From patchwork Fri Jun 30 05:24:33 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexey Kardashevskiy X-Patchwork-Id: 9818435 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id AE648603F3 for ; Fri, 30 Jun 2017 05:24:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A182D2847A for ; Fri, 30 Jun 2017 05:24:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9656728520; Fri, 30 Jun 2017 05:24:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 55502285D8 for ; Fri, 30 Jun 2017 05:24:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1751936AbdF3FYr (ORCPT ); Fri, 30 Jun 2017 01:24:47 -0400 Received: from ozlabs.ru ([107.173.13.209]:38974 "EHLO ozlabs.ru" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751787AbdF3FYq (ORCPT ); Fri, 30 Jun 2017 01:24:46 -0400 Received: from vpl2.ozlabs.ibm.com (localhost [IPv6:::1]) by ozlabs.ru (Postfix) with ESMTP id 7C24E3A60043; Fri, 30 Jun 2017 01:25:28 -0400 (EDT) From: Alexey Kardashevskiy To: kvm@vger.kernel.org Cc: Alexey Kardashevskiy , David Gibson , Alex Williamson , Bjorn Helgaas , Yongji Xie , Eric Auger , Yongji Xie Subject: [PATCH kernel v4 3/6] PCI: Set PCI_BUS_FLAGS_MSI_REMAP if IOMMU have capability of IRQ remapping Date: Fri, 30 Jun 2017 15:24:33 +1000 Message-Id: <20170630052436.15212-4-aik@ozlabs.ru> X-Mailer: git-send-email 2.11.0 In-Reply-To: <20170630052436.15212-1-aik@ozlabs.ru> References: <20170630052436.15212-1-aik@ozlabs.ru> Sender: kvm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Yongji Xie The capability of IRQ remapping is abstracted on IOMMU side on some archs. There is a existing flag IOMMU_CAP_INTR_REMAP for this. To have a universal flag to test this capability for different archs on PCI side, we set PCI_BUS_FLAGS_MSI_REMAP for PCI buses when IOMMU_CAP_INTR_REMAP is set. Signed-off-by: Yongji Xie Signed-off-by: Alexey Kardashevskiy --- drivers/pci/probe.c | 3 +++ 1 file changed, 3 insertions(+) diff --git a/drivers/pci/probe.c b/drivers/pci/probe.c index 3529ae17b70e..f2393b7d7ebf 100644 --- a/drivers/pci/probe.c +++ b/drivers/pci/probe.c @@ -775,6 +775,9 @@ int pci_register_host_bridge(struct pci_host_bridge *bridge) pci_set_bus_of_node(bus); pci_set_bus_msi_domain(bus); + if (iommu_capable(&pci_bus_type, IOMMU_CAP_INTR_REMAP)) + b->bus_flags |= PCI_BUS_FLAGS_MSI_REMAP; + if (!parent) set_dev_node(bus->bridge, pcibus_to_node(bus));