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Mon, 15 Jun 2026 09:11:26 +0000 (GMT) Received: from localhost.localdomain (unknown [9.43.107.79]) by smtpav05.fra02v.mail.ibm.com (Postfix) with ESMTP; Mon, 15 Jun 2026 09:11:26 +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, stable@vger.kernel.org, Sean Christopherson , Amit Machhiwal , Harsh Prateek Bora Subject: [PATCH v5] powerpc/pseries/Kconfig: Enable CONFIG_VPA_PMU to be used with KVM Date: Mon, 15 Jun 2026 14:41:19 +0530 Message-ID: <20260615091120.84169-1-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: 8bit X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-Spam-Info: AW1haW4tMjYwNjE1MDA5MiBTYWx0ZWRfX19ooKVJ/AtVg Ktl0yVlPGUyt+Ge4WXjUpKHWK+lI3W7LGp+zIxSVljuI1wSdl/EszNK5AZphqRCaJkQRmV3SaOk IVpbLuEwMkBNOwWNfSKjWxtZ7EF2n6w= X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjE1MDA5MiBTYWx0ZWRfX7Bix1y2AKqk5 Dj8l5Qd5+mMgG/MlYN9Ve/ehixv4x9+UMKTzYGNZlEG3ntBB//uYvMAebo8gASk93G4lIXiZIkn MkQZfGQIP43wy6129wH+1uKSCxBBwcvqWmMd8rRQG11iRQ5y59FS19goC46f31dOAII/csVC6uv jIxvaES5YfuLzaIhRECqbjI+qF+FXzhnu/Fn47rel1Gz5w9/Z6pIqYLuytt9WRZdr3SmNS3ESgb B5iCN9uRM7YoKOJ4tsacumz1NUiURko80YCnrzr2+TkiwdN82RYYjV02AuzlOQJgTV9c3IJEq8X 2Era+6wT8aKh770mObdwm7EP5Q0T38Galhzg5tzHQw73DIkdtfRUTNlfHTLNhasBp0Hl8TouQ+9 GyMfL22rZd6oQg9X2S6Bdcp9DcUVLcmBn0fj0DYF1YsGc6P9tCGVpfPlNfK7xasPNGYsOdvjMNM gz4cWVkOh00qxhz9GQQ== X-Proofpoint-GUID: d6gVcZ4PGAZyCSM5L84TTlwHjLUHdXAd X-Authority-Analysis: v=2.4 cv=NuDhtcdJ c=1 sm=1 tr=0 ts=6a2fc1c5 cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VwQbUJbxAAAA:8 a=1XWaLZrsAAAA:8 a=VnNF1IyMAAAA:8 a=bjUGR1ZD7gT2lh1wywYA:9 X-Proofpoint-ORIG-GUID: jMRxZKmIQycq0eusY8QxQoM_wTcVHFW3 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=2026-06-15_02,2026-06-12_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 spamscore=0 adultscore=0 suspectscore=0 impostorscore=0 clxscore=1015 phishscore=0 bulkscore=0 malwarescore=0 priorityscore=1501 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2606040000 definitions=main-2606150092 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. Cc: stable@vger.kernel.org # v6.13+ Suggested-by: Sean Christopherson Reviewed-by: Amit Machhiwal Reviewed-by: Harsh Prateek Bora Signed-off-by: Gautam Menghani --- v4 -> v5: 1. Drop the fixes tag (Ritesh) 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/platforms/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. -- 2.54.0