Re: Enabling NUMA in BIOS stop booting FreeBSD

On Tue, Dec 13, 2016 at 01:23:40PM +0200, Konstantin Belousov wrote:

> On Tue, Dec 13, 2016 at 02:14:37PM +0300, Slawa Olhovchenkov wrote:
> > On Tue, Dec 13, 2016 at 01:05:35PM +0200, Konstantin Belousov wrote:
> > 
> > > On Tue, Dec 13, 2016 at 02:37:14AM +0300, Slawa Olhovchenkov wrote:
> > > > On Mon, Dec 12, 2016 at 04:20:33PM -0600, A. Wilcox wrote:
> > > > 
> > > > > >>>> Try the debugging patch below, which unconditionally disables import of
> > > > > >>>> previous buffer.  To test, you would need to boot, then frob options in
> > > > > >>>> BIOS, reboot, again frob etc.
> > > > > >>>
> > > > > >>> still need test patch? if yes, with BIOS options?
> > > > > >> Yes, please test the patch.  I explained the procedure above.
> > > > > > 
> > > > > > sorry, i don't know 'frob'.
> > > > > > what exactly options combination I need test and what about memory test?
> > > > > > 
> > > > > 
> > > > > 
> > > > > The idea is that when rebooting, stale memory contents remain, but are
> > > > > corrupted due to interleave.
> > > > > 
> > > > > "Frob" basically means "mess with".  So apply patch, test kernel,
> > > > > reboot, change NUMA option, reboot again, see if it works, and so on.
> > > > > Basically repeat your test with the NUMA=on interleave=on, NUMA=off
> > > > > interleave=on, etc etc.
> > > > 
> > > > NUMA=on interleave=off booted
> > > > NUMA=on interleave=on hang
> > > > 
> > > > I think different combination whatever?
> > > 
> > > Do you mean, that both patched kernel, and unpatched kernel with the
> > > memory test enabled, hang when NUMA and interleave options enabled ?
> > 
> > Unpatched kernel boot with the memory test enabled when NUMA and
> > interleave options enabled -- I am already reported this.
> > 
> > patched kernel  with the memory test enabled boot too.
^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
> > i.e. memory test enabled allow boot in any situation.
> Then what about was the statement above ?

About unpatched kernel
https://lists.freebsd.org/pipermail/freebsd-current/2016-December/064069.html
patched and test I am test now, and wrote in previos mail ^^^

> You said that NUMA and interleave
> on caused hang.  Was that on the patched kernel ?

patched w/o memory test

> > 
> > > Could you enable the options, power down the machine for 10-20 minutes,
> > > and try to boot ?
> > 
> > For with kernel and bios options and boot options?
> > I am have two day befor server put in production for any expirements,
> > but please, be more clear in what combination need to test.
> 
> Boot with NUMA enabled and interleave off.

Already with patched kernel

> Patch kernel with the 'if (1 || ...)' patch.
> Reboot, enter BIOS setup and enable interleave there.
> Try to boot - does it boot ?

No.

> If it did not booted, power machine off for 10 minutes.

OK

> Power it on, try to boot (with the same patched kernel).
> Does the machine boot now ?

Don't boot.