On Sat, Nov 26, 2016 at 12:21:24PM +0300, Slawa Olhovchenkov wrote:
> I am try to enable NUMA in bios and can't boot FreeBSD.
> Boot stoped after next messages:
> ===
> Booting...
> KDB: debugger backends: ddb
> KDB: current backend: ddb
So at least the hammer_time() has a chance to initialize the console.
Do you have serial console ?  Set the loader tunable debug.late_console
to 1 and see if any NMI reaction appear.

> ===
> This is verbose boot.
> No reaction to ~^B, NMI.
> Same for head and 10.3-RELEASE.
> Hardware is Supermicro X10DRi, Dual E5-2650v4, 256GB RAM.
Is there a BIOS option for 'on-chip cluster' or 'HPC computing' ?
What if you try to frob it ?

> On slight different hardware
> (Supermicro X10DRi w/ old BIOS, Dual E5-2640v3, 128GB RAM)
> 10.3 boot ok w/ BIOS NUMA enabled.

I think the only way to debug this is to add printf() lines to hammer_time()
to see where does it break.  Note that amd64_kdb_init() call succeeded,
so you can start bisect the code from there.

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