diff options
| author | David Woodhouse <dwmw@amazon.co.uk> | 2022-12-14 16:39:48 +0000 |
|---|---|---|
| committer | David Woodhouse <dwmw@amazon.co.uk> | 2023-03-01 08:22:50 +0000 |
| commit | e1db61b87b0e479bcacdf0c17656c8ee563cc5ba (patch) | |
| tree | 0d35512aae86a6b09ad8c7a08cf2443ce4cfbc44 /hw/i386/kvm/xen_evtchn.c | |
| parent | cf7679abddd05712c5cfbe5516328586eded22c3 (diff) | |
hw/xen: Implement EVTCHNOP_alloc_unbound
Signed-off-by: David Woodhouse <dwmw@amazon.co.uk>
Reviewed-by: Paul Durrant <paul@xen.org>
Diffstat (limited to 'hw/i386/kvm/xen_evtchn.c')
| -rw-r--r-- | hw/i386/kvm/xen_evtchn.c | 32 |
1 files changed, 32 insertions, 0 deletions
diff --git a/hw/i386/kvm/xen_evtchn.c b/hw/i386/kvm/xen_evtchn.c index ce7a969234..df25bf0806 100644 --- a/hw/i386/kvm/xen_evtchn.c +++ b/hw/i386/kvm/xen_evtchn.c @@ -837,6 +837,38 @@ int xen_evtchn_bind_ipi_op(struct evtchn_bind_ipi *ipi) return ret; } +int xen_evtchn_alloc_unbound_op(struct evtchn_alloc_unbound *alloc) +{ + XenEvtchnState *s = xen_evtchn_singleton; + uint16_t type_val; + int ret; + + if (!s) { + return -ENOTSUP; + } + + if (alloc->dom != DOMID_SELF && alloc->dom != xen_domid) { + return -ESRCH; + } + + if (alloc->remote_dom == DOMID_QEMU) { + type_val = PORT_INFO_TYPEVAL_REMOTE_QEMU; + } else if (alloc->remote_dom == DOMID_SELF || + alloc->remote_dom == xen_domid) { + type_val = 0; + } else { + return -EPERM; + } + + qemu_mutex_lock(&s->port_lock); + + ret = allocate_port(s, 0, EVTCHNSTAT_unbound, type_val, &alloc->port); + + qemu_mutex_unlock(&s->port_lock); + + return ret; +} + int xen_evtchn_send_op(struct evtchn_send *send) { XenEvtchnState *s = xen_evtchn_singleton; |