Share mapped memory to the host when guest is in init phase

[joukkone]

Signed-off-by: Jouni Ukkonen jouni.ukkonen@unikie.com

[janik-h]

It looks like the area is not added to shared page bookkeeping (check set_share). Due to this any logic that depends on the is_share do not work for those pages which are left shared during init phase.

[jkrh]

Wait why would you want to do this? Which pages are you trying to leave as shared?

[jkrh]

Besides, I think we go to RUNNING state already when the initial cpu issues PSCI_VERSION, so there shouldn't be any pages this actually leaves open.

[joukkone]

Wait why would you want to do this? Which pages are you trying to leave as shared?

If host blinding is enabled, crosvm/cuttlefish cause crash during init phase.

[jkrh]

That said, I don't think this is the right approach. You would need to check what the guest kernel attempts to share exactly and add a patch to the guest kernel to open it up.