diff options
| author | Mike Larkin <mlarkin@cvs.openbsd.org> | 2017-05-02 09:50:39 +0000 |
|---|---|---|
| committer | Mike Larkin <mlarkin@cvs.openbsd.org> | 2017-05-02 09:50:39 +0000 |
| commit | 42fcf533d73f09c42e4607a7c6934435fd51d769 (patch) | |
| tree | d42ad14ba42230a2628477e8c06c7e36fc33c1f4 /sys/dev/pv/vmmci.c | |
| parent | 3ae4fba3c58baa50363f964c3edcb8bc76435ea1 (diff) | |
Resynchronize the guest RTC via vmmci(4) on host resume from zzz/ZZZ
(kernel part)
This feature is for OpenBSD guests only.
ok reyk, kettenis
Diffstat (limited to 'sys/dev/pv/vmmci.c')
| -rw-r--r-- | sys/dev/pv/vmmci.c | 10 |
1 files changed, 8 insertions, 2 deletions
diff --git a/sys/dev/pv/vmmci.c b/sys/dev/pv/vmmci.c index ee9c7c195b0..ac44e542885 100644 --- a/sys/dev/pv/vmmci.c +++ b/sys/dev/pv/vmmci.c @@ -1,4 +1,4 @@ -/* $OpenBSD: vmmci.c,v 1.2 2017/03/15 18:06:18 reyk Exp $ */ +/* $OpenBSD: vmmci.c,v 1.3 2017/05/02 09:50:38 mlarkin Exp $ */ /* * Copyright (c) 2017 Reyk Floeter <reyk@openbsd.org> @@ -37,6 +37,7 @@ enum vmmci_cmd { VMMCI_NONE = 0, VMMCI_SHUTDOWN, VMMCI_REBOOT, + VMMCI_SYNCRTC, }; struct vmmci_softc { @@ -73,6 +74,7 @@ struct cfattach vmmci_ca = { /* Feature bits */ #define VMMCI_F_TIMESYNC (1<<0) #define VMMCI_F_ACK (1<<1) +#define VMMCI_F_SYNCRTC (1<<2) struct cfdriver vmmci_cd = { NULL, "vmmci", DV_DULL @@ -103,7 +105,7 @@ vmmci_attach(struct device *parent, struct device *self, void *aux) vsc->sc_ipl = IPL_NET; sc->sc_virtio = vsc; - features = VMMCI_F_TIMESYNC|VMMCI_F_ACK; + features = VMMCI_F_TIMESYNC | VMMCI_F_ACK | VMMCI_F_SYNCRTC; features = virtio_negotiate_features(vsc, features, NULL); if (features & VMMCI_F_TIMESYNC) { @@ -171,6 +173,10 @@ vmmci_config_change(struct virtio_softc *vsc) case VMMCI_REBOOT: pvbus_reboot(&sc->sc_dev); break; + case VMMCI_SYNCRTC: + inittodr(time_second); + sc->sc_cmd = VMMCI_NONE; + break; default: printf("%s: invalid command %d\n", sc->sc_dev.dv_xname, cmd); cmd = VMMCI_NONE; |