Messages in this thread | | | Date | Tue, 11 Feb 2014 14:19:33 -0600 | From | Josh Cartwright <> | Subject | Re: [PATCH v2 1/5] drivers: of: add initialization code for reserved memory |
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On Tue, Feb 11, 2014 at 09:04:21PM +0100, Tomasz Figa wrote: > > > On 11.02.2014 21:02, Benjamin Herrenschmidt wrote: > >On Tue, 2014-02-11 at 19:01 +0000, Grant Likely wrote: > > > >>>except that the former IMHO better suits the definition of memory > >>>region, which I see as a single contiguous range of memory and can be > >>>simplified to have a single reg entry per region. > >> > >>My point is rather if multiple reg tuples are found in a reserved memory > >>node, the kernel must respect them and reserve the memory. I'm not > >>arguing about whether or not that makes for a good binding. > > > >agreed. > > My point is why, if the binding defines that just a single tuple should be > provided.
FWIW, the usecase I had mentioned in reply to Grant in the patch 5/5 thread [1] could make use of this. The shared memory region is split into a main chunk and several "auxiliary" chunk, but collectively these regions all share the same heap state.
Josh
1: http://lkml.kernel.org/r/20140205192502.GO20228@joshc.qualcomm.com
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