From nobody Mon Feb 9 12:09:38 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=nvidia.com ARC-Seal: i=1; a=rsa-sha256; t=1592686696; cv=none; d=zohomail.com; s=zohoarc; b=Mfz6/8O4QR99yRbLmfT+NxHCLNv8QVNWgxmOk1M3i+MEwiGarz63aqg3Yx/hw8cDBiX+w0dk+NcH4oGMt7OzfDv3s0yT4PIx30HwuGSwL7ASWSTE8ule5UWYyAu/dU5uql4xy7A+y1vFoYtv284Nc8GWNkZqCMTsSaX3/2V/ouM= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1592686696; h=Content-Type:Cc:Date:From:In-Reply-To:List-Subscribe:List-Post:List-Id:List-Archive:List-Help:List-Unsubscribe:MIME-Version:Message-ID:References:Sender:Subject:To; bh=T6Xexq3AvQOPVom49r7gvm/sws73zJekamGm5C/7nos=; b=cWdP5CJ+QEUL+1RhSGcww/8getObK0ImC8gbEw8S6/I5LHniTyy292S8iWmaBCqdyxSPmzn7MggknIrK2KH+iCTxYyWOApvG5YfTjgojlhZ0Vh7Hdort53Lg2hW2BVAEKsio+VKCDSV9qHzp74Gmraa8oa5Y1YB88Zk4f+z2u7o= ARC-Authentication-Results: i=1; mx.zohomail.com; dkim=fail; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail header.from= (p=none dis=none) header.from= Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1592686696557331.6467845166719; Sat, 20 Jun 2020 13:58:16 -0700 (PDT) Received: from localhost ([::1]:48202 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1jmkZ5-00013S-Bs for importer@patchew.org; Sat, 20 Jun 2020 16:58:15 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:51488) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jmkWE-0004K2-FX for qemu-devel@nongnu.org; Sat, 20 Jun 2020 16:55:18 -0400 Received: from hqnvemgate26.nvidia.com ([216.228.121.65]:1098) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1jmkWC-0000Eo-0n for qemu-devel@nongnu.org; Sat, 20 Jun 2020 16:55:18 -0400 Received: from hqpgpgate101.nvidia.com (Not Verified[216.228.121.13]) by hqnvemgate26.nvidia.com (using TLS: TLSv1.2, DES-CBC3-SHA) id ; Sat, 20 Jun 2020 13:55:02 -0700 Received: from hqmail.nvidia.com ([172.20.161.6]) by hqpgpgate101.nvidia.com (PGP Universal service); Sat, 20 Jun 2020 13:55:14 -0700 Received: from HQMAIL107.nvidia.com (172.20.187.13) by HQMAIL111.nvidia.com (172.20.187.18) with Microsoft SMTP Server (TLS) id 15.0.1473.3; Sat, 20 Jun 2020 20:55:08 +0000 Received: from kwankhede-dev.nvidia.com (172.20.13.39) by HQMAIL107.nvidia.com (172.20.187.13) with Microsoft SMTP Server (TLS) id 15.0.1473.3 via Frontend Transport; Sat, 20 Jun 2020 20:55:00 +0000 X-PGP-Universal: processed; by hqpgpgate101.nvidia.com on Sat, 20 Jun 2020 13:55:14 -0700 From: Kirti Wankhede To: , Subject: [PATCH QEMU v25 04/17] vfio: Add migration region initialization and finalize function Date: Sun, 21 Jun 2020 01:51:13 +0530 Message-ID: <1592684486-18511-5-git-send-email-kwankhede@nvidia.com> X-Mailer: git-send-email 2.7.0 In-Reply-To: <1592684486-18511-1-git-send-email-kwankhede@nvidia.com> References: <1592684486-18511-1-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=1592686502; bh=T6Xexq3AvQOPVom49r7gvm/sws73zJekamGm5C/7nos=; h=X-PGP-Universal:From:To:CC:Subject:Date:Message-ID:X-Mailer: In-Reply-To:References:X-NVConfidentiality:MIME-Version: Content-Type; b=rLzChjizMAxZtFAZRaDoHRGDiGYV5VTcrn+i/XUH2NSbn94FVf79bESdBXYwBt6c+ Kek9pqXg6DFs+4BEJ8lkVPKUvcYOJsRjZbbU8GBGjp3ru+8m2bvAYXegEXS3HKrlQd UUp0gVS3H6a6bnKX/jI6wZyJKfurJx65fdxfu+c3Vh9PKHPbqHddrmHXurCNxa6vSD PYaq3W7u3znEaP0pbX4tE2AaKgjHsvQXufqCs40ExaU7KBvVQBvvWyW9j+6OiufQvO 59X+cJc5UCeduhtSP1ki84h6c32d55iZ/Ur+AnwN1QJITS23/fl+MhZutzKl8fETGk rfhuuqM+CIt7Q== Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=216.228.121.65; envelope-from=kwankhede@nvidia.com; helo=hqnvemgate26.nvidia.com X-detected-operating-system: by eggs.gnu.org: First seen = 2020/06/20 16:54:48 X-ACL-Warn: Detected OS = Windows 7 or 8 [fuzzy] X-Spam_score_int: -80 X-Spam_score: -8.1 X-Spam_bar: -------- X-Spam_report: (-8.