On Mon, Feb 18, 2013 at 09:41:30AM +0100, Ingo Molnar wrote:
>
> * H. Peter Anvin <h...@zytor.com> wrote:
>
> > On 02/16/2013 11:46 AM, Linus Torvalds wrote:
> > >Adding Peter Anvin to the people, just in case he sees what's wrong
> > >with the system call stub generation that keeps excessively old object
> > >files around. If it's easy to fix, it might be worth trying to make it
> > >ok to switch from i386 to x86-64 and back in the same tree.
> >
> > I have not been able to reproduce this; it seems to Just
> > Work[TM].
> >
> > The syscall header stuff is definitely not to blame: it
> > doesn't even *see* the CONFIG_ settings; instead they are only
> > used to determine which subset of files to create, but the
> > files themselves are configuration-independent. This is by
> > design.
> >
> > As such, without an actual known to fail test case there isn't
> > much I can do.
>
> I tried (based on the versions given by Paul):
>
> git checkout v3.7-rc7
> make ARCH=i386 defconfig
> make -j64 bzImage
>
> git checkout v3.8-rc7
> make ARCH=x86_64 olddefconfig
> make -j64 bzImage
>
> but it built just fine. The build bug might depend on the
> specific config file, or might depend on tooling details?
The problem is that the git tree I used is one that I build out of
very infrequently, and so all I really know about the previous
build was that it was done a long time ago. :-(
Thanx, Paul
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