xen/arm64: Document the register mapping aarch64 <-> aarch32
authorJulien Grall <julien.grall@citrix.com>
Fri, 11 Dec 2015 15:28:21 +0000 (15:28 +0000)
committerIan Campbell <ian.campbell@citrix.com>
Tue, 5 Jan 2016 11:49:39 +0000 (11:49 +0000)
commit1f38c6603c7160a2ee6b714293bf936f4f371b73
tree5b1d4278d8f55389cde0f9afdbe7887e27f43266
parentefeedfa0eeec687a5df96c575160c33caeb6b31f
xen/arm64: Document the register mapping aarch64 <-> aarch32

The mapping between aarch64 and aarch32 has not been chosen in random.
It's based on D1.20.1 in ARM DDI 0487A.d.

The section is not obvious to find in the spec, so make it clear for the
anyone else.

Signed-off-by: Julien Grall <julien.grall@citrix.com>
Acked-by: Ian Campbell <ian.campbell@citrix.com>
xen/include/asm-arm/arm64/processor.h