Received: by 2002:a05:6358:bb9e:b0:b9:5105:a5b4 with SMTP id df30csp5911399rwb; Wed, 7 Sep 2022 09:41:59 -0700 (PDT) X-Google-Smtp-Source: AA6agR5K8vvOnkR7JqQXyxavoDJ5ubSkPudPTT1o4thl5DpvcnutlrxiyLj76tMIam38k2+e2TE1 X-Received: by 2002:a05:6402:a43:b0:44e:cf0a:5e82 with SMTP id bt3-20020a0564020a4300b0044ecf0a5e82mr3711312edb.118.1662568918921; Wed, 07 Sep 2022 09:41:58 -0700 (PDT) ARC-Seal: i=1; a=rsa-sha256; t=1662568918; cv=none; d=google.com; s=arc-20160816; b=Fv/31po//9qepgEOCJNl2ixSb+BiJlT0i/KFiIC2yd2LLNuWKcrwNdjcc9dP9QhQ6e hlQKozsb5fDXhRXrw1QUpW9XVslt3tkDDq/104klP6dDX3q2Olf+SO1pcRmG4O5w+OZB jNjY+8zyN6p2hGrASFEKl0eMdsuGixP1LHyWdqQ9CpFIoqOXPP82nq+OWFzQoOFrxkAe xPaF4nOTP/STqaLsknMlUrwhNYk0PGpcvNT1ogEn4PtkNBtXNrX+vRbeJ4koeP8+Z1o6 M2Ch44WPn0+t+uohQGtc5YpxtoutlDtSIqKLiw80Aj14ek5/XnmfplmTFDuvbC3uLLqm z1mw== ARC-Message-Signature: i=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=arc-20160816; h=list-id:precedence:cc:to:subject:message-id:date:from:in-reply-to :references:mime-version:dkim-signature; bh=WjwdWxOWRjfQGqAqpcnj4pX2zdc5HoKExq2c695W4a8=; b=tTcBmB8vL+QQnfSziAiHRVqa+CVbCy7omKiIBZkZrfMxwpMnSX85RAOHYllWA1XSVf xOEnf4nVUgVs9YDK1NWg2VIZlxnW4kmTcXcMXDtNrpP02Gyt640GXivYnyCycW328ze7 RLY/+pduZ4/+hS3/83HQ+dw9rk2x6y9jRrQH849cA0Gk5efE8CY9w/Hm5PFDSMplOxoe ZIQiIE0xjByxjdgE31QAu8jMEQM4NezxToPtjwuKBMhTuxwsAckSsE2t6enQM1WgXb3C U8ZynTptF+BsSC2FZRYOoOaDPtCru8Pao0lSy/9o0I/F8Vp4Y6p6TlosjUMH320rsvms NxIg== ARC-Authentication-Results: i=1; mx.google.com; dkim=pass header.i=@google.com header.s=20210112 header.b=Wfub1DCP; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Return-Path: Received: from out1.vger.email (out1.vger.email. [2620:137:e000::1:20]) by mx.google.com with ESMTP id hv11-20020a17090760cb00b0073d8bc42e04si14270770ejc.114.2022.09.07.09.41.33; Wed, 07 Sep 2022 09:41:58 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; dkim=pass header.i=@google.com header.s=20210112 header.b=Wfub1DCP; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=pass (p=REJECT sp=REJECT dis=NONE) header.from=google.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S229912AbiIGQ3s (ORCPT + 99 others); Wed, 7 Sep 2022 12:29:48 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:51852 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229962AbiIGQ3o (ORCPT ); Wed, 7 Sep 2022 12:29:44 -0400 Received: from mail-ot1-x335.google.com (mail-ot1-x335.google.com [IPv6:2607:f8b0:4864:20::335]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 761B010D3 for ; Wed, 7 Sep 2022 09:29:41 -0700 (PDT) Received: by mail-ot1-x335.google.com with SMTP id z22-20020a056830129600b0063711f456ceso10622948otp.7 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=nXf6ZatO5sE12rmCTjQ0ZufdV31ytnelKmH6c48V+L2VqyqHdpwrm+xHYBgAcr2lHe DUTWtQJ1/8GkJmZEIj1/Tjwt7tWBonCdsBPRYjQvJQrgaZW1y4roOLNV7/DYGUAW0D74 Rr3EwrLYeiWlYjaX/HJLnEx7WL0VUzarghB096cZm2IzQ3bWn2zAOBqW8u2wTsKI9uyP oS+RuJ7U4NZPKBxIXd5UzfpxwLv6Mv8arebMqxv8PVmDDeF5n0RLa5XDcU0XqbN4Dp+Y iLrBMTs953FbujELt3jgQI51c2965zrsmQhlYCX4Wqa1083PaJA4KdA2pI6CJ7C/JZOc zrDg== X-Gm-Message-State: ACgBeo0kEpaKTNwo6zf7fCDnkaPSNz+eYjkM9ZBMV0ge/xn5NM4CKn3s BeNd+xcntvVspO/grmzhFD9xKe+ilcHqvZXjZqb4Dw== 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" X-Spam-Status: No, score=-17.6 required=5.0 tests=BAYES_00,DKIMWL_WL_MED, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF, ENV_AND_HDR_SPF_MATCH,RCVD_IN_DNSWL_NONE,SPF_HELO_NONE,SPF_PASS, T_SCC_BODY_TEXT_LINE,USER_IN_DEF_DKIM_WL,USER_IN_DEF_SPF_WL autolearn=unavailable autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@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