1 files changed, 1 insertions, 1 deletions

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 1de2094d2e57..a34c785c5a63 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -274,7 +274,7 @@ static inline int is_new_memtype_allowed(u64 paddr, unsigned long size,
         /*
          * PAT type is always WB for untracked ranges, so no need to check.
          */
-        if (x86_platform.is_untracked_pat_range(paddr, paddr + size - 1))
+        if (x86_platform.is_untracked_pat_range(paddr, paddr + size))
                 return 1;
 
         /*