From patchwork Tue Jul 30 12:14:34 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liulongfang X-Patchwork-Id: 13747336 Received: from szxga07-in.huawei.com (szxga07-in.huawei.com [45.249.212.35]) (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 7CCE51957F0; Tue, 30 Jul 2024 12:20:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.35 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722342053; cv=none; b=bVRJUVw64eVCUGcfEKMRsAiB9vKD13QCd5mKM65LvS99GrBI2kBKAMqSoNMjSsk6la/bHOQ+BfTkPUx9AM/4xzoE9f9YgLQAQ3mLu+VwApEpYbD48Qr7sX66YCWoSY+0cflVRuqqiMBiM4GswDogTBpcTR17mNnyEgKixHVQtd4= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722342053; c=relaxed/simple; bh=MFpgjuZt+KC9o1pgyJcjr4gTDU/RS6sOdeTZNHd97WE=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=HoUdLNhiogtu+lScaNCj6t6YDLDl8TRjipo51nYU0UIINLpLxx2j0IHX0eKsBD76XOXu27DKU8deLhnLXSlR8KYxp+UGQht9nZsxUU13759siY2krAeE/RGx82hR84K+lRmeoi3YyQMGmU7EXFeEWMSP9XG5bOmlKwMVMlMxCBw= 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=45.249.212.35 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 [172.19.163.44]) by szxga07-in.huawei.com (SkyGuard) with ESMTP id 4WYDj6575tz1S6qF; Tue, 30 Jul 2024 20:16:10 +0800 (CST) Received: from kwepemm600005.china.huawei.com (unknown [7.193.23.191]) by mail.maildlp.com (Postfix) with ESMTPS id C719E14037E; Tue, 30 Jul 2024 20:20:43 +0800 (CST) Received: from huawei.com (10.50.165.33) by kwepemm600005.china.huawei.com (7.193.23.191) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 30 Jul 2024 20:20:43 +0800 From: Longfang Liu To: , , , CC: , , , Subject: [PATCH v7 0/4] debugfs to hisilicon migration driver Date: Tue, 30 Jul 2024 20:14:34 +0800 Message-ID: <20240730121438.58455-1-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 kwepemm600005.china.huawei.com (7.193.23.191) 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 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 | 295 ++++++++++++++++-- .../vfio/pci/hisilicon/hisi_acc_vfio_pci.h | 6 + 3 files changed, 295 insertions(+), 31 deletions(-) create mode 100644 Documentation/ABI/testing/debugfs-hisi-migration