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 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 10729C433E4 for ; Wed, 26 Aug 2020 12:01:46 +0000 (UTC) Received: from hemlock.osuosl.org (smtp2.osuosl.org [140.211.166.133]) (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 DA4D120838 for ; Wed, 26 Aug 2020 12:01:45 +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="eJn39pF+"; dkim=permerror (0-bit key) header.d=linutronix.de header.i=@linutronix.de header.b="hT/OBr4e" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org DA4D120838 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 hemlock.osuosl.org (Postfix) with ESMTP id C935888031; Wed, 26 Aug 2020 12:01:45 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from hemlock.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id Iwa19LWneJKI; Wed, 26 Aug 2020 12:01:45 +0000 (UTC) Received: from lists.linuxfoundation.org (lf-lists.osuosl.org [140.211.9.56]) by hemlock.osuosl.org (Postfix) with ESMTP id 4EB7886EC8; Wed, 26 Aug 2020 12:01:45 +0000 (UTC) Received: from lf-lists.osuosl.org (localhost [127.0.0.1]) by lists.linuxfoundation.org (Postfix) with ESMTP id 3719BC0891; Wed, 26 Aug 2020 12:01:45 +0000 (UTC) Received: from silver.osuosl.org (smtp3.osuosl.org [140.211.166.136]) by lists.linuxfoundation.org (Postfix) with ESMTP id 4904DC07FF for ; Wed, 26 Aug 2020 12:01:40 +0000 (UTC) Received: from localhost (localhost [127.0.0.1]) by silver.osuosl.org (Postfix) with ESMTP id 17AC4228BD for ; Wed, 26 Aug 2020 12:01:40 +0000 (UTC) X-Virus-Scanned: amavisd-new at osuosl.org Received: from silver.osuosl.org ([127.0.0.1]) by localhost (.osuosl.org [127.0.0.1]) (amavisd-new, port 10024) with ESMTP id vtiFveMGjIvo for ; Wed, 26 Aug 2020 12:01:33 +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 silver.osuosl.org (Postfix) with ESMTPS id 73C072279B for ; Wed, 26 Aug 2020 12:01:25 +0000 (UTC) Message-Id: <20200826112332.954409970@linutronix.de> DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020; t=1598443283; 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=ua6NqpYSmZApI6uP+18lDgw4EnjAETLTuYc3KhfX2+w=; b=eJn39pF++R7y4RiJv9aME9HZXKzf7AMtx9gOIQ/KZhoM3Ld0hlH/DnKGJSmV3hVK7ueYqX g1TpG290lPqFhzmAKo6hqVmPwqEyrX7rt/PhmQiixSoeLrqPBxlBTb7V5nlKo9FeeO68w9 P+nP/kWZ0Q3FfsrwOaftJfMc0rekm49YPAwe1NBLe4ss62eDgjZkUMH5SBARbrLVSeCsHW 9wSFLRhkhyvmHyqMypfoAkbY6kL/Y1hZFdrfo2aarMJtV0+1qhqRZ+WGFKj/hsCV4En27V zyFSS2ZxL7C8PQ53C1/a/Tt9WRdp2fAapfBPmUw2+7K8K2Qi+jcv21W0IVT5RQ== DKIM-Signature: v=1; a=ed25519-sha256; c=relaxed/relaxed; d=linutronix.de; s=2020e; t=1598443283; 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=ua6NqpYSmZApI6uP+18lDgw4EnjAETLTuYc3KhfX2+w=; b=hT/OBr4eTGEXyMwMWWHmsjom0DAsmwGAPtkbOlxE5LrlE3lHi77XHAXMud4bbKn68MLXI3 kEfd4yz3w6MRPuDQ== Date: Wed, 26 Aug 2020 13:16:51 +0200 From: Thomas Gleixner To: LKML Subject: [patch V2 23/46] irqdomain/msi: Provide DOMAIN_BUS_VMD_MSI References: <20200826111628.794979401@linutronix.de> MIME-Version: 1.0 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 , Jon 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" From: Thomas Gleixner 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 --- 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