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-1, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_HI=-5, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, URIBL_BLOCKED=0.001 autolearn=_AUTOLEARN X-Spam_action: no action 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: cohuck@redhat.com, aik@ozlabs.ru, Zhengxiao.zx@Alibaba-inc.com, shuangtai.tst@alibaba-inc.com, qemu-devel@nongnu.org, peterx@redhat.com, Kirti Wankhede , eauger@redhat.com, yi.l.liu@intel.com, quintela@redhat.com, ziye.yang@intel.com, armbru@redhat.com, mlevitsk@redhat.com, pasic@linux.ibm.com, felipe@nutanix.com, zhi.a.wang@intel.com, kevin.tian@intel.com, yan.y.zhao@intel.com, dgilbert@redhat.com, changpeng.liu@intel.com, eskultet@redhat.com, Ken.Xue@amd.com, jonathan.davies@nutanix.com, pbonzini@redhat.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" Whether the VFIO device supports migration or not is decided based of migration region query. If migration region query is successful and migrati= on region initialization is successful then migration is supported else migration is blocked. Signed-off-by: Kirti Wankhede Reviewed-by: Neo Jia Acked-by: Dr. David Alan Gilbert --- hw/vfio/Makefile.objs | 2 +- hw/vfio/migration.c | 142 ++++++++++++++++++++++++++++++++++++++= ++++ hw/vfio/trace-events | 3 + include/hw/vfio/vfio-common.h | 9 +++ 4 files changed, 155 insertions(+), 1 deletion(-) create mode 100644 hw/vfio/migration.c diff --git a/hw/vfio/Makefile.objs b/hw/vfio/Makefile.objs index 9bb1c09e8477..8b296c889ed9 100644 --- a/hw/vfio/Makefile.objs +++ b/hw/vfio/Makefile.objs @@ -1,4 +1,4 @@ -obj-y +=3D common.o spapr.o +obj-y +=3D common.o spapr.o migration.o obj-$(CONFIG_VFIO_PCI) +=3D pci.o pci-quirks.o display.o obj-$(CONFIG_VFIO_CCW) +=3D ccw.o obj-$(CONFIG_VFIO_PLATFORM) +=3D platform.o diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c new file mode 100644 index 000000000000..48ac385d80a7 --- /dev/null +++ b/hw/vfio/migration.c @@ -0,0 +1,142 @@ +/* + * Migration support for VFIO devices + * + * Copyright NVIDIA, Inc. 2020 + * + * This work is licensed under the terms of the GNU GPL, version 2. See + * the COPYING file in the top-level directory. + */ + +#include "qemu/osdep.h" +#include + +#include "hw/vfio/vfio-common.h" +#include "cpu.h" +#include "migration/migration.h" +#include "migration/qemu-file.h" +#include "migration/register.h" +#include "migration/blocker.h" +#include "migration/misc.h" +#include "qapi/error.h" +#include "exec/ramlist.h" +#include "exec/ram_addr.h" +#include "pci.h" +#include "trace.h" + +static void vfio_migration_region_exit(VFIODevice *vbasedev) +{ + VFIOMigration *migration =3D vbasedev->migration; + + if (!migration) { + return; + } + + if (migration->region.size) { + vfio_region_exit(&migration->region); + vfio_region_finalize(&migration->region); + } +} + +static int vfio_migration_region_init(VFIODevice *vbasedev, int index) +{ + VFIOMigration *migration =3D vbasedev->migration; + Object *obj =3D NULL; + int ret =3D -EINVAL; + + if (!vbasedev->ops->vfio_get_object) { + return ret; + } + + obj =3D vbasedev->ops->vfio_get_object(vbasedev); + if (!obj) { + return ret; + } + + ret =3D