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 EA9E8C433EF for ; Tue, 8 Mar 2022 11:43:40 +0000 (UTC) Received: from localhost ([::1]:48682 helo=lists1p.gnu.org) by lists.gnu.org with esmtp (Exim 4.90_1) (envelope-from ) id 1nRYFg-0004Lu-41 for qemu-devel@archiver.kernel.org; Tue, 08 Mar 2022 06:43:40 -0500 Received: from eggs.gnu.org ([209.51.188.92]:44554) by lists.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.90_1) (envelope-from ) id 1nRY7N-0007le-8V for qemu-devel@nongnu.org; Tue, 08 Mar 2022 06:35:05 -0500 Received: from [2a00:1450:4864:20::631] (port=34473 helo=mail-ej1-x631.google.com) by eggs.gnu.org with esmtps (TLS1.2:ECDHE_RSA_AES_128_GCM_SHA256:128) (Exim 4.90_1) (envelope-from ) id 1nRY7L-0005u6-LV for qemu-devel@nongnu.org; Tue, 08 Mar 2022 06:35:04 -0500 Received: by mail-ej1-x631.google.com with SMTP id gb39so38478065ejc.1 for ; Tue, 08 Mar 2022 03:35:03 -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=f3tF3F2oelBcRo7SwxGLE49lOLvZU4Fu6BpeRb+9CS0=; b=bCJlJyBz97MKNTu1KTRmP8gGru0B1rLu7xf+2SuSiXSlzuu9pIPWplQgZXXsp+8S9Y 0Slhn0AqKQz+ytYhuIkBfYsThFsNGlaLOrLzngQn/Xr6DJLhgToq9jig78BF7YqzdSVi 4dJVqNsxT6h87beP6NCZ/HimibJwTDADQV2abykX50ud1ifWlwNWBYhURoOwsHOrA6/i NMABNd4m6FGm0qj+BwwkItToI1Jzjq80yXAQw0seYRbgegV8m4TTpAIZ+fLw9OoMZ1W9 X0H5cc3YLrMaMKsKJLQUgLvp9DW7hhVJTJoDPp0dVvcwLcMzZanHLBpgXlIGbkVz9IpT fb7w== 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=f3tF3F2oelBcRo7SwxGLE49lOLvZU4Fu6BpeRb+9CS0=; b=QFUsfqgA12+eDlmUdfq6wuMBREynoem1yXS72RT9oFCLgoEDcrie18IJClLgp7IKko ltWS6Xvwa0etXf5rc6FhnsqVvLOP7p679Nj18CrU0Qsmm1SS+jvzaHWdz+S8/Vk4J59O DZKPcnKyl6rSs/aPnPP7rgAo+3ccCVMjbnZia5kQZJqRcwJfl8Vwle/1ECAD8OoCxce3 CTTydng+O8pJjFcS0WW0/LHdpwsrdafZB5hxXvAba53sH/dg9CHpZUkh66i/smv/DTOj MS9U3CD62tyFlKrkn3tFeiPFgwiIEWYimmj6rf9ig5CtGAGH/n6f9E+uygs/KVSIk3Lj bvSw== X-Gm-Message-State: AOAM530fOBBoRK8uGR+PH6Xi+xDAu4fRgXN+kkqC9xx67tAtX7nU+uBa O/Sxmu/IV+te+E9RAELwEkcs/r/oTTU= X-Google-Smtp-Source: ABdhPJzi26xJCjlMIwH+W8w+yN1M4FD1SP3kwO7EOGaOxc7uo0gTqO+sciGocrttq6+TguSXkoRVHA== X-Received: by 2002:a17:907:1c91:b0:6d7:b83:cddb with SMTP id nb17-20020a1709071c9100b006d70b83cddbmr12593436ejc.739.1646739302338; Tue, 08 Mar 2022 03:35:02 -0800 (PST) Received: from avogadro.lan ([2001:b07:6468:f312:c8dd:75d4:99ab:290a]) by smtp.gmail.com with ESMTPSA id l2-20020aa7cac2000000b003f9b3ac68d6sm7491868edt.15.2022.03.08.03.35.00 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 08 Mar 2022 03:35:01 -0800 (PST) From: Paolo Bonzini To: qemu-devel@nongnu.org Subject: [PULL 08/22] kvm-irqchip: introduce new API to support route change Date: Tue, 8 Mar 2022 12:34:31 +0100 Message-Id: <20220308113445.859669-9-pbonzini@redhat.com> X-Mailer: git-send-email 2.35.1 In-Reply-To: <20220308113445.859669-1-pbonzini@redhat.com> References: <20220308113445.859669-1-pbonzini@redhat.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Host-Lookup-Failed: Reverse DNS lookup failed for 2a00:1450:4864:20::631 (failed) Received-SPF: pass client-ip=2a00:1450:4864:20::631; envelope-from=paolo.bonzini@gmail.com; helo=mail-ej1-x631.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); -- 2.35.1