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 05BB4C433EF for ; Tue, 28 Jun 2022 05:16:44 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S244784AbiF1FQo (ORCPT ); Tue, 28 Jun 2022 01:16:44 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60316 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S243826AbiF1FQL (ORCPT ); Tue, 28 Jun 2022 01:16:11 -0400 Received: from bombadil.infradead.org (bombadil.infradead.org [IPv6:2607:7c80:54:3::133]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id C5EE3275EA; Mon, 27 Jun 2022 22:14:43 -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=BybgAHG8mcJZK+n0MmfXzPg6oqI7+V4cJS5wzBl8ZAE=; b=yFERIp8x7nT49cP4kn2eTgcUme 7TrwIDvqFubSp+iBy2hH7htaD/YNWlwa4nECrY6cBLZ2bt7RGZt5gxHk8SwaECDdQJ58u3XTGNQCd 33h0vfsiw6YVlZ2HlB1kx4YOsNRn+QmaROeb4MW22f7Qqc99AOoo0u+uDp2zRzh/caChUmknJkMjv SqTWXSr7GWWw68QJKtyGNRuQAjYoLTpk8uAUMpt4T1v0nY6BWQ/GH7FA6szdgV6PRu0YpzYskNJIE T5kOAvM69afobMCj/ZzTKbOW8ELweOJoU0KpxBU2cO26MGnAFr0LY+g+fMTpLDmTxeJqjTQ1ksvQp +VXZFPhA==; Received: from [2001:4bb8:199:3788:e965:1541:b076:2977] (helo=localhost) by bombadil.infradead.org with esmtpsa (Exim 4.94.2 #2 (Red Hat Linux)) id 1o63Yb-004Kkj-GK; Tue, 28 Jun 2022 05:14:38 +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 v3 Date: Tue, 28 Jun 2022 07:14:22 +0200 Message-Id: <20220628051435.695540-1-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 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/gvt.h | 6 drivers/gpu/drm/i915/gvt/kvmgt.c | 158 ++++-------------- drivers/gpu/drm/i915/gvt/vgpu.c | 66 ++----- drivers/s390/cio/cio.h | 4 drivers/s390/cio/vfio_ccw_drv.c | 3 drivers/s390/cio/vfio_ccw_ops.c | 60 +------ drivers/s390/cio/vfio_ccw_private.h | 2 drivers/s390/crypto/vfio_ap_ops.c | 68 +------- drivers/s390/crypto/vfio_ap_private.h | 6 drivers/vfio/mdev/mdev_core.c | 185 ++++----------------- drivers/vfio/mdev/mdev_driver.c | 7 drivers/vfio/mdev/mdev_private.h | 32 --- drivers/vfio/mdev/mdev_sysfs.c | 187 +++++++++++----------- include/linux/mdev.h | 77 ++++----- samples/vfio-mdev/mbochs.c | 103 +++--------- samples/vfio-mdev/mdpy.c | 115 +++---------- samples/vfio-mdev/mtty.c | 94 +++-------- 20 files changed, 380 insertions(+), 823 deletions(-)