QEMU-Devel Archive on lore.kernel.org
 help / color / Atom feed
From: Kirti Wankhede <kwankhede@nvidia.com>
To: <alex.williamson@redhat.com>, <cjia@nvidia.com>
Cc: Zhengxiao.zx@Alibaba-inc.com, kevin.tian@intel.com,
	yi.l.liu@intel.com, yan.y.zhao@intel.com, eskultet@redhat.com,
	ziye.yang@intel.com, qemu-devel@nongnu.org, cohuck@redhat.com,
	shuangtai.tst@alibaba-inc.com, dgilbert@redhat.com,
	zhi.a.wang@intel.com, mlevitsk@redhat.com, pasic@linux.ibm.com,
	aik@ozlabs.ru, Kirti Wankhede <kwankhede@nvidia.com>,
	eauger@redhat.com, felipe@nutanix.com,
	jonathan.davies@nutanix.com, changpeng.liu@intel.com,
	Ken.Xue@amd.com
Subject: [PATCH v16 QEMU 07/16] vfio: Add migration state change notifier
Date: Wed, 25 Mar 2020 02:39:05 +0530
Message-ID: <1585084154-29461-8-git-send-email-kwankhede@nvidia.com> (raw)
In-Reply-To: <1585084154-29461-1-git-send-email-kwankhede@nvidia.com>

Added migration state change notifier to get notification on migration state
change. These states are translated to VFIO device state and conveyed to vendor
driver.

Signed-off-by: Kirti Wankhede <kwankhede@nvidia.com>
Reviewed-by: Neo Jia <cjia@nvidia.com>
---
 hw/vfio/migration.c           | 29 +++++++++++++++++++++++++++++
 hw/vfio/trace-events          |  1 +
 include/hw/vfio/vfio-common.h |  1 +
 3 files changed, 31 insertions(+)

diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c
index af9443c275fb..22ded9d28cf3 100644
--- a/hw/vfio/migration.c
+++ b/hw/vfio/migration.c
@@ -154,6 +154,27 @@ static void vfio_vmstate_change(void *opaque, int running, RunState state)
     }
 }
 
+static void vfio_migration_state_notifier(Notifier *notifier, void *data)
+{
+    MigrationState *s = data;
+    VFIODevice *vbasedev = container_of(notifier, VFIODevice, migration_state);
+    int ret;
+
+    trace_vfio_migration_state_notifier(vbasedev->name, s->state);
+
+    switch (s->state) {
+    case MIGRATION_STATUS_CANCELLING:
+    case MIGRATION_STATUS_CANCELLED:
+    case MIGRATION_STATUS_FAILED:
+        ret = vfio_migration_set_state(vbasedev,
+                      ~(VFIO_DEVICE_STATE_SAVING | VFIO_DEVICE_STATE_RESUMING),
+                      VFIO_DEVICE_STATE_RUNNING);
+        if (ret) {
+            error_report("%s: Failed to set state RUNNING", vbasedev->name);
+        }
+    }
+}
+
 static int vfio_migration_init(VFIODevice *vbasedev,
                                struct vfio_region_info *info)
 {
@@ -173,6 +194,9 @@ static int vfio_migration_init(VFIODevice *vbasedev,
     vbasedev->vm_state = qemu_add_vm_change_state_handler(vfio_vmstate_change,
                                                           vbasedev);
 
+    vbasedev->migration_state.notify = vfio_migration_state_notifier;
+    add_migration_state_change_notifier(&vbasedev->migration_state);
+
     return 0;
 }
 
@@ -211,6 +235,11 @@ add_blocker:
 
