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c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1745570846; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=EAVkTegx08KSi2/p/LIgIi/c/VdoNv9CjIxpyafvHx4=; b=NWMaigpNykKV38X5VNvNfmf2yninT8onOZhyEDQyaQA37pKsF4dqaXell43A7tDAdqGo97 88rM3qzgbfKzRQbdO3KT4Bfl7BiwmiGht/ajIDPaIAlYJSPB6bYP6UEf5Wy3u2yN7jwHFI alS/7J0e/rooI+XoIWeIKtXk/nyEEXk= X-MC-Unique: -Cl4mEy2PgKlRjqE0OHQ_w-1 X-Mimecast-MFC-AGG-ID: -Cl4mEy2PgKlRjqE0OHQ_w_1745570840 From: =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= To: qemu-devel@nongnu.org Cc: Alex Williamson , =?UTF-8?q?C=C3=A9dric=20Le=20Goater?= , Kirti Wankhede , Avihai Horon , Prasad Pandit , John Levon Subject: [PULL 07/50] vfio: Introduce a new header file for external migration services Date: Fri, 25 Apr 2025 10:46:00 +0200 Message-ID: <20250425084644.102196-8-clg@redhat.com> In-Reply-To: <20250425084644.102196-1-clg@redhat.com> References: <20250425084644.102196-1-clg@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.4.1 on 10.30.177.4 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=170.10.129.124; envelope-from=clg@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -28 X-Spam_score: -2.9 X-Spam_bar: -- X-Spam_report: (-2.9 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.84, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_AU=-0.1, DKIM_VALID_EF=-0.1, RCVD_IN_DNSWL_NONE=-0.0001, RCVD_IN_MSPIKE_H5=0.001, RCVD_IN_MSPIKE_WL=0.001, RCVD_IN_VALIDITY_CERTIFIED_BLOCKED=0.001, RCVD_IN_VALIDITY_RPBL_BLOCKED=0.001, SPF_HELO_NONE=0.001, SPF_PASS=-0.001 autolearn=ham autolearn_force=no X-Spam_action: no action X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1745571034234019100 The migration core subsystem makes use of the VFIO migration API to collect statistics on the number of bytes transferred. These services are declared in "hw/vfio/vfio-common.h" which also contains VFIO internal declarations. Move the migration declarations into a new header file "hw/vfio/vfio-migration.h" to reduce the exposure of VFIO internals. While at it, use a 'vfio_migration_' prefix for these services. To be noted, vfio_migration_add_bytes_transferred() is a VFIO migration internal service which we will be moved in the subsequent patches. Cc: Kirti Wankhede Cc: Avihai Horon Reviewed-by: Prasad Pandit Reviewed-by: John Levon Reviewed-by: Avihai Horon Link: https://lore.kernel.org/qemu-devel/20250326075122.1299361-4-clg@redha= t.com Signed-off-by: C=C3=A9dric Le Goater --- include/hw/vfio/vfio-common.h | 5 +---- include/hw/vfio/vfio-migration.h | 16 ++++++++++++++++ hw/vfio/migration-multifd.c | 5 +++-- hw/vfio/migration.c | 11 ++++++----- migration/target.c | 8 ++++---- 5 files changed, 30 insertions(+), 15 deletions(-) create mode 100644 include/hw/vfio/vfio-migration.h diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index f58cae9e55c9a2816358160984fab18324fba0cf..7a551bb2300f047b98c90a72ea0= b21356ecb668a 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -290,13 +290,10 @@ extern VFIODeviceList vfio_device_list; extern const MemoryListener vfio_memory_listener; extern int vfio_kvm_device_fd; =20 -bool vfio_mig_active(void); int vfio_block_multiple_devices_migration(VFIODevice *vbasedev, Error **er= rp); void vfio_unblock_multiple_devices_migration(void); bool vfio_viommu_preset(VFIODevice *vbasedev); -int64_t vfio_mig_bytes_transferred(void); -void vfio_mig_reset_bytes_transferred(void); -void vfio_mig_add_bytes_transferred(unsigned long val); +void vfio_migration_add_bytes_transferred(unsigned long val); bool vfio_device_state_is_running(VFIODevice *vbasedev); bool vfio_device_state_is_precopy(VFIODevice *vbasedev); =20 diff --git a/include/hw/vfio/vfio-migration.h b/include/hw/vfio/vfio-migrat= ion.h new file mode 100644 index 0000000000000000000000000000000000000000..0d4ecd33d5d8c214bb77e0652b4= 