x86: implement set_pte_vaddr

Signed-off-by: Jeremy Fitzhardinge <jeremy@xensource.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

diff --git a/arch/x86/mm/init_64.c b/arch/x86/mm/init_64.c
index e5f5319..74fae83 100644 (file)
--- a/arch/x86/mm/init_64.c
+++ b/arch/x86/mm/init_64.c
@@ -135,15 +135,15 @@ static __init void *spp_getpage(void)
        return ptr;
 }
 
-static void
-set_pte_phys(unsigned long vaddr, unsigned long phys, pgprot_t prot)
+void
+set_pte_vaddr(unsigned long vaddr, pte_t new_pte)
 {
        pgd_t *pgd;
        pud_t *pud;
        pmd_t *pmd;
-       pte_t *pte, new_pte;
+       pte_t *pte;
 
-       pr_debug("set_pte_phys %lx to %lx\n", vaddr, phys);
+       pr_debug("set_pte_vaddr %lx to %lx\n", vaddr, native_pte_val(new_pte));
 
        pgd = pgd_offset_k(vaddr);
        if (pgd_none(*pgd)) {
@@ -170,7 +170,6 @@ set_pte_phys(unsigned long vaddr, unsigned long phys, pgprot_t prot)
                        return;
                }
        }
-       new_pte = pfn_pte(phys >> PAGE_SHIFT, prot);
 
        pte = pte_offset_kernel(pmd, vaddr);
        if (!pte_none(*pte) && pte_val(new_pte) &&

diff --git a/arch/x86/mm/pgtable.c b/arch/x86/mm/pgtable.c
index 3ebebe4..7498124 100644 (file)
--- a/arch/x86/mm/pgtable.c
+++ b/arch/x86/mm/pgtable.c
@@ -285,6 +285,6 @@ void __set_fixmap (enum fixed_addresses idx, unsigned long phys, pgprot_t flags)
                BUG();
                return;
        }
-       set_pte_pfn(address, phys >> PAGE_SHIFT, flags);
+       set_pte_vaddr(address, pfn_pte(phys >> PAGE_SHIFT, flags));
        fixmaps_set++;
 }

diff --git a/arch/x86/mm/pgtable_32.c b/arch/x86/mm/pgtable_32.c
index 3f97c3c..0662f34 100644 (file)
--- a/arch/x86/mm/pgtable_32.c
+++ b/arch/x86/mm/pgtable_32.c
@@ -71,7 +71,7 @@ void show_mem(void)
  * Associate a virtual page frame with a given physical page frame 
  * and protection flags for that frame.
  */ 
-static void set_pte_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
+void set_pte_vaddr(unsigned long vaddr, pte_t pteval)
 {
        pgd_t *pgd;
        pud_t *pud;
@@ -94,8 +94,8 @@ static void set_pte_pfn(unsigned long vaddr, unsigned long pfn, pgprot_t flags)
                return;
        }
        pte = pte_offset_kernel(pmd, vaddr);
-       if (pgprot_val(flags))
-               set_pte_present(&init_mm, vaddr, pte, pfn_pte(pfn, flags));
+       if (pte_val(pteval))
+               set_pte_present(&init_mm, vaddr, pte, pteval);
        else
                pte_clear(&init_mm, vaddr, pte);
 

diff --git a/include/asm-x86/pgtable.h b/include/asm-x86/pgtable.h
index 97c271b..702f269 100644 (file)
--- a/include/asm-x86/pgtable.h
+++ b/include/asm-x86/pgtable.h
@@ -318,6 +318,9 @@ int phys_mem_access_prot_allowed(struct file *file, unsigned long pfn,
                               unsigned long size, pgprot_t *vma_prot);
 #endif
 
+/* Install a pte for a particular vaddr in kernel space. */
+void set_pte_vaddr(unsigned long vaddr, pte_t pte);
+
 #ifdef CONFIG_PARAVIRT
 #include <asm/paravirt.h>
 #else  /* !CONFIG_PARAVIRT */