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 5A52EC433F5 for ; Thu, 19 May 2022 12:15:14 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S237869AbiESMPL (ORCPT ); Thu, 19 May 2022 08:15:11 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:41116 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S237803AbiESMOv (ORCPT ); Thu, 19 May 2022 08:14:51 -0400 Received: from us-smtp-delivery-124.mimecast.com (us-smtp-delivery-124.mimecast.com [170.10.133.124]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 3A169BA568 for ; Thu, 19 May 2022 05:14:49 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=redhat.com; s=mimecast20190719; t=1652962488; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: in-reply-to:in-reply-to:references:references; bh=aRBcedztDVErkTvap/GROtONAbxkQWp2teij5HtPU3s=; b=d2WNs2Y6Hpfhe6/IyjEmNTE6SQsK9wlnw4qDH0WaOYR+i4sOoksTjBv0Z6YySWKg2tdJPb 2e3xm7/C4LLobMsZnsnr3iIo60MXisxQa0BaAczmhAwq2pty6bTKiV34FU8GpeMOOzhi7G DPAZPbrldmXtVPDBzei8maW5vZtpzoc= Received: from mail-wr1-f72.google.com (mail-wr1-f72.google.com [209.85.221.72]) by relay.mimecast.com with ESMTP with STARTTLS (version=TLSv1.2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id us-mta-556-qkAW427eN_Cr5RF6lbapKQ-1; Thu, 19 May 2022 08:14:47 -0400 X-MC-Unique: qkAW427eN_Cr5RF6lbapKQ-1 Received: by mail-wr1-f72.google.com with SMTP id e6-20020adfef06000000b0020d08e465e2so1496611wro.3 for ; Thu, 19 May 2022 05:14:46 -0700 (PDT) X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:in-reply-to:references:date :message-id:mime-version; bh=aRBcedztDVErkTvap/GROtONAbxkQWp2teij5HtPU3s=; b=MMboKKZrzI3Mt9gQSRBaZa93CEiOQZg5waksPABdoBQdUnIFNdOzTeDi2BLME0Ruiy fkLyR9oXcZiRjCpLbpM4ITUZ/TVBxZ99TfvEF9QDU3aS+bg2tFCYUJW7FtkzviiQd0Qa j70iUyAX3njoeInp0wkMO5hdofawzdqfjRGLEpg9aXskFRsedyG5DuIxCFGnulUHM1en 1brejAWtQQi316WKy6D9F/zuXqO++TU1Gt91pSK4H0g15uVKQWgmRnsp/nloqfBcsahr w166htO1/KYGNJU9fl/cAjB1INgNUF7QiGAYLl5UD1j0vgZA5sB6K2qFR7bpqrabwP87 GebA== X-Gm-Message-State: AOAM533xFmEjbQ32N5ITq0x9Lj53FQ/V3X0q165OFfjGSrmh/oLuKiWS kewOr6jgfhYQS2ibpk7N9ITGJMEXAwRHXv2wqbTmNBeeh47RS5uNYHz+q4zuQ4iIb7v8uLq0zR/ pkYPYRlt2ZURj/Q7ofsWZHSDm X-Received: by 2002:a5d:644e:0:b0:20e:7267:9ef7 with SMTP id d14-20020a5d644e000000b0020e72679ef7mr753020wrw.520.1652962485994; Thu, 19 May 2022 05:14:45 -0700 (PDT) X-Google-Smtp-Source: ABdhPJzc+tWUUsH9tzuVJImbGkhJ0Ej3I7mAxCSsBZ31dKE1NnaH+Ud9Wbb8jH/BhjS13pLD1tIPoQ== X-Received: by 2002:a5d:644e:0:b0:20e:7267:9ef7 with SMTP id d14-20020a5d644e000000b0020e72679ef7mr753012wrw.520.1652962485831; Thu, 19 May 2022 05:14:45 -0700 (PDT) Received: from fedora (nat-2.ign.cz. [91.219.240.2]) by smtp.gmail.com with ESMTPSA id e17-20020a05600c255100b0039734037303sm483830wma.38.2022.05.19.05.14.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 19 May 2022 05:14:45 -0700 (PDT) From: Vitaly Kuznetsov To: Like Xu Cc: Peter Zijlstra , Sean Christopherson , Wanpeng Li , Joerg Roedel , linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Paolo Bonzini , Jim Mattson Subject: Re: [PATCH RESEND v12 00/17] KVM: x86/pmu: Add basic support to enable guest PEBS via DS In-Reply-To: <20220411101946.20262-1-likexu@tencent.com> References: <20220411101946.20262-1-likexu@tencent.com> Date: Thu, 19 May 2022 14:14:43 +0200 Message-ID: <87fsl5u3bg.fsf@redhat.com> MIME-Version: 1.0 Content-Type: text/plain Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Like Xu writes: ... Hi, the following commit > KVM: x86/pmu: Add IA32_PEBS_ENABLE MSR emulation for extended PEBS (currently in kvm/queue) breaks a number of selftests, e.g.: # ./tools/testing/selftests/kvm/x86_64/state_test ==== Test Assertion Failure ==== lib/x86_64/processor.c:1207: r == nmsrs pid=6702 tid=6702 errno=7 - Argument list too long 1 0x000000000040da11: vcpu_save_state at processor.c:1207 (discriminator 4) 2 0x00000000004024e5: main at state_test.c:209 (discriminator 6) 3 0x00007f9f48c2d55f: ?? ??:0 4 0x00007f9f48c2d60b: ?? ??:0 5 0x00000000004026d4: _start at ??:? Unexpected result from KVM_GET_MSRS, r: 29 (failed MSR was 0x3f1) I don't think any of these failing tests care about MSR_IA32_PEBS_ENABLE in particular, they're just trying to do KVM_GET_MSRS/KVM_SET_MSRS. -- Vitaly