405b6e43bcafa --- /dev/null +++ b/include/hw/vfio/vfio-migration.h @@ -0,0 +1,16 @@ +/* + * VFIO migration interface + * + * Copyright Red Hat, Inc. 2025 + * + * SPDX-License-Identifier: GPL-2.0-or-later + */ + +#ifndef HW_VFIO_VFIO_MIGRATION_H +#define HW_VFIO_VFIO_MIGRATION_H + +bool vfio_migration_active(void); +int64_t vfio_migration_bytes_transferred(void); +void vfio_migration_reset_bytes_transferred(void); + +#endif /* HW_VFIO_VFIO_MIGRATION_H */ diff --git a/hw/vfio/migration-multifd.c b/hw/vfio/migration-multifd.c index 378f6f3bf01f6a4155fb424f8028cb5380f27f02..09aa57f5f890f37f7e36c857fd8= 13f55b1da2fce 100644 --- a/hw/vfio/migration-multifd.c +++ b/hw/vfio/migration-multifd.c @@ -11,6 +11,7 @@ =20 #include "qemu/osdep.h" #include "hw/vfio/vfio-common.h" +#include "hw/vfio/vfio-migration.h" #include "migration/misc.h" #include "qapi/error.h" #include "qemu/bswap.h" @@ -575,7 +576,7 @@ vfio_save_complete_precopy_thread_config_state(VFIODevi= ce *vbasedev, return false; } =20 - vfio_mig_add_bytes_transferred(packet_len); + vfio_migration_add_bytes_transferred(packet_len); =20 return true; } @@ -645,7 +646,7 @@ vfio_multifd_save_complete_precopy_thread(SaveLiveCompl= etePrecopyThreadData *d, goto thread_exit; } =20 - vfio_mig_add_bytes_transferred(packet_size); + vfio_migration_add_bytes_transferred(packet_size); } =20 if (!vfio_save_complete_precopy_thread_config_state(vbasedev, diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 8bf65b8e11094b8363692dba3084b762362c7dd6..582d65932a6c590eaecd8bf0b76= 5f27d93896c72 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -17,6 +17,7 @@ =20 #include "system/runstate.h" #include "hw/vfio/vfio-common.h" +#include "hw/vfio/vfio-migration.h" #include "migration/misc.h" #include "migration/savevm.h" #include "migration/vmstate.h" @@ -373,7 +374,7 @@ static ssize_t vfio_save_block(QEMUFile *f, VFIOMigrati= on *migration) qemu_put_be64(f, VFIO_MIG_FLAG_DEV_DATA_STATE); qemu_put_be64(f, data_size); qemu_put_buffer(f, migration->data_buffer, data_size); - vfio_mig_add_bytes_transferred(data_size); + vfio_migration_add_bytes_transferred(data_size); =20 trace_vfio_save_block(migration->vbasedev->name, data_size); =20 @@ -1047,22 +1048,22 @@ static int vfio_block_migration(VFIODevice *vbasede= v, Error *err, Error **errp) =20 /* ---------------------------------------------------------------------- = */ =20 -int64_t vfio_mig_bytes_transferred(void) +int64_t vfio_migration_bytes_transferred(void) { return MIN(qatomic_read(&bytes_transferred), INT64_MAX); } =20 -void vfio_mig_reset_bytes_transferred(void) +void vfio_migration_reset_bytes_transferred(void) { qatomic_set(&bytes_transferred, 0); } =20 -void vfio_mig_add_bytes_transferred(unsigned long val) +void vfio_migration_add_bytes_transferred(unsigned long val) { qatomic_add(&bytes_transferred, val); } =20 -bool vfio_mig_active(void) +bool vfio_migration_active(void) { VFIODevice *vbasedev; =20 diff --git a/migration/target.c b/migration/target.c index f5d8cfe7c2a3473f4bd3f5068145598c60973c58..12fd399f0c521c5c28535b58f24= feab6845947fd 100644 --- a/migration/target.c +++ b/migration/target.c @@ -11,21 +11,21 @@ #include CONFIG_DEVICES =20 #ifdef CONFIG_VFIO -#include "hw/vfio/vfio-common.h" +#include "hw/vfio/vfio-migration.h" #endif =20 #ifdef CONFIG_VFIO void migration_populate_vfio_info(MigrationInfo *info) { - if (vfio_mig_active()) { + if (vfio_migration_active()) { info->vfio =3D g_malloc0(sizeof(*info->vfio)); - info->vfio->transferred =3D vfio_mig_bytes_transferred(); + info->vfio->transferred =3D vfio_migration_bytes_transferred(); } } =20 void migration_reset_vfio_bytes_transferred(void) { - vfio_mig_reset_bytes_transferred(); + vfio_migration_reset_bytes_transferred(); } #else void migration_populate_vfio_info(MigrationInfo *info) --=20 2.49.0