* Adam Williamson <awill...@redhat.com> wrote:
> On Fri, 2013-11-01 at 15:02 +0100, Joerg Roedel wrote:
> > On Sun, Oct 27, 2013 at 12:06:29AM -0700, Adam Williamson wrote:
> > > On Sat, 2013-10-26 at 11:15 +0200, Ingo Molnar wrote:
> > > > CONFIG_IRQ_REMAP=y
> > >
> > > Agh, sorry - I had this down in my mind as a boot time
> > > parameter, not a compile time option. I'm off on vacation for a
> > > week in the morning, and it's too late to wait around for a
> > > kernel compile tonight :/ So I'll have to check this one when I
> > > get back. Sorry again.
> >
> > Note, instead of recompiling the kernel, you can also pass
> > 'intremap=off' on the kernel cmdline to disable interrupt
> > remapping and test with that.
>
> Sorry for the delay, folks - just got back to this. Booting with
> 'intremap=off' results in a slow reboot, i.e., doesn't fix the bug.
> Is that a sufficient test, Ingo, or do you still want me to build
> with CONFIG_IRQ_REMAP=n and try that?
That should be a sufficient boot I suspect.
Can you disable virtualization in the BIOS - does that affect reboot
speed?
I'm just shooting into the dark here - if you can make your system
boot bzImages then you might as well be better off trying to bisect
it.
On Fedora booting bzImages of vanilla kernels is reasonably
straightforward: a 'make localconfig' done while you are booted into a
Fedora kernel ought to pick up everything into your .config and you
won't need any modules to be able to boot up to userspace. That should
ease bisection.
Thanks,
Ingo
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