 void vfio_migration_finalize(VFIODevice *vbasedev)
 {
+
+    if (vbasedev->migration_state.notify) {
+        remove_migration_state_change_notifier(&vbasedev->migration_state);
+    }
+
     if (vbasedev->vm_state) {
         qemu_del_vm_change_state_handler(vbasedev->vm_state);
     }
diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events
index 3d15bacd031a..69503228f20e 100644
--- a/hw/vfio/trace-events
+++ b/hw/vfio/trace-events
@@ -148,3 +148,4 @@ vfio_display_edid_write_error(void) ""
 vfio_migration_probe(char *name, uint32_t index) " (%s) Region %d"
 vfio_migration_set_state(char *name, uint32_t state) " (%s) state %d"
 vfio_vmstate_change(char *name, int running, const char *reason, uint32_t dev_state) " (%s) running %d reason %s device state %d"
+vfio_migration_state_notifier(char *name, int state) " (%s) state %d"
diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h
index 3d18eb146b33..28f55f66d019 100644
--- a/include/hw/vfio/vfio-common.h
+++ b/include/hw/vfio/vfio-common.h
@@ -123,6 +123,7 @@ typedef struct VFIODevice {
     VMChangeStateEntry *vm_state;
     uint32_t device_state;
     int vm_running;
+    Notifier migration_state;
 } VFIODevice;
 
 struct VFIODeviceOps {
-- 
2.7.0



  parent reply index

Thread overview: 74+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-03-24 21:08 [PATCH v16 QEMU 00/16] Add migration support for VFIO devices Kirti Wankhede
2020-03-24 21:08 ` [PATCH v16 QEMU 01/16] vfio: KABI for migration interface - Kernel header placeholder Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 02/16] vfio: Add function to unmap VFIO region Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 03/16] vfio: Add vfio_get_object callback to VFIODeviceOps Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 04/16] vfio: Add save and load functions for VFIO PCI devices Kirti Wankhede
2020-03-25 19:56   ` Alex Williamson
2020-03-26 17:29     ` Dr. David Alan Gilbert
2020-03-26 17:38       ` Alex Williamson
2020-05-04 23:18     ` Kirti Wankhede
2020-05-05  4:37       ` Alex Williamson
2020-05-06  6:11         ` Yan Zhao
2020-05-06 19:48           ` Kirti Wankhede
2020-05-06 20:03             ` Alex Williamson
2020-05-07  5:40               ` Kirti Wankhede
2020-05-07 18:14                 ` Alex Williamson
2020-03-26 17:46   ` Dr. David Alan Gilbert
2020-05-04 23:19     ` Kirti Wankhede
2020-04-07  4:10   ` Longpeng (Mike, Cloud Infrastructure Service Product Dept.)
2020-05-04 23:21     ` Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 05/16] vfio: Add migration region initialization and finalize function Kirti Wankhede
2020-03-26 17:52   ` Dr. David Alan Gilbert
2020-05-04 23:19     ` Kirti Wankhede
2020-05-19 19:32       ` Dr. David Alan Gilbert
2020-03-24 21:09 ` [PATCH v16 QEMU 06/16] vfio: Add VM state change handler to know state of VM Kirti Wankhede
2020-03-24 21:09 ` Kirti Wankhede [this message]
2020-04-01 11:27   ` [PATCH v16 QEMU 07/16] vfio: Add migration state change notifier Dr. David Alan Gilbert
2020-05-04 23:20     ` Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 08/16] vfio: Register SaveVMHandlers for VFIO device Kirti Wankhede
2020-03-25 21:02   ` Alex Williamson
2020-05-04 23:19     ` Kirti Wankhede
2020-05-05  4:37       ` Alex Williamson
2020-05-06  6:38         ` Yan Zhao
2020-05-06  9:58           ` Cornelia Huck
2020-05-06 16:53             ` Dr. David Alan Gilbert
2020-05-06 19:30               ` Kirti Wankhede
2020-05-07  6:37                 ` Cornelia Huck
2020-05-07 20:29                 ` Alex Williamson
2020-04-01 17:36   ` Dr. David Alan Gilbert
2020-05-04 23:20     ` Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 09/16] vfio: Add save state functions to SaveVMHandlers Kirti Wankhede
2020-03-25 22:03   ` Alex Williamson
2020-05-04 23:18     ` Kirti Wankhede
2020-05-05  4:37       ` Alex Williamson
2020-05-11  9:53         ` Kirti Wankhede
2020-05-11 15:59           ` Alex Williamson
2020-05-12  2:06           ` Yan Zhao
2020-05-09  5:31   ` Yan Zhao
2020-05-11 10:22     ` Kirti Wankhede
2020-05-12  0:50       ` Yan Zhao
2020-03-24 21:09 ` [PATCH v16 QEMU 10/16] vfio: Add load " Kirti Wankhede
2020-03-25 22:36   ` Alex Williamson
2020-04-01 18:58   ` Dr. David Alan Gilbert
2020-05-04 23:20     ` Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 11/16] iommu: add callback to get address limit IOMMU supports Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 12/16] memory: Set DIRTY_MEMORY_MIGRATION when IOMMU is enabled Kirti Wankhede
2020-04-01 19:00   ` Dr. David Alan Gilbert
2020-04-01 19:42     ` Alex Williamson
2020-03-24 21:09 ` [PATCH v16 QEMU 13/16] vfio: Add function to start and stop dirty pages tracking Kirti Wankhede
2020-03-26 19:10   ` Alex Williamson
2020-05-04 23:20     ` Kirti Wankhede
2020-04-01 19:03   ` Dr. David Alan Gilbert
2020-05-04 23:21     ` Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 14/16] vfio: Add vfio_listener_log_sync to mark dirty pages Kirti Wankhede
2020-03-25  2:19   ` Yan Zhao
2020-03-26 19:46   ` Alex Williamson
2020-04-01 19:08     ` Dr. David Alan Gilbert
2020-04-01  5:50   ` Yan Zhao
2020-04-03 20:11     ` Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 15/16] vfio: Add ioctl to get dirty pages bitmap during dma unmap Kirti Wankhede
2020-03-24 21:09 ` [PATCH v16 QEMU 16/16] vfio: Make vfio-pci device migration capable Kirti Wankhede
2020-03-24 23:36 ` [PATCH v16 QEMU 00/16] Add migration support for VFIO devices no-reply
2020-03-31 18:34 ` Alex Williamson
2020-04-01  6:41   ` Yan Zhao
2020-04-01 18:34     ` Alex Williamson

