From patchwork Fri Nov 8 06:55:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Longfang Liu X-Patchwork-Id: 13867636 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 9BCD729CEF; Fri, 8 Nov 2024 06:56:15 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731048978; cv=none; b=A8zjdnpMigvsEXgOfACkCBAnfnuoXa60BMqXNvUZvkLVJftrSr0h48Zq8sLrXsPk1oEBq+Dhx3NpHz+wJmuEzPPaGHQR86jkKpsS+VQZ33Tpm2vqlYCZAbTmG8Vpe9PyaHzhMNJcufhWCj/8t/ejpKQZ+55Fd+p2xjR00XXV3qo= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1731048978; c=relaxed/simple; bh=gL7GdNQZJFpaAEzBQEkTm9MiK/kI5ractoD9vU5bzwA=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=qPmYxNbLjVrNmeNpgznq4qCPCb6cQOmZJSqjqOt5E/PW4x8si9A83VxG5II9dBfO7G5zdR1xC7N6+qv8ofa/5uFYzWm6BzICcbXVLPtVV1udZpsjQyOd+waeer4iKAuxdKtyukPhEkMDiuTHvxm4WQ1uHV/eR5+1vfyyHogWgAY= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4Xl8jy5yVZz1JB7h; Fri, 8 Nov 2024 14:51:34 +0800 (CST) Received: from dggemv711-chm.china.huawei.com (unknown [10.1.198.66]) by mail.maildlp.com (Postfix) with ESMTPS id EEDFA1A0188; Fri, 8 Nov 2024 14:56:12 +0800 (CST) Received: from kwepemn100017.china.huawei.com (7.202.194.122) by dggemv711-chm.china.huawei.com (10.1.198.66) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Fri, 8 Nov 2024 14:56:12 +0800 Received: from huawei.com (10.50.165.33) by kwepemn100017.china.huawei.com (7.202.194.122) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.2.1544.11; Fri, 8 Nov 2024 14:56:12 +0800 From: Longfang Liu To: , , , CC: , , , Subject: [PATCH v14 0/4] debugfs to hisilicon migration driver Date: Fri, 8 Nov 2024 14:55:34 +0800 Message-ID: <20241108065538.45710-1-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To kwepemn100017.china.huawei.com (7.202.194.122) Add a debugfs function to the hisilicon migration driver in VFIO to provide intermediate state values and data during device migration. When the execution of live migration fails, the user can view the status and data during the migration process separately from the source and the destination, which is convenient for users to analyze and locate problems. Changes v13 -> v14 Bugfix the parameter problem of seq_puts() Changes v12 -> v13 Replace seq_printf() with seq_puts() Changes v11 -> v12 Update comments and delete unnecessary logs Changes v10 -> v11 Update conditions for debugfs registration Changes v9 -> v10 Optimize symmetry processing of mutex Changes v8 -> v9 Added device enable mutex Changes v7 -> v8 Delete unnecessary information Changes v6 -> v7 Remove redundant kernel error log printing and remove unrelated bugfix code Changes v5 -> v6 Modify log output calling error Changes v4 -> v5 Adjust the descriptioniptionbugfs file directory Changes v3 -> v4 Rebased on kernel6.9 Changes 2 -> v3 Solve debugfs serialization problem. Changes v1 -> v2 Solve the racy problem of io_base. Longfang Liu (4): hisi_acc_vfio_pci: extract public functions for container_of hisi_acc_vfio_pci: create subfunction for data reading hisi_acc_vfio_pci: register debugfs for hisilicon migration driver Documentation: add debugfs description for hisi migration .../ABI/testing/debugfs-hisi-migration | 25 ++ .../vfio/pci/hisilicon/hisi_acc_vfio_pci.c | 266 ++++++++++++++++-- .../vfio/pci/hisilicon/hisi_acc_vfio_pci.h | 19 ++ 3 files changed, 279 insertions(+), 31 deletions(-) create mode 100644 Documentation/ABI/testing/debugfs-hisi-migration