From mboxrd@z Thu Jan 1 00:00:00 1970 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 E1E07C433EF for ; Wed, 2 Mar 2022 18:33:38 +0000 (UTC) Received: from localhost ([::1]:44276 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nPTn8-0005qj-2Q for qemu-devel@archiver.kernel.org; Wed, 02 Mar 2022 13:33:38 -0500 Received: from eggs.gnu.org ([209.51.188.92]:59898) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nPTS6-0006vI-DH for qemu-devel@nongnu.org; Wed, 02 Mar 2022 13:11:54 -0500 Received: from [2a00:1450:4864:20::32a] (port=38466 helo=mail-wm1-x32a.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nPTS4-0008R2-Oh for qemu-devel@nongnu.org; Wed, 02 Mar 2022 13:11:54 -0500 Received: by mail-wm1-x32a.google.com with SMTP id m42-20020a05600c3b2a00b00382ab337e14so2673740wms.3 for ; Wed, 02 Mar 2022 10:11:52 -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=k1gSHolGROPk/DnTfWnvyQRMaXlh+MQ0c0cVgplopHG6IucOBu6ar+d6tnQdSKQGaE CFo6H0KalOv696C3JdXPq4wgln+0EPfhHt0x/lOora8WCCeOH+3rX8y959HyjjBFf/EN OaVjBnrPLB9BWlZ17SedYgl5XqAniWViXa41PTdUCahrWv4n4tbS3fYCrafBEtU0fKIQ 3eEOz0+GzUb35v3N2iGvaVB7cXgPzlqigyWrdI74UDp33ds3xT7NlIyIUPsdECMXltBJ bGhv9ahe2MsjIvwSZKxKK7JWDggBFkggwl4SVSbDih/jmr5nkBR6GJ9Rwo/v7paUa/sI m8HA== 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=3PtgtEiDClzRaXhjltoTcC7JpDwqcVk3XMRhpuwzJEpboPtLWDy7WHW8e+7QJfkNE4 0P1ZZpzZn5XR/kyhscXLsjCp0cbfwkZElyThGeBgPJgKDMAMqwhvQN6sVtoVEZLvmGgt 5V6UG3slQBPQBUp6zRbwct3ITyCUhVc93YTAHNQpDnj3/8ICCpe+FTCsuYRjGGqPUkwr R7xPkJlUx388pWAOUMugrTTw9/lmE+2ifI4N8oqB6aJvBQDAbX+LG7fqxdr71AH37ba9 +PgcZVTulSz2Fk5+kUYd6LaniWllqu8GCPJWH33MOprF8yyPdxd+LAHmDjoTIKEPQ/KQ An+g== X-Gm-Message-State: AOAM531PaLpajbg6AhvBhmzs24JhG9FndhFUMoCHR27TJWpvqHkTZLvA u+41gZpl0SBVRdjNCJoSTUbTPv2GIWQ= X-Google-Smtp-Source: ABdhPJzZ+lItZogudVbnAiV/KmCslITI0xdAD0YtBr7UevT/iqxEYfMX7srpExCBGPpFJUTh159q+Q== X-Received: by 2002:a7b:c939:0:b0:37b:c13f:6fa3 with SMTP id h25-20020a7bc939000000b0037bc13f6fa3mr841405wml.72.1646244711332; Wed, 02 Mar 2022 10:11:51 -0800 (PST) Received: from avogadro.lan ([2001:b07:6468:f312:5e2c:eb9a:a8b6:fd3e]) by smtp.gmail.com with ESMTPSA id bg20-20020a05600c3c9400b0037fa5c422c8sm7720811wmb.48.2022.03.02.10.11.50 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 02 Mar 2022 10:11:50 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 08/11] kvm-irqchip: introduce new API to support route change Date: Wed, 2 Mar 2022 19:11:31 +0100 Message-Id: <20220302181134.285107-9-pbonzini@redhat.com> X-Mailer: git-send-email 2.34.1 In-Reply-To: <20220302181134.285107-1-pbonzini@redhat.com> References: <20220302181134.285107-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::32a (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::32a; envelope-from=paolo.bonzini@gmail.com; helo=mail-wm1-x32a.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+qemu-devel=archiver.kernel.org@nongnu.org Sender: "Qemu-devel" 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; +typedef struct KVMRouteChange { + KVMState *s; + int changes; +} KVMRouteChange; + /* external API */ 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 = s, .changes = 0 }; +} + +static inline void kvm_irqchip_commit_route_changes(KVMRouteChange *c) +{ + if (c->changes) { + kvm_irqchip_commit_routes(c->s); + c->changes = 0; + } +} + void kvm_irqchip_release_virq(KVMState *s, int virq); int kvm_irqchip_add_adapter_route(KVMState *s, AdapterInfo *adapter); -- 2.34.1