From patchwork Thu Oct 14 00:48:50 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Longpeng(Mike)" X-Patchwork-Id: 12557613 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 2E589C433F5 for ; Thu, 14 Oct 2021 00:53:22 +0000 (UTC) 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 mail.kernel.org (Postfix) with ESMTPS id E0C0061164 for ; Thu, 14 Oct 2021 00:53:21 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org E0C0061164 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=huawei.com Authentication-Results: mail.kernel.org; spf=pass smtp.mailfrom=nongnu.org Received: from localhost ([::1]:56046 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1maozp-0004cJ-1d for qemu-devel@archiver.kernel.org; Wed, 13 Oct 2021 20:53:21 -0400 Received: from eggs.gnu.org ([2001:470:142:3::10]:50162) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1maow5-00076K-Qj for qemu-devel@nongnu.org; Wed, 13 Oct 2021 20:49:30 -0400 Received: from szxga02-in.huawei.com ([45.249.212.188]:3154) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1maow0-0003Kw-IW for qemu-devel@nongnu.org; Wed, 13 Oct 2021 20:49:29 -0400 Received: from dggemv703-chm.china.huawei.com (unknown [172.30.72.57]) by szxga02-in.huawei.com (SkyGuard) with ESMTP id 4HV9dq3bZ4z908L; Thu, 14 Oct 2021 08:44:31 +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 15.1.2308.8; Thu, 14 Oct 2021 08:49:22 +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 15.1.2308.8; Thu, 14 Oct 2021 08:49:21 +0800 From: "Longpeng(Mike)" To: , Subject: [PATCH v4 4/6] kvm: irqchip: extract kvm_irqchip_add_deferred_msi_route Date: Thu, 14 Oct 2021 08:48:50 +0800 Message-ID: <20211014004852.1293-5-longpeng2@huawei.com> X-Mailer: git-send-email 2.25.0.windows.1 In-Reply-To: <20211014004852.1293-1-longpeng2@huawei.com> References: <20211014004852.1293-1-longpeng2@huawei.com> MIME-Version: 1.0 X-Originating-IP: [10.174.148.223] X-ClientProxiedBy: dggems703-chm.china.huawei.com (10.3.19.180) To dggpeml100016.china.huawei.com (7.185.36.216) X-CFilter-Loop: Reflected Received-SPF: pass client-ip=45.249.212.188; envelope-from=longpeng2@huawei.com; helo=szxga02-in.huawei.com X-Spam_score_int: -22 X-Spam_score: -2.3 X-Spam_bar: -- X-Spam_report: (-2.3 / 5.0 requ) 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: 2.1.23 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: "Longpeng\(Mike\)" , arei.gonglei@huawei.com, qemu-devel@nongnu.org, kvm@vger.kernel.org Errors-To: qemu-devel-bounces+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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);