Re: [PATCH] x86/smpboot: Remove 486-isms from the modern AP boot path

[Thomas Gleixner]

hpa@xxxxxxxxx writes:
> On March 25, 2020 3:14:31 AM PDT, Andrew Cooper <andrew.cooper3@xxxxxxxxxx> wrote:
>>@@ -1118,7 +1121,7 @@ static int do_boot_cpu(int apicid, int cpu,
>>struct task_struct *idle,
>> 		}
>> 	}
>> 
>>-	if (x86_platform.legacy.warm_reset) {
>>+	if (!APIC_INTEGRATED(boot_cpu_apic_version)) {
>> 		/*
>> 		 * Cleanup possible dangling ends...
>> 		 */
>
> We don't support SMP on 486 and haven't for a very long time. Is there
> any reason to retain that code at all?

Not that I'm aware off.

Thanks,

        tglx