From nobody Tue Feb 10 04:16:50 2026 Delivered-To: importer@patchew.org Authentication-Results: mx.zohomail.com; dkim=fail; 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=redhat.com Return-Path: Received: from lists.gnu.org (lists.gnu.org [209.51.188.17]) by mx.zohomail.com with SMTPS id 1646677426710315.52611237410304; Mon, 7 Mar 2022 10:23:46 -0800 (PST) Received: from localhost ([::1]:33196 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nRI1J-0007IF-HW for importer@patchew.org; Mon, 07 Mar 2022 13:23:45 -0500 Received: from eggs.gnu.org ([209.51.188.92]:55348) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nRHuh-00013b-PN for qemu-devel@nongnu.org; Mon, 07 Mar 2022 13:16:55 -0500 Received: from [2a00:1450:4864:20::62e] (port=33716 helo=mail-ej1-x62e.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nRHud-0005ND-6e for qemu-devel@nongnu.org; Mon, 07 Mar 2022 13:16:55 -0500 Received: by mail-ej1-x62e.google.com with SMTP id kt27so33956347ejb.0 for ; Mon, 07 Mar 2022 10:16:42 -0800 (PST) Received: from avogadro.lan ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id d8-20020a170906304800b006cdf8a1e146sm4983382ejd.217.2022.03.07.10.16.41 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Mon, 07 Mar 2022 10:16:41 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=fjXszMyPdCO8TmuZAfVhiRygjcmH9t+A5T8HqlfmFlU=; b=mXzeOz7VKLbeTtsKp/CvhgLNwQ9+KyPOhKPI1jyiaF+Kar5iQ7Bdsqu8jCKbkaX7bx RL4QV62bQOMXXcd54AukDCCyhfZcJJYn0JjCIWLzdVOLZI2dW+wZg572t3+F/RIvbKIA 0si/5kXI95ZLSR8lZSMN/Iu3MVD7WW88Qy381HLVbbpGBGnQHVXj3zk9rYtQnUo2+Ha/ 3YvXd4CrAjlR491swq2l0kJ0nOXoPK8B9F//jjWUnI7ucPmAFGx99kDlriiZ6rZ4ShgN KdaDBSa2GnhoJnZuYFPH+YRgwHJbgsf5cXAh1quNbztokhwXVnV76G4sIbQGWEnegMv1 gduw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; bh=fjXszMyPdCO8TmuZAfVhiRygjcmH9t+A5T8HqlfmFlU=; b=y5Xy9sNpN5jUDC4y0Tr5b1WzprSzR5D2l850Q59q1nEcHsrAUU/jntUaJRVaomVMP5 eybuGPc5/o4eLpVNVg9oTPzIRO4AQThqk0Pc1iFoCSUMBtXyWtJw5fsMIqci4N1ZptVK ra8mlHenX+yJVXUvrBE0Ahs6QJqRr7YAnSxeE3j9SdTTXbnIfeyJKsSe7UZHOOJ8m69p ZAqvEjvKUmVLrvfHYHY9D+VQlITg09sHO1jIwIuGqhJcAo+U3VM3G8y2b6Hh0LMksc/h 0oFNzowKzxeBfbSgIlSwY+g3NPcUyGbrXOsg9ZAOvVjwiD4DZoTFQjlfkztz/niBPscI DHzA== X-Gm-Message-State: AOAM533UrFNuvEUea5CfZuDcHxIzHnwBqAOfEdocVaDgVzmE8mLvfA0A zcoFZOcQl3ONcEgSWM/63Jkx2ymOKIo= X-Google-Smtp-Source: ABdhPJzf6OKk/sLArOktyh8JvmFEwW6uGpbeKRjdbjQ923+jUy0fL7B3fETP2NyQMh1iC++8MLyPsw== X-Received: by 2002:a17:907:2d11:b0:6da:924b:748f with SMTP id gs17-20020a1709072d1100b006da924b748fmr9797925ejc.584.1646677001966; Mon, 07 Mar 2022 10:16:41 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 08/23] kvm-irqchip: introduce new API to support route change Date: Mon, 7 Mar 2022 19:16:18 +0100 Message-Id: <20220307181633.596898-9-pbonzini@redhat.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220307181633.596898-1-pbonzini@redhat.com> References: <20220307181633.596898-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::62e (failed) 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; Received-SPF: pass client-ip=2a00:1450:4864:20::62e; envelope-from=paolo.bonzini@gmail.com; helo=mail-ej1-x62e.google.com X-Spam_score_int: 0 X-Spam_score: -0.1 X-Spam_bar: / X-Spam_report: (-0.1 / 5.0 requ) BAYES_00=-1.9, DKIM_SIGNED=0.1, DKIM_VALID=-0.1, DKIM_VALID_EF=-0.1, FREEMAIL_FORGED_FROMDOMAIN=0.249, FREEMAIL_FROM=0.001, HEADER_FROM_DIFFERENT_DOMAINS=0.249, PDS_HP_HELO_NORDNS=0.659, RCVD_IN_DNSWL_NONE=-0.0001, RDNS_NONE=0.793, SPF_HELO_NONE=0.001, SPF_PASS=-0.001, T_SCC_BODY_TEXT_LINE=-0.01 autolearn=no 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: , Cc: "Longpeng\(Mike\)" Errors-To: qemu-devel-bounces+importer=patchew.org@nongnu.org Sender: "Qemu-devel" X-ZohoMail-DKIM: fail (Header signature does not verify) X-ZM-MESSAGEID: 1646677427900100001 Content-Type: text/plain; charset="utf-8" From: "Longpeng(Mike)" Paolo suggested adding the new API to support route changes [1]. We should = invoke kvm_irqchip_begin_route_changes() before changing the routes, increasing the KVMRouteChange.changes if the routes are changed, and commit the changes at= last. [1] https://lists.gnu.org/archive/html/qemu-devel/2021-11/msg02898.html Signed-off-by: Longpeng Message-Id: <20220222141116.2091-2-longpeng2@huawei.com> Signed-off-by: Paolo Bonzini --- include/sysemu/kvm.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/include/sysemu/kvm.h b/include/sysemu/kvm.h index 6eb39a088b..36e6d40191 100644 --- a/include/sysemu/kvm.h +++ b/include/sysemu/kvm.h @@ -224,6 +224,11 @@ DECLARE_INSTANCE_CHECKER(KVMState, KVM_STATE, extern KVMState *kvm_state; typedef struct Notifier Notifier; =20 +typedef struct KVMRouteChange { + KVMState *s; + int changes; +} KVMRouteChange; + /* external API */ =20 bool kvm_has_free_slot(MachineState *ms); @@ -494,6 +499,20 @@ int kvm_irqchip_add_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); + +static inline KVMRouteChange kvm_irqchip_begin_route_changes(KVMState *s) +{ + return (KVMRouteChange) { .s =3D s, .changes =3D 0 }; +} + +static inline void kvm_irqchip_commit_route_changes(KVMRouteChange *c) +{ + if (c->changes) { + kvm_irqchip_commit_routes(c->s); + c->changes =3D 0; + } +} + void kvm_irqchip_release_virq(KVMState *s, int virq); =20 int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter); --=20 2.34.1