On arm64 systems in particular, the use of /dev/mem is not recommended.  The
contents may or may not be valid depending on the memory map being used, since
they are not standardized.

The attached patch will cause arm64 (aka ARMv8 or AArch64) Linux systems to
use a new file called source/os_specific/service_layers/oslinuxtbl_nodevmem.c
(a subset of the oslinuxtbl.c code) that allows acpidump to read all ACPI
tables from /sys/firmware/acpi instead of from /dev/mem.  This will help ensure
that the tables retrieved are the ones actually being used and that their
content is correct.

This patch applies on top of the 20150515 version, and I have included it in
the 20150515-2 versions of the Fedora and Debian packages.  I've tried the
resulting acpidump on x86, x86_64 and arm64 systems and it seems to work well.

Signed-off-by: Al Stone <ahs3(a)redhat.com>

-- 
ciao,
al
-----------------------------------
Al Stone
Software Engineer
Red Hat, Inc.
ahs3(a)redhat.com
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