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 AA8A5C38145 for ; Wed, 7 Sep 2022 16:29:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229437AbiIGQ3r (ORCPT ); Wed, 7 Sep 2022 12:29:47 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:52082 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229965AbiIGQ3o (ORCPT ); Wed, 7 Sep 2022 12:29:44 -0400 Received: from mail-ot1-x32e.google.com (mail-ot1-x32e.google.com [IPv6:2607:f8b0:4864:20::32e]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 763226351 for ; Wed, 7 Sep 2022 09:29:41 -0700 (PDT) Received: by mail-ot1-x32e.google.com with SMTP id q39-20020a056830442700b0063889adc0ddso10642886otv.1 for ; Wed, 07 Sep 2022 09:29:41 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:from:to:cc:subject:date; bh=WjwdWxOWRjfQGqAqpcnj4pX2zdc5HoKExq2c695W4a8=; b=Wfub1DCPZNR7R9EN206ywv+e0F5aZjPNKrGchA3lDYiSZpytW4G5WbKw0oho4pVavI QdWIxFUGv6r4Gb44syKGmg9p0mRwjzAhmmw0YzWNYWUUfTzxBQPOXT/SEt19rFkPYbtL ScbR3CH/ohuxUF6Auh17ODk6cI4gZuyUfThlbuW6zPRRaH0FhrYXHwIdcAQJdciXOCpR p9gkidxuPfnLHTOzIx47aZziWoQ66xgalL7X6Y+6ruJgIJm6XzxKLf094JiyJzzKSnD6 Unu5k//45ofyctD+y9kE19LTqxeNJJanYlFoJi8oXXPGy9CNvWi0Bsj3EkhasTNrvgNQ 4yqQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=cc:to:subject:message-id:date:from:in-reply-to:references :mime-version:x-gm-message-state:from:to:cc:subject:date; bh=WjwdWxOWRjfQGqAqpcnj4pX2zdc5HoKExq2c695W4a8=; b=Jmkwu3f2AxBYzWk+6R514UNfth9iU6x61z/qbmyMghKBoBMdkV+hd2OQ46iL0HVSca sAViDVK8hwKGQGQXQ4F/0R8aiWps/fExIZaZvP1BUbILCsbW1HYo0VYup5DLjR7ieVdB oB6W+ezT3m1aPOg8rLH5IoFDf3LR3emnM2iv32o296/wav8XZRK6z42Ebh2kmoxEz7x7 WRemuZThndzWB8Ek2hOoSh/ynzYNtzVx+8KlbnVW+ZuClcEQYi3+Nldkq9p9ow5Otxz2 T9mt47s9uXiSWLtd08bsX7pTLbGIzJ4ldQEuT00tr6on98yYuignPV9ooxpICV53k5l4 5zBw== X-Gm-Message-State: ACgBeo3WMZzNsiWF65tMCu07BPwMRUMdssL97O8MCypvpjU7K2dAZKlC c0j71Sy5TpHIF7lyqYPjnYQFz2tHbu17gyDZjkNNbBJj6xw= X-Google-Smtp-Source: AA6agR4e7h9mwhkVcXUQ0zJTayfYABVbgQEn1AaGs5Y+5rpa31E7kDI3hDfchQP/hsws/JupffSf3HpzxTfCGAli3wE= X-Received: by 2002:a05:6830:14d4:b0:63f:3cce:ff5e with SMTP id t20-20020a05683014d400b0063f3cceff5emr1862874otq.367.1662568180813; Wed, 07 Sep 2022 09:29:40 -0700 (PDT) MIME-Version: 1.0 References: <20220907104838.8424-1-likexu@tencent.com> <20220907104838.8424-2-likexu@tencent.com> In-Reply-To: <20220907104838.8424-2-likexu@tencent.com> From: Jim Mattson Date: Wed, 7 Sep 2022 09:29:29 -0700 Message-ID: Subject: Re: [PATCH v2 2/3] KVM: x86/pmu: Limit the maximum number of supported Intel GP counters To: Like Xu Cc: Sean Christopherson , Paolo Bonzini , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="UTF-8" Precedence: bulk List-ID: X-Mailing-List: kvm@vger.kernel.org On Wed, Sep 7, 2022 at 3:49 AM Like Xu wrote: > > From: Like Xu > > The Intel Architectural IA32_PMCx MSRs addresses range allows for > a maximum of 8 GP counters. A local macro (named KVM_INTEL_PMC_MAX_GENERIC) > is introduced to take back control of this virtual capability to avoid > errors introduced by the out-of-bound counter emulations. > > Suggested-by: Jim Mattson > Signed-off-by: Like Xu Reviewed-by: Jim Mattson