From mboxrd@z Thu Jan 1 00:00:00 1970 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 46496C32774 for ; Mon, 22 Aug 2022 06:22:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232879AbiHVGW0 (ORCPT ); Mon, 22 Aug 2022 02:22:26 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39592 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232223AbiHVGWY (ORCPT ); Mon, 22 Aug 2022 02:22:24 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 02BF3275D2; Sun, 21 Aug 2022 23:22:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=bombadil.20210309; h=Content-Transfer-Encoding: MIME-Version:Message-Id:Date:Subject:Cc:To:From:Sender:Reply-To:Content-Type: Content-ID:Content-Description:In-Reply-To:References; bh=UJklhtPf7Vvs80l7or/jdQ9kJpFAr1l+m9e6LvJrRyY=; b=a+XVNZ5qTAMy/biXUPYxzJcEQT yOPuvNL9tHS/wLEsfMQKPaON+kLRkUYYIcw+qrI4aj8bC5gxLB+LVaXrgcmvUTeD/Hg+8xAaWezGm gLKkVlDbgMMSwRVv9cHmr6viTVw6n/giAcV+ckQpkDqR8FG7f0haVYITsIeRhuLTIvwm7QjpQQ7xo UzkBhKTkGTHEbF4P1s4bYHmZ5w0wWyEh7c2UaydAXjDDPldVo72z6QfxUOJ7ITSwGinBKQoDyRSbd K/XaZ1g9jbQhU6xtbYNibs7fz+xL36mrgbXpX/gAGlt3Swm++orCI2nAVMGvWuKKXz0vB6IWZVctm p4fKGXFw==; Received: from [2001:4bb8:198:6528:7eb3:3a42:932d:eeba] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1oQ0p8-005NO9-CH; Mon, 22 Aug 2022 06:22:10 +0000 From: Christoph Hellwig To: Kirti Wankhede , Tony Krowiak , Halil Pasic , Jason Herne , Eric Farman , Matthew Rosato , Zhenyu Wang , Zhi Wang , Alex Williamson Cc: Jason Gunthorpe , kvm@vger.kernel.org, linux-s390@vger.kernel.org, intel-gvt-dev@lists.freedesktop.org Subject: simplify the mdev interface v7 Date: Mon, 22 Aug 2022 08:21:54 +0200 Message-Id: <20220822062208.152745-1-hch@lst.de> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-SRS-Rewrite: SMTP reverse-path rewritten from by bombadil.infradead.org. See http://www.infradead.org/rpr.html Precedence: bulk List-ID: X-Mailing-List: linux-s390@vger.kernel.org Hi all, this series signigicantly simplies the mdev driver interface by following the patterns for device model interaction used elsewhere in the kernel. Changes since v6: - rebased to Linux 6.0-rc2 - folded in a patch from Eric Farman to fix the placement of the new embedded mdev structured in the s390 cio driver Changes since v5: - rebased to the latest vfio/next branch - drop the last patch again - make sure show_available_instances works properly for the internallly tracked case Changes since v4: - move the kobject_put later in mdev_device_release - add a Fixes tag for the first patch - add another patch to remove an extra kobject_get/put Changes since v3: - make the sysfs_name and pretty_name fields pointers instead of arrays - add an i915 cleanup to prepare for the above Changes since v2: - rebased to vfio/next - fix a pre-existing memory leak in i915 instead of making it worse - never manipulate if ->available_instances if drv->get_available is provided - keep a parent reference for the mdev_type - keep a few of the sysfs.c helper function around - improve the documentation for the parent device lifetime - minor spellig / formatting fixes Changes since v1: - embedd the mdev_parent into a different sub-structure in i916 - remove headers now inclued by mdev.h from individual source files - pass an array of mdev_types to mdev_register_parent - add additional patches to implement all attributes on the mdev_type in the core code Diffstat: Documentation/driver-api/vfio-mediated-device.rst | 26 +- Documentation/s390/vfio-ap.rst | 2 Documentation/s390/vfio-ccw.rst | 2 drivers/gpu/drm/i915/gvt/aperture_gm.c | 20 +- drivers/gpu/drm/i915/gvt/gvt.h | 42 ++-- drivers/gpu/drm/i915/gvt/kvmgt.c | 168 ++++------------- drivers/gpu/drm/i915/gvt/vgpu.c | 210 +++++++--------------- drivers/s390/cio/cio.h | 1 drivers/s390/cio/vfio_ccw_drv.c | 12 - drivers/s390/cio/vfio_ccw_ops.c | 51 ----- drivers/s390/cio/vfio_ccw_private.h | 6 drivers/s390/crypto/vfio_ap_ops.c | 68 +------ drivers/s390/crypto/vfio_ap_private.h | 6 drivers/vfio/mdev/mdev_core.c | 190 ++++--------------- drivers/vfio/mdev/mdev_driver.c | 7 drivers/vfio/mdev/mdev_private.h | 32 --- drivers/vfio/mdev/mdev_sysfs.c | 189 ++++++++++--------- include/linux/mdev.h | 77 ++++---- samples/vfio-mdev/mbochs.c | 103 +++------- samples/vfio-mdev/mdpy.c | 115 +++--------- samples/vfio-mdev/mtty.c | 94 +++------ 21 files changed, 464 insertions(+), 957 deletions(-)