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Tue, 2 Jun 2026 19:04:18 +0000 (GMT) Date: Wed, 3 Jun 2026 00:34:17 +0530 From: Amit Machhiwal To: Gautam Menghani Cc: maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, harshpb@linux.ibm.com, stable@vger.kernel.org, Sean Christopherson Subject: Re: [PATCH v4] powerpc/pseries/Kconfig: Enable CONFIG_VPA_PMU to be used with KVM Message-ID: <20260603003257.06850e8c-5e-amachhiw@linux.ibm.com> Mail-Followup-To: Gautam Menghani , maddy@linux.ibm.com, mpe@ellerman.id.au, npiggin@gmail.com, chleroy@kernel.org, linuxppc-dev@lists.ozlabs.org, linux-kernel@vger.kernel.org, harshpb@linux.ibm.com, stable@vger.kernel.org, Sean Christopherson References: <20260602121706.8423-1-gautam@linux.ibm.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20260602121706.8423-1-gautam@linux.ibm.com> X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Authority-Analysis: v=2.4 cv=Zt3d7d7G c=1 sm=1 tr=0 ts=6a1f293a cx=c_pps a=AfN7/Ok6k8XGzOShvHwTGQ==:117 a=AfN7/Ok6k8XGzOShvHwTGQ==:17 a=kj9zAlcOel0A:10 a=FelO9ux0wxsA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=V8glGbnc2Ofi9Qvn3v5h:22 a=VwQbUJbxAAAA:8 a=1XWaLZrsAAAA:8 a=VnNF1IyMAAAA:8 a=CVMXPQV5iiZ5r4vfs10A:9 a=CjuIK1q_8ugA:10 X-Proofpoint-GUID: 6dIDJXalcTdr_FSQwICWwysB02J-crqN X-Proofpoint-ORIG-GUID: uW4kRzFzjZB2-9ILBAon9Lja98LLw1Fx X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNjAyMDE4MCBTYWx0ZWRfX+KD8xsQwi8Ys E8flbnLg/ZiOxfq7slI22AmegARrXKacnPdXxxwTyJdVq5zEHNZ5bIwYco7DUvflBJfuF4clH+u QYRE7dpfALe9dxUNolQ4hX+9sBpahpOpdnQ8zrpJD2AZ445QxtSOdCq8huiPWzgxAdH8qJZr0mo 42LgncVw0brCintm65ONuxoDUqLGENhVoLkXtlnAASVDwQteyetGZr10MnQm+a0nQCzxDiEmze8 zOJeAUCBAfMop7QqJW6R47wdP3t79I0wKxGodPEIsW8FFgG/w8d0bELYKboUvY8zrrMqV+D59v2 RYRClk3yRObb9kt5Zexqv/ErpMsrlVTzftiJSdEBlXH1+ukR+uTfhR/HWO0gj2i5XxhHO1XvUQ6 zs/xJB+TXVx9c8ItY5RDzP6wV5uV10JidwrPCKnMn3MpgnBF8/zv0RLt7poMT3KJ+0+TapcYCkK uJotuxkRpuXeAkU7XRQ== 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_03,2026-05-28_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 impostorscore=0 suspectscore=0 priorityscore=1501 bulkscore=0 clxscore=1011 phishscore=0 spamscore=0 malwarescore=0 adultscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605210000 definitions=main-2606020180 On 2026/06/02 05:47 PM, Gautam Menghani wrote: > 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 counters") > Cc: stable@vger.kernel.org # v6.13+ > Suggested-by: Sean Christopherson > Signed-off-by: Gautam Menghani > --- > 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 LGTM. Reviewed-by: Amit Machhiwal Thanks, Amit