tree 565803b40b7f8be3483c502e1bc6809974c4afee
parent 24f4f7956edeffb1ae41809e09f14b6d5e7875c8
author Orion Hodson <oth@google.com> 1500560924 +0100
committer Orion Hodson <oth@google.com> 1500564167 +0100

ARM64: JIT Code Cache maintenance

Cache maintenance operations on ARM64 can cause segmentation faults if
addresses are not backed by physical RAM. Some Linux kernel verions
have a bug that exposes these faults to user-land which crashes
ART. Some of the test devices used by the ART buildbots have this
issue.

This CL explicitly faults in memory relevant addresses before
performing cache maintenance operations.

Test: art/test.py --target --64 --r
Change-Id: Id7390c14f75c13b3fbbbbb742afeb9ffef9a3801