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| author | Elena Ufimtseva <elena.ufimtseva@oracle.com> | 2021-01-29 11:46:21 -0500 |
|---|---|---|
| committer | Stefan Hajnoczi <stefanha@redhat.com> | 2021-02-10 09:23:28 +0000 |
| commit | b6cc02d98fc6df49786608e5916f3de883a9461c (patch) | |
| tree | d214f65c8e14f654b90f88f14965656238963f42 /hw/remote/message.c | |
| parent | 1bec145cd91c82b87ae715770f8961960b1d93b0 (diff) | |
| download | qemu-b6cc02d98fc6df49786608e5916f3de883a9461c.zip qemu-b6cc02d98fc6df49786608e5916f3de883a9461c.tar.gz qemu-b6cc02d98fc6df49786608e5916f3de883a9461c.tar.bz2 | |
multi-process: perform device reset in the remote process
Perform device reset in the remote process when QEMU performs
device reset. This is required to reset the internal state
(like registers, etc...) of emulated devices
Signed-off-by: Elena Ufimtseva <elena.ufimtseva@oracle.com>
Signed-off-by: John G Johnson <john.g.johnson@oracle.com>
Signed-off-by: Jagannathan Raman <jag.raman@oracle.com>
Reviewed-by: Stefan Hajnoczi <stefanha@redhat.com>
Message-id: 7cb220a51f565dc0817bd76e2f540e89c2d2b850.1611938319.git.jag.raman@oracle.com
Signed-off-by: Stefan Hajnoczi <stefanha@redhat.com>
Diffstat (limited to 'hw/remote/message.c')
| -rw-r--r-- | hw/remote/message.c | 22 |
1 files changed, 22 insertions, 0 deletions
diff --git a/hw/remote/message.c b/hw/remote/message.c index adab040..11d7298 100644 --- a/hw/remote/message.c +++ b/hw/remote/message.c @@ -19,6 +19,7 @@ #include "exec/memattrs.h" #include "hw/remote/memory.h" #include "hw/remote/iohub.h" +#include "sysemu/reset.h" static void process_config_write(QIOChannel *ioc, PCIDevice *dev, MPQemuMsg *msg, Error **errp); @@ -26,6 +27,8 @@ static void process_config_read(QIOChannel *ioc, PCIDevice *dev, MPQemuMsg *msg, Error **errp); static void process_bar_write(QIOChannel *ioc, MPQemuMsg *msg, Error **errp); static void process_bar_read(QIOChannel *ioc, MPQemuMsg *msg, Error **errp); +static void process_device_reset_msg(QIOChannel *ioc, PCIDevice *dev, + Error **errp); void coroutine_fn mpqemu_remote_msg_loop_co(void *data) { @@ -69,6 +72,9 @@ void coroutine_fn mpqemu_remote_msg_loop_co(void *data) case MPQEMU_CMD_SET_IRQFD: process_set_irqfd_msg(pci_dev, &msg); break; + case MPQEMU_CMD_DEVICE_RESET: + process_device_reset_msg(com->ioc, pci_dev, &local_err); + break; default: error_setg(&local_err, "Unknown command (%d) received for device %s" @@ -206,3 +212,19 @@ fail: getpid()); } } + +static void process_device_reset_msg(QIOChannel *ioc, PCIDevice *dev, + Error **errp) +{ + DeviceClass *dc = DEVICE_GET_CLASS(dev); + DeviceState *s = DEVICE(dev); + MPQemuMsg ret = { 0 }; + + if (dc->reset) { + dc->reset(s); + } + + ret.cmd = MPQEMU_CMD_RET; + + mpqemu_msg_send(&ret, ioc, errp); +} |