dev: Add post-fork handling for disk images
authorAndreas Sandberg <andreas@sandberg.pp.se>
Thu, 26 Nov 2015 10:11:52 +0000 (10:11 +0000)
committerAndreas Sandberg <andreas@sandberg.pp.se>
Thu, 26 Nov 2015 10:11:52 +0000 (10:11 +0000)
commit6de52699bb10ec445e45400b419bb61122a68162
tree5b9fef2a697556e4b9cca062bcd50fa5c0f440aa
parent738d71f6a93e2da9ef5bb1490f2b94f9541735e3
dev: Add post-fork handling for disk images

This changeset adds support for notifying the disk images that the simulator has
been forked. We need to disable the saving of the CoW disk image from the child
process, and we need to make sure that systems which use a raw disk image are
not allowed to fork to avoid two or more gem5 processes writing to the same disk
image.

Signed-off-by: Andreas Sandberg <andreas@sandberg.pp.se>
[sascha.bischoff@arm.com: Rebased patches onto a newer gem5 version]
Signed-off-by: Sascha Bischoff <sascha.bischoff@arm.com>
Signed-off-by: Andreas Sandberg <andreas.sandberg@arm.com>
src/dev/storage/disk_image.cc
src/dev/storage/disk_image.hh