vfio_region_setup(obj, vbasedev, &migration->region, index, + "migration"); + if (ret) { + error_report("%s: Failed to setup VFIO migration region %d: %s", + vbasedev->name, index, strerror(-ret)); + goto err; + } + + if (!migration->region.size) { + ret =3D -EINVAL; + error_report("%s: Invalid region size of VFIO migration region %d:= %s", + vbasedev->name, index, strerror(-ret)); + goto err; + } + + return 0; + +err: + vfio_migration_region_exit(vbasedev); + return ret; +} + +static int vfio_migration_init(VFIODevice *vbasedev, + struct vfio_region_info *info) +{ + int ret; + + vbasedev->migration =3D g_new0(VFIOMigration, 1); + + ret =3D vfio_migration_region_init(vbasedev, info->index); + if (ret) { + error_report("%s: Failed to initialise migration region", + vbasedev->name); + g_free(vbasedev->migration); + vbasedev->migration =3D NULL; + } + + return ret; +} + +/* ---------------------------------------------------------------------- = */ + +int vfio_migration_probe(VFIODevice *vbasedev, Error **errp) +{ + struct vfio_region_info *info; + Error *local_err =3D NULL; + int ret; + + ret =3D vfio_get_dev_region_info(vbasedev, VFIO_REGION_TYPE_MIGRATION, + VFIO_REGION_SUBTYPE_MIGRATION, &info); + if (ret) { + goto add_blocker; + } + + ret =3D vfio_migration_init(vbasedev, info); + if (ret) { + goto add_blocker; + } + + trace_vfio_migration_probe(vbasedev->name, info->index); + g_free(info); + return 0; + +add_blocker: + error_setg(&vbasedev->migration_blocker, + "VFIO device doesn't support migration"); + g_free(info); + + ret =3D migrate_add_blocker(vbasedev->migration_blocker, &local_err); + if (local_err) { + error_propagate(errp, local_err); + error_free(vbasedev->migration_blocker); + vbasedev->migration_blocker =3D NULL; + } + return ret; +} + +void vfio_migration_finalize(VFIODevice *vbasedev) +{ + if (vbasedev->migration_blocker) { + migrate_del_blocker(vbasedev->migration_blocker); + error_free(vbasedev->migration_blocker); + vbasedev->migration_blocker =3D NULL; + } + + vfio_migration_region_exit(vbasedev); + g_free(vbasedev->migration); +} diff --git a/hw/vfio/trace-events b/hw/vfio/trace-events index 8cdc27946cb8..fd034ac53684 100644 --- a/hw/vfio/trace-events +++ b/hw/vfio/trace-events @@ -143,3 +143,6 @@ vfio_display_edid_link_up(void) "" vfio_display_edid_link_down(void) "" vfio_display_edid_update(uint32_t prefx, uint32_t prefy) "%ux%u" vfio_display_edid_write_error(void) "" + +# migration.c +vfio_migration_probe(const char *name, uint32_t index) " (%s) Region %d" diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index d69a7f3ae31e..d4b268641173 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -57,6 +57,10 @@ typedef struct VFIORegion { uint8_t nr; /* cache the region number for debug */ } VFIORegion; =20 +typedef struct VFIOMigration { + VFIORegion region; +} VFIOMigration; + typedef struct VFIOAddressSpace { AddressSpace *as; QLIST_HEAD(, VFIOContainer) containers; @@ -113,6 +117,8 @@ typedef struct VFIODevice { unsigned int num_irqs; unsigned int num_regions; unsigned int flags; + VFIOMigration *migration; + Error *migration_blocker; } VFIODevice; =20 struct VFIODeviceOps { @@ -204,4 +210,7 @@ int vfio_spapr_create_window(VFIOContainer *container, int vfio_spapr_remove_window(VFIOContainer *container, hwaddr offset_within_address_space); =20 +int vfio_migration_probe(VFIODevice *vbasedev, Error **errp); +void vfio_migration_finalize(VFIODevice *vbasedev); + #endif /* HW_VFIO_VFIO_COMMON_H */ --=20 2.7.0