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authorGlauber de Oliveira Costa <gcosta@redhat.com>2008-03-19 18:25:15 +0100
committerIngo Molnar <mingo@elte.hu>2008-04-17 17:41:00 +0200
commitf915d7f46b84192a19647c8e6b111a7e518875cb (patch)
tree2f45f895e62233677aadc0ae9abbfc162eeaf0fc /arch/x86/kernel/smpboot_32.c
parentx86: isolate logic to disable smp (diff)
downloadlinux-f915d7f46b84192a19647c8e6b111a7e518875cb.tar.xz
linux-f915d7f46b84192a19647c8e6b111a7e518875cb.zip
x86: do tests before do_boot_cpu in i386
Do tests before do_boot_cpu in native_cpu_up for i386. Tests are a little bit broader than originally, and are the same as x86_64. Test for smp_callin is not applicable right now and is deferred. Signed-off-by: Glauber Costa <gcosta@redhat.com> Signed-off-by: Ingo Molnar <mingo@elte.hu>
Diffstat (limited to 'arch/x86/kernel/smpboot_32.c')
-rw-r--r--arch/x86/kernel/smpboot_32.c18
1 files changed, 13 insertions, 5 deletions
diff --git a/arch/x86/kernel/smpboot_32.c b/arch/x86/kernel/smpboot_32.c
index 8144aa3a1edf..147af81f70ea 100644
--- a/arch/x86/kernel/smpboot_32.c
+++ b/arch/x86/kernel/smpboot_32.c
@@ -711,10 +711,6 @@ static int __cpuinit __smp_prepare_cpu(int cpu)
int apicid, ret;
apicid = per_cpu(x86_cpu_to_apicid, cpu);
- if (apicid == BAD_APICID) {
- ret = -ENODEV;
- goto exit;
- }
info.complete = &done;
info.apicid = apicid;
@@ -952,10 +948,22 @@ void __init native_smp_prepare_boot_cpu(void)
int __cpuinit native_cpu_up(unsigned int cpu)
{
+ int apicid = cpu_present_to_apicid(cpu);
unsigned long flags;
-#ifdef CONFIG_HOTPLUG_CPU
int ret = 0;
+ WARN_ON(irqs_disabled());
+
+ Dprintk("++++++++++++++++++++=_---CPU UP %u\n", cpu);
+
+ if (apicid == BAD_APICID || apicid == boot_cpu_physical_apicid ||
+ !physid_isset(apicid, phys_cpu_present_map)) {
+ printk(KERN_ERR "%s: bad cpu %d\n", __func__, cpu);
+ return -EINVAL;
+ }
+
+#ifdef CONFIG_HOTPLUG_CPU
+
/*
* We do warm boot only on cpus that had booted earlier
* Otherwise cold boot is all handled from smp_boot_cpus().