[PATCH v4 27/36] x86: Implement the new page table range API

[Matthew Wilcox (Oracle)]

Add PFN_PTE_SHIFT and a noop update_mmu_cache_range().

Signed-off-by: Matthew Wilcox (Oracle) <willy@xxxxxxxxxxxxx>
Cc: Thomas Gleixner <tglx@xxxxxxxxxxxxx>
Cc: Ingo Molnar <mingo@xxxxxxxxxx>
Cc: Borislav Petkov <bp@xxxxxxxxx>
Cc: Dave Hansen <dave.hansen@xxxxxxxxxxxxxxx>
Cc: x86@xxxxxxxxxx
Cc: "H. Peter Anvin" <hpa@xxxxxxxxx>
---
 arch/x86/include/asm/pgtable.h | 13 ++++++-------
 1 file changed, 6 insertions(+), 7 deletions(-)

diff --git a/arch/x86/include/asm/pgtable.h b/arch/x86/include/asm/pgtable.h
index 1031025730d0..b237878061c4 100644
--- a/arch/x86/include/asm/pgtable.h
+++ b/arch/x86/include/asm/pgtable.h
@@ -184,6 +184,8 @@ static inline int pte_special(pte_t pte)
 
 static inline u64 protnone_mask(u64 val);
 
+#define PFN_PTE_SHIFT	PAGE_SHIFT
+
 static inline unsigned long pte_pfn(pte_t pte)
 {
 	phys_addr_t pfn = pte_val(pte);
@@ -1019,13 +1021,6 @@ static inline pud_t native_local_pudp_get_and_clear(pud_t *pudp)
 	return res;
 }
 
-static inline void set_pte_at(struct mm_struct *mm, unsigned long addr,
-			      pte_t *ptep, pte_t pte)
-{
-	page_table_check_ptes_set(mm, addr, ptep, pte, 1);
-	set_pte(ptep, pte);
-}
-
 static inline void set_pmd_at(struct mm_struct *mm, unsigned long addr,
 			      pmd_t *pmdp, pmd_t pmd)
 {
@@ -1291,6 +1286,10 @@ static inline void update_mmu_cache(struct vm_area_struct *vma,
 		unsigned long addr, pte_t *ptep)
 {
 }
+static inline void update_mmu_cache_range(struct vm_area_struct *vma,
+		unsigned long addr, pte_t *ptep, unsigned int nr)
+{
+}
 static inline void update_mmu_cache_pmd(struct vm_area_struct *vma,
 		unsigned long addr, pmd_t *pmd)
 {
-- 
2.39.2