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Thu, 20 Jun 2019 14:40:37 +0000 Received: from kwankhede-dev.nvidia.com (172.20.13.39) by HQMAIL.nvidia.com (172.18.146.12) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Thu, 20 Jun 2019 14:40:31 +0000 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Thu, 20 Jun 2019 07:40:37 -0700 From: Kirti Wankhede To: , Date: Thu, 20 Jun 2019 20:07:34 +0530 Message-ID: <1561041461-22326-7-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1561041461-22326-1-git-send-email-kwankhede@nvidia.com> References: <1561041461-22326-1-git-send-email-kwankhede@nvidia.com> X-NVConfidentiality: public MIME-Version: 1.0 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=nvidia.com; s=n1; t=1561041637; bh=lBhaXThY2cPoc8ul1w3nQGKRFmg6IBN6bpYoTDrFtTE=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=Yqb4z967z8eaCKiK5yVu2pIZwmPoANmrsU0R3/ErqOosLfWdFewX510sgQpw0AF4R fz2NQK9z18FmWb3M+C1HUZJBtvm8nVP3UGrEbh8IwHRxKi7szt8D5s5akcp9+VnrX/ EiC1/n8QIT1tMM9vBliwGkXjAAYFMUY7AvjVozjzDCnfrqUiH1J1+biJ5tFU2Mwq42 cTISqzixXSaOpQvK5TLFRaEnrEsAUJlmy/5slrjVqJ6BYWfBnkNoxjEt/hHTbJ5X73 6yqvjL2fTvZyNm0h5xzqHaQ0N95ijyuSeIt950P+zyKjVw18danBhl57NMJ4cdkBGP QOk3B8OipHIkw== X-detected-operating-system: by eggs.gnu.org: Windows 7 or 8 X-Received-From: 216.228.121.143 Subject: [Qemu-devel] [PATCH v4 06/13] vfio: Add migration state change notifier X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Kirti Wankhede , 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, yulei.zhang@intel.com, eauger@redhat.com, felipe@nutanix.com, jonathan.davies@nutanix.com, changpeng.liu@intel.com, Ken.Xue@amd.com Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Added migration state change notifier to get notification on migration state change. These states are translated to VFIO device state and conveyed to ve= ndor driver. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia --- hw/vfio/migration.c | 49 +++++++++++++++++++++++++++++++++++++++= ++++ include/hw/vfio/vfio-common.h | 1 + 2 files changed, 50 insertions(+) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 15af218c23d1..7f9858e6c995 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -112,6 +112,48 @@ static void vfio_vmstate_change(void *opaque, int runn= ing, RunState state) vbasedev->vm_running =3D running; } =20 +static void vfio_migration_state_notifier(Notifier *notifier, void *data) +{ + MigrationState *s =3D data; + VFIODevice *vbasedev =3D container_of(notifier, VFIODevice, migration_= state); + int ret; + + switch (s->state) { + case MIGRATION_STATUS_ACTIVE: + if (vbasedev->device_state & VFIO_DEVICE_STATE_RUNNING) { + if (vbasedev->vm_running) { + ret =3D vfio_migration_set_state(vbasedev, + VFIO_DEVICE_STATE_RUNNING | VFIO_DEVICE_STATE_SA= VING); + if (ret) { + error_report("Failed to set state RUNNING and SAVING"); + } + } else { + ret =3D vfio_migration_set_state(vbasedev, + VFIO_DEVICE_STATE_SAVING); + if (ret) { + error_report("Failed to set state STOP and SAVING"); + } + } + } else { + ret =3D vfio_migration_set_state(vbasedev, + VFIO_DEVICE_STATE_RESUMING); + if (ret) { + error_report("Failed to set state RESUMING"); + } + } + return; + + case MIGRATION_STATUS_CANCELLING: + case MIGRATION_STATUS_CANCELLED: + case MIGRATION_STATUS_FAILED: + ret =3D vfio_migration_set_state(vbasedev, VFIO_DEVICE_STATE_RUNNI= NG); + if (ret) { + error_report("Failed to set state RUNNING"); + } + return; + } +} + static int vfio_migration_init(VFIODevice *vbasedev, struct vfio_region_info *info) { @@ -131,6 +173,9 @@ static int vfio_migration_init(VFIODevice *vbasedev, vbasedev->vm_state =3D qemu_add_vm_change_state_handler(vfio_vmstate_c= hange, vbasedev); =20 + vbasedev->migration_state.notify =3D vfio_migration_state_notifier; + add_migration_state_change_notifier(&vbasedev->migration_state); + return 0; } =20 @@ -167,6 +212,10 @@ void vfio_migration_finalize(VFIODevice *vbasedev) return; } =20 + 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/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index f2392e97fa57..1d26e6be8d48 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -133,6 +133,7 @@ typedef struct VFIODevice { uint32_t device_state; VMChangeStateEntry *vm_state; int vm_running; + Notifier migration_state; } VFIODevice; =20 struct VFIODeviceOps { --=20 2.7.0