From patchwork Wed Jun 22 14:01:34 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Zimmermann X-Patchwork-Id: 12890739 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 CE325CCA485 for ; Wed, 22 Jun 2022 14:01:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1357799AbiFVOBq (ORCPT ); Wed, 22 Jun 2022 10:01:46 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:50928 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1357163AbiFVOBj (ORCPT ); Wed, 22 Jun 2022 10:01:39 -0400 Received: from smtp-out2.suse.de (smtp-out2.suse.de [195.135.220.29]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EF0A4369E2; Wed, 22 Jun 2022 07:01:38 -0700 (PDT) Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by smtp-out2.suse.de (Postfix) with ESMTPS id 99CEA1FD05; Wed, 22 Jun 2022 14:01:37 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_rsa; t=1655906497; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nNqejIK4XkB/g6M1yCpdVMg3lyKunZ50J756bTwwnb4=; b=latYMzbpEH+tp6J2mRBhpyrz5+GCu85gL3h1OlrTM2vHUkkOMGv0cv5d7k3L2z11yvijoI pbOnSa3eZhTgcrxdFpc6Kw+2ov8RCT7S9/lQ9SNLOwQI8o+p8mPkTUGdBeaENqkAxO99QN 8gAqZHRSBbI0SZ424InEkwp5PbGcU3E= DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=suse.de; s=susede2_ed25519; t=1655906497; h=from:from:reply-to:date:date:message-id:message-id:to:to:cc:cc: mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=nNqejIK4XkB/g6M1yCpdVMg3lyKunZ50J756bTwwnb4=; b=BmXV7YgRO9SIg/rRI4fK6Gex9oJZ6fFx426Q5WoROO/nKthZMOyCyjhWvMD5M1jP2gWZCd nYGSnTrwMGfiJTBQ== Received: from imap2.suse-dmz.suse.de (imap2.suse-dmz.suse.de [192.168.254.74]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-521) server-digest SHA512) (No client certificate requested) by imap2.suse-dmz.suse.de (Postfix) with ESMTPS id 4AA7713AC7; Wed, 22 Jun 2022 14:01:37 +0000 (UTC) Received: from dovecot-director2.suse.de ([192.168.254.65]) by imap2.suse-dmz.suse.de with ESMTPSA id EOhfEcEgs2IVRwAAMHmgww (envelope-from ); Wed, 22 Jun 2022 14:01:37 +0000 From: Thomas Zimmermann To: alex.williamson@redhat.com, corbet@lwn.net, maarten.lankhorst@linux.intel.com, mripard@kernel.org, airlied@linux.ie, daniel@ffwll.ch, deller@gmx.de, gregkh@linuxfoundation.org, javierm@redhat.com, lersek@redhat.com, kraxel@redhat.com Cc: linux-doc@vger.kernel.org, dri-devel@lists.freedesktop.org, linux-fbdev@vger.kernel.org, linux-kernel@vger.kernel.org, kvm@vger.kernel.org Subject: [PATCH v3 3/3] vfio/pci: Remove console drivers Date: Wed, 22 Jun 2022 16:01:34 +0200 Message-Id: <20220622140134.12763-4-tzimmermann@suse.de> X-Mailer: git-send-email 2.36.1 In-Reply-To: <20220622140134.12763-1-tzimmermann@suse.de> References: <20220622140134.12763-1-tzimmermann@suse.de> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org From: Alex Williamson Console drivers can create conflicts with PCI resources resulting in userspace getting mmap failures to memory BARs. This is especially evident when trying to re-use the system primary console for userspace drivers. Use the aperture helpers to remove these conflicts. v3: * call aperture_remove_conflicting_pci_devices() Reported-by: Laszlo Ersek Suggested-by: Gerd Hoffmann Signed-off-by: Alex Williamson Reviewed-by: Javier Martinez Canillas Tested-by: Laszlo Ersek --- drivers/vfio/pci/vfio_pci_core.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/vfio/pci/vfio_pci_core.c b/drivers/vfio/pci/vfio_pci_core.c index a0d69ddaf90d..756d049bd9cf 100644 --- a/drivers/vfio/pci/vfio_pci_core.c +++ b/drivers/vfio/pci/vfio_pci_core.c @@ -10,6 +10,7 @@ #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt +#include #include #include #include @@ -1793,6 +1794,10 @@ static int vfio_pci_vga_init(struct vfio_pci_core_device *vdev) if (!vfio_pci_is_vga(pdev)) return 0; + ret = aperture_remove_conflicting_pci_devices(pdev, vdev->vdev.ops->name); + if (ret) + return ret; + ret = vga_client_register(pdev, vfio_pci_set_decode); if (ret) return ret;