[PATCH v5.5] of/fdt: export fdt blob as /sys/firmware/fdt

On Wed, 19 Nov 2014 13:09:36 +0000
, Ian Campbell [off-list ref]
 wrote:

On Tue, 2014-11-18 at 22:11 +0000, Grant Likely wrote:

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* It also helps with exposing the reserved map to userspace, but kexec
  has done without that feature for years, and it is in the process of
  being deprecated in favour of /reserved-memory anyway.

This is the first I'd heard of the reserve map being deprecated, and
we're going to have DTs with reserved map entries for a long time going
forwards.

Deprecated, not removed or disabled. It will still work pretty much
forever, but users should be encouraged to move to the reserve-memory
tree.

I'm curious why that should be for the "OS should never touch this, here
be dragons" type memory, what are the benefits of the new scheme in that
case?

Merely for the reason of it makes the data available in exactly the same
manner as all the rest of the data in the tree.

g.