kexec trouble with gcc-4.3

kexec trouble with gcc-4.3

[Geoff Levand]

Hi,

I tried building kexec with gcc-4.3 from the cell sdk-3.1
and the resulting binary didn't work correctly.  It works
OK with the gcc-4.1 from the same (sdk-3.1).

Here is the last thing seen, then the system hangs:

Starting new kernel
kexec: waiting for cpu 1 (physical 1) to go down
Invalid tag 26 scanning flattened device tree !
Invalid tag 26 scanning flattened device tree !
Invalid tag 26 scanning flattened device tree !

Does anyone have any ideas?

-Geoff


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Re: [Cbe-oss-dev] kexec trouble with gcc-4.3

[Michael Ellerman]

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On Thu, 2009-04-02 at 11:40 -0700, Geoff Levand wrote:
> Hi,
> 
> I tried building kexec with gcc-4.3 from the cell sdk-3.1
> and the resulting binary didn't work correctly.  It works
> OK with the gcc-4.1 from the same (sdk-3.1).

You mean building kexec-tools? Or building the kernel?

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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Re: [Cbe-oss-dev] kexec trouble with gcc-4.3

[Geoff Levand]

On 04/02/2009 05:04 PM, Michael Ellerman wrote:
> On Thu, 2009-04-02 at 11:40 -0700, Geoff Levand wrote:
>> Hi,
>> 
>> I tried building kexec with gcc-4.3 from the cell sdk-3.1
>> and the resulting binary didn't work correctly.  It works
>> OK with the gcc-4.1 from the same (sdk-3.1).
> 
> You mean building kexec-tools? Or building the kernel?

The kexec program in kexec-tools.


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Re: [Cbe-oss-dev] kexec trouble with gcc-4.3

[Michael Ellerman]

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On Thu, 2009-04-02 at 19:08 -0700, Geoff Levand wrote:
> On 04/02/2009 05:04 PM, Michael Ellerman wrote:
> > On Thu, 2009-04-02 at 11:40 -0700, Geoff Levand wrote:
> >> Hi,
> >> 
> >> I tried building kexec with gcc-4.3 from the cell sdk-3.1
> >> and the resulting binary didn't work correctly.  It works
> >> OK with the gcc-4.1 from the same (sdk-3.1).
> > 
> > You mean building kexec-tools? Or building the kernel?
> 
> The kexec program in kexec-tools.

Right. In that case I'd guess there's a bug in the kexec-tools DT
creation code, that's being exposed by the new gcc.

If you compare the DT from a working and non-working version it
shouldn't be too hard to track down.

cheers

-- 
Michael Ellerman
OzLabs, IBM Australia Development Lab

wwweb: http://michael.ellerman.id.au
phone: +61 2 6212 1183 (tie line 70 21183)

We do not inherit the earth from our ancestors,
we borrow it from our children. - S.M.A.R.T Person

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Re: kexec trouble with gcc-4.3

[Geoff Levand]

On 04/02/2009 11:40 AM, Geoff Levand wrote:
> Hi,
> 
> I tried building kexec with gcc-4.3 from the cell sdk-3.1
> and the resulting binary didn't work correctly.  It works
> OK with the gcc-4.1 from the same (sdk-3.1).
> 
> Here is the last thing seen, then the system hangs:
> 
> Starting new kernel
> kexec: waiting for cpu 1 (physical 1) to go down
> Invalid tag 26 scanning flattened device tree !
> Invalid tag 26 scanning flattened device tree !
> Invalid tag 26 scanning flattened device tree !
> 
> Does anyone have any ideas?

I finally got around to investigating this, and now
I can't reproduce it.  I tried with 2.6.29 and the
current mainline kernel.  I can only guess it was
something about the kernel at the time.  

-Geoff


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