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Re: [Xen-devel] Re: [PATCH] x86: fix the potential of encountering panic "IO-APIC+ timer doesn't work! ..."

  • To: Ingo Molnar <mingo@xxxxxxx>, Jan Beulich <jbeulich@xxxxxxxxxx>
  • From: Keir Fraser <keir.fraser@xxxxxxxxxxxxx>
  • Date: Fri, 12 Dec 2008 10:37:48 +0000
  • Cc: xen-devel@xxxxxxxxxxxxxxxxxxx
  • Delivery-date: Fri, 12 Dec 2008 02:37:59 -0800
  • List-id: Xen developer discussion <xen-devel.lists.xensource.com>
  • Thread-index: AclcRazlbjgSP+cdXUidogpn3kTd+g==
  • Thread-topic: [Xen-devel] Re: [PATCH] x86: fix the potential of encountering panic "IO-APIC+ timer doesn't work! ..."

On 12/12/2008 10:06, "Ingo Molnar" <mingo@xxxxxxx> wrote:

>>> note that we had to revert that eventually. The real solution is an
>>> array of fixes from Maciej spread out over many months.
>> What do you mean by 'eventually'? 2.6.28-rc8 still has this code, and
>> so does -tip.
> argh. Different io-apic breakage. I shouldnt remember patches by their
> subject lines ;-)
> Sorry about the confusion - Jan is right and my fix ported to Xen is good
> ;-)

Ah, no worries. I was concerned we were about to descend into a start-of-day
interrupt breakage nightmare we haven't seen in a long while!

> the point about the other breakages remains: for the best bootup ratio
> you'll want to pick up everything from the (now unified)
> arch/x86/kernel/io_apic.c.

Yes, we haven't done a sync with upstream in quite a while.


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