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x86: change x86_64 native_smp_prepare_cpus to match i386

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An APIC test is moved, and code is replaced by the mach-default
already defined function (smpboot_setup_io_apic).
setup_portio_remap() is added, but it is a nop in mach-default.

Signed-off-by: Glauber Costa <gcosta@redhat.com>
Signed-off-by: Ingo Molnar <mingo@elte.hu>
This commit is contained in:
Glauber de Oliveira Costa 2008-03-19 14:26:07 -03:00 committed by Ingo Molnar
parent 3fa7b3487a
commit 1db17f5534
1 changed files with 10 additions and 14 deletions
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24
arch/x86/kernel/smpboot_64.c
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@ -71,6 +71,7 @@ int smp_threads_ready;
cycles_t cacheflush_time;
unsigned long cache_decay_ticks;
static int boot_cpu_logical_apicid;
/*
* Fall back to non SMP mode after errors.
*
@ -167,7 +168,11 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
{
nmi_watchdog_default();
smp_cpu_index_default();
cpu_callin_map = cpumask_of_cpu(0);
mb();
current_cpu_data = boot_cpu_data;
boot_cpu_logical_apicid = logical_smp_processor_id();
current_thread_info()->cpu = 0; /* needed? */
set_cpu_sibling_map(0);
@ -177,6 +182,11 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
return;
}
if (GET_APIC_ID(apic_read(APIC_ID)) != boot_cpu_physical_apicid) {
panic("Boot APIC ID in local APIC unexpected (%d vs %d)",
GET_APIC_ID(apic_read(APIC_ID)), boot_cpu_physical_apicid);
/* Or can we switch back to PIC here? */
}
/*
* Switch from PIC to APIC mode.
@ -190,20 +200,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
enable_IO_APIC();
end_local_APIC_setup();
if (GET_APIC_ID(apic_read(APIC_ID)) != boot_cpu_physical_apicid) {
panic("Boot APIC ID in local APIC unexpected (%d vs %d)",
GET_APIC_ID(apic_read(APIC_ID)), boot_cpu_physical_apicid);
/* Or can we switch back to PIC here? */
}
/*
* Now start the IO-APICs
*/
if (!skip_ioapic_setup && nr_ioapics)
setup_IO_APIC();
else
nr_ioapics = 0;
/*
* Set up local APIC timer on boot CPU.
*/