# HG changeset patch
# User sos22@xxxxxxxxxxxxxxxxxxxx
# Node ID 97ffb7856239a937f391583e881fae695c86fb68
# Parent 98a802d258482b4d8e462493eb981741c82a713c
[MINI-OS] Extend alloc_unbound so that the remote domain isn't always dom0.
Signed-off-by: John D. Ramsdell <ramsdell@xxxxxxxxx>
Signed-off-by: Steven Smith <sos22@xxxxxxxxx>
---
extras/mini-os/events.c | 32 +++++++++++++++-----------------
extras/mini-os/include/events.h | 4 ++--
2 files changed, 17 insertions(+), 19 deletions(-)
diff -r 98a802d25848 -r 97ffb7856239 extras/mini-os/events.c
--- a/extras/mini-os/events.c Fri Jul 28 14:02:49 2006 +0100
+++ b/extras/mini-os/events.c Fri Jul 28 14:03:54 2006 +0100
@@ -141,25 +141,23 @@ void default_handler(evtchn_port_t port,
printk("[Port %d] - event received\n", port);
}
+/* Create a port available to the pal for exchanging notifications.
+ Returns the result of the hypervisor call. */
+
/* Unfortunate confusion of terminology: the port is unbound as far
as Xen is concerned, but we automatically bind a handler to it
from inside mini-os. */
-evtchn_port_t evtchn_alloc_unbound(evtchn_handler_t handler, void *data)
+
+int evtchn_alloc_unbound(domid_t pal, evtchn_handler_t handler,
+ void *data, evtchn_port_t
*port)
{
- evtchn_port_t port;
- evtchn_op_t op;
- int err;
-
- op.cmd = EVTCHNOP_alloc_unbound;
- op.u.alloc_unbound.dom = DOMID_SELF;
- op.u.alloc_unbound.remote_dom = 0;
-
- err = HYPERVISOR_event_channel_op(&op);
- if (err) {
- printk("Failed to alloc unbound evtchn: %d.\n", err);
- return -1;
- }
- port = op.u.alloc_unbound.port;
- bind_evtchn(port, handler, data);
- return port;
+ evtchn_op_t op;
+ op.cmd = EVTCHNOP_alloc_unbound;
+ op.u.alloc_unbound.dom = DOMID_SELF;
+ op.u.alloc_unbound.remote_dom = pal;
+ int err = HYPERVISOR_event_channel_op(&op);
+ if (err)
+ return err;
+ *port = bind_evtchn(op.u.alloc_unbound.port, handler, data);
+ return err;
}
diff -r 98a802d25848 -r 97ffb7856239 extras/mini-os/include/events.h
--- a/extras/mini-os/include/events.h Fri Jul 28 14:02:49 2006 +0100
+++ b/extras/mini-os/include/events.h Fri Jul 28 14:03:54 2006 +0100
@@ -31,8 +31,8 @@ evtchn_port_t bind_evtchn(evtchn_port_t
void *data);
void unbind_evtchn(evtchn_port_t port);
void init_events(void);
-evtchn_port_t evtchn_alloc_unbound(evtchn_handler_t handler,
- void *data);
+int evtchn_alloc_unbound(domid_t pal, evtchn_handler_t handler,
+ void *data, evtchn_port_t
*port);
static inline int notify_remote_via_evtchn(evtchn_port_t port)
{
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