From: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
To: qemu-devel@nongnu.org
Cc: izumi.taku@jp.fujitsu.com, alex.williamson@redhat.com
Subject: [Qemu-devel] [RFC v9 09/18] vfio: add ref for group to support own affected groups
Date: Tue, 9 Jun 2015 11:37:37 +0800 [thread overview]
Message-ID: <271aa9f9c26213c43241c44273a18109af505223.1433812962.git.chen.fan.fnst@cn.fujitsu.com> (raw)
In-Reply-To: <cover.1433812962.git.chen.fan.fnst@cn.fujitsu.com>
Signed-off-by: Chen Fan <chen.fan.fnst@cn.fujitsu.com>
---
hw/vfio/common.c | 12 ++++++++++++
include/hw/vfio/vfio-common.h | 1 +
2 files changed, 13 insertions(+)
diff --git a/hw/vfio/common.c b/hw/vfio/common.c
index 4230f83..eff1930 100644
--- a/hw/vfio/common.c
+++ b/hw/vfio/common.c
@@ -832,6 +832,7 @@ VFIOGroup *vfio_get_group(int groupid, AddressSpace *as)
goto close_fd_exit;
}
+ group->ref = 0;
group->groupid = groupid;
QLIST_INIT(&group->device_list);
@@ -865,6 +866,15 @@ void vfio_put_group(VFIOGroup *group)
return;
}
+ if (group->ref) {
+ if (QLIST_EMPTY(&group->device_list)) {
+ if (group->container) {
+ vfio_disconnect_container(group);
+ }
+ }
+ return;
+ }
+
vfio_kvm_device_del_group(group);
if (group->container) {
vfio_disconnect_container(group);
@@ -901,6 +911,7 @@ int vfio_get_device(VFIOGroup *group, const char *name,
return ret;
}
+ group->ref++;
vbasedev->fd = fd;
vbasedev->group = group;
QLIST_INSERT_HEAD(&group->device_list, vbasedev, next);
@@ -921,6 +932,7 @@ void vfio_put_base_device(VFIODevice *vbasedev)
if (!vbasedev->group) {
return;
}
+ vbasedev->group->ref--;
QLIST_REMOVE(vbasedev, next);
vbasedev->group = NULL;
trace_vfio_put_base_device(vbasedev->fd);
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 0d1fb80..3eb042e 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -117,6 +117,7 @@ struct VFIODeviceOps {
typedef struct VFIOGroup {
int fd;
int groupid;
+ int ref;
VFIOContainer *container;
QLIST_HEAD(, VFIODevice) device_list;
QLIST_ENTRY(VFIOGroup) next;
--
1.9.3
next prev parent reply other threads:[~2015-06-09 3:41 UTC|newest]
Thread overview: 32+ messages / expand[flat|nested] mbox.gz Atom feed top
2015-06-09 3:37 [Qemu-devel] [RFC v9 00/18] vfio-pci: pass the aer error to guest Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 01/18] vfio: extract vfio_get_hot_reset_info as a single function Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 02/18] vfio: squeeze out vfio_pci_do_hot_reset for support bus reset Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 03/18] pcie: modify the capability size assert Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 04/18] vfio: make the 4 bytes aligned for capability size Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 05/18] vfio: add pcie extanded capability support Chen Fan
2015-06-09 21:22 ` Alex Williamson
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 06/18] aer: impove pcie_aer_init to support vfio device Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 07/18] vfio: add aer support for " Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 08/18] vfio: improve vfio_get_group to support adding group without devices Chen Fan
2015-06-09 21:23 ` Alex Williamson
2015-06-09 3:37 ` Chen Fan [this message]
2015-06-09 21:23 ` [Qemu-devel] [RFC v9 09/18] vfio: add ref for group to support own affected groups Alex Williamson
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 10/18] get all affected groups for each device support aer Chen Fan
2015-06-09 21:22 ` Alex Williamson
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 11/18] vfio: add check host bus reset is support or not Chen Fan
2015-06-09 21:23 ` Alex Williamson
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 12/18] pci: add bus reset_notifiers callbacks for host bus reset Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 13/18] vfio: add sec_bus_reset notifier to notify physical bus reset is needed Chen Fan
2015-06-09 21:23 ` Alex Williamson
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 14/18] vfio: improve vfio_pci_hot_reset to support more case Chen Fan
2015-06-09 21:24 ` Alex Williamson
2015-06-16 8:10 ` Chen Fan
2015-06-16 14:08 ` Alex Williamson
2015-06-17 6:28 ` Chen Fan
2015-06-17 15:23 ` Alex Williamson
2015-06-18 10:27 ` Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 15/18] vfio: do hot bus reset when do virtual secondary bus reset Chen Fan
2015-06-09 21:23 ` Alex Williamson
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 16/18] pcie_aer: expose pcie_aer_msg() interface Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 17/18] vfio-pci: pass the aer error to guest Chen Fan
2015-06-09 3:37 ` [Qemu-devel] [RFC v9 18/18] vfio: add 'aer' property to expose aercap Chen Fan
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