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 gabe.freedesktop.org (gabe.freedesktop.org [131.252.210.177]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id CB69FECAAA1 for ; Tue, 6 Sep 2022 14:21:33 +0000 (UTC) Received: from gabe.freedesktop.org (localhost [127.0.0.1]) by gabe.freedesktop.org (Postfix) with ESMTP id 7AA3410E699; Tue, 6 Sep 2022 14:21:32 +0000 (UTC) Received: from casper.infradead.org (casper.infradead.org [IPv6:2001:8b0:10b:1236::1]) by gabe.freedesktop.org (Postfix) with ESMTPS id 13D2810E68E for ; Tue, 6 Sep 2022 14:21:28 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=infradead.org; s=casper.20170209; h=In-Reply-To:Content-Transfer-Encoding: Content-Type:MIME-Version:References:Message-ID:Subject:Cc:To:From:Date: Sender:Reply-To:Content-ID:Content-Description; bh=dRpxQ4jjwN1yFtBGpEPXLSbtDHI+DAP32QAWwCSE7yM=; b=v4K4BuErh9R48s3gAbIlnJ7jJk m89LeHbJ/8pbR5E5DOEhBRre082ax9NRRGdB2lGdDto9SYoPe3Lg24Rwc+HmeinJWH0tIasU+kbAD VpCVj5tY464MtLwHGgTeMwmbTEf/teh+lr6JEnrXtcNyinIvwU9ovMTKne80oziMvNPyXUCXy0Yx+ zKPXune2C8F8IlitS5VzG6kwpxcQRkUTgJzy0cCFpDcuKLM/Y51l7uuhoNU1TU6EZ/QExYAxohBxA 7m2qb0LewkLsS1QwYfg7JeraCp+XL/s2l1LcaSJCM7nWYANeOfMeQcoZBp3Z5o1fWNAr3dQ7sFjSa Gg0rQppw==; Received: from willy by casper.infradead.org with local (Exim 4.94.2 #2 (Red Hat Linux)) id 1oVZS9-00AUXk-PE; Tue, 06 Sep 2022 14:21:25 +0000 Date: Tue, 6 Sep 2022 15:21:25 +0100 From: Matthew Wilcox To: =?utf-8?Q?Micha=C5=82?= Winiarski Subject: Re: [PATCH v3 0/4] drm: Use full allocated minor range for DRM Message-ID: References: <20220906140117.409852-1-michal.winiarski@intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8 Content-Disposition: inline Content-Transfer-Encoding: 8bit In-Reply-To: <20220906140117.409852-1-michal.winiarski@intel.com> X-BeenThere: dri-devel@lists.freedesktop.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Direct Rendering Infrastructure - Development List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Thomas Zimmermann , David Airlie , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org Errors-To: dri-devel-bounces@lists.freedesktop.org Sender: "dri-devel" On Tue, Sep 06, 2022 at 04:01:13PM +0200, Michał Winiarski wrote: > 64 DRM device nodes is not enough for everyone. > Upgrade it to ~512K (which definitely is more than enough). > > To allow testing userspace support for >64 devices, add additional DRM > modparam (skip_legacy_minors) which causes DRM to skip allocating minors > in 0-192 range. > Additionally - one minor tweak around minor DRM IDR locking and IDR lockdep > annotations. The IDR is deprecated; rather than making all these changes around the IDR, could you convert it to use the XArray instead? I did it once before, but those patches bounced off the submissions process.