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multi-process: perform device reset in the remote process

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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>
This commit is contained in:
Elena Ufimtseva 2021-01-29 11:46:21 -05:00 • committed by Stefan Hajnoczi
parent 1bec145cd9
commit b6cc02d98f
3 changed files with 42 additions and 0 deletions
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19
hw/remote/proxy.c
View file

@ -26,6 +26,7 @@
#include "util/event_notifier-posix.c"
static void probe_pci_info(PCIDevice *dev, Error **errp);
static void proxy_device_reset(DeviceState *dev);
static void proxy_intx_update(PCIDevice *pci_dev)
{
@ -202,6 +203,8 @@ static void pci_proxy_dev_class_init(ObjectClass *klass, void *data)
k->config_read = pci_proxy_read_config;
k->config_write = pci_proxy_write_config;
dc->reset = proxy_device_reset;
device_class_set_props(dc, proxy_properties);
}
@ -358,3 +361,19 @@ static void probe_pci_info(PCIDevice *dev, Error **errp)
}
}
}
static void proxy_device_reset(DeviceState *dev)
{
PCIProxyDev *pdev = PCI_PROXY_DEV(dev);
MPQemuMsg msg = { 0 };
Error *local_err = NULL;
msg.cmd = MPQEMU_CMD_DEVICE_RESET;
msg.size = 0;
mpqemu_msg_send_and_await_reply(&msg, pdev, &local_err);
if (local_err) {
error_report_err(local_err);
}
}