Merge branch 'rmobile-fixes-for-linus' of git://github.com/pmundt/linux-sh

[pandora-kernel.git] / arch / x86 / platform / efi / efi_32.c

diff --git a/arch/x86/platform/efi/efi_32.c b/arch/x86/platform/efi/efi_32.c
index 5cab48e..40e4469 100644 (file)
--- a/arch/x86/platform/efi/efi_32.c
+++ b/arch/x86/platform/efi/efi_32.c
@@ -25,6 +25,7 @@
 #include <linux/efi.h>
 
 #include <asm/io.h>
+#include <asm/desc.h>
 #include <asm/page.h>
 #include <asm/pgtable.h>
 #include <asm/tlbflush.h>
@@ -38,43 +39,14 @@
  */
 
 static unsigned long efi_rt_eflags;
-static pgd_t efi_bak_pg_dir_pointer[2];
 
 void efi_call_phys_prelog(void)
 {
-       unsigned long cr4;
-       unsigned long temp;
        struct desc_ptr gdt_descr;
 
        local_irq_save(efi_rt_eflags);
 
-       /*
-        * If I don't have PAE, I should just duplicate two entries in page
-        * directory. If I have PAE, I just need to duplicate one entry in
-        * page directory.
-        */
-       cr4 = read_cr4_safe();
-
-       if (cr4 & X86_CR4_PAE) {
-               efi_bak_pg_dir_pointer[0].pgd =
-                   swapper_pg_dir[pgd_index(0)].pgd;
-               swapper_pg_dir[0].pgd =
-                   swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd;
-       } else {
-               efi_bak_pg_dir_pointer[0].pgd =
-                   swapper_pg_dir[pgd_index(0)].pgd;
-               efi_bak_pg_dir_pointer[1].pgd =
-                   swapper_pg_dir[pgd_index(0x400000)].pgd;
-               swapper_pg_dir[pgd_index(0)].pgd =
-                   swapper_pg_dir[pgd_index(PAGE_OFFSET)].pgd;
-               temp = PAGE_OFFSET + 0x400000;
-               swapper_pg_dir[pgd_index(0x400000)].pgd =
-                   swapper_pg_dir[pgd_index(temp)].pgd;
-       }
-
-       /*
-        * After the lock is released, the original page table is restored.
-        */
+       load_cr3(initial_page_table);
        __flush_tlb_all();
 
        gdt_descr.address = __pa(get_cpu_gdt_table(0));
@@ -84,28 +56,13 @@ void efi_call_phys_prelog(void)
 
 void efi_call_phys_epilog(void)
 {
-       unsigned long cr4;
        struct desc_ptr gdt_descr;
 
        gdt_descr.address = (unsigned long)get_cpu_gdt_table(0);
        gdt_descr.size = GDT_SIZE - 1;
        load_gdt(&gdt_descr);
 
-       cr4 = read_cr4_safe();
-
-       if (cr4 & X86_CR4_PAE) {
-               swapper_pg_dir[pgd_index(0)].pgd =
-                   efi_bak_pg_dir_pointer[0].pgd;
-       } else {
-               swapper_pg_dir[pgd_index(0)].pgd =
-                   efi_bak_pg_dir_pointer[0].pgd;
-               swapper_pg_dir[pgd_index(0x400000)].pgd =
-                   efi_bak_pg_dir_pointer[1].pgd;
-       }
-
-       /*
-        * After the lock is released, the original page table is restored.
-        */
+       load_cr3(swapper_pg_dir);
        __flush_tlb_all();
 
        local_irq_restore(efi_rt_eflags);