x86: change cpa to pfn based

change CPA to pfn based.

Signed-off-by: Ingo Molnar <mingo@elte.hu>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>

diff --git a/arch/x86/mm/pageattr.c b/arch/x86/mm/pageattr.c
index effcd78d5f4039761bd3598f197031e2940640a4..d18c41d752f349cfb37463973559833ed1073ab1 100644 (file)
--- a/arch/x86/mm/pageattr.c
+++ b/arch/x86/mm/pageattr.c
@@ -3,6 +3,7 @@
  * Thanks to Ben LaHaise for precious feedback.
  */
 #include <linux/highmem.h>
+#include <linux/bootmem.h>
 #include <linux/module.h>
 #include <linux/sched.h>
 #include <linux/slab.h>
@@ -144,13 +145,15 @@ out_unlock:
 }
 
 static int
-__change_page_attr(unsigned long address, struct page *page, pgprot_t prot)
+__change_page_attr(unsigned long address, unsigned long pfn, pgprot_t prot)
 {
        struct page *kpte_page;
        int level, err = 0;
        pte_t *kpte;
 
-       BUG_ON(PageHighMem(page));
+#ifdef CONFIG_X86_32
+       BUG_ON(pfn > max_low_pfn);
+#endif
 
 repeat:
        kpte = lookup_address(address, &level);
@@ -164,7 +167,7 @@ repeat:
        prot = check_exec(prot, address);
 
        if (level == PG_LEVEL_4K) {
-               set_pte_atomic(kpte, mk_pte(page, canon_pgprot(prot)));
+               set_pte_atomic(kpte, pfn_pte(pfn, canon_pgprot(prot)));
        } else {
                err = split_large_page(kpte, address);
                if (!err)
@@ -203,7 +206,7 @@ int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
                unsigned long pfn = __pa(address) >> PAGE_SHIFT;
 
                if (!kernel_map || pte_present(pfn_pte(0, prot))) {
-                       err = __change_page_attr(address, pfn_to_page(pfn), prot);
+                       err = __change_page_attr(address, pfn, prot);
                        if (err)
                                break;
                }
@@ -219,7 +222,7 @@ int change_page_attr_addr(unsigned long address, int numpages, pgprot_t prot)
                        addr2 = __START_KERNEL_map + __pa(address);
                        /* Make sure the kernel mappings stay executable */
                        prot2 = pte_pgprot(pte_mkexec(pfn_pte(0, prot)));
-                       err = __change_page_attr(addr2, pfn_to_page(pfn), prot2);
+                       err = __change_page_attr(addr2, pfn, prot2);
                }
 #endif
        }