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| author | Paul Durrant <paul.durrant@citrix.com> | 2019-04-08 16:16:15 +0100 |
|---|---|---|
| committer | Anthony PERARD <anthony.perard@citrix.com> | 2019-06-24 10:42:29 +0100 |
| commit | c0b336ea19a93801ee2333be525d0473d28a10f8 (patch) | |
| tree | d74b1d1fda827ae9e221539e82b07330834a2594 /include | |
| parent | 5feeb718d7914c3c921cc811a5844488a5644ea6 (diff) | |
| download | qemu-c0b336ea19a93801ee2333be525d0473d28a10f8.zip | |
xen-bus: use a separate fd for each event channel
To better support use of IOThread-s it will be necessary to be able to set
the AioContext for each XenEventChannel and hence it is necessary to open a
separate handle to libxenevtchan for each channel.
This patch stops using NotifierList for event channel callbacks, replacing
that construct by a list of complete XenEventChannel structures. Each of
these now has a xenevtchn_handle pointer in place of the single pointer
previously held in the XenDevice structure. The individual handles are
opened/closed in xen_device_bind/unbind_event_channel(), replacing the
single open/close in xen_device_realize/unrealize().
NOTE: This patch does not add an AioContext parameter to
xen_device_bind_event_channel(). That will be done in a subsequent
patch.
Signed-off-by: Paul Durrant <paul.durrant@citrix.com>
Reviewed-by: Anthony PERARD <anthony.perard@citrix.com>
Message-Id: <20190408151617.13025-2-paul.durrant@citrix.com>
Signed-off-by: Anthony PERARD <anthony.perard@citrix.com>
Diffstat (limited to 'include')
| -rw-r--r-- | include/hw/xen/xen-bus.h | 6 |
1 files changed, 2 insertions, 4 deletions
diff --git a/include/hw/xen/xen-bus.h b/include/hw/xen/xen-bus.h index 3183f10e3c..3315f0de20 100644 --- a/include/hw/xen/xen-bus.h +++ b/include/hw/xen/xen-bus.h @@ -15,6 +15,7 @@ typedef void (*XenWatchHandler)(void *opaque); typedef struct XenWatch XenWatch; +typedef struct XenEventChannel XenEventChannel; typedef struct XenDevice { DeviceState qdev; @@ -28,8 +29,7 @@ typedef struct XenDevice { XenWatch *backend_online_watch; xengnttab_handle *xgth; bool feature_grant_copy; - xenevtchn_handle *xeh; - NotifierList event_notifiers; + QLIST_HEAD(, XenEventChannel) event_channels; } XenDevice; typedef char *(*XenDeviceGetName)(XenDevice *xendev, Error **errp); @@ -119,8 +119,6 @@ void xen_device_copy_grant_refs(XenDevice *xendev, bool to_domain, XenDeviceGrantCopySegment segs[], unsigned int nr_segs, Error **errp); -typedef struct XenEventChannel XenEventChannel; - typedef void (*XenEventHandler)(void *opaque); XenEventChannel *xen_device_bind_event_channel(XenDevice *xendev, |