Re: 2.6.22-rc3 nmi watchdog hang

Björn Steinbrink
2007-06-18T14:31:36Z

On 2007.06.18 14:11:22 +0200, Ingo Molnar wrote:
>
> * Björn Steinbrink <B.Steinbrink@gmx.de> wrote:
>
> > > [PATCH] i386: Clean up NMI watchdog code
> > >
> > > Andi - just boot with nmi_watchdog=2 on a dual-core Athlon64 CPU.
> >
> > I still fail to reproduce this, could you send me your config?
>
> attached below. nmi_watchdog=2 still hangs as of -rc5, using the 32-bit
> kernel (at various places during bootup - a typical place is somewhere
> after cfq_init()). Changing it to nmi_watchdog=0 makes the kernel boot
> again.

Still no hang here. Just to make sure that I didn't mess the test up,
here's what I did:

Get pristine 2.6.22-rc5 kernel sources.
Put your config in place as .config
Run: make ARCH=i386 CFLAGS_KERNEL="-m32" AFLAGS_KERNEL="-m32"
Install the kernel.
Reboot, pass "nmi_watchdog=2" as kernel parameter.

As your config is for a 64bit kernel, several config items had to be set
manually. In one run, I accepted the default values, in the second run,
I tried to adjust those items to match your 64bit config as good as I
could.

Anything wrong with that?

Björn