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 X-Spam-Level: X-Spam-Status: No, score=-6.5 required=3.0 tests=BAYES_00,DKIM_INVALID, DKIM_SIGNED,HEADER_FROM_DIFFERENT_DOMAINS,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED autolearn=no autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id C4F02C433E3 for ; Fri, 21 Aug 2020 02:17:06 +0000 (UTC) Received: from fraxinus.osuosl.org (smtp4.osuosl.org [140.211.166.137]) (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 9BD312075E for ; Fri, 21 Aug 2020 02:17:06 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=fail reason="signature verification failed" (2048-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="yE78YKBW"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="WP3SvXjr" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 9BD312075E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linutronix.de Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=iommu-bounces@lists.linux-foundation.org Received: from localhost (localhost [127.0.0.1]) by fraxinus.osuosl.org (Postfix) with ESMTP id 715FA86CDB; Fri, 21 Aug 2020 02:17:06 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from fraxinus.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 8gWPMJarC5hu; Fri, 21 Aug 2020 02:17:05 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by fraxinus.osuosl.org (Postfix) with ESMTP id DC6B186CD2; Fri, 21 Aug 2020 02:17:05 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id B9965C0894; Fri, 21 Aug 2020 02:17:05 +0000 (UTC) Received: from whitealder.osuosl.org (smtp1.osuosl.org [140.211.166.138]) by lists.linuxfoundation.org (Postfix) with ESMTP id 1A56BC0051 for ; Fri, 21 Aug 2020 02:17:04 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by whitealder.osuosl.org (Postfix) with ESMTP id 16F9A8869C for ; Fri, 21 Aug 2020 02:17:04 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from whitealder.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id 9N47WQ0RojtT for ; Fri, 21 Aug 2020 02:17:03 +0000 (UTC) X-Greylist: domain auto-whitelisted by SQLgrey-1.7.6 Received: from galois.linutronix.de (Galois.linutronix.de [193.142.43.55]) by whitealder.osuosl.org (Postfix) with ESMTPS id 704C988691 for ; Fri, 21 Aug 2020 02:17:03 +0000 (UTC) Message-Id: <20200821002947.168173557@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1597976221; 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=Xil47Xitq/gy2CFriIqkg6fmKg4rUeNmWQC3UIIAE6w=; b=yE78YKBWeQJNRno/mhgAqmoyeOTKFwnOmAuRZQ5SkOa0rdPcXDsezUiMafpbmddhT8YtRx Q48PBPl5MCz8RE+vKQS6FvAoswzKSqltLT8dz4hEt8NfisI3WqmgK4DKoERYansXMAOCPd EwBdwb4DFqgc98F1KE4se7KtWer9ytqTsAhj9vGzByVYJQv/UCteKvlg8RR+c36Z6ixDcJ BD6gKlCjCebIEAR5oyxn66+VkJnohi7LOi/o0l5x7UMgjimXfDEJyg400bRHlBN1oBEuWP fTTG6828E//dV9xRZEjoWhFP+b/n2Z4ZMMIf+ezYaZKeZkEJp8dyTlXQ87/pZg== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1597976221; 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=Xil47Xitq/gy2CFriIqkg6fmKg4rUeNmWQC3UIIAE6w=; b=WP3SvXjrxQ5y0nFAbsID3Pj/5cUANa6inm+6T4+n98lsoiLiw/u7pX1jx+Twz/Mxho32Av rocr6eby1iKkoNCA== Date: Fri, 21 Aug 2020 02:24:43 +0200 From: Thomas Gleixner To: LKML Subject: [patch RFC 19/38] irqdomain/msi: Provide DOMAIN_BUS_VMD_MSI References: <20200821002424.119492231@linutronix.de> MIME-Version: 1.0 Content-Disposition: inline; filename="genirq-msi--Provide-DOMAIN_BUS_VMD_MSI.patch" Cc: Dimitri Sivanich , linux-hyperv@vger.kernel.org, Steve Wahl , linux-pci@vger.kernel.org, "K. Y. Srinivasan" , Dan Williams , Wei Liu , Stephen Hemminger , Baolu Lu , Marc Zyngier , x86@kernel.org, Jason Gunthorpe , Megha Dey , xen-devel@lists.xenproject.org, Kevin Tian , Konrad Rzeszutek Wilk , Haiyang Zhang , Alex Williamson , Stefano Stabellini , Bjorn Helgaas , Dave Jiang , Boris Ostrovsky , Jonathan Derrick , Juergen Gross , Russ Anderson , Greg Kroah-Hartman , iommu@lists.linux-foundation.org, Jacob Pan , "Rafael J. Wysocki" X-BeenThere: iommu@lists.linux-foundation.org X-Mailman-Version: 2.1.15 Precedence: list List-Id: Development issues for Linux IOMMU support List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Errors-To: iommu-bounces@lists.linux-foundation.org Sender: "iommu" PCI devices behind a VMD bus are not subject to interrupt remapping, but the irq domain for VMD MSI cannot be distinguished from a regular PCI/MSI irq domain. Add a new domain bus token and allow it in the bus token check in msi_check_reservation_mode() to keep the functionality the same once VMD uses this token. Signed-off-by: Thomas Gleixner Cc: Jon Derrick --- include/linux/irqdomain.h | 1 + kernel/irq/msi.c | 7 ++++++- 2 files changed, 7 insertions(+), 1 deletion(-) --- a/include/linux/irqdomain.h +++ b/include/linux/irqdomain.h @@ -84,6 +84,7 @@ enum irq_domain_bus_token { DOMAIN_BUS_FSL_MC_MSI, DOMAIN_BUS_TI_SCI_INTA_MSI, DOMAIN_BUS_WAKEUP, + DOMAIN_BUS_VMD_MSI, }; /** --- a/kernel/irq/msi.c +++ b/kernel/irq/msi.c @@ -370,8 +370,13 @@ static bool msi_check_reservation_mode(s { struct msi_desc *desc; - if (domain->bus_token != DOMAIN_BUS_PCI_MSI) + switch(domain->bus_token) { + case DOMAIN_BUS_PCI_MSI: + case DOMAIN_BUS_VMD_MSI: + break; + default: return false; + } if (!(info->flags & MSI_FLAG_MUST_REACTIVATE)) return false; _______________________________________________ iommu mailing list iommu@lists.linux-foundation.org https://lists.linuxfoundation.org/mailman/listinfo/iommu