From patchwork Sat Oct 28 07:54:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: liulongfang X-Patchwork-Id: 13439381 Received: from lindbergh.monkeyblade.net (lindbergh.monkeyblade.net [23.128.96.19]) (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 6C96F8F48 for ; Sat, 28 Oct 2023 07:58:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=none Received: from szxga08-in.huawei.com (szxga08-in.huawei.com [45.249.212.255]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id BD384F2; Sat, 28 Oct 2023 00:58:52 -0700 (PDT) Received: from kwepemm000005.china.huawei.com (unknown [172.30.72.54]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4SHX0B567Jz1L9L1; Sat, 28 Oct 2023 15:55:54 +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; Sat, 28 Oct 2023 15:58:50 +0800 From: Longfang Liu To: , , , CC: , , , , Subject: [PATCH v18 2/2] Documentation: add debugfs description for vfio Date: Sat, 28 Oct 2023 15:54:47 +0800 Message-ID: <20231028075447.41939-3-liulongfang@huawei.com> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20231028075447.41939-1-liulongfang@huawei.com> References: <20231028075447.41939-1-liulongfang@huawei.com> Precedence: bulk X-Mailing-List: kvm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-Originating-IP: [10.50.163.32] X-ClientProxiedBy: dggems706-chm.china.huawei.com (10.3.19.183) To kwepemm000005.china.huawei.com (7.193.23.27) X-CFilter-Loop: Reflected 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 Reviewed-by: Cédric Le Goater --- 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..445e9f58f924 --- /dev/null +++ b/Documentation/ABI/testing/debugfs-vfio @@ -0,0 +1,25 @@ +What: /sys/kernel/debug/vfio +Date: Oct 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: Oct 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: Oct 2023 +KernelVersion: 6.7 +Contact: Longfang Liu +Description: Read the live migration status of the vfio device. + The contents of the state file reflects the migration state + relative to those defined in the vfio_device_mig_state enum diff --git a/MAINTAINERS b/MAINTAINERS index b19995690904..a6be3b4219c7 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -22591,6 +22591,7 @@ 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