Re: [PATCH v5 3/9] x86/head: Move early exception panic code into early_fixup_exception

[Arjan van de Ven]

On 4/4/2016 8:32 AM, Andy Lutomirski wrote:
> Adding locking would be easy enough, wouldn't it?
>
> But do any platforms really boot a second CPU before switching to real
> printk?  Given that I see all the smpboot stuff in dmesg, I guess real
> printk happens first.  I admit I haven't actually checked.

adding locking also makes things more fragile in terms of getting the last thing out
before you go down in flaming death....

until it's a proven problem, this early, get the message out at all is more important
than getting it out perfectly, sometimes.