Re: [Xen-devel] Re: 2.6.28.7 domU: 32-bit emulation seems to be broken

[Milan Holzäpfel <listen@xxxxxxxx>]

On Tue, 17 Mar 2009 09:52:59 -0700
Jeremy Fitzhardinge <jeremy@xxxxxxxx> wrote:

> Sven Köhler wrote:
> > Jeremy Fitzhardinge schrieb:
> > 
> >> I need to find/set up an AMD system to try to repro it I think.  I think
> >> the problem is actually the return from the syscall, rather than the
> >> syscall entry itself.  What happens if you run the program under either
> >> strace or gdb?
> >>     
> >
> > The program just works:
> >
> > # strace ./a.out
> > [...]
> 
> OK, that confirms that its sysret32 that's failing.  vdso32=0 on the 
> kernel command line should be the workaround until we've got a proper fix.

Hi, 

I still notice this problem with vanilla 2.6.30.4 domU under Xen 3.3.2
(32 bit binaries on a 64 bit domU kernel segfault, AMD CPU).  vdso32=0
still helps. 

Any news? 

Regards,
Milan

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