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=-9.8 required=3.0 tests=HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS, UNPARSEABLE_RELAY,USER_AGENT_GIT autolearn=ham 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 640EDC352A3 for ; Mon, 10 Feb 2020 15:34:54 +0000 (UTC) Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) (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 36E3320715 for ; Mon, 10 Feb 2020 15:34:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 36E3320715 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=linux.alibaba.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Received: from localhost ([::1]:35112 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1B5J-00032y-DN for qemu-devel@archiver.kernel.org; Mon, 10 Feb 2020 10:34:53 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]:41629) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j150s-00078x-Qm for qemu-devel@nongnu.org; Mon, 10 Feb 2020 04:05:55 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1j150n-0004IP-Pq for qemu-devel@nongnu.org; Mon, 10 Feb 2020 04:05:50 -0500 Received: from out4436.biz.mail.alibaba.com ([47.88.44.36]:33718) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1j150n-0004BN-GT for qemu-devel@nongnu.org; Mon, 10 Feb 2020 04:05:49 -0500 X-Alimail-AntiSpam: AC=PASS; BC=-1|-1; BR=01201311R181e4; CH=green; DM=||false|; DS=||; FP=0|-1|-1|-1|0|-1|-1|-1; HT=e01f04397; MF=zhabin@linux.alibaba.com; NM=1; PH=DS; RN=10; SR=0; TI=SMTPD_---0TpbD1jB_1581325533; Received: from localhost(mailfrom:zhabin@linux.alibaba.com fp:SMTPD_---0TpbD1jB_1581325533) by smtp.aliyun-inc.com(127.0.0.1); Mon, 10 Feb 2020 17:05:33 +0800 From: Zha Bin To: linux-kernel@vger.kernel.org Subject: [PATCH v2 5/5] x86: virtio-mmio: support virtio-mmio with MSI for x86 Date: Mon, 10 Feb 2020 17:05:21 +0800 Message-Id: <946b71e77a34666a9b8c419c5a467d1628b50fa0.1581305609.git.zhabin@linux.alibaba.com> X-Mailer: git-send-email 1.8.3.1 In-Reply-To: References: In-Reply-To: References: X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x X-Received-From: 47.88.44.36 X-Mailman-Approved-At: Mon, 10 Feb 2020 10:31:30 -0500 X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: virtio-dev@lists.oasis-open.org, zhabin@linux.alibaba.com, slp@redhat.com, mst@redhat.com, jasowang@redhat.com, jing2.liu@linux.intel.com, qemu-devel@nongnu.org, chao.p.peng@linux.intel.com, gerry@linux.alibaba.com Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" From: Liu Jiang virtio-mmio supports a generic MSI irq domain for all archs. This patch adds the x86 architecture support. Signed-off-by: Liu Jiang Co-developed-by: Zha Bin Signed-off-by: Zha Bin Co-developed-by: Jing Liu Signed-off-by: Jing Liu Co-developed-by: Chao Peng Signed-off-by: Chao Peng --- arch/x86/kernel/apic/msi.c | 11 ++++++++++- 1 file changed, 10 insertions(+), 1 deletion(-) diff --git a/arch/x86/kernel/apic/msi.c b/arch/x86/kernel/apic/msi.c index 159bd0c..2fcd602 100644 --- a/arch/x86/kernel/apic/msi.c +++ b/arch/x86/kernel/apic/msi.c @@ -45,7 +45,11 @@ static void __irq_msi_compose_msg(struct irq_cfg *cfg, struct msi_msg *msg) MSI_DATA_VECTOR(cfg->vector); } -static void irq_msi_compose_msg(struct irq_data *data, struct msi_msg *msg) +/* + * x86 PCI-MSI/HPET/DMAR related method. + * Also can be used as arch specific method for virtio-mmio MSI. + */ +void irq_msi_compose_msg(struct irq_data *data, struct msi_msg *msg) { __irq_msi_compose_msg(irqd_cfg(data), msg); } @@ -166,6 +170,11 @@ static void irq_msi_update_msg(struct irq_data *irqd, struct irq_cfg *cfg) return ret; } +struct irq_domain *arch_msi_root_irq_domain(void) +{ + return x86_vector_domain; +} + /* * IRQ Chip for MSI PCI/PCI-X/PCI-Express Devices, * which implement the MSI or MSI-X Capability Structure. -- 1.8.3.1