From nobody Mon Jun 8 04:15:15 2026 Received: from mx0b-001b2d01.pphosted.com (mx0b-001b2d01.pphosted.com [148.163.158.5]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 10A383DDDCE; Tue, 2 Jun 2026 12:17:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=148.163.158.5 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780402661; cv=none; b=XDuCM7YVkth3meCilUCOzAWYOsbEl82RNKI1LhYHTmeT6mUV4UOfusDwdT8RJQ25OnujErPWJxprS2telSGT4jBdLfNPSTqVHgxTt2CboZCLxOhYw10zQ4PHphw6TnegCjVTxqqO+oIwPufNgRW63g6A2HG0r5uxfJKAAtSGzdM= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780402661; c=relaxed/simple; bh=Rc0n/4B8uVDfQQlpuMRda7zheY3mHHjkq98GKpiJjt4=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=YbHhEgQKYrcObAZfiLR22RavSMbwx30dqNQV8z96hLRFafkRC6659qeVF9OpQ0xwtVnDfSXAKvBBeS9+i4Yr1r4Yci5MJYlO1EiDFMXukc48vEbtVN0VYFqeWsesP2OgXLPvzWiSD4YMNLoT4uPbwBPDNlXwoYqZcT0CyQ2zDxU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com; spf=pass smtp.mailfrom=linux.ibm.com; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b=Klhn/5DK; arc=none smtp.client-ip=148.163.158.5 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.ibm.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=ibm.com header.i=@ibm.com header.b="Klhn/5DK" Received: from pps.filterd (m0356516.ppops.net [127.0.0.1]) by mx0a-001b2d01.pphosted.com (8.18.1.11/8.18.1.11) with ESMTP id 6526Bijq3294139; Tue, 2 Jun 2026 12:17:19 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=ibm.com; h=cc :content-transfer-encoding:date:from:message-id:mime-version :subject:to; s=pp1; bh=S4LhiaiseoLditI98UzQIfvNCyICnetVjBlGJkixe yU=; b=Klhn/5DK+1DxBrF9vHBK+olY97gio7VwfgogTpncmig5xcoJbSxtVJPjX c4CEn+c/+mY98yD0rI+/SUDxoOqmcfNCvoCqmawpvs8pT9jjClRs6LoUN08G9p8d mTrvc1uhpYsHTik0LgTGBunhed9jnIY1rXbzCoIYvH0IHMOqSJQ/bwxaaWKRgQ34 RIrjsP5ePnqbjfA35rHAdHA0saQNXHkMtjHdOyeKP3gQ8RJnwnP5m14OKTT38u5S zEeomXP0mFBsEsq2m7SroZ/QFc7tnT3JDUqux5dIpmnasgV1mlZtFbekgRKCo9V+ oizgQW92mtU+yQnkffUKRpkYKOd6g== Received: from ppma13.dal12v.mail.ibm.com (dd.9e.1632.ip4.static.sl-reverse.com [50.22.158.221]) by mx0a-001b2d01.pphosted.com (PPS) with ESMTPS id 4efnahnjuk-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 02 Jun 2026 12:17:18 +0000 (GMT) Received: from pps.filterd (ppma13.dal12v.mail.ibm.com [127.0.0.1]) by ppma13.dal12v.mail.ibm.com (8.18.1.7/8.18.1.7) with ESMTP id 652C99lH015688; Tue, 2 Jun 2026 12:17:17 GMT Received: from smtprelay03.fra02v.mail.ibm.com ([9.218.2.224]) by ppma13.dal12v.mail.ibm.com (PPS) with ESMTPS id 4egcegjwv2-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 02 Jun 2026 12:17:17 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (smtpav03.fra02v.mail.ibm.com [10.20.54.102]) by smtprelay03.fra02v.mail.