From patchwork Fri Aug 21 00:24:44 2020 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Thomas Gleixner X-Patchwork-Id: 11727419 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 EFFC4138C for ; Fri, 21 Aug 2020 02:27:10 +0000 (UTC) Received: from lists.xenproject.org (lists.xenproject.org [192.237.175.120]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id CD330207BB for ; Fri, 21 Aug 2020 02:27:10 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="ZHPMzYaP"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="JYv5Wl4U" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org CD330207BB Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=xen-devel-bounces@lists.xenproject.org Received: from localhost ([127.0.0.1] helo=lists.xenproject.org) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k8wlL-00056g-C6; Fri, 21 Aug 2020 02:26:39 +0000 Received: from us1-rack-iad1.inumbo.com ([172.99.69.81]) by lists.xenproject.org with esmtp (Exim 4.92) (envelope-from ) id 1k8wcf-0002BQ-Up for xen-devel@lists.xenproject.org; Fri, 21 Aug 2020 02:17:41 +0000 X-Inumbo-ID: 9e6247f6-6707-459b-93ea-572b9db4c760 Received: from galois.linutronix.de (unknown [2a0a:51c0:0:12e:550::1]) by us1-rack-iad1.inumbo.com (Halon) with ESMTPS id 9e6247f6-6707-459b-93ea-572b9db4c760; Fri, 21 Aug 2020 02:17:04 +0000 (UTC) Message-Id: <20200821002947.263753263@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1597976223; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=xhbFdhsCsQ5VSYCUiVy99pvX2yN4idfA0I7XlvTQakE=; b=ZHPMzYaPzfOECo836sQFsUmCX7TFv2uj13sv98D4bI8o6iI6WKZs1U7pYv9brD8a4az4fs NyW2wBNkPya+ae9bCFjp09So5OeSSAX52C6juW+HKgm4ymvYeCx/IfVgaDhjbZBDHJN2Y7 N3Ga0P6rEMZqQTiiVOkR3j0KsFCD4vhJzcH9tjRPhCUvVfZb3FJIfpw8yH5bG9MqEf/Vfx HtYfBOCZj0F8653MC9JjGiUq1BCATOsRuRbgl0R92oj6nP6xijsr8QEAN3xNC7i6G9hIwj 93+5AhgyK99DgKHmu6NAF2r5clFidEeEDceyitr+J6fyYTJp9z6GKMouFgvM/g== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1597976223; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: references:references; bh=xhbFdhsCsQ5VSYCUiVy99pvX2yN4idfA0I7XlvTQakE=; b=JYv5Wl4UiPVl3hvzKT1TU9FbgMyvxpUxxeVQ/q1ta3fiBXM7WdZyhJVHsfCIDihr82ihZJ mZtv6aJHBV8/OEAQ== Date: Fri, 21 Aug 2020 02:24:44 +0200 From: Thomas Gleixner To: LKML Cc: x86@kernel.org, Bjorn Helgaas , Lorenzo Pieralisi , Jonathan Derrick , linux-pci@vger.kernel.org, Joerg Roedel , iommu@lists.linux-foundation.org, linux-hyperv@vger.kernel.org, Haiyang Zhang , Jon Derrick , Lu Baolu , Wei Liu , "K. Y. Srinivasan" , Stephen Hemminger , Steve Wahl , Dimitri Sivanich , Russ Anderson , Konrad Rzeszutek Wilk , xen-devel@lists.xenproject.org, Juergen Gross , Boris Ostrovsky , Stefano Stabellini , Marc Zyngier , Greg Kroah-Hartman , "Rafael J. Wysocki" , Megha Dey , Jason Gunthorpe , Dave Jiang , Alex Williamson , Jacob Pan , Baolu Lu , Kevin Tian , Dan Williams Subject: [patch RFC 20/38] PCI: vmd: Mark VMD irqdomain with DOMAIN_BUS_VMD_MSI References: <20200821002424.119492231@linutronix.de> MIME-Version: 1.0 Content-Disposition: inline; filename="PCI--vmd--Mark-VMD-irqdomain-with-DOMAIN_BUS_VMD_PCI.patch" Content-transfer-encoding: 8-bit X-BeenThere: xen-devel@lists.xenproject.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: Xen developer discussion List-Unsubscribe: , List-Post: List-Help: List-Subscribe: , Errors-To: xen-devel-bounces@lists.xenproject.org Sender: "Xen-devel" Devices on the VMD bus use their own MSI irq domain, but it is not distinguishable from regular PCI/MSI irq domains. This is required to exclude VMD devices from getting the irq domain pointer set by interrupt remapping. Override the default bus token. Signed-off-by: Thomas Gleixner Cc: Bjorn Helgaas Cc: Lorenzo Pieralisi Cc: Jonathan Derrick Cc: linux-pci@vger.kernel.org Acked-by: Bjorn Helgaas --- drivers/pci/controller/vmd.c | 6 ++++++ 1 file changed, 6 insertions(+) --- a/drivers/pci/controller/vmd.c +++ b/drivers/pci/controller/vmd.c @@ -579,6 +579,12 @@ static int vmd_enable_domain(struct vmd_ return -ENODEV; } + /* + * Override the irq domain bus token so the domain can be distinguished + * from a regular PCI/MSI domain. + */ + irq_domain_update_bus_token(vmd->irq_domain, DOMAIN_BUS_VMD_MSI); + pci_add_resource(&resources, &vmd->resources[0]); pci_add_resource_offset(&resources, &vmd->resources[1], offset[0]); pci_add_resource_offset(&resources, &vmd->resources[2], offset[1]);