From nobody Thu Nov 13 16:20:00 2025 Delivered-To: importer@patchew.org Received-SPF: pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) client-ip=209.51.188.17; envelope-from=qemu-devel-bounces+importer=patchew.org@nongnu.org; helo=lists.gnu.org; Authentication-Results: mx.zohomail.com; spf=pass (zohomail.com: domain of gnu.org designates 209.51.188.17 as permitted sender) smtp.mailfrom=qemu-devel-bounces+importer=patchew.org@nongnu.org; dmarc=fail(p=none dis=none) header.from=linux.alibaba.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1581348897740710.8261374618942; Mon, 10 Feb 2020 07:34:57 -0800 (PST) Received: from localhost ([::1]:35112 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1j1B5M-00032y-F2 for importer@patchew.org; Mon, 10 Feb 2020 10:34:56 -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 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 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; 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+importer=patchew.org@nongnu.org Sender: "Qemu-devel" Content-Transfer-Encoding: quoted-printable MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" 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, s= truct msi_msg *msg) MSI_DATA_VECTOR(cfg->vector); } =20 -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; } =20 +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. --=20 1.8.3.1