motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-01 14:53:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

vhost+postcopy: Transmit 'listen' to slave

Browse source 
Notify the vhost-user slave on reception of the 'postcopy-listen'
event from the source.

Signed-off-by: Dr. David Alan Gilbert <dgilbert@redhat.com>
Reviewed-by: Marc-André Lureau <marcandre.lureau@redhat.com>
Reviewed-by: Peter Xu <peterx@redhat.com>
Reviewed-by: Michael S. Tsirkin <mst@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
This commit is contained in:
Dr. David Alan Gilbert 2018-03-12 17:21:06 +00:00 • committed by Michael S. Tsirkin
parent f82c11165f
commit 6864a7b5ac
7 changed files with 77 additions and 0 deletions
Download patch file Download diff file Expand all files Collapse all files

19
contrib/libvhost-user/libvhost-user.c
View file

@ -98,6 +98,7 @@ vu_request_to_string(unsigned int req)
REQ(VHOST_USER_GET_CONFIG),
REQ(VHOST_USER_SET_CONFIG),
REQ(VHOST_USER_POSTCOPY_ADVISE),
REQ(VHOST_USER_POSTCOPY_LISTEN),
REQ(VHOST_USER_MAX),
};
#undef REQ
@ -931,6 +932,22 @@ out:
return true; /* = send a reply */
}
static bool
vu_set_postcopy_listen(VuDev *dev, VhostUserMsg *vmsg)
{
vmsg->payload.u64 = -1;
vmsg->size = sizeof(vmsg->payload.u64);
if (dev->nregions) {
vu_panic(dev, "Regions already registered at postcopy-listen");
return true;
}
dev->postcopy_listening = true;
vmsg->flags = VHOST_USER_VERSION | VHOST_USER_REPLY_MASK;
vmsg->payload.u64 = 0; /* Success */
return true;
}
static bool
vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
{
@ -1004,6 +1021,8 @@ vu_process_message(VuDev *dev, VhostUserMsg *vmsg)
break;
case VHOST_USER_POSTCOPY_ADVISE:
return vu_set_postcopy_advise(dev, vmsg);
case VHOST_USER_POSTCOPY_LISTEN:
return vu_set_postcopy_listen(dev, vmsg);
default:
vmsg_close_fds(vmsg);
vu_panic(dev, "Unhandled request: %d", vmsg->request);