Re: [tip:x86/urgent] x86, apic: Fix apic=debug boot crash

Daniel Kiper
2010-08-23T08:12:38Z

Hi,

On Fri, Aug 20, 2010 at 12:24:20PM -0700, Yinghai Lu wrote:
> On Fri, Aug 20, 2010 at 5:41 AM, tip-bot for Daniel Kiper
> <dkiper@net-space.pl> wrote:
> > Commit-ID: ?05e407603e527f9d808dd3866d3a17c2ce4dfcc5
> > Gitweb: ? ? http://git.kernel.org/tip/05e407603e527f9d808dd3866d3a17c2ce4dfcc5
> > Author: ? ? Daniel Kiper <dkiper@net-space.pl>
> > AuthorDate: Fri, 20 Aug 2010 00:46:16 +0200
> > Committer: ?Ingo Molnar <mingo@elte.hu>
> > CommitDate: Fri, 20 Aug 2010 10:18:28 +0200
> >
> > x86, apic: Fix apic=debug boot crash
> >
> > Fix a boot crash when apic=debug is used and the APIC is
> > not properly initialized.
> >
> > This issue appears during Xen Dom0 kernel boot but the
> > fix is generic and the crash could occur on real hardware
> > as well.
>
> Do you have any report on real hardware?
> that could not happen on real hardware.

Till now no, however I think it is good idea
to apply this patch now. It is not worth to wait
for another null pointer dereference.

Daniel