#define _ASM_X86_PGTABLE_H
#include <asm/page.h>
+#include <asm/e820.h>
#include <asm/pgtable_types.h>
#define canon_pgprot(p) __pgprot(massage_pgprot(p))
-static inline int is_new_memtype_allowed(unsigned long flags,
- unsigned long new_flags)
+static inline int is_new_memtype_allowed(u64 paddr, unsigned long size,
+ unsigned long flags,
+ unsigned long new_flags)
{
+ /*
+ * PAT type is always WB for ISA. So no need to check.
+ */
+ if (is_ISA_range(paddr, paddr + size - 1))
+ return 1;
+
/*
* Certain new memtypes are not allowed with certain
* requested memtype: