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author | Rusty Russell <rusty@rustcorp.com.au> | 2007-05-02 19:27:11 +0200 |
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committer | Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:11 +0200 |
commit | 4fbb5968810b237e81977f131986b9efd5245368 (patch) | |
tree | e2d67eee96c143da26ccad791b3e1f23c3bcbe03 /arch/i386/kernel/efi.c | |
parent | 141f9cfe0a948c8fe26e5669364ee62c03ea42e8 (diff) | |
download | kernel_samsung_espresso10-4fbb5968810b237e81977f131986b9efd5245368.zip kernel_samsung_espresso10-4fbb5968810b237e81977f131986b9efd5245368.tar.gz kernel_samsung_espresso10-4fbb5968810b237e81977f131986b9efd5245368.tar.bz2 |
[PATCH] i386: cleanup GDT Access
Now we have an explicit per-cpu GDT variable, we don't need to keep the
descriptors around to use them to find the GDT: expose cpu_gdt directly.
We could go further and make load_gdt() pack the descriptor for us, or even
assume it means "load the current cpu's GDT" which is what it always does.
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
Signed-off-by: Andi Kleen <ak@suse.de>
Cc: Andi Kleen <ak@suse.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
Diffstat (limited to 'arch/i386/kernel/efi.c')
-rw-r--r-- | arch/i386/kernel/efi.c | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/arch/i386/kernel/efi.c b/arch/i386/kernel/efi.c index 8f9c624..dd9e7fa 100644 --- a/arch/i386/kernel/efi.c +++ b/arch/i386/kernel/efi.c @@ -69,13 +69,11 @@ static void efi_call_phys_prelog(void) __acquires(efi_rt_lock) { unsigned long cr4; unsigned long temp; - struct Xgt_desc_struct *cpu_gdt_descr; + struct Xgt_desc_struct gdt_descr; spin_lock(&efi_rt_lock); local_irq_save(efi_rt_eflags); - cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0); - /* * If I don't have PSE, I should just duplicate two entries in page * directory. If I have PSE, I just need to duplicate one entry in @@ -105,17 +103,19 @@ static void efi_call_phys_prelog(void) __acquires(efi_rt_lock) */ local_flush_tlb(); - cpu_gdt_descr->address = __pa(cpu_gdt_descr->address); - load_gdt(cpu_gdt_descr); + gdt_descr.address = __pa(get_cpu_gdt_table(0)); + gdt_descr.size = GDT_SIZE - 1; + load_gdt(&gdt_descr); } static void efi_call_phys_epilog(void) __releases(efi_rt_lock) { unsigned long cr4; - struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, 0); + struct Xgt_desc_struct gdt_descr; - cpu_gdt_descr->address = (unsigned long)__va(cpu_gdt_descr->address); - load_gdt(cpu_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(); |