2011-04-17 15:13:30

by Mikael Pettersson

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Subject: [bug] 2.6.39-rc3 fails to boot on Alpha

2.6.39-rc3 doesn't boot on my Alpha (XP900). As soon as aboot has loaded
and started the kernel I get:

halted CPU 0

halt code = 4
invalid PTBR
PC = fffffc00003130d0

(that PC value points to an "lda" instruction in sys_osf_proplist_syscall)

There's no other output except this, so I don't think the kernel got very far.

Haven't checked 2.6.39-rc[12] or bisected anything yet, but 2.6.38 works fine.

/Mikael


2011-04-17 18:52:10

by Jay Estabrook

[permalink] [raw]
Subject: Re: [bug] 2.6.39-rc3 fails to boot on Alpha

Try replacing the reference to "no_irq_chip" with "dummy_irq_chip"
in arch/alpha/irq_alpha.c: int_rtc_irq().

For me, it was dying in the first RTC interrupt taken.

Jay

On 04/17/2011 11:13 AM, Mikael Pettersson wrote:
> 2.6.39-rc3 doesn't boot on my Alpha (XP900). As soon as aboot has loaded
> and started the kernel I get:
>
> halted CPU 0
>
> halt code = 4
> invalid PTBR
> PC = fffffc00003130d0
>
> (that PC value points to an "lda" instruction in sys_osf_proplist_syscall)
>
> There's no other output except this, so I don't think the kernel got very far.
>
> Haven't checked 2.6.39-rc[12] or bisected anything yet, but 2.6.38 works fine.
>
> /Mikael
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2011-04-17 19:20:55

by Mikael Pettersson

[permalink] [raw]
Subject: Re: [bug] 2.6.39-rc3 fails to boot on Alpha

Jay Estabrook writes:
> Try replacing the reference to "no_irq_chip" with "dummy_irq_chip"
> in arch/alpha/irq_alpha.c: int_rtc_irq().

2.6.39-rc3 booted fine with that change.

Thanks,

/Mikael

>
> For me, it was dying in the first RTC interrupt taken.
>
> Jay
>
> On 04/17/2011 11:13 AM, Mikael Pettersson wrote:
> > 2.6.39-rc3 doesn't boot on my Alpha (XP900). As soon as aboot has loaded
> > and started the kernel I get:
> >
> > halted CPU 0
> >
> > halt code = 4
> > invalid PTBR
> > PC = fffffc00003130d0
> >
> > (that PC value points to an "lda" instruction in sys_osf_proplist_syscall)
> >
> > There's no other output except this, so I don't think the kernel got very far.
> >
> > Haven't checked 2.6.39-rc[12] or bisected anything yet, but 2.6.38 works fine.
> >
> > /Mikael

2011-04-18 04:35:48

by Bob Tracy

[permalink] [raw]
Subject: Re: [bug] 2.6.39-rc3 fails to boot on Alpha

On Sun, Apr 17, 2011 at 05:13:20PM +0200, Mikael Pettersson wrote:
> 2.6.39-rc3 doesn't boot on my Alpha (XP900).
> (...)

At least -rc2 broken also per previous report. Didn't see any replies
to the initial bug report, so it's not surprising a fix didn't make it
into -rc3.

--Bob