From patchwork Mon Sep 28 01:06:09 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Jon Derrick X-Patchwork-Id: 11802703 X-Patchwork-Delegate: bhelgaas@google.com Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 6503E92C for ; Mon, 28 Sep 2020 01:26:25 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 4DFDD23A50 for ; Mon, 28 Sep 2020 01:26:25 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726442AbgI1B0J (ORCPT ); Sun, 27 Sep 2020 21:26:09 -0400 Received: from mga17.intel.com ([192.55.52.151]:64441 "EHLO mga17.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726409AbgI1B0J (ORCPT ); Sun, 27 Sep 2020 21:26:09 -0400 IronPort-SDR: iGAfyU/ZKBTVYpQ74sC9WowQUygYtaignH+w/QD/KtVozshbUFk895uEvVBj96ceMZCy05XBNZ MB7hkkSvd59g== X-IronPort-AV: E=McAfee;i="6000,8403,9757"; a="141939480" X-IronPort-AV: E=Sophos;i="5.77,312,1596524400"; d="scan'208";a="141939480" X-Amp-Result: SKIPPED(no attachment in message) X-Amp-File-Uploaded: False Received: from orsmga004.jf.intel.com ([10.7.209.38]) by fmsmga107.fm.intel.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 27 Sep 2020 18:26:24 -0700 IronPort-SDR: 42i1DP5Sb2AtqkUyWUrxGWSArXnTG/7ce/dVVHGewZ1hRjxp40YgS5rfGHO6pKGF3vapqTMmPM CKm3d+Leflnw== X-ExtLoop1: 1 X-IronPort-AV: E=Sophos;i="5.77,312,1596524400"; d="scan'208";a="456639894" Received: from unknown (HELO localhost.lm.intel.com) ([10.232.116.36]) by orsmga004.jf.intel.com with ESMTP; 27 Sep 2020 18:26:23 -0700 From: Jon Derrick To: Cc: Lorenzo Pieralisi , Bjorn Helgaas , Andrzej Jakowski , Dave Fugate , Jon Derrick Subject: [PATCH 3/3] PCI: vmd: Wire up VMD for fallback resource assignment Date: Sun, 27 Sep 2020 21:06:09 -0400 Message-Id: <20200928010609.5375-4-jonathan.derrick@intel.com> X-Mailer: git-send-email 2.18.1 In-Reply-To: <20200928010609.5375-1-jonathan.derrick@intel.com> References: <20200928010609.5375-1-jonathan.derrick@intel.com> Precedence: bulk List-ID: X-Mailing-List: linux-pci@vger.kernel.org The VMD subdevice domain would prefer all devices be assigned resources and working rather than a few or none assigned, but with valid hotplug bridge resources. The resource assignment fallback algorithm works best for these requirements. Signed-off-by: Jon Derrick --- drivers/pci/controller/vmd.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/pci/controller/vmd.c b/drivers/pci/controller/vmd.c index fdc1a206f73e..4debc547c813 100644 --- a/drivers/pci/controller/vmd.c +++ b/drivers/pci/controller/vmd.c @@ -777,7 +777,7 @@ static int vmd_enable_domain(struct vmd_dev *vmd, unsigned long features) dev_set_msi_domain(&vmd->bus->dev, vmd->irq_domain); pci_scan_child_bus(vmd->bus); - pci_assign_unassigned_bus_resources(vmd->bus); + pci_bus_assign_resources_fallback_sizing(vmd->bus); /* * VMD root buses are virtual and don't return true on pci_is_pcie()