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xen-devel
[Xen-devel] Re: [bisected] 2.6.31 regression: fails to boot as xen guest
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To: |
Arnd Hannemann <hannemann@xxxxxxxxxxxxxxxxxxx> |
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Subject: |
[Xen-devel] Re: [bisected] 2.6.31 regression: fails to boot as xen guest |
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From: |
Ingo Molnar <mingo@xxxxxxx> |
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Date: |
Tue, 25 Aug 2009 20:25:10 +0200 |
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Cc: |
Jeremy Fitzhardinge <jeremy@xxxxxxxx>, "xen-devel@xxxxxxxxxxxxxxxxxxx" <xen-devel@xxxxxxxxxxxxxxxxxxx>, Benjamin Herrenschmidt <benh@xxxxxxxxxxxxxxxxxxx>, LKML <linux-kernel@xxxxxxxxxxxxxxx>, Pekka Enberg <penberg@xxxxxxxxxxxxxx>, "hannes@xxxxxxxxxxx" <hannes@xxxxxxxxxxx>, Arnd Hannemann <Arnd.Hannemann@xxxxxxxxxxxxxxxxxxx>, "torvalds@xxxxxxxxxxxxxxxxxxxx" <torvalds@xxxxxxxxxxxxxxxxxxxx> |
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Tue, 25 Aug 2009 11:25:47 -0700 |
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<4A9407B1.6020400@xxxxxxxxxxxxxxxxxxx> <84144f020908250929t7d4a74f1n4827de04e5c4c56a@xxxxxxxxxxxxxx> <4A94161A.2020609@xxxxxxxxxxxxxxxxxxx> <1251219129.4852.1.camel@penberg-laptop> <4A94242E.30309@xxxxxxxxxxxxxxxxxxx> <1251223399.13451.5.camel@penberg-laptop> <4A942BDD.70303@xxxxxxxxxxxxxxxxxxx> |
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* Arnd Hannemann <hannemann@xxxxxxxxxxxxxxxxxxx> wrote:
> Pekka Enberg wrote:
> > On Tue, 2009-08-25 at 19:49 +0200, Arnd Hannemann wrote:
> >> Hi Pekka,
> >>
> >> Pekka Enberg wrote:
> >>> On Tue, 2009-08-25 at 18:49 +0200, Arnd Hannemann wrote:
> >>>>> Thanks for doing the bisect! Can we also see your .config
> >>>>> also?
> >>>> Config for -rc7 is attached. My bisect configs were based on
> >>>> that
> >>> Thanks! While we wait for the Xen people, you can try the
> >>> following patch to see if we can narrow the bug down to
> >>> trap_init().
> >> Yes seems to be trap_init(). -rc7 with this patch applied boots up
> >> to the prompt.
> >
> > Thanks for testing! Ingo, what do you think of the following patch?
> > AFAICT, x86-32 is the only architecture playing with traps in
> > mem_init() so this should be the safest fix for 2.6.31.
>
> Hmm, -rc7 + this fix does not work for me :-/
> Still hangs before any output...
does earlyprintk=vga tell you anything about precisely where it
hangs?
Ingo
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