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id 652CHE5c31588730 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Tue, 2 Jun 2026 12:17:14 GMT Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 1F97F20043; Tue, 2 Jun 2026 12:17:14 +0000 (GMT) Received: from smtpav03.fra02v.mail.ibm.com (unknown [127.0.0.1]) by IMSVA (Postfix) with ESMTP id 222832004B; Tue, 2 Jun 2026 12:17:12 +0000 (GMT) Received: from mac.bl1-in.ibm.com (unknown [9.123.11.154]) by smtpav03.fra02v.mail.ibm.com (Postfix) with ESMTP; Tue, 2 Jun 2026 12:17:11 +0000 (GMT) From: Gautam Menghani To: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org Cc: Gautam Menghani , linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, harshpb@linux.ibm.com, stable@vger.kernel.org, Sean Christopherson Subject: [PATCH v4] powerpc/pseries/Kconfig: Enable CONFIG_VPA_PMU to be used with KVM Date: Tue, 2 Jun 2026 17:47:05 +0530 Message-ID: <20260602121706.8423-1-gautam@linux.ibm.com> X-Mailer: git-send-email 2.50.1 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjAyMDExNiBTYWx0ZWRfX4fAjMt5ZWUGK +g/5MBYjv8J5mDxNulUhZtixi9m/KODxWl8NzXe/pMHQXRyxFnmH4NfuXDmhYgLPVPOIoti4dxr 3C/mzt0XSl1RGVZrV0vldFLag7llOhngbURMOwxgWC2HQZ8toYD7nAyWXOIdhkpUFbqV58HdjNK Hb8JOtgMX4wbz6208rLxhupH5mWL5hQtKDyWAn5R95Kjn42cX5dQbLe9lS82CUG4HZ8FDVLtghv /UG65l7eS9YfBH2IXQNOkKO6blzsYI0ayjHRrtJ9bgXtRk4TvMnsQtVmCpfViFX5sGgHWWuiXtm SziQ5+XbrRLw37/QxCt5FdZQygWm2tQGctZR/pjqXDbSrgG3A0k8u+rKHc4Tvkh+MWhlYu8DB0U Z1/XQoDcVVjG9mTHv6h2GU459aQZGNofcwbVdX7i8w00T3LdVfGf9OSuKxpHQ2mkGLTPdAPy3yI B4NexoF6z2dAR6w35OQ== X-Proofpoint-ORIG-GUID: jO8XjvYul8zzxp-2LfLi0xarIwr0ep75 X-Authority-Analysis: v=2.4 cv=cOzQdFeN c=1 sm=1 tr=0 ts=6a1ec9cf cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=VwQbUJbxAAAA:8 a=1XWaLZrsAAAA:8 a=VnNF1IyMAAAA:8 a=dkYHUGA-BDwxkZPz_lEA:9 X-Proofpoint-GUID: DKglUHwq6bgocDs4W-vNGNkRjis1Mobb X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1143,Hydra:6.1.125,FMLib:17.12.100.49 definitions=2026-06-02_01,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 impostorscore=0 lowpriorityscore=0 spamscore=0 bulkscore=0 malwarescore=0 phishscore=0 suspectscore=0 priorityscore=1501 adultscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606020116 Content-Type: text/plain; charset="utf-8" Currently, CONFIG_VPA_PMU is not enabled by default, and consequently cannot be used for KVM guests at all, unless explicitly enabled on host kernel. Mark CONFIG_VPA_PMU as "default m" to ensure it is available when KVM is being used. Fixes: 176cda0619b6c ("powerpc/perf: Add perf interface to expose vpa count= ers") Cc: stable@vger.kernel.org # v6.13+ Suggested-by: Sean Christopherson Signed-off-by: Gautam Menghani Reviewed-by: Amit Machhiwal Reviewed-by: Harsh Prateek Bora --- v3 -> v4: 1. Reword the patch description (Harsh) v2 -> v3: 1. Make CONFIG_VPA_PMU as default m so that it can separately disabled (Sean) v1 -> v2: 1. Rebased on latest master arch/powerpc/platforms/pseries/Kconfig | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/powerpc/platforms/pseries/Kconfig b/arch/powerpc/platform= s/pseries/Kconfig index f7052b131a4c..74910ce3a541 100644 --- a/arch/powerpc/platforms/pseries/Kconfig +++ b/arch/powerpc/platforms/pseries/Kconfig @@ -154,6 +154,7 @@ config HV_PERF_CTRS config VPA_PMU tristate "VPA PMU events" depends on KVM_BOOK3S_64_HV && HV_PERF_CTRS + default m help Enable access to the VPA PMU counters via perf. This enables code that support measurement for KVM on PowerVM(KoP) feature. --=20 2.53.0