From nobody Tue May 13 17:30:39 2025 Delivered-To: importer2@patchew.org Authentication-Results: mx.zohomail.com; dkim=pass; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer2=patchew.org@nongnu.org; dmarc=pass(p=none dis=none) header.from=redhat.com ARC-Seal: i=1; a=rsa-sha256; t=1678215250; cv=none; d=zohomail.com; s=zohoarc; b=acfddVv2KMqevxQOeHARWrxP3lsebBlOQMG07DgK+jPdUa4f6SB7SFhFO5/wcv2cBefyViwfI3paUDqpF0rJXLMSADSFG1lqUg+xi3l7uW7O6oyi87/hkiaEG9nB2GDlOGv8N39cWmTpGsFDG7ifG8L1nERe/Qm50EeoGUQ/slE= ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=zohomail.com; s=zohoarc; t=1678215250; h=Content-Type:Content-Transfer-Encoding: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=+jMYkTKJXiR7//0keeDBM6O99yCDK6KTxlStbwzTQmA=; b=jT5ekc7c770AvoGgHYVmZ5UjuyH9QFkOB8uSsI6DQmr7aR/lT7fYEox2gdD+c3aDOzv1+1KGeMBIgVcTXX9NWc/AUINT4M41/+qoLL3z6GE9z/omdzMMeMdtsahYcJfT9th7RdYXgQejgjWQ4edRe8nOfDGMcXolc1VOKiUHKlM= ARC-Authentication-Results: i=1; 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bh=+jMYkTKJXiR7//0keeDBM6O99yCDK6KTxlStbwzTQmA=; b=Gqq0fzdmOhjtyamMQ10fn86B1oXV1CUVQDEL6qrEsFI+DC+6y6+3uxN3E8riwR9ZgV+oMP jibXI6raSGpRFJhAbNxQfrTNf0Vlvh/MY7P711puHO3PyiiTa7gC6kYpHYH8NOgrytUKQH Oixn6sX2gXDFnaEsNo5vlieGWiTKDy4= X-MC-Unique: tPefz7Z1P6Wv1LDppTWMwQ-1 Subject: [PULL 14/17] vfio/migration: Query device dirty page tracking support From: Alex Williamson To: qemu-devel@nongnu.org Cc: alex.williamson@redhat.com, avihaih@nvidia.com, clg@redhat.com, joao.m.martins@oracle.com Date: Tue, 07 Mar 2023 11:53:39 -0700 Message-ID: <167821521962.619792.11433356442234308853.stgit@omen> In-Reply-To: <167821508699.619792.1719671327865445814.stgit@omen> References: <167821508699.619792.1719671327865445814.stgit@omen> User-Agent: StGit/1.5.dev2+g9ce680a52bd9 MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: quoted-printable X-Scanned-By: MIMEDefang 3.1 on 10.11.54.5 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+importer2=patchew.org@nongnu.org; helo=lists.gnu.org; Received-SPF: pass client-ip=170.10.129.124; envelope-from=alex.williamson@redhat.com; helo=us-smtp-delivery-124.mimecast.com X-Spam_score_int: -20 X-Spam_score: -2.1 X-Spam_bar: -- X-Spam_report: (-2.1 / 5.0 requ) BAYES_00=-1.9, DKIMWL_WL_HIGH=-0.001, 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_H2=-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+importer2=patchew.org@nongnu.org Sender: qemu-devel-bounces+importer2=patchew.org@nongnu.org X-ZohoMail-DKIM: pass (identity @redhat.com) X-ZM-MESSAGEID: 1678215251644100001 From: Joao Martins Now that everything has been set up for device dirty page tracking, query the device for device dirty page tracking support. Signed-off-by: Avihai Horon Signed-off-by: Joao Martins Reviewed-by: C=C3=A9dric Le Goater Link: https://lore.kernel.org/r/20230307125450.62409-15-joao.m.martins@orac= le.com Signed-off-by: Alex Williamson --- hw/vfio/migration.c | 15 +++++++++++++++ 1 file changed, 15 insertions(+) diff --git a/hw/vfio/migration.c b/hw/vfio/migration.c index 776fd2d7cdf3..5d1e66f69194 100644 --- a/hw/vfio/migration.c +++ b/hw/vfio/migration.c @@ -555,6 +555,19 @@ static int vfio_migration_query_flags(VFIODevice *vbas= edev, uint64_t *mig_flags) return 0; } =20 +static bool vfio_dma_logging_supported(VFIODevice *vbasedev) +{ + uint64_t buf[DIV_ROUND_UP(sizeof(struct vfio_device_feature), + sizeof(uint64_t))] =3D {}; + struct vfio_device_feature *feature =3D (struct vfio_device_feature *)= buf; + + feature->argsz =3D sizeof(buf); + feature->flags =3D VFIO_DEVICE_FEATURE_PROBE | + VFIO_DEVICE_FEATURE_DMA_LOGGING_START; + + return !ioctl(vbasedev->fd, VFIO_DEVICE_FEATURE, feature); +} + static int vfio_migration_init(VFIODevice *vbasedev) { int ret; @@ -589,6 +602,8 @@ static int vfio_migration_init(VFIODevice *vbasedev) migration->device_state =3D VFIO_DEVICE_STATE_RUNNING; migration->data_fd =3D -1; =20 + vbasedev->dirty_pages_supported =3D vfio_dma_logging_supported(vbasede= v); + oid =3D vmstate_if_get_id(VMSTATE_IF(DEVICE(obj))); if (oid) { path =3D g_strdup_printf("%s/vfio", oid);