Re: LOCALVERSION_AUTO considered harmful
From: Thomas Gleixner
Date: Sun Apr 11 2010 - 18:25:03 EST
On Sun, 11 Apr 2010, Pavel Machek wrote:
> On Sun 2010-04-11 20:58:58, Geert Uytterhoeven wrote:
> > On Mon, Apr 12, 2010 at 20:51, Alexey Dobriyan <adobriyan@xxxxxxxxx> wrote:
> > > On Sun, Apr 11, 2010 at 06:47:01PM +0200, Pavel Machek wrote:
> > >> @@ -99,6 +98,11 @@ config LOCALVERSION_AUTO
> > >> appended after any matching localversion* files, and after the value
> > >> set in CONFIG_LOCALVERSION.
> > >>
> > >> + Unfortunately, such finegrained versioning will mean that you will
> > >> + not be able to use modules for development; even "make modules"
> > >> + will change module versions, making recompiled modules impossible
> > >> + to insert into old kernel.
> > >
> > > That's conditional BS.
> > > Turn off CONFIG_MODVERSIONS already.
> >
> > Yeah, I disabled it ages ago. Even then (before git, probably even
> > before bitkeeper)
> > I had hard times inserting modules...
>
> I _had_ it off
>
> # CONFIG_MODVERSIONS is not set
>
> It seems some checking survives CONFIG_MODVERSIONS unset and that
> checking is strict enough to refuse module load after one "make
> modules" with LOCALVERSION_AUTO on...
So instead of fixing the CONFIG_MODVERSIONS=n case you go the easy way
of killing LOCALVERSION_AUTO ? Brilliant.
Thanks,
tglx