From patchwork Tue Feb 28 09:39:36 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Denis V. Lunev\" via" X-Patchwork-Id: 13154618 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org 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 smtp.lore.kernel.org (Postfix) with ESMTPS id D85C3C64ED6 for ; Tue, 28 Feb 2023 09:40:51 +0000 (UTC) Received: from localhost ([::1] helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1pWwSp-0002Qe-DK; Tue, 28 Feb 2023 04:40:03 -0500 Received: from eggs.gnu.org ([2001:470:142:3::10]) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pWwSn-0002LF-3U for qemu-devel@nongnu.org; Tue, 28 Feb 2023 04:40:01 -0500 Received: from szxga08-in.huawei.com ([45.249.212.255]) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1pWwSi-0003Bf-Bb for qemu-devel@nongnu.org; Tue, 28 Feb 2023 04:40:00 -0500 Received: from kwepemi100025.china.huawei.com (unknown [172.30.72.54]) by szxga08-in.huawei.com (SkyGuard) with ESMTP id 4PQshd3tBjz16NxQ; Tue, 28 Feb 2023 17:37:05 +0800 (CST) Received: from DESKTOP-27KDQMV.china.huawei.com (10.174.148.223) by kwepemi100025.china.huawei.com (7.221.188.158) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.21; Tue, 28 Feb 2023 17:39:42 +0800 To: , , CC: , , , , , , , Longpeng Subject: [PATCH v1 2/3] kvm-irqchip: use KVMRouteChange API to update msi route Date: Tue, 28 Feb 2023 17:39:36 +0800 Message-ID: <20230228093937.2515-3-longpeng2@huawei.com> X-Mailer: git-send-email 2.25.0.windows.1 In-Reply-To: <20230228093937.2515-1-longpeng2@huawei.com> References: <20230228093937.2515-1-longpeng2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.148.223] X-ClientProxiedBy: dggems705-chm.china.huawei.com (10.3.19.182) To kwepemi100025.china.huawei.com (7.221.188.158) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.255; envelope-from=longpeng2@huawei.com; helo=szxga08-in.huawei.com X-Spam_score_int: -41 X-Spam_score: -4.2 X-Spam_bar: ---- X-Spam_report: (-4.2 / 5.0 requ) BAYES_00=-1.9, RCVD_IN_DNSWL_MED=-2.3, RCVD_IN_MSPIKE_H2=-0.001, SPF_HELO_NONE=0.001, 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: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Reply-to: "Longpeng(Mike)" X-Patchwork-Original-From: "Longpeng(Mike)" via From: "Denis V. Lunev\" via" Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org From: Longpeng The KVMRouteChange API is added by commit 9568690868e ("kvm-irqchip: introduce new API to support route change"). We can also apply it on kvm_irqchip_update_msi_route(), there are no functional changes and we can optimize the virtio-pci core base on this change in the next patch. Signed-off-by: Longpeng --- accel/kvm/kvm-all.c | 10 ++++++---- accel/stubs/kvm-stub.c | 2 +- hw/intc/ioapic.c | 5 +++-- hw/misc/ivshmem.c | 6 ++++-- hw/vfio/pci.c | 5 +++-- hw/virtio/virtio-pci.c | 7 +++++-- include/sysemu/kvm.h | 2 +- target/i386/kvm/kvm.c | 6 ++++-- 8 files changed, 27 insertions(+), 16 deletions(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index 9b26582655..1ed0dc4c9d 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -1820,10 +1820,11 @@ static void kvm_add_routing_entry(KVMState *s, set_gsi(s, entry->gsi); } -static int kvm_update_routing_entry(KVMState *s, +static int kvm_update_routing_entry(KVMRouteChange *c, struct kvm_irq_routing_entry *new_entry) { struct kvm_irq_routing_entry *entry; + KVMState *s = c->s; int n; for (n = 0; n < s->irq_routes->nr; n++) { @@ -1837,6 +1838,7 @@ static int kvm_update_routing_entry(KVMState *s, } *entry = *new_entry; + c->changes++; return 0; } @@ -2046,7 +2048,7 @@ int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev) return virq; } -int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, +int kvm_irqchip_update_msi_route(KVMRouteChange *c, int virq, MSIMessage msg, PCIDevice *dev) { struct kvm_irq_routing_entry kroute = {}; @@ -2075,7 +2077,7 @@ int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, trace_kvm_irqchip_update_msi_route(virq); - return kvm_update_routing_entry(s, &kroute); + return kvm_update_routing_entry(c, &kroute); } static int kvm_irqchip_assign_irqfd(KVMState *s, EventNotifier *event, @@ -2221,7 +2223,7 @@ static int kvm_irqchip_assign_irqfd(KVMState *s, EventNotifier *event, abort(); } -int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg) +int kvm_irqchip_update_msi_route(KVMRouteChange *c, int virq, MSIMessage msg) { return -ENOSYS; } diff --git a/accel/stubs/kvm-stub.c b/accel/stubs/kvm-stub.c index 5d2dd8f351..5bcf98b9ab 100644 --- a/accel/stubs/kvm-stub.c +++ b/accel/stubs/kvm-stub.c @@ -69,7 +69,7 @@ void kvm_irqchip_release_virq(KVMState *s, int virq) { } -int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, +int kvm_irqchip_update_msi_route(KVMRouteChange *c, int virq, MSIMessage msg, PCIDevice *dev) { return -ENOSYS; diff --git a/hw/intc/ioapic.c b/hw/intc/ioapic.c index 264262959d..07b9cf7705 100644 --- a/hw/intc/ioapic.c +++ b/hw/intc/ioapic.c @@ -195,6 +195,7 @@ static void ioapic_update_kvm_routes(IOAPICCommonState *s) int i; if (kvm_irqchip_is_split()) { + KVMRouteChange c = kvm_irqchip_begin_route_changes(kvm_state); for (i = 0; i < IOAPIC_NUM_PINS; i++) { MSIMessage msg; struct ioapic_entry_info info; @@ -202,10 +203,10 @@ static void ioapic_update_kvm_routes(IOAPICCommonState *s) if (!info.masked) { msg.address = info.addr; msg.data = info.data; - kvm_irqchip_update_msi_route(kvm_state, i, msg, NULL); + kvm_irqchip_update_msi_route(&c, i, msg, NULL); } } - kvm_irqchip_commit_routes(kvm_state); + kvm_irqchip_commit_route_changes(&c); } #endif } diff --git a/hw/misc/ivshmem.c b/hw/misc/ivshmem.c index d66d912172..0e9427be42 100644 --- a/hw/misc/ivshmem.c +++ b/hw/misc/ivshmem.c @@ -278,6 +278,7 @@ static int ivshmem_vector_unmask(PCIDevice *dev, unsigned vector, IVShmemState *s = IVSHMEM_COMMON(dev); EventNotifier *n = &s->peers[s->vm_id].eventfds[vector]; MSIVector *v = &s->msi_vectors[vector]; + KVMRouteChange c; int ret; IVSHMEM_DPRINTF("vector unmask %p %d\n", dev, vector); @@ -287,11 +288,12 @@ static int ivshmem_vector_unmask(PCIDevice *dev, unsigned vector, } assert(!v->unmasked); - ret = kvm_irqchip_update_msi_route(kvm_state, v->virq, msg, dev); + c = kvm_irqchip_begin_route_changes(kvm_state); + ret = kvm_irqchip_update_msi_route(&c, v->virq, msg, dev); if (ret < 0) { return ret; } - kvm_irqchip_commit_routes(kvm_state); + kvm_irqchip_commit_route_changes(&c); ret = kvm_irqchip_add_irqfd_notifier_gsi(kvm_state, n, NULL, v->virq); if (ret < 0) { diff --git a/hw/vfio/pci.c b/hw/vfio/pci.c index 939dcc3d4a..fb69cc9965 100644 --- a/hw/vfio/pci.c +++ b/hw/vfio/pci.c @@ -460,8 +460,9 @@ static void vfio_remove_kvm_msi_virq(VFIOMSIVector *vector) static void vfio_update_kvm_msi_virq(VFIOMSIVector *vector, MSIMessage msg, PCIDevice *pdev) { - kvm_irqchip_update_msi_route(kvm_state, vector->virq, msg, pdev); - kvm_irqchip_commit_routes(kvm_state); + KVMRouteChange c = kvm_irqchip_begin_route_changes(kvm_state); + kvm_irqchip_update_msi_route(&c, vector->virq, msg, pdev); + kvm_irqchip_commit_route_changes(&c); } static int vfio_msix_vector_do_use(PCIDevice *pdev, unsigned int nr, diff --git a/hw/virtio/virtio-pci.c b/hw/virtio/virtio-pci.c index 22e76e3902..5fd02b7cb8 100644 --- a/hw/virtio/virtio-pci.c +++ b/hw/virtio/virtio-pci.c @@ -990,12 +990,15 @@ static int virtio_pci_one_vector_unmask(VirtIOPCIProxy *proxy, if (proxy->vector_irqfd) { irqfd = &proxy->vector_irqfd[vector]; if (irqfd->msg.data != msg.data || irqfd->msg.address != msg.address) { - ret = kvm_irqchip_update_msi_route(kvm_state, irqfd->virq, msg, + virtio_pci_begin_route_changes(); + ret = kvm_irqchip_update_msi_route(&virtio_pci_route_change, + irqfd->virq, msg, &proxy->pci_dev); if (ret < 0) { + virtio_pci_commit_route_changes(); return ret; } - kvm_irqchip_commit_routes(kvm_state); + virtio_pci_commit_route_changes(); } } diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index e9a97eda8c..4c52a39efa 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -494,7 +494,7 @@ void kvm_init_cpu_signals(CPUState *cpu); * @return: virq (>=0) when success, errno (<0) when failed. */ int kvm_irqchip_add_msi_route(KVMRouteChange *c, int vector, PCIDevice *dev); -int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, +int kvm_irqchip_update_msi_route(KVMRouteChange *c, int virq, MSIMessage msg, PCIDevice *dev); void kvm_irqchip_commit_routes(KVMState *s); diff --git a/target/i386/kvm/kvm.c b/target/i386/kvm/kvm.c index 5870301991..ceb61badb4 100644 --- a/target/i386/kvm/kvm.c +++ b/target/i386/kvm/kvm.c @@ -5532,9 +5532,11 @@ static void kvm_update_msi_routes_all(void *private, bool global, { int cnt = 0, vector; MSIRouteEntry *entry; + KVMRouteChange c; MSIMessage msg; PCIDevice *dev; + c = kvm_irqchip_begin_route_changes(kvm_state); /* TODO: explicit route update */ QLIST_FOREACH(entry, &msi_route_list, list) { cnt++; @@ -5551,9 +5553,9 @@ static void kvm_update_msi_routes_all(void *private, bool global, */ continue; } - kvm_irqchip_update_msi_route(kvm_state, entry->virq, msg, dev); + kvm_irqchip_update_msi_route(&c, entry->virq, msg, dev); } - kvm_irqchip_commit_routes(kvm_state); + kvm_irqchip_commit_route_changes(&c); trace_kvm_x86_update_msi_routes(cnt); }