--include/asm-x86/paravirt.h3
1 files changed, 3 insertions, 0 deletions
diff --git a/include/asm-x86/paravirt.h b/include/asm-x86/paravirt.h
index 1b7eff0b41b..2e6821a0b6e 100644
--- a/include/asm-x86/paravirt.h
+++ b/include/asm-x86/paravirt.h
@@ -1088,6 +1088,9 @@ static inline pteval_t pte_flags(pte_t pte)
ret = PVOP_CALL1(pteval_t, pv_mmu_ops.pte_flags,
pte.pte);
+#ifdef CONFIG_PARAVIRT_DEBUG
+ BUG_ON(ret & PTE_PFN_MASK);
+#endif
return ret;
}