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Re: [Xen-devel] Re: domU: 32-bit emulation seems to be broken

To: Jeremy Fitzhardinge <jeremy@xxxxxxxx>
Subject: Re: [Xen-devel] Re: domU: 32-bit emulation seems to be broken
From: Sven Köhler <sven.koehler@xxxxxxxxx>
Date: Sun, 15 Mar 2009 12:39:34 +0100
Cc: xen-devel@xxxxxxxxxxxxxxxxxxx, xen-users@xxxxxxxxxxxxxxxxxxx
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Jeremy Fitzhardinge schrieb:
> Has it ever worked?  If so, what kernel version did it stop working at? 
> Does it fail with all 32-bit executables or just your "hello world"?

I discovered the bug as I tried to compile glibc inside the domU.
glibc's configure tries to compile a test program to determine the
sizeof the long datatype or something simple like that. So at least this
is another program that fails.

I did quick test, whether the empty program (just a main with return 0;
in it) segfaults - but it doesn't segfault. The moment I add a printf,
it segfaults again.

> Can you get a coredump from the fault and see what the faulting
> instruction was?

How do I do that?
Sorry for the stupid question, but unfortunatly this is beyond my
knowledge of the tooldchain :-(

I didn't find any automatically generated file.


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