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Date: Mon, 12 Sep 2016 12:39:05 +0300
From: Slawa Olhovchenkov <slw@zxy.spb.ru>
To: Andriy Gapon <avg@FreeBSD.org>
Cc: Konstantin Belousov <kostikbel@gmail.com>, stable@FreeBSD.org
Subject: Re: X2APIC support
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On Sun, Sep 04, 2016 at 08:14:07PM +0300, Andriy Gapon wrote:

> On 04/09/2016 19:29, Konstantin Belousov wrote:
> > This is possible, of course.  But it would not affect "SMP: Added CPU ..."
> > lines.
> 
> Well, looking at the code it seems that only if mptable is used, then those
> lines are expected to correctly identify a BSP.  With MADT there is no
> information to identify the BSP and that is supposed to happen in cpu_mp_start().
> 
> 
> static void
> madt_add_cpu(u_int acpi_id, u_int apic_id, u_int flags)
> {
>         struct lapic_info *la;
> 
>         /*
>          * The MADT does not include a BSP flag, so we have to let the
>          * MP code figure out which CPU is the BSP on its own.
>          */
> ...
> 
> In other words, those "SMP: Added CPU ..." are truly a cosmetic issue.
> And it's my guess (just a guess) that BSP LAPIC ID is incorrect in the
> problematic configuration.

For next day or two I am have new server with same hardware before put
in prodution.
Can I do some test for you?