tree d6a6608140122d27a728406b9554ce9d9e7377cc
parent 5a143586d36fd98fd74b9449159f1ad94ea4f5bb
author David Brazdil <dbrazdil@google.com> 1565095198 +0100
committer David Brazdil <dbrazdil@google.com> 1565712770 +0100

Enable MMU and caching in VM API tests

VM API tests are failing on real hardware because VMs are not seeing
data written by the hypervisor. The reason for this is that Hafnium has
data caching enabled while the test VMs do not. Solve this discrepancy
by enabling data caching in the VMs too, which requires enabling stage-1
MMU translation.

The entire address space is identity-mapped with read-write-execute
permisssions. Only GIC tests currently require custom device mappings.

Implementation shares ptable management code from src/mm.c and
src/arch/mm.c.

Bug: 138985026
Test: ./kokoro/ubuntu/build.sh
Change-Id: Ib9f599c448d70296a6ca869ddbb51abfcc55148d