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 9866DECAAD1 for ; Thu, 1 Sep 2022 13:53:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S233967AbiIANxf (ORCPT ); Thu, 1 Sep 2022 09:53:35 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:46016 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233431AbiIANxe (ORCPT ); Thu, 1 Sep 2022 09:53:34 -0400 Received: from mail-pj1-x1033.google.com (mail-pj1-x1033.google.com [IPv6:2607:f8b0:4864:20::1033]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id EB4832B1 for ; Thu, 1 Sep 2022 06:53:32 -0700 (PDT) Received: by mail-pj1-x1033.google.com with SMTP id p8-20020a17090ad30800b001fdfc8c7567so5567468pju.1 for ; Thu, 01 Sep 2022 06:53:32 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:from:to:cc:subject:date; bh=ErJ0HYTeWtEwPWkKjxUMjvfOzkq3x7pnzQs4DfaztQI=; b=gVBhlXo+kWUOUAdPW/8QSC/spoR7aDlJ+7CKxJMA9X4LfDMCbY0jOUYmO6zAh3erUc oDX28M1zm7XifH6YMEdep0LvM0DAR1RzZHK1dKgbF41FQwrbtMpSsXNHw8GmdWQmPLoR feQD2gsEzTxU2EY8Nh9t0hdI4ycnocSPLPo1OcTMrlIpjH6dPDOFTlzq+GCed9ZkdD7O 2QH4VVZY1+/PuOV8c/EZxWWqQTLedlbdpCU4hEVh2OKSofLAKmn/mCoi53a+yjT8c/Kj z+FG2shz1RwkAqnaACpuZdnx6ThYZcxNI1PMQxDakoPYcFYBvOhi+ZLBfGSZ+ygoClXr 2mHg== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=in-reply-to:content-disposition:mime-version:references:message-id :subject:cc:to:from:date:x-gm-message-state:from:to:cc:subject:date; bh=ErJ0HYTeWtEwPWkKjxUMjvfOzkq3x7pnzQs4DfaztQI=; b=ea9Ss2Y1VKIWmVC/6Z3G+hkal6kkJhJ1Qn319hjOl3WcbvvPfuBZ3ShwUKW2AMssvU ttNgoe/Anygfp9HCpxkiaivQe3Rq7wv6z4thN5rO4T1rKcYNg7vUfh/DKCNJHqNnvPHZ Ba3skDLMXGClPojsvDjC0hwpcvTHQbq+yKIRJ1wl8QSLxB1K3nTrKpTMFjT7+25Ym3U/ yuItCMhmdOp9r0D1rhb6vERWEy90su8a9Ky9vZ16+1DaLQ61hCPTGY/owFkigEo0rUBz y3j/soI1yMADPw402KGMb6upS8u9E3sU/4Ko1oHixO8mCfp1ZntNHXdSEMUPDY7CNY0p 7XbQ== X-Gm-Message-State: ACgBeo3Llxi6gQJUpXcwZUnaZ6ayradK6lhEZGpqzEOnSNTSmj7Ch4oj tjnZ3LlZ4n0gVZz3nHUBJrXnBw== X-Google-Smtp-Source: AA6agR4Z7Z7RmmgguQab7+M3a9D+IP8AxhQm8Xs9dhC8dxIBwXv55n3Xcy8OAa6q4QCV1g5i38p46g== X-Received: by 2002:a17:902:7845:b0:16e:d647:a66c with SMTP id e5-20020a170902784500b0016ed647a66cmr29779570pln.64.1662040412275; Thu, 01 Sep 2022 06:53:32 -0700 (PDT) Received: from google.com (7.104.168.34.bc.googleusercontent.com. [34.168.104.7]) by smtp.gmail.com with ESMTPSA id k88-20020a17090a3ee100b001fd86f8dc03sm3359852pjc.8.2022.09.01.06.53.31 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 01 Sep 2022 06:53:31 -0700 (PDT) Date: Thu, 1 Sep 2022 13:53:28 +0000 From: Sean Christopherson To: Maxim Levitsky Cc: Paolo Bonzini , kvm@vger.kernel.org, linux-kernel@vger.kernel.org, Suravee Suthikulpanit , Li RongQing Subject: Re: [PATCH 03/19] Revert "KVM: SVM: Introduce hybrid-AVIC mode" Message-ID: References: <20220831003506.4117148-1-seanjc@google.com> <20220831003506.4117148-4-seanjc@google.com> <17e776dccf01e03bce1356beb8db0741e2a13d9a.camel@redhat.com> <84c2e836d6ba4eae9fa20329bcbc1d19f8134b0f.camel@redhat.com> <59206c01da236c836c58ff96c5b4123d18a28b2b.camel@redhat.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Thu, Sep 01, 2022, Maxim Levitsky wrote: > There was actually a patch series that was fixing it, but you said, just like me, > that it is not worth it, better to have an errata in KVM, since guest should not use > this info anyway. I didn't object to it, and neither I do now, but as you see, > you also sometimes agree that going 100% to the spec is not worth it. > > > I hope you understand me. Yep. And rereading what I wrote... I didn't intend to imply that you personally aren't operating in "good faith" or whatever is the right terminology. What I was trying to explain is why I sometimes speak in absolutes. When there is a bug/regression and KVM is clearly violating spec, it's not a matter of opinion; KVM is broken and needs to be fixed. Of course, one could argue that that's an opinion in and of itself...