[PATCH] i386: Evaluate constant cpu features at runtime

[powerpc.git] / include / asm-i386 / pgtable-3level.h

diff --git a/include/asm-i386/pgtable-3level.h b/include/asm-i386/pgtable-3level.h
index 7a2318f..eb0f1d7 100644 (file)
--- a/include/asm-i386/pgtable-3level.h
+++ b/include/asm-i386/pgtable-3level.h
@@ -42,20 +42,23 @@ static inline int pte_exec_kernel(pte_t pte)
        return pte_x(pte);
 }
 
-#ifndef CONFIG_PARAVIRT
 /* Rules for using set_pte: the pte being assigned *must* be
  * either not present or in a state where the hardware will
  * not attempt to update the pte.  In places where this is
  * not possible, use pte_get_and_clear to obtain the old pte
  * value and then use set_pte to update it.  -ben
  */
-static inline void set_pte(pte_t *ptep, pte_t pte)
+static inline void native_set_pte(pte_t *ptep, pte_t pte)
 {
        ptep->pte_high = pte.pte_high;
        smp_wmb();
        ptep->pte_low = pte.pte_low;
 }
-#define set_pte_at(mm,addr,ptep,pteval) set_pte(ptep,pteval)
+static inline void native_set_pte_at(struct mm_struct *mm, unsigned long addr,
+                                    pte_t *ptep , pte_t pte)
+{
+       native_set_pte(ptep, pte);
+}
 
 /*
  * Since this is only called on user PTEs, and the page fault handler
@@ -63,7 +66,8 @@ static inline void set_pte(pte_t *ptep, pte_t pte)
  * we are justified in merely clearing the PTE present bit, followed
  * by a set.  The ordering here is important.
  */
-static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte_t *ptep, pte_t pte)
+static inline void native_set_pte_present(struct mm_struct *mm, unsigned long addr,
+                                         pte_t *ptep, pte_t pte)
 {
        ptep->pte_low = 0;
        smp_wmb();
@@ -72,32 +76,48 @@ static inline void set_pte_present(struct mm_struct *mm, unsigned long addr, pte
        ptep->pte_low = pte.pte_low;
 }
 
-#define set_pte_atomic(pteptr,pteval) \
-               set_64bit((unsigned long long *)(pteptr),pte_val(pteval))
-#define set_pmd(pmdptr,pmdval) \
-               set_64bit((unsigned long long *)(pmdptr),pmd_val(pmdval))
-#define set_pud(pudptr,pudval) \
-               (*(pudptr) = (pudval))
+static inline void native_set_pte_atomic(pte_t *ptep, pte_t pte)
+{
+       set_64bit((unsigned long long *)(ptep),native_pte_val(pte));
+}
+static inline void native_set_pmd(pmd_t *pmdp, pmd_t pmd)
+{
+       set_64bit((unsigned long long *)(pmdp),native_pmd_val(pmd));
+}
+static inline void native_set_pud(pud_t *pudp, pud_t pud)
+{
+       *pudp = pud;
+}
 
 /*
  * For PTEs and PDEs, we must clear the P-bit first when clearing a page table
  * entry, so clear the bottom half first and enforce ordering with a compiler
  * barrier.
  */
-static inline void pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
+static inline void native_pte_clear(struct mm_struct *mm, unsigned long addr, pte_t *ptep)
 {
        ptep->pte_low = 0;
        smp_wmb();
        ptep->pte_high = 0;
 }
 
-static inline void pmd_clear(pmd_t *pmd)
+static inline void native_pmd_clear(pmd_t *pmd)
 {
        u32 *tmp = (u32 *)pmd;
        *tmp = 0;
        smp_wmb();
        *(tmp + 1) = 0;
 }
+
+#ifndef CONFIG_PARAVIRT
+#define set_pte(ptep, pte)                     native_set_pte(ptep, pte)
+#define set_pte_at(mm, addr, ptep, pte)                native_set_pte_at(mm, addr, ptep, pte)
+#define set_pte_present(mm, addr, ptep, pte)   native_set_pte_present(mm, addr, ptep, pte)
+#define set_pte_atomic(ptep, pte)              native_set_pte_atomic(ptep, pte)
+#define set_pmd(pmdp, pmd)                     native_set_pmd(pmdp, pmd)
+#define set_pud(pudp, pud)                     native_set_pud(pudp, pud)
+#define pte_clear(mm, addr, ptep)              native_pte_clear(mm, addr, ptep)
+#define pmd_clear(pmd)                         native_pmd_clear(pmd)
 #endif
 
 /*
@@ -119,7 +139,8 @@ static inline void pud_clear (pud_t * pud) { }
 #define pmd_offset(pud, address) ((pmd_t *) pud_page(*(pud)) + \
                        pmd_index(address))
 
-static inline pte_t raw_ptep_get_and_clear(pte_t *ptep)
+#ifdef CONFIG_SMP
+static inline pte_t native_ptep_get_and_clear(pte_t *ptep)
 {
        pte_t res;
 
@@ -130,6 +151,9 @@ static inline pte_t raw_ptep_get_and_clear(pte_t *ptep)
 
        return res;
 }
+#else
+#define native_ptep_get_and_clear(xp) native_local_ptep_get_and_clear(xp)
+#endif
 
 #define __HAVE_ARCH_PTE_SAME
 static inline int pte_same(pte_t a, pte_t b)
@@ -146,28 +170,21 @@ static inline int pte_none(pte_t pte)
 
 static inline unsigned long pte_pfn(pte_t pte)
 {
-       return (pte.pte_low >> PAGE_SHIFT) |
-               (pte.pte_high << (32 - PAGE_SHIFT));
+       return pte_val(pte) >> PAGE_SHIFT;
 }
 
 extern unsigned long long __supported_pte_mask;
 
 static inline pte_t pfn_pte(unsigned long page_nr, pgprot_t pgprot)
 {
-       pte_t pte;
-
-       pte.pte_high = (page_nr >> (32 - PAGE_SHIFT)) | \
-                                       (pgprot_val(pgprot) >> 32);
-       pte.pte_high &= (__supported_pte_mask >> 32);
-       pte.pte_low = ((page_nr << PAGE_SHIFT) | pgprot_val(pgprot)) & \
-                                                       __supported_pte_mask;
-       return pte;
+       return __pte((((unsigned long long)page_nr << PAGE_SHIFT) |
+                     pgprot_val(pgprot)) & __supported_pte_mask);
 }
 
 static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
 {
-       return __pmd((((unsigned long long)page_nr << PAGE_SHIFT) | \
-                       pgprot_val(pgprot)) & __supported_pte_mask);
+       return __pmd((((unsigned long long)page_nr << PAGE_SHIFT) |
+                     pgprot_val(pgprot)) & __supported_pte_mask);
 }
 
 /*
@@ -187,6 +204,4 @@ static inline pmd_t pfn_pmd(unsigned long page_nr, pgprot_t pgprot)
 
 #define __pmd_free_tlb(tlb, x)         do { } while (0)
 
-#define vmalloc_sync_all() ((void)0)
-
 #endif /* _I386_PGTABLE_3LEVEL_H */