diff options
| author | Nicholas Piggin <npiggin@gmail.com> | 2019-07-22 16:17:52 +1000 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2019-08-21 17:17:39 +1000 |
| commit | 93eac7b8f44738f7d2f4ba4460d67b04af5b0b99 (patch) | |
| tree | 9044565ac3d6082ac008cafa39761d394e9242d6 /hw/ppc/spapr.c | |
| parent | c508bd12f65e14f82eb62e462bcb64898d8806a6 (diff) | |
spapr: Implement ibm,suspend-me
This has been useful to modify and test the Linux pseries suspend
code but it requires modification to the guest to call it (due to
being gated by other unimplemented features). It is not otherwise
used by Linux yet, but work is slowly progressing there.
This allows a (lightly modified) guest kernel to suspend with
`echo mem > /sys/power/state` and be resumed with system_wakeup
monitor command.
Signed-off-by: Nicholas Piggin <npiggin@gmail.com>
Message-Id: <20190722061752.22114-2-npiggin@gmail.com>
Acked-by: Paolo Bonzini <pbonzini@redhat.com>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'hw/ppc/spapr.c')
| -rw-r--r-- | hw/ppc/spapr.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index 56b33571c5..51e1cb0d46 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -3083,6 +3083,13 @@ static void spapr_machine_init(MachineState *machine) qemu_register_boot_set(spapr_boot_set, spapr); + /* + * Nothing needs to be done to resume a suspended guest because + * suspending does not change the machine state, so no need for + * a ->wakeup method. + */ + qemu_register_wakeup_support(); + if (kvm_enabled()) { /* to stop and start vmclock */ qemu_add_vm_change_state_handler(cpu_ppc_clock_vm_state_change, |