From patchwork Wed Nov 3 08:16:55 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Longpeng(Mike)" X-Patchwork-Id: 12600339 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 990A7C433F5 for ; Wed, 3 Nov 2021 08:17:14 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 815BF60F5A for ; Wed, 3 Nov 2021 08:17:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231716AbhKCITt (ORCPT ); Wed, 3 Nov 2021 04:19:49 -0400 Received: from szxga03-in.huawei.com ([45.249.212.189]:27169 "EHLO szxga03-in.huawei.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231338AbhKCITq (ORCPT ); Wed, 3 Nov 2021 04:19:46 -0400 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.54]) by szxga03-in.huawei.com (SkyGuard) with ESMTP id 4Hkfj71pK3zTgFL; Wed, 3 Nov 2021 16:15:39 +0800 (CST) Received: from dggpeml100016.china.huawei.com (7.185.36.216) by dggemv703-chm.china.huawei.com (10.3.19.46) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Wed, 3 Nov 2021 16:17:08 +0800 Received: from DESKTOP-27KDQMV.china.huawei.com (10.174.148.223) by dggpeml100016.china.huawei.com (7.185.36.216) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2308.15; Wed, 3 Nov 2021 16:17:07 +0800 From: "Longpeng(Mike)" To: , CC: , , , "Longpeng(Mike)" Subject: [PATCH v5 4/6] kvm: irqchip: extract kvm_irqchip_add_deferred_msi_route Date: Wed, 3 Nov 2021 16:16:55 +0800 Message-ID: <20211103081657.1945-5-longpeng2@huawei.com> X-Mailer: git-send-email 2.25.0.windows.1 In-Reply-To: <20211103081657.1945-1-longpeng2@huawei.com> References: <20211103081657.1945-1-longpeng2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.148.223] X-ClientProxiedBy: dggems704-chm.china.huawei.com (10.3.19.181) To dggpeml100016.china.huawei.com (7.185.36.216) X-CFilter-Loop: Reflected Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org Extract a common helper that add MSI route for specific vector but does not commit immediately. Signed-off-by: Longpeng(Mike) --- accel/kvm/kvm-all.c | 15 +++++++++++++-- include/sysemu/kvm.h | 6 ++++++ 2 files changed, 19 insertions(+), 2 deletions(-) diff --git a/accel/kvm/kvm-all.c b/accel/kvm/kvm-all.c index db8d83b..8627f7c 100644 --- a/accel/kvm/kvm-all.c +++ b/accel/kvm/kvm-all.c @@ -1953,7 +1953,7 @@ int kvm_irqchip_send_msi(KVMState *s, MSIMessage msg) return kvm_set_irq(s, route->kroute.gsi, 1); } -int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) +int kvm_irqchip_add_deferred_msi_route(KVMState *s, int vector, PCIDevice *dev) { struct kvm_irq_routing_entry kroute = {}; int virq; @@ -1996,7 +1996,18 @@ int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) kvm_add_routing_entry(s, &kroute); kvm_arch_add_msi_route_post(&kroute, vector, dev); - kvm_irqchip_commit_routes(s); + + return virq; +} + +int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev) +{ + int virq; + + virq = kvm_irqchip_add_deferred_msi_route(s, vector, dev); + if (virq >= 0) { + kvm_irqchip_commit_routes(s); + } return virq; } diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index a1ab1ee..8de0d9a 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -476,6 +476,12 @@ void kvm_init_cpu_signals(CPUState *cpu); * @return: virq (>=0) when success, errno (<0) when failed. */ int kvm_irqchip_add_msi_route(KVMState *s, int vector, PCIDevice *dev); +/** + * Add MSI route for specific vector but does not commit to KVM + * immediately + */ +int kvm_irqchip_add_deferred_msi_route(KVMState *s, int vector, + PCIDevice *dev); int kvm_irqchip_update_msi_route(KVMState *s, int virq, MSIMessage msg, PCIDevice *dev); void kvm_irqchip_commit_routes(KVMState *s);