Reply instructions:

You may reply publicly to this message via plain-text email
using any one of the following methods:

* Save the following mbox file, import it into your mail client,
  and reply-to-all from there: mbox

  Avoid top-posting and favor interleaved quoting:
  https://en.wikipedia.org/wiki/Posting_style#Interleaved_style

* Reply using the --to, --cc, and --in-reply-to
  switches of git-send-email(1):

  git send-email \
    --in-reply-to=1585084154-29461-8-git-send-email-kwankhede@nvidia.com \
    --to=kwankhede@nvidia.com \
    --cc=Ken.Xue@amd.com \
    --cc=Zhengxiao.zx@Alibaba-inc.com \
    --cc=aik@ozlabs.ru \
    --cc=alex.williamson@redhat.com \
    --cc=changpeng.liu@intel.com \
    --cc=cjia@nvidia.com \
    --cc=cohuck@redhat.com \
    --cc=dgilbert@redhat.com \
    --cc=eauger@redhat.com \
    --cc=eskultet@redhat.com \
    --cc=felipe@nutanix.com \
    --cc=jonathan.davies@nutanix.com \
    --cc=kevin.tian@intel.com \
    --cc=mlevitsk@redhat.com \
    --cc=pasic@linux.ibm.com \
    --cc=qemu-devel@nongnu.org \
    --cc=shuangtai.tst@alibaba-inc.com \
    --cc=yan.y.zhao@intel.com \
    --cc=yi.l.liu@intel.com \
    --cc=zhi.a.wang@intel.com \
    --cc=ziye.yang@intel.com \
    /path/to/YOUR_REPLY

  https://kernel.org/pub/software/scm/git/docs/git-send-email.html

* If your mail client supports setting the In-Reply-To header
  via mailto: links, try the mailto: link

QEMU-Devel Archive on lore.kernel.org

Archives are clonable:
	git clone --mirror https://lore.kernel.org/qemu-devel/0 qemu-devel/git/0.git
	git clone --mirror https://lore.kernel.org/qemu-devel/1 qemu-devel/git/1.git

	# If you have public-inbox 1.1+ installed, you may
	# initialize and index your mirror using the following commands:
	public-inbox-init -V2 qemu-devel qemu-devel/ https://lore.kernel.org/qemu-devel \
		qemu-devel@nongnu.org
	public-inbox-index qemu-devel

Example config snippet for mirrors

Newsgroup available over NNTP:
	nntp://nntp.lore.kernel.org/org.nongnu.qemu-devel


AGPL code for this site: git clone https://public-inbox.org/public-inbox.git