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 X-Spam-Level: X-Spam-Status: No, score=-17.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_CR_TRAILER,INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS, URIBL_BLOCKED autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3EE54C63797 for ; Thu, 22 Jul 2021 14:48:51 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 241646135B for ; Thu, 22 Jul 2021 14:48:51 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232516AbhGVOIP (ORCPT ); Thu, 22 Jul 2021 10:08:15 -0400 Received: from us-smtp-delivery-124.mimecast.com ([216.205.24.124]:30537 "EHLO us-smtp-delivery-124.mimecast.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232328AbhGVOIO (ORCPT ); Thu, 22 Jul 2021 10:08:14 -0400 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1626965328; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=zcazrHRmrdUI7TLRVzAfUPzPLR8CDoZHugRg17DaTr8=; b=gzJ2UcnwRzsSCIDR3eO9UIs5B/xJlPv/WHKx0ubjNKcCy25LrVDnXLGTBzBZWw4RF5pxo0 6II2a1VsyqT5B2zMNRo35RnKZFHKgClc0ICj1pBdEdCrupI9KkjF53ugvRTwuXse9Brx1f 7feZaSqKYiwRg7XLUYz28emaju1wnYM= Received: from mimecast-mx01.redhat.com (mimecast-mx01.redhat.com [209.132.183.4]) (Using TLS) by relay.mimecast.com with ESMTP id us-mta-415-RATX3Rf1PGqQpwFT7SpNWQ-1; Thu, 22 Jul 2021 10:48:47 -0400 X-MC-Unique: RATX3Rf1PGqQpwFT7SpNWQ-1 Received: from smtp.corp.redhat.com (int-mx04.intmail.prod.int.phx2.redhat.com [10.5.11.14]) (using TLSv1.2 with cipher AECDH-AES256-SHA (256/256 bits)) (No client certificate requested) by mimecast-mx01.redhat.com (Postfix) with ESMTPS id 0AB31804141; Thu, 22 Jul 2021 14:48:43 +0000 (UTC) Received: from localhost (ovpn-112-132.ams2.redhat.com [10.36.112.132]) by smtp.corp.redhat.com (Postfix) with ESMTPS id 2648A5DA2D; Thu, 22 Jul 2021 14:48:33 +0000 (UTC) From: Cornelia Huck To: Jason Gunthorpe , David Airlie , Tony Krowiak , Alex Williamson , Christian Borntraeger , Jonathan Corbet , Daniel Vetter , Diana Craciun , dri-devel@lists.freedesktop.org, Eric Auger , Eric Farman , Harald Freudenberger , Vasily Gorbik , Heiko Carstens , intel-gfx@lists.freedesktop.org, intel-gvt-dev@lists.freedesktop.org, Jani Nikula , Jason Herne , Joonas Lahtinen , kvm@vger.kernel.org, Kirti Wankhede , linux-doc@vger.kernel.org, linux-s390@vger.kernel.org, Matthew Rosato , Peter Oberparleiter , Halil Pasic , Rodrigo Vivi , Vineeth Vijayan , Zhi Wang Cc: "Raj, Ashok" , Christoph Hellwig , Leon Romanovsky , Max Gurtovoy , Yishai Hadas , Zhenyu Wang Subject: Re: [PATCH v2 07/14] vfio/platform: Use open_device() instead of open coding a refcnt scheme In-Reply-To: <7-v2-b6a5582525c9+ff96-vfio_reflck_jgg@nvidia.com> Organization: Red Hat GmbH References: <7-v2-b6a5582525c9+ff96-vfio_reflck_jgg@nvidia.com> User-Agent: Notmuch/0.32.1 (https://notmuchmail.org) Date: Thu, 22 Jul 2021 16:48:31 +0200 Message-ID: <878s1y76bk.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain X-Scanned-By: MIMEDefang 2.79 on 10.5.11.14 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Tue, Jul 20 2021, Jason Gunthorpe wrote: > Platform simply wants to run some code when the device is first > opened/last closed. Use the core framework and locking for this. Aside > from removing a bit of code this narrows the locking scope from a global > lock. > > Signed-off-by: Yishai Hadas > Signed-off-by: Jason Gunthorpe > --- > drivers/vfio/platform/vfio_platform_common.c | 79 ++++++++----------- > drivers/vfio/platform/vfio_platform_private.h | 1 - > 2 files changed, 32 insertions(+), 48 deletions(-) Reviewed-by: Cornelia Huck