svn commit: r280728 - head/sys/conf

[Rui Paulo]

On Mar 26, 2015, at 19:35, Warner Losh <imp at freebsd.org> wrote:
> 
> Author: imp
> Date: Fri Mar 27 02:35:25 2015
> New Revision: 280728
> URL: https://svnweb.freebsd.org/changeset/base/280728
> 
> Log:
>  Categorize certain kernel builds as being broken in certain places.
> 
>  Differential Revision: https://reviews.freebsd.org/D2011
> 
> Modified:
>  head/sys/conf/kern.opts.mk
> 
> Modified: head/sys/conf/kern.opts.mk
> ==============================================================================
> --- head/sys/conf/kern.opts.mk	Fri Mar 27 02:35:11 2015	(r280727)
> +++ head/sys/conf/kern.opts.mk	Fri Mar 27 02:35:25 2015	(r280728)
> @@ -75,6 +75,34 @@ BROKEN_OPTIONS+= EISA
> BROKEN_OPTIONS+= OFED
> .endif
> 
> +# Options that cannot be turned on this architecture, usually because
> +# of compilation or other issues so severe it cannot be used even
> +# on an experimental basis
> +__ALWAYS_NO_OPTIONS=
> +
> +# Things that don't work based on the CPU
> +.if ${MACHINE_CPUARCH} == "arm"
> +__ALWAYS_NO_OPTIONS+= CDDL ZFS
> +.endif

This isn't entirely true.  With a properly tuned ARC and kmem size, ZFS seems to work on a BeagleBone.  There have been reports on the freebsd-arm mailing list this month.  Based on my understanding of your previous commit, it looks like this can't be overridden which is a problem.

--
Rui Paulo