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Re: Set arch_minimum_kernel for powerpc*le


On Wed, Jan 15, 2014 at 04:02:45PM +0000, Joseph S. Myers wrote:
> On Wed, 15 Jan 2014, Alan Modra wrote:
> 
> > Somehow this patch for powerpc64le missed being submitted.  OK to apply?
> > 
> > 	* sysdeps/unix/sysv/linux/powerpc/configure.in (arch_minimum_kernel):
> > 	Set for powerpc*le.
> > 	* sysdeps/unix/sysv/linux/powerpc/configure: Regenerate.
> 
> This is bug 15998 - thanks for fixing it.

Thanks for reminding me.  #BZ added to changelog.

> > +case "$config_machine" in
> > +  powerpc*le) arch_minimum_kernel=3.10 ;;
> > +esac
> 
> Was support in 3.10 (unmodified kernel.org release) actually functional 
> enough to be able to use current glibc?  I had the impression the first 
> kernel with working support was more likely to be 3.13.

You are correct that the first kernel.org release with working support
was 3.13.  However, there are unofficial kernels dating back to 3.10,
and sometimes distros backport support for particular features to an
older kernel.  That's why I chose 3.10.  --enable-kernel doesn't allow
you to specify less than arch_minimum_kernel.

I did a quick grep over the sources and couldn't see anything that
would change wrt arch_minimum_kernel at 3.10 rather than 3.13, except
of course the ABI tag.

-- 
Alan Modra
Australia Development Lab, IBM


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