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x86/smpboot: Make error message actually useful

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"smpboot: native_kick_ap: bad cpu 33" is absolutely useless information.

Replace it with something meaningful which allows to decode the failure
condition.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Tested-by: Michael Kelley <mhklinux@outlook.com>
Tested-by: Sohil Mehta <sohil.mehta@intel.com>
Link: https://lore.kernel.org/r/20240213210252.170806023@linutronix.de
This commit is contained in:
Thomas Gleixner 2024-02-13 22:05:50 +01:00
parent 72530464ed
commit 6055f6cf0d
1 changed files with 7 additions and 3 deletions
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10
arch/x86/kernel/smpboot.c
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@ -1072,9 +1072,13 @@ int native_kick_ap(unsigned int cpu, struct task_struct *tidle)
pr_debug("++++++++++++++++++++=_---CPU UP %u\n", cpu);
if (apicid == BAD_APICID || !test_bit(apicid, phys_cpu_present_map) ||
!apic_id_valid(apicid)) {
pr_err("%s: bad cpu %d\n", __func__, cpu);
if (apicid == BAD_APICID || !apic_id_valid(apicid)) {
pr_err("CPU %u has invalid APIC ID %x. Aborting bringup\n", cpu, apicid);
return -EINVAL;
}
if (!test_bit(apicid, phys_cpu_present_map)) {
pr_err("CPU %u APIC ID %x is not present. Aborting bringup\n", cpu, apicid);
return -EINVAL;
}