svn commit: r280728 - head/sys/conf

[Warner Losh]

> On Mar 26, 2015, at 9:04 PM, Rui Paulo <rpaulo at me.com> wrote:
> 
> 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.

Yea, the ships passed in the night. I’ve had these changes in my tree for a while.

However, It kinda can be overridden by compiling the modules directly. Since
the actual module’s Makefiles don’t depend on this, I think we’re OK. Can you test
building a kernel on the BBB you have and let me know if it produces working ZFS?

Warner
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