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[2604:1380:45d1:ec00::1]) by mx.google.com with ESMTPS id m11-20020a0562141bcb00b0069937046d9asi16198381qvc.533.2024.04.24.13.12.55 for (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 24 Apr 2024 13:12:55 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel+bounces-157664-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) client-ip=2604:1380:45d1:ec00::1; Authentication-Results: mx.google.com; dkim=pass header.i=@kernel.org header.s=k20201202 header.b=dxuogYdE; arc=pass (i=1 dkim=pass dkdomain=kernel.org); spf=pass (google.com: domain of linux-kernel+bounces-157664-linux.lists.archive=gmail.com@vger.kernel.org designates 2604:1380:45d1:ec00::1 as permitted sender) smtp.mailfrom="linux-kernel+bounces-157664-linux.lists.archive=gmail.com@vger.kernel.org"; dmarc=pass (p=NONE sp=NONE dis=NONE) header.from=kernel.org Received: from smtp.subspace.kernel.org (wormhole.subspace.kernel.org [52.25.139.140]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by ny.mirrors.kernel.org (Postfix) with ESMTPS id 0ACBC1C21479 for ; Wed, 24 Apr 2024 20:12:55 +0000 (UTC) Received: from localhost.localdomain (localhost.localdomain [127.0.0.1]) by smtp.subspace.kernel.org (Postfix) with ESMTP id F3F0E142906; Wed, 24 Apr 2024 20:12:39 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="dxuogYdE" Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (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 2B0101BC46; Wed, 24 Apr 2024 20:12:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713989559; cv=none; b=BprrcnaONJ6SDRdx8l9zSNcjOY6gBWNYFjHJONjguLlbWlIP9YR4hkGMiriVY3ACbZM9afGmBeos98TIUA55fXURprFlulusGcuiSP25FC1jlKvj3/gerBpJojh6cvwuNiFJjUIW9IywK2bm6UyoVnhFqxSehFBxNY1aLQOswrU= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1713989559; c=relaxed/simple; bh=2Dj97MqB0+KxSUpFoSn5vPI5paGeISoPys0v4rngQK0=; h=Date:From:To:Cc:Subject:Message-ID:MIME-Version:Content-Type: Content-Disposition:In-Reply-To; b=LBY2MGjVOU4Lt5IpxPy860Qplyi/8FWkNZCnd06q2RM33zjILYH9VHjXDlbYY9yPoYE/hy6ORo6m8fpw124fUBMQ1wXMTJEWJm8IXuSFKqyll02GuzBUJ9ib48xPu7H4CMeO7yIvUhPa1A0DWtGSpcp696Q0EwZSJXvqkeEs7OE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=dxuogYdE; arc=none smtp.client-ip=10.30.226.201 Received: by smtp.kernel.org (Postfix) with ESMTPSA id 6FB87C113CD; Wed, 24 Apr 2024 20:12:38 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1713989558; bh=2Dj97MqB0+KxSUpFoSn5vPI5paGeISoPys0v4rngQK0=; h=Date:From:To:Cc:Subject:In-Reply-To:From; b=dxuogYdE8Ogd4lUlvyAT+sHHTarFFWfuxlSxa2pzl+W+XCxzQa35pR8eENXgHkTVw yHH8e15VPFYJb7zvfxIefVyS0+NrTGFAr8VapDkdspYAFZUrxbbjoX0PDf/5mQzNIG zlJezJ2N5tkTil3iGXVoJUE0atjSwar0qE65RG6IfpDgKV/flhymiDbFHjqay9BuVe XVz8b58UOyipf1ZbfPFc8GvbmaNZFySxAxJAQuUGdBqR6JZ38X+8eKaTnumZJTR1a+ xW1t0Iz60W3pYNZ20GoQkxdpcX3Q8fnBM6a27nJ76PEIJd6qpyUN/oppprwTG9VxuY iqed37IeeSyZQ== Date: Wed, 24 Apr 2024 15:12:36 -0500 From: Bjorn Helgaas To: Philipp Stanner Cc: Hans de Goede , Maarten Lankhorst , Maxime Ripard , Thomas Zimmermann , David Airlie , Daniel Vetter , Bjorn Helgaas , Sam Ravnborg , dakr@redhat.com, dri-devel@lists.freedesktop.org, linux-kernel@vger.kernel.org, linux-pci@vger.kernel.org Subject: Re: [PATCH v6 04/10] PCI: Make devres region requests consistent Message-ID: <20240424201236.GA504035@bhelgaas> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20240408084423.6697-5-pstanner@redhat.com> On Mon, Apr 08, 2024 at 10:44:16AM +0200, Philipp Stanner wrote: > Now that pure managed region request functions are available, the > implementation of the hybrid-functions which are only sometimes managed > can be made more consistent and readable by wrapping those > always-managed functions. > > Implement a new pcim_ function for exclusively requested regions. > Have the pci_request / release functions call their pcim_ counterparts. > Remove the now surplus region_mask from struct pci_devres. This looks like two patches; could they be separated? - Convert __pci_request_region() etc to the new pcim model - Add pcim_request_region_exclusive() IORESOURCE_EXCLUSIVE was added by e8de1481fd71 ("resource: allow MMIO exclusivity for device drivers") in 2008 to help debug an e1000e problem. In the 16 years since, there's only been one new PCI-related use (ne_pci_probe()), and we don't add a user of pcim_request_region_exclusive() in this series, so I would defer it until somebody wants it. Bjorn