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[PATCH] i386: Use per-cpu variables for GDT, PDA

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Allocating PDA and GDT at boot is a pain.  Using simple per-cpu variables adds
happiness (although we need the GDT page-aligned for Xen, which we do in a
followup patch).

[akpm@linux-foundation.org: build fix]
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>
This commit is contained in:
Rusty Russell
2007-05-02 19:27:10 +02:00
committed by Andi Kleen
parent 8f9aeca7a0
commit ae1ee11be7
7 changed files with 21 additions and 115 deletions
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arch/i386/mach-voyager/voyager_smp.c
+1 -9
View File
@@ -580,15 +580,7 @@ do_boot_cpu(__u8 cpu)
/* init_tasks (in sched.c) is indexed logically */
stack_start.esp = (void *) idle->thread.esp;
/* Pre-allocate and initialize the CPU's GDT and PDA so it
doesn't have to do any memory allocation during the
delicate CPU-bringup phase. */
if (!init_gdt(cpu, idle)) {
printk(KERN_INFO "Couldn't allocate GDT/PDA for CPU %d\n", cpu);
cpucount--;
return;
}
init_gdt(cpu, idle);
irq_ctx_init(cpu);
/* Note: Don't modify initial ss override */