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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 20223C433F5 for ; Fri, 10 Dec 2021 11:38:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S240733AbhLJLlg (ORCPT ); Fri, 10 Dec 2021 06:41:36 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:44664 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S240732AbhLJLld (ORCPT ); Fri, 10 Dec 2021 06:41:33 -0500 Received: from mail-ed1-x535.google.com (mail-ed1-x535.google.com [IPv6:2a00:1450:4864:20::535]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 615CCC0617A1; Fri, 10 Dec 2021 03:37:58 -0800 (PST) Received: by mail-ed1-x535.google.com with SMTP id t5so28658577edd.0; Fri, 10 Dec 2021 03:37:58 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20210112; h=sender:message-id:date:mime-version:user-agent:subject :content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=9PGzqzVr2lWR3c2FT6fcegvnLqjE5zdT1FTCSBDISuI=; b=OM3Nsd4ERses81PNwgGaV6Q7lHZ2NrIuizdbzBgNTGK9RHnDCOrAsDnSChO7XKFAZi vLUjMEQcVNFHcGMVfYKcGFH2HBh6Vw3rIMPk91Mzbko3xYPcjWXaD0QhzPgcRCzi/rmz TigzgBdHpHE1kgICxTUm3FPaWKeuU6uYvAJUZCVcvdbmCN0jXN6JZcfN1tyLFT310IQs 7O4yK8ofsPkeRg6dtwxD+XD/+2wNTzt9Q0pA3c5hwe74Zk+jsx176dHTG9EnmTmbYPbD tYe4dTjQoFl1jcBSNq1N8m6APJC9eoK8SuIahBSIyDP06/QAkhsmqLyGvpnFOkJO7Mnz G1qA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:sender:message-id:date:mime-version:user-agent :subject:content-language:to:cc:references:from:in-reply-to :content-transfer-encoding; bh=9PGzqzVr2lWR3c2FT6fcegvnLqjE5zdT1FTCSBDISuI=; b=1xwpjRNz4ZZi7ifvhev+HPpGx6TBYxmIMWAW/65diX0fgktnDhQZKSvhQE2lh+HVmZ wzHxhsMULbPWbozbxR5mAoYe/FIY4F2dMN94cHwHymg+uneBarqp5Rd2nCaycVuDa1fd Ot34zuU5EI1T/LKR8irL7GFURP4PEey4k0ewr3bWRZuhKVh/T6AXz8+sPso+aOf0Tcak LUSBF+IqB0lqoY7TlmN4gQnTujRj+AaKlKKrTyz2mxtHcSz9MokIN/GZJwTFUMBG8ARS KqdQCn9akKgpGszmr+x3M0BtrXoM2AwIbKgdzKfZWZREMZ2YPEWBZCwy2LeAhbtTLPGB rhKg== X-Gm-Message-State: AOAM531eiMeBSIoBg6Uulw+fI/zu0j7QKfQ2EGxspO5WIcoSQg/wvlT3 w7awceM7jOrAyMYyFHqbPjY= X-Google-Smtp-Source: ABdhPJx6v0WRp3OGfTassW/62i7NBEybv5+nw9b4oMWyDZPAfmhh2AuYeK9X3ZI4bHRxlhTob2it/g== X-Received: by 2002:a50:9ea6:: with SMTP id a35mr37180244edf.400.1639136276255; Fri, 10 Dec 2021 03:37:56 -0800 (PST) Received: from ?IPV6:2001:b07:6468:f312::973? ([2001:b07:6468:f312::973]) by smtp.googlemail.com with ESMTPSA id sa17sm1389929ejc.123.2021.12.10.03.37.54 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Fri, 10 Dec 2021 03:37:55 -0800 (PST) Sender: Paolo Bonzini Message-ID: Date: Fri, 10 Dec 2021 12:37:54 +0100 MIME-Version: 1.0 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:91.0) Gecko/20100101 Thunderbird/91.2.0 Subject: Re: [PATCH 4/6] KVM: SVM: fix races in the AVIC incomplete IPI delivery to vCPUs Content-Language: en-US To: Sean Christopherson , Maxim Levitsky Cc: kvm@vger.kernel.org, "open list:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Wanpeng Li , Dave Hansen , Joerg Roedel , "H. Peter Anvin" , Vitaly Kuznetsov , Borislav Petkov , "maintainer:X86 ARCHITECTURE (32-BIT AND 64-BIT)" , Ingo Molnar , Thomas Gleixner , Jim Mattson References: <20211209115440.394441-1-mlevitsk@redhat.com> <20211209115440.394441-5-mlevitsk@redhat.com> From: Paolo Bonzini In-Reply-To: Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On 12/9/21 16:38, Sean Christopherson wrote: > + if (svm_deliver_avic_intr(vcpu, -1) { > + vcpu->arch.apic->irr_pending = true; > + kvm_make_request(KVM_REQ_EVENT, vcpu); > + } This is a good idea, but the details depends on patch 3 so I'll send a series of my own. Paolo