{"id":2228633,"url":"http://patchwork.ozlabs.org/api/1.1/patches/2228633/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427070029.1059386-5-gaosong@loongson.cn/","project":{"id":14,"url":"http://patchwork.ozlabs.org/api/1.1/projects/14/?format=json","name":"QEMU Development","link_name":"qemu-devel","list_id":"qemu-devel.nongnu.org","list_email":"qemu-devel@nongnu.org","web_url":"","scm_url":"","webscm_url":""},"msgid":"<20260427070029.1059386-5-gaosong@loongson.cn>","date":"2026-04-27T07:00:29","name":"[4/4] Add dintc kvm_irqchip_in_kernel support","commit_ref":null,"pull_url":null,"state":"new","archived":false,"hash":"bf134122fbe3a77b941714d26ca6b0b67544c248","submitter":{"id":82024,"url":"http://patchwork.ozlabs.org/api/1.1/people/82024/?format=json","name":"Song Gao","email":"gaosong@loongson.cn"},"delegate":null,"mbox":"http://patchwork.ozlabs.org/project/qemu-devel/patch/20260427070029.1059386-5-gaosong@loongson.cn/mbox/","series":[{"id":501589,"url":"http://patchwork.ozlabs.org/api/1.1/series/501589/?format=json","web_url":"http://patchwork.ozlabs.org/project/qemu-devel/list/?series=501589","date":"2026-04-27T07:00:28","name":"LoongArch : Add KVM DINTC support","version":1,"mbox":"http://patchwork.ozlabs.org/series/501589/mbox/"}],"comments":"http://patchwork.ozlabs.org/api/patches/2228633/comments/","check":"pending","checks":"http://patchwork.ozlabs.org/api/patches/2228633/checks/","tags":{},"headers":{"Return-Path":"","X-Original-To":"incoming@patchwork.ozlabs.org","Delivered-To":"patchwork-incoming@legolas.ozlabs.org","Authentication-Results":"legolas.ozlabs.org;\n spf=pass (sender SPF authorized) smtp.mailfrom=nongnu.org\n (client-ip=209.51.188.17; helo=lists1p.gnu.org;\n envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org;\n receiver=patchwork.ozlabs.org)","Received":["from lists1p.gnu.org (lists1p.gnu.org [209.51.188.17])\n\t(using TLSv1.2 with cipher ECDHE-ECDSA-AES256-GCM-SHA384 (256/256 bits))\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g3wBc1qwGz1xvV\n\tfor ; Mon, 27 Apr 2026 17:27:36 +1000 (AEST)","from localhost ([::1] helo=lists1p.gnu.org)\n\tby lists1p.gnu.org with esmtp (Exim 4.90_1)\n\t(envelope-from )\n\tid 1wHGMh-0006AE-KR; Mon, 27 Apr 2026 03:26:47 -0400","from eggs.gnu.org ([2001:470:142:3::10])\n by lists1p.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256)\n (Exim 4.90_1) (envelope-from )\n id 1wHGMd-00069B-7P\n for qemu-devel@nongnu.org; Mon, 27 Apr 2026 03:26:43 -0400","from mail.loongson.cn ([114.242.206.163])\n by eggs.gnu.org with esmtp (Exim 4.90_1)\n (envelope-from ) id 1wHGMb-00028L-3o\n for qemu-devel@nongnu.org; Mon, 27 Apr 2026 03:26:42 -0400","from loongson.cn (unknown [10.2.5.185])\n by gateway (Coremail) with SMTP id _____8CxReirD+9pTUQEAA--.8578S3;\n Mon, 27 Apr 2026 15:26:35 +0800 (CST)","from localhost.localdomain (unknown [10.2.5.185])\n by front1 (Coremail) with SMTP id qMiowJAxHMKbD+9pqJN1AA--.25769S6;\n Mon, 27 Apr 2026 15:26:34 +0800 (CST)"],"From":"Song Gao ","To":"maobibo@loongson.cn","Cc":"qemu-devel@nongnu.org,\n\tlixianglai@loongson.cn,\n\tchenhuacai@loongson.cn","Subject":"[PATCH 4/4] Add dintc kvm_irqchip_in_kernel support","Date":"Mon, 27 Apr 2026 15:00:29 +0800","Message-Id":"<20260427070029.1059386-5-gaosong@loongson.cn>","X-Mailer":"git-send-email 2.39.1","In-Reply-To":"<20260427070029.1059386-1-gaosong@loongson.cn>","References":"<20260427070029.1059386-1-gaosong@loongson.cn>","MIME-Version":"1.0","Content-Transfer-Encoding":"8bit","X-CM-TRANSID":"qMiowJAxHMKbD+9pqJN1AA--.25769S6","X-CM-SenderInfo":"5jdr20tqj6z05rqj20fqof0/","X-Coremail-Antispam":"1Uk129KBjDUn29KB7ZKAUJUUUUU529EdanIXcx71UUUUU7KY7\n ZEXasCq-sGcSsGvfJ3UbIjqfuFe4nvWSU5nxnvy29KBjDU0xBIdaVrnUUvcSsGvfC2Kfnx\n nUUI43ZEXa7xR_UUUUUUUUU==","Received-SPF":"pass client-ip=114.242.206.163;\n envelope-from=gaosong@loongson.cn;\n helo=mail.loongson.cn","X-Spam_score_int":"-18","X-Spam_score":"-1.9","X-Spam_bar":"-","X-Spam_report":"(-1.9 / 5.0 requ) BAYES_00=-1.9, SPF_HELO_NONE=0.001,\n SPF_PASS=-0.001 autolearn=ham autolearn_force=no","X-Spam_action":"no action","X-BeenThere":"qemu-devel@nongnu.org","X-Mailman-Version":"2.1.29","Precedence":"list","List-Id":"qemu development ","List-Unsubscribe":",\n ","List-Archive":"","List-Post":"","List-Help":"","List-Subscribe":",\n ","Errors-To":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org","Sender":"qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org"},"content":"Function kvm_dintc_realize() is added if kvm_irqchip_in_kernel is\nset. It is to create and initialize DINTC device in kernel mode.\nand use kvm_irqchip_send_msi() to send msi to kernel.\n\nSigned-off-by: Song Gao \n---\n hw/intc/loongarch_dintc.c | 13 +++++++++\n hw/intc/loongarch_dintc_kvm.c | 48 +++++++++++++++++++++++++++++++\n hw/intc/meson.build | 2 ++\n include/hw/intc/loongarch_dintc.h | 10 +++++++\n 4 files changed, 73 insertions(+)\n create mode 100644 hw/intc/loongarch_dintc_kvm.c","diff":"diff --git a/hw/intc/loongarch_dintc.c b/hw/intc/loongarch_dintc.c\nindex c42a919df4..b8bd7ae015 100644\n--- a/hw/intc/loongarch_dintc.c\n+++ b/hw/intc/loongarch_dintc.c\n@@ -53,6 +53,15 @@ static void loongarch_dintc_mem_write(void *opaque, hwaddr addr,\n cs = cpu_by_arch_id(cpu_num);\n irq_num = FIELD_EX64(msg_addr, MSG_ADDR, IRQ_NUM);\n \n+ if (kvm_irqchip_in_kernel()) {\n+ MSIMessage msg;\n+\n+ msg.address = msg_addr;\n+ msg.data = val;\n+ kvm_irqchip_send_msi(kvm_state, msg);\n+ return;\n+ }\n+\n async_run_on_cpu(cs, do_set_vcpu_dintc_irq,\n RUN_ON_CPU_HOST_INT(irq_num));\n qemu_set_irq(s->cpu[cpu_num].parent_irq, 1);\n@@ -95,6 +104,10 @@ static void loongarch_dintc_realize(DeviceState *dev, Error **errp)\n qdev_init_gpio_out(dev, &s->cpu[i].parent_irq, 1);\n }\n \n+ if (kvm_irqchip_in_kernel()) {\n+ kvm_dintc_realize(dev, errp);\n+ }\n+\n return;\n }\n \ndiff --git a/hw/intc/loongarch_dintc_kvm.c b/hw/intc/loongarch_dintc_kvm.c\nnew file mode 100644\nindex 0000000000..1137bcd9a6\n--- /dev/null\n+++ b/hw/intc/loongarch_dintc_kvm.c\n@@ -0,0 +1,48 @@\n+/* SPDX-License-Identifier: GPL-2.0-or-later */\n+/*\n+ * LoongArch DINTC interrupt kvm support\n+ *\n+ * Copyright (C) 2025 Loongson Technology Corporation Limited\n+ */\n+\n+#include \"qemu/osdep.h\"\n+#include \"hw/intc/loongarch_dintc.h\"\n+#include \"linux/kvm.h\"\n+#include \"qapi/error.h\"\n+#include \"system/kvm.h\"\n+\n+void kvm_dintc_realize(DeviceState *dev, Error **errp)\n+{\n+ LoongArchDINTCState *lds = LOONGARCH_DINTC(dev);\n+ int ret;\n+\n+ ret = kvm_create_device(kvm_state, KVM_DEV_TYPE_LOONGARCH_DMSINTC, false);\n+ if (ret < 0) {\n+ fprintf(stderr, \"create KVM_DEV_TYPE_LOONGARCH_AVEC failed: %s\\n\",\n+ strerror(-ret));\n+ abort();\n+ }\n+ lds->dev_fd = ret;\n+\n+ /* init dintc config */\n+ lds->msg_addr_base = VIRT_DINTC_BASE;\n+ lds->msg_addr_size = VIRT_DINTC_SIZE;\n+\n+ ret = kvm_device_access(lds->dev_fd, KVM_DEV_LOONGARCH_DMSINTC_GRP_CTRL,\n+ KVM_DEV_LOONGARCH_DMSINTC_MSG_ADDR_BASE,\n+ &lds->msg_addr_base, true, NULL);\n+ if (ret < 0) {\n+ fprintf(stderr, \"KVM_DEV_LOONGARCH_DINTC_MSG_ADDR_BASE failed: %s\\n\",\n+ strerror(ret));\n+ abort();\n+ }\n+\n+ ret = kvm_device_access(lds->dev_fd, KVM_DEV_LOONGARCH_DMSINTC_GRP_CTRL,\n+ KVM_DEV_LOONGARCH_DMSINTC_MSG_ADDR_SIZE,\n+ &lds->msg_addr_size, true, NULL);\n+ if (ret < 0) {\n+ fprintf(stderr, \"KVM_DEV_LOONGARCH_DINTC_MSG_ADDR_SIZE failed: %s\\n\",\n+ strerror(ret));\n+ abort();\n+ }\n+}\ndiff --git a/hw/intc/meson.build b/hw/intc/meson.build\nindex 96742df090..015c1e67e4 100644\n--- a/hw/intc/meson.build\n+++ b/hw/intc/meson.build\n@@ -82,3 +82,5 @@ specific_ss.add(when: 'CONFIG_LOONGARCH_EXTIOI', if_true: files('loongarch_extio\n specific_ss.add(when: ['CONFIG_KVM', 'CONFIG_LOONGARCH_EXTIOI'],\n if_true: files('loongarch_extioi_kvm.c'))\n specific_ss.add(when: 'CONFIG_LOONGARCH_DINTC', if_true: files('loongarch_dintc.c'))\n+specific_ss.add(when: ['CONFIG_KVM', 'CONFIG_LOONGARCH_DINTC'],\n+ if_true: files('loongarch_dintc_kvm.c'))\ndiff --git a/include/hw/intc/loongarch_dintc.h b/include/hw/intc/loongarch_dintc.h\nindex 1f4f65705a..95a7879e26 100644\n--- a/include/hw/intc/loongarch_dintc.h\n+++ b/include/hw/intc/loongarch_dintc.h\n@@ -9,8 +9,13 @@\n #include \"hw/core/sysbus.h\"\n #include \"hw/loongarch/virt.h\"\n #include \"system/memory.h\"\n+#include \"hw/pci-host/ls7a.h\"\n \n #define NR_VECTORS 256\n+#define IRQ_BIT_BASE 5\n+#define IRQ_BIT_LEN 8\n+#define CPU_BIT_BASE 13\n+#define CPU_BIT_LEN 8\n \n #define TYPE_LOONGARCH_DINTC \"loongarch_dintc\"\n OBJECT_DECLARE_TYPE(LoongArchDINTCState, LoongArchDINTCClass, LOONGARCH_DINTC)\n@@ -25,7 +30,10 @@ struct LoongArchDINTCState {\n SysBusDevice parent_obj;\n MemoryRegion dintc_mmio;\n DINTCCore *cpu;\n+ int dev_fd;\n uint32_t num_cpu;\n+ uint64_t msg_addr_base;\n+ uint64_t msg_addr_size;\n };\n \n struct LoongArchDINTCClass {\n@@ -34,3 +42,5 @@ struct LoongArchDINTCClass {\n DeviceRealize parent_realize;\n DeviceUnrealize parent_unrealize;\n };\n+\n+void kvm_dintc_realize(DeviceState *dev, Error **errp);\n","prefixes":["4/4"]}