From patchwork Mon Sep 11 07:49:59 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?C=C3=A9dric_Le_Goater?= X-Patchwork-Id: 13378939 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 81659EE57DF for ; Mon, 11 Sep 2023 07:52:29 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1qfbgx-00047b-IC; Mon, 11 Sep 2023 03:50:43 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qfbgt-00042W-1Y for qemu-devel@nongnu.org; Mon, 11 Sep 2023 03:50:39 -0400 Received: from gandalf.ozlabs.org ([150.107.74.76]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1qfbgf-00081n-Dx for qemu-devel@nongnu.org; Mon, 11 Sep 2023 03:50:38 -0400 Received: from gandalf.ozlabs.org (mail.ozlabs.org [IPv6:2404:9400:2221:ea00::3]) by gandalf.ozlabs.org (Postfix) with ESMTP id 4Rkf5V51qWz4xFQ; Mon, 11 Sep 2023 17:50:22 +1000 (AEST) Received: from authenticated.ozlabs.org (localhost [127.0.0.1]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mail.ozlabs.org (Postfix) with ESMTPSA id 4Rkf5S4sf6z4x5q; Mon, 11 Sep 2023 17:50:20 +1000 (AEST) From: =?utf-8?q?C=C3=A9dric_Le_Goater?= To: qemu-devel@nongnu.org Cc: Alex Williamson , Joao Martins , Avihai Horon , =?utf-8?q?C=C3=A9dric_Le_Goater?= , YangHang Liu Subject: [PULL 04/13] vfio/migration: Refactor PRE_COPY and RUNNING state checks Date: Mon, 11 Sep 2023 09:49:59 +0200 Message-ID: <20230911075008.462712-5-clg@redhat.com> X-Mailer: git-send-email 2.41.0 In-Reply-To: <20230911075008.462712-1-clg@redhat.com> References: <20230911075008.462712-1-clg@redhat.com> MIME-Version: 1.0 Received-SPF: pass client-ip=150.107.74.76; envelope-from=SRS0=GLJ6=E3=redhat.com=clg@ozlabs.org; helo=gandalf.ozlabs.org X-Spam_score_int: -16 X-Spam_score: -1.7 X-Spam_bar: - X-Spam_report: (-1.7 / 5.0 requ) BAYES_00=-1.9, HEADER_FROM_DIFFERENT_DOMAINS=0.249, SPF_HELO_PASS=-0.001, SPF_PASS=-0.001 autolearn=no 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+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Joao Martins Move the PRE_COPY and RUNNING state checks to helper functions. This is in preparation for adding P2P VFIO migration support, where these helpers will also test for PRE_COPY_P2P and RUNNING_P2P states. Signed-off-by: Joao Martins Signed-off-by: Avihai Horon Reviewed-by: Cédric Le Goater Tested-by: YangHang Liu Signed-off-by: Cédric Le Goater --- include/hw/vfio/vfio-common.h | 2 ++ hw/vfio/common.c | 22 ++++++++++++++++++---- hw/vfio/migration.c | 10 ++++------ 3 files changed, 24 insertions(+), 10 deletions(-) diff --git a/include/hw/vfio/vfio-common.h b/include/hw/vfio/vfio-common.h index da43d273524ec441c13194b363008ab27a72839d..e9b895459534d7873445f865ef0e5f8f5c53882a 100644 --- a/include/hw/vfio/vfio-common.h +++ b/include/hw/vfio/vfio-common.h @@ -230,6 +230,8 @@ void vfio_unblock_multiple_devices_migration(void); bool vfio_viommu_preset(VFIODevice *vbasedev); int64_t vfio_mig_bytes_transferred(void); void vfio_reset_bytes_transferred(void); +bool vfio_device_state_is_running(VFIODevice *vbasedev); +bool vfio_device_state_is_precopy(VFIODevice *vbasedev); #ifdef CONFIG_LINUX int vfio_get_region_info(VFIODevice *vbasedev, int index, diff --git a/hw/vfio/common.c b/hw/vfio/common.c index 9aac21abb76ef7d1abb54428e9a173a33ce16073..16cf79a76c845d8eb19498e8c6bf1f3b2b8d2fd8 