Commit 7f6cbc90 authored Jun 04, 2008 by Glauber Costa Committed by Ingo Molnar Jul 08, 2008

x86: take load_sp0 out of smpboot.c



there's no particular reason to do load_sp0 in different
places for i386 and x86_64. They should all be in cpu_init.
Right now, cpu_init itself is not integrated, but with this patch,
the code becomes closer to each other, making in easier to integrate
when the time comes.

Furthermore, although doing it in do_boot_cpu for x86_64 is fine, since it's
only a copy, load_sp0 should be executed in the cpu it refers to anyway.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>

parent 1481a3dd

arch/x86/kernel/setup64.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -247,6 +247,7 @@ void __cpuinit cpu_init (void)
		BUG();
		enter_lazy_tlb(&init_mm, me);

		load_sp0(t, &current->thread);
		set_tss_desc(cpu, t);
		load_TR_desc();
		load_LDT(&init_mm.context);

arch/x86/kernel/smpboot.c

+0 −1

Original line number	Diff line number	Diff line
		@@ -864,7 +864,6 @@ static int __cpuinit do_boot_cpu(int apicid, int cpu)
		irq_ctx_init(cpu);
		#else
		cpu_pda(cpu)->pcurrent = c_idle.idle;
		load_sp0(&per_cpu(init_tss, cpu), &c_idle.idle->thread);
		clear_tsk_thread_flag(c_idle.idle, TIF_FORK);
		#endif
		early_gdt_descr.address = (unsigned long)get_cpu_gdt_table(cpu);