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 01C7AC352A4 for ; Mon, 10 Feb 2020 09:05:44 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id D3C9E2080C for ; Mon, 10 Feb 2020 09:05:43 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727563AbgBJJFm (ORCPT ); Mon, 10 Feb 2020 04:05:42 -0500 Received: from out30-133.freemail.mail.aliyun.com ([115.124.30.133]:41921 "EHLO out30-133.freemail.mail.aliyun.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727029AbgBJJFi (ORCPT ); Mon, 10 Feb 2020 04:05:38 -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 Cc: mst@redhat.com, jasowang@redhat.com, slp@redhat.com, virtio-dev@lists.oasis-open.org, qemu-devel@nongnu.org, gerry@linux.alibaba.com, zhabin@linux.alibaba.com, jing2.liu@linux.intel.com, chao.p.peng@linux.intel.com 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: Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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