Re: [uml-devel] [PATCH] x86, hweight: Fix UML boot crash

From: Borislav Petkov
Date: Sun Jun 13 2010 - 03:08:16 EST


From: Geert Uytterhoeven <geert@xxxxxxxxxxxxxx>
Date: Sat, Jun 12, 2010 at 08:37:39PM +0200

> > Cool :). However, according to Geert, this doesn't fix it:
> >
> > http://marc.info/?l=linux-kernel&m=127522065202435&w=2
> >
> > It could be related to the -mregparm being broken on 32-bit UML since
> > Geert's UML "guest" is 32-bit. However, even if we fix this, it won't
>
> No, guest and host are both x86_64.

Ok, maybe I don't understand UML - it's just that all address values in
the backtrace are 32-bit (e.g. RDX: 00000000ffff8aed, with the upper
8 bytes zeroed out) and I assumed that this is a 32-bit "guest" on a
64-bit host.

--
Regards/Gruss,
Boris.
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