Before GKI enforcement and driver modulization, vendor drivers’
data section was part of vmlinux and they were registered with
minidump and collected when crash happens.
With GKI, vendor modules’ data section is part of va-malloc
region, which is virtually contiguous but physically not. It
is difficult to fit into the existing PA based minidump framework.
New VA-minidump driver allocates some CMA region which is registered
as one entry in minidump infrastructure. During panic, the driver
creates an ELF which is based on VA, copies it into that CMA region,
and finally it gets dumped as md_KVA_DUMP.bin.
This change makes use of this VA-minidump framework and implement
the APIs accordingly.
Change-Id: Ib1282990c91408bcd4e68365afe694830b90d0ac
CRs-Fixed: 3232060
56ebf2707b