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 E1C9CC678DC for ; Thu, 17 Aug 2023 23:05:47 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1355975AbjHQXFR (ORCPT ); Thu, 17 Aug 2023 19:05:17 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34502 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1356012AbjHQXEy (ORCPT ); Thu, 17 Aug 2023 19:04:54 -0400 Received: from mail-yw1-x1149.google.com (mail-yw1-x1149.google.com [IPv6:2607:f8b0:4864:20::1149]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 4924C272B for ; Thu, 17 Aug 2023 16:04:53 -0700 (PDT) Received: by mail-yw1-x1149.google.com with SMTP id 00721157ae682-589c6dc8670so4155527b3.0 for ; Thu, 17 Aug 2023 16:04:53 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=google.com; s=20221208; t=1692313492; x=1692918292; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:from:to:cc:subject:date:message-id:reply-to; bh=hS1zBff4CJqQpKtGoFuM9RpGEari+VKEFDh4dUpgboM=; b=s4J6qYsVz0J2xQZkaXuMZImQpXQ7CPB0achUXpAbHqN4dGRHvpb7ZZYuPyvXsjtWY9 dx7ilbFHek6yGLM51YrtLWpfHagVFx1UAF6fKj8FSyJmXFZHsBK/qNBN3UjDmIRg9Hqa zPLrgroMVWQoq+is4OF7N0ZtEB+Gf9afhpMGEq0V4wNVq1LSijkVK3Ic9D70tD6KuNPC SDM5hjWkYjwX8deQ6Z+IiF8MBPp3qKyAyynaXuYNZsatSoDmmrC1G1OYjGjIOr3yMGn8 49H5ReDHqoJhANUeqSJURQDiZaRKc0Px+1gkQpifPJEm4vd6Zzbj+79a5phZoSttuNXN Gyug== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20221208; t=1692313492; x=1692918292; h=cc:to:from:subject:message-id:references:mime-version:in-reply-to :date:x-gm-message-state:from:to:cc:subject:date:message-id:reply-to; bh=hS1zBff4CJqQpKtGoFuM9RpGEari+VKEFDh4dUpgboM=; b=fklDY68amMZm4Wf2X7dHWOOxX167SLkjvJFTyj+4gyL0AQci4kB1Z5/LiqwFsfA9rg DmFhr7hrBh3zQoTq9FDdQv+FQdRzK6tOj0cTrTS9pp2ac4tUEV+W6eTJD/vAJXRNTIVz YJKje2x5FxskerGE0HXQEY4kB9wtAEWafW371BGyeqg+LVxXloZnL3h7EG0qq8d1N6ZS aw8bwcZ/CzVFXKB0WnvDsMn3G6UNJd0mkurTNHNFZn88L2nH2gejL8QpS8cZGNMs8ZCe yZqYJeYjNvJ6OvpA2YgUib8ck2WKmusl9/cI1JTYp9Kz8tHkvo4mqq+mxaGOncSw/ajI QM8g== X-Gm-Message-State: AOJu0YzSpQHobWezGb/cUBXaLc4mcU9t2VOzlr+yLvsjnMbA2+bVPHGI c6R0LYCG0feRIMph1q3P+TFo8S3YGLg= X-Google-Smtp-Source: AGHT+IFVjzPu9bwWZynt8tGrMum+4+Vgkq5DJnwOx8y+2Me6QX9EXbE7NI7V7scAdmY748LFNaNxA+9V2e8= X-Received: from zagreus.c.googlers.com ([fda3:e722:ac3:cc00:7f:e700:c0a8:5c37]) (user=seanjc job=sendgmr) by 2002:a25:ad01:0:b0:d74:347:1da with SMTP id y1-20020a25ad01000000b00d74034701damr11495ybi.2.1692313492569; Thu, 17 Aug 2023 16:04:52 -0700 (PDT) Date: Thu, 17 Aug 2023 16:04:50 -0700 In-Reply-To: <20230814115108.45741-7-cloudliang@tencent.com> Mime-Version: 1.0 References: <20230814115108.45741-1-cloudliang@tencent.com> <20230814115108.45741-7-cloudliang@tencent.com> Message-ID: Subject: Re: [PATCH v3 06/11] KVM: selftests: Test consistency of CPUID with num of fixed counters From: Sean Christopherson To: Jinrong Liang Cc: Paolo Bonzini , Like Xu , David Matlack , Aaron Lewis , Vitaly Kuznetsov , Wanpeng Li , Jinrong Liang , kvm@vger.kernel.org, linux-kernel@vger.kernel.org Content-Type: text/plain; charset="us-ascii" Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Mon, Aug 14, 2023, Jinrong Liang wrote: > @@ -239,6 +272,14 @@ static void intel_test_counters_num(void) > if (!perf_caps[i]) > test_oob_gp_counter(0, 2, perf_caps[i], 0); > } > + > + for (ecx = 0; > + ecx <= kvm_cpu_property(X86_PROPERTY_PMU_FIXED_COUNTERS_BITMASK) + 1; This is the perfect time to use a local variable: for (ecx = 0; ecx <= fixed_counters_bitmask; ecx++) > + ecx++) { > + intel_test_oob_fixed_ctr(0, ecx, GP_VECTOR); > + intel_test_oob_fixed_ctr(nr_fixed_counters, ecx, GP_VECTOR); > + intel_test_oob_fixed_ctr(nr_fixed_counters + 1, ecx, GP_VECTOR); > + } > } > > int main(int argc, char *argv[]) > -- > 2.39.3 >