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Subject[PATCH 1/1] EFI: Fix gdt load
This patch makes the kernel bootable again on ia32 EFI systems.

Signed-off-by: Edgar Hucek <hostmaster@ed-soft.at>
diff -uNr linux-2.6.16-rc5/arch/i386/kernel/efi.c linux-2.6.16-rc5.efi/arch/i386/kernel/efi.c
--- linux-2.6.16-rc5/arch/i386/kernel/efi.c 2006-03-02 14:08:06.000000000 +0100
+++ linux-2.6.16-rc5.efi/arch/i386/kernel/efi.c 2006-03-02 14:04:44.000000000 +0100
@@ -70,7 +70,8 @@
{
unsigned long cr4;
unsigned long temp;
-
+ struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0);
+
spin_lock(&efi_rt_lock);
local_irq_save(efi_rt_eflags);

@@ -103,18 +104,17 @@
*/
local_flush_tlb();

- per_cpu(cpu_gdt_descr, 0).address =
- __pa(per_cpu(cpu_gdt_descr, 0).address);
- load_gdt((struct Xgt_desc_struct *)__pa(&per_cpu(cpu_gdt_descr, 0)));
+ cpu_gdt_descr->address = __pa(cpu_gdt_descr->address);
+ load_gdt(cpu_gdt_descr);
}

static void efi_call_phys_epilog(void)
{
unsigned long cr4;
+ struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0);

- per_cpu(cpu_gdt_descr, 0).address =
- (unsigned long)__va(per_cpu(cpu_gdt_descr, 0).address);
- load_gdt((struct Xgt_desc_struct *)__va(&per_cpu(cpu_gdt_descr, 0)));
+ cpu_gdt_descr->address = __va(cpu_gdt_descr->address);
+ load_gdt(cpu_gdt_descr);

cr4 = read_cr4();
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