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| author |   Rusty Russell <rusty@rustcorp.com.au> | 2007-05-02 19:27:11 +0200 |
|---|---|---|
| committer |   Andi Kleen <andi@basil.nowhere.org> | 2007-05-02 19:27:11 +0200 |
| commit | 4fbb5968810b237e81977f131986b9efd5245368 (patch) | |
| tree | e2d67eee96c143da26ccad791b3e1f23c3bcbe03 /arch/i386/kernel/traps.c | |
| parent | [PATCH] x86-64: Fix "Section mismatch" compile warning (diff) | |
| download | linux-dev-4fbb5968810b237e81977f131986b9efd5245368.tar.xz linux-dev-4fbb5968810b237e81977f131986b9efd5245368.zip | |
[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 '')
| -rw-r--r-- | arch/i386/kernel/traps.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/arch/i386/kernel/traps.c b/arch/i386/kernel/traps.c index 58dfecc8e36c..8722444cacaa 100644 --- a/arch/i386/kernel/traps.c +++ b/arch/i386/kernel/traps.c @@ -1030,9 +1030,7 @@ fastcall void do_spurious_interrupt_bug(struct pt_regs * regs, fastcall unsigned long patch_espfix_desc(unsigned long uesp, unsigned long kesp) { - int cpu = smp_processor_id(); - struct Xgt_desc_struct *cpu_gdt_descr = &per_cpu(cpu_gdt_descr, cpu); - struct desc_struct *gdt = (struct desc_struct *)cpu_gdt_descr->address; + struct desc_struct *gdt = __get_cpu_var(cpu_gdt); unsigned long base = (kesp - uesp) & -THREAD_SIZE; unsigned long new_kesp = kesp - base; unsigned long lim_pages = (new_kesp | (THREAD_SIZE - 1)) >> PAGE_SHIFT; |