From patchwork Tue Sep 26 09:33:56 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: liulongfang X-Patchwork-Id: 13398956 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id E4EFAE7D271 for ; Tue, 26 Sep 2023 09:37:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234161AbjIZJh4 (ORCPT ); Tue, 26 Sep 2023 05:37:56 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58470 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S234160AbjIZJhy (ORCPT ); Tue, 26 Sep 2023 05:37:54 -0400 Received: from szxga01-in.huawei.com (szxga01-in.huawei.com [45.249.212.187]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 909A1101; Tue, 26 Sep 2023 02:37:47 -0700 (PDT) Received: from kwepemm000005.china.huawei.com (unknown [172.30.72.56]) by szxga01-in.huawei.com (SkyGuard) with ESMTP id 4RvvgT0v4RztT6d; Tue, 26 Sep 2023 17:33:25 +0800 (CST) Received: from huawei.com (10.50.163.32) by kwepemm000005.china.huawei.com (7.193.23.27) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.31; Tue, 26 Sep 2023 17:37:45 +0800 From: liulongfang To: , , , CC: , , , , Subject: [PATCH v16 2/2] Documentation: add debugfs description for vfio Date: Tue, 26 Sep 2023 17:33:56 +0800 Message-ID: <20230926093356.56014-3-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20230926093356.56014-1-liulongfang@huawei.com> References: <20230926093356.56014-1-liulongfang@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.50.163.32] X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm000005.china.huawei.com (7.193.23.27) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Longfang Liu 1.Add an debugfs document description file to help users understand how to use the accelerator live migration driver's debugfs. 2.Update the file paths that need to be maintained in MAINTAINERS Signed-off-by: Longfang Liu --- Documentation/ABI/testing/debugfs-vfio | 25 +++++++++++++++++++++++++ MAINTAINERS | 1 + 2 files changed, 26 insertions(+) create mode 100644 Documentation/ABI/testing/debugfs-vfio diff --git a/Documentation/ABI/testing/debugfs-vfio b/Documentation/ABI/testing/debugfs-vfio new file mode 100644 index 000000000000..7959ec5ac445 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-vfio @@ -0,0 +1,25 @@ +What: /sys/kernel/debug/vfio +Date: Sep 2023 +KernelVersion: 6.7 +Contact: Longfang Liu +Description: This debugfs file directory is used for debugging + of vfio devices, it's a common directory for all vfio devices. + Vfio core will create a device subdirectory under this + directory. + +What: /sys/kernel/debug/vfio//migration +Date: Sep 2023 +KernelVersion: 6.7 +Contact: Longfang Liu +Description: This debugfs file directory is used for debugging + of vfio devices that support live migration. + The debugfs of each vfio device that supports live migration + could be created under this directory. + +What: /sys/kernel/debug/vfio//migration/state +Date: Sep 2023 +KernelVersion: 6.7 +Contact: Longfang Liu +Description: Read the live migration status of the vfio device. + The status of these live migrations includes: + ERROR, RUNNING, STOP, STOP_COPY, RESUMING. diff --git a/MAINTAINERS b/MAINTAINERS index 7b1306615fc0..bd01ca674c60 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22304,6 +22304,7 @@ L: kvm@vger.kernel.org S: Maintained T: git https://github.com/awilliam/linux-vfio.git F: Documentation/ABI/testing/sysfs-devices-vfio-dev +F: Documentation/ABI/testing/debugfs-vfio F: Documentation/driver-api/vfio.rst F: drivers/vfio/ F: include/linux/vfio.h