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[aarch64] VM status remains "running" after it's suspended
The issue is observed on aarch64 (I didn't check x86) with latest upstream QEMU bits.
Steps to reproduce:
1) start guest
2) suspend guest with this command:
# echo mem > /sys/power/state
Check console messages, which should indicate that guest has been suspended.
3) check guest status through HMP command "info status":
(qemu) info status
info status
VM status: running
Note it's "running", which is incorrect.
QEMU version:
# qemu-system-aarch64 --version
QEMU emulator version 3.1.50 (v3.1.0-2203-g9403bcc)
Copyright (c) 2003-2019 Fabrice Bellard and the QEMU Project developers
The issue prevents user from resuming a suspended guest through "system_wakeup" HMP command, because QEMU thinks the guest is in running state and does nothing.
I think the issues occurs because qemu_system_wakeup_request() doesn't get called. It seems the root cause is with ACPI related code.
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