100644 --- a/hw/vfio/common.c +++ b/hw/vfio/common.c @@ -437,6 +437,20 @@ static void vfio_set_migration_error(int err) } } +bool vfio_device_state_is_running(VFIODevice *vbasedev) +{ + VFIOMigration *migration = vbasedev->migration; + + return migration->device_state == VFIO_DEVICE_STATE_RUNNING; +} + +bool vfio_device_state_is_precopy(VFIODevice *vbasedev) +{ + VFIOMigration *migration = vbasedev->migration; + + return migration->device_state == VFIO_DEVICE_STATE_PRE_COPY; +} + static bool vfio_devices_all_dirty_tracking(VFIOContainer *container) { VFIOGroup *group; @@ -457,8 +471,8 @@ static bool vfio_devices_all_dirty_tracking(VFIOContainer *container) } if (vbasedev->pre_copy_dirty_page_tracking == ON_OFF_AUTO_OFF && - (migration->device_state == VFIO_DEVICE_STATE_RUNNING || - migration->device_state == VFIO_DEVICE_STATE_PRE_COPY)) { + (vfio_device_state_is_running(vbasedev) || + vfio_device_state_is_precopy(vbasedev))) { return false; } } @@ -503,8 +517,8 @@ static bool vfio_devices_all_running_and_mig_active(VFIOContainer *container) return false; } - if (migration->device_state == VFIO_DEVICE_STATE_RUNNING || - migration->device_state == VFIO_DEVICE_STATE_PRE_COPY) { + if (vfio_device_state_is_running(vbasedev) || + vfio_device_state_is_precopy(vbasedev)) { continue; } else { return false; diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 8acd182a8bf3fcd0eb0368816ff3093242b103f5..48f9c23cbe3ac720ef252d699636e4a572bec762 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -411,7 +411,7 @@ static void vfio_state_pending_estimate(void *opaque, uint64_t *must_precopy, VFIODevice *vbasedev = opaque; VFIOMigration *migration = vbasedev->migration; - if (migration->device_state != VFIO_DEVICE_STATE_PRE_COPY) { + if (!vfio_device_state_is_precopy(vbasedev)) { return; } @@ -444,7 +444,7 @@ static void vfio_state_pending_exact(void *opaque, uint64_t *must_precopy, vfio_query_stop_copy_size(vbasedev, &stop_copy_size); *must_precopy += stop_copy_size; - if (migration->device_state == VFIO_DEVICE_STATE_PRE_COPY) { + if (vfio_device_state_is_precopy(vbasedev)) { vfio_query_precopy_size(migration); *must_precopy += @@ -459,9 +459,8 @@ static void vfio_state_pending_exact(void *opaque, uint64_t *must_precopy, static bool vfio_is_active_iterate(void *opaque) { VFIODevice *vbasedev = opaque; - VFIOMigration *migration = vbasedev->migration; - return migration->device_state == VFIO_DEVICE_STATE_PRE_COPY; + return vfio_device_state_is_precopy(vbasedev); } static int vfio_save_iterate(QEMUFile *f, void *opaque) @@ -656,7 +655,6 @@ static const SaveVMHandlers savevm_vfio_handlers = { static void vfio_vmstate_change(void *opaque, bool running, RunState state) { VFIODevice *vbasedev = opaque; - VFIOMigration *migration = vbasedev->migration; enum vfio_device_mig_state new_state; int ret; @@ -664,7 +662,7 @@ static void vfio_vmstate_change(void *opaque, bool running, RunState state) new_state = VFIO_DEVICE_STATE_RUNNING; } else { new_state = - (migration->device_state == VFIO_DEVICE_STATE_PRE_COPY && + (vfio_device_state_is_precopy(vbasedev) && (state == RUN_STATE_FINISH_MIGRATE || state == RUN_STATE_PAUSED)) ? VFIO_DEVICE_STATE_STOP_COPY : VFIO_DEVICE_STATE_STOP;