提交 fa47f7e5 编写于 作者: S Suresh Siddha 提交者: H. Peter Anvin

x86, x2apic: Simplify apic init in SMP and UP builds

Move enable_IR_x2apic() inside the default_setup_apic_routing(),
and for SMP platforms, move the default_setup_apic_routing() after
smp_sanity_check(). This cleans up the code that tries to avoid multiple
calls to default_setup_apic_routing() when smp_sanity_check() fails (which
goes through the APIC_init_uniprocessor() path).
Signed-off-by: NSuresh Siddha <suresh.b.siddha@intel.com>
LKML-Reference: <20100827181049.173087246@sbsiddha-MOBL3.sc.intel.com>
Signed-off-by: NH. Peter Anvin <hpa@linux.intel.com>
上级 62a92f4c
......@@ -1665,10 +1665,7 @@ int __init APIC_init_uniprocessor(void)
}
#endif
#ifndef CONFIG_SMP
enable_IR_x2apic();
default_setup_apic_routing();
#endif
verify_local_APIC();
connect_bsp_APIC();
......
......@@ -54,6 +54,9 @@ static int apicid_phys_pkg_id(int initial_apic_id, int index_msb)
*/
void __init default_setup_apic_routing(void)
{
enable_IR_x2apic();
#ifdef CONFIG_X86_X2APIC
if (x2apic_mode
#ifdef CONFIG_X86_UV
......
......@@ -1109,8 +1109,6 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
}
set_cpu_sibling_map(0);
enable_IR_x2apic();
default_setup_apic_routing();
if (smp_sanity_check(max_cpus) < 0) {
printk(KERN_INFO "SMP disabled\n");
......@@ -1118,6 +1116,8 @@ void __init native_smp_prepare_cpus(unsigned int max_cpus)
goto out;
}
default_setup_apic_routing();
preempt_disable();
if (read_apic_id() != boot_cpu_physical_apicid) {
panic("Boot APIC ID in local APIC unexpected (%d vs %d)",
......
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