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Wed, 27 May 2026 16:16:40 +0000 (GMT) Received: from Gautams-MacBook-Pro.local (unknown [9.43.117.77]) by smtpav01.fra02v.mail.ibm.com (Postfix) with ESMTPS; Wed, 27 May 2026 16:16:39 +0000 (GMT) Date: Wed, 27 May 2026 21:46:33 +0530 From: Gautam Menghani To: Sean Christopherson Cc: maddy@linux.ibm.com, npiggin@gmail.com, mpe@ellerman.id.au, chleroy@kernel.org, atrajeev@linux.ibm.com, linuxppc-dev@lists.ozlabs.org, kvm@vger.kernel.org, linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: Re: [PATCH v2] KVM: PPC: Kconfig: Enable CONFIG_VPA_PMU with KVM Message-ID: References: <20260518044150.34632-1-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: X-TM-AS-GCONF: 00 X-Proofpoint-Reinject: loops=2 maxloops=12 X-Proofpoint-GUID: Xu6BugMKoIkhkjlN9TsXGZnUcHw_o0Aa X-Proofpoint-ORIG-GUID: b4h-zIYe_oohMh7MgSS0yqDDW51hSHfT X-Authority-Analysis: v=2.4 cv=QIJYgALL c=1 sm=1 tr=0 ts=6a1718ee cx=c_pps a=bLidbwmWQ0KltjZqbj+ezA==:117 a=bLidbwmWQ0KltjZqbj+ezA==:17 a=kj9zAlcOel0A:10 a=NGcC8JguVDcA:10 a=VkNPw1HP01LnGYTKEx00:22 a=RnoormkPH1_aCDwRdu11:22 a=Y2IxJ9c9Rs8Kov3niI8_:22 a=kH-xMUQrV69S-q4FAwAA:9 a=CjuIK1q_8ugA:10 X-Proofpoint-Spam-Details-Enc: AW1haW4tMjYwNTI3MDE2MiBTYWx0ZWRfX2QhgFulZW/6g Hy7Sug3x7czsigDCKgOh/cCVjtkTjghZP+Dz/ef744228AR1+LwgPyGw7dsgss2fBD1Cz6AqKgO A/Qr25KvlfSitOv9ndVQacMFGfWA1PvBqNCad0OdoVIH9VWr/oklw1B2uHcIshV5B3iXJG6IyET TtR/Y55rm5e8ypHl0w8i+rG7TfF4TX85HEcXVQ6Ny4ZbtAMt9QHzs3eKNbP4M1XjGf9UUbwxX56 6bg7UyZymYshjdD4/UMye7nw6k/kplm5t6jZAC0ZstDFYkfSzWhDFkbvVeo5uS988VdjTz6wU7a OdPHAoNvhY7kZZ9eJ9GTCiK/9+cA2tend9bHw3itshzDh9zPsMzycuKi7nlTfdq2jnsPUPioof2 UqUgEkoM+sk1yzN6JSn11CHdCn4lx6ZScHfjfxHwggMX2olJIEV6KStSYurHyDP0q6MGsfeWKlJ EDpY9n0DTI+AIVsGxyA== 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=2026-05-27_02,2026-05-26_03,2025-10-01_01 X-Proofpoint-Spam-Details: rule=outbound_notspam policy=outbound score=0 clxscore=1015 priorityscore=1501 impostorscore=0 malwarescore=0 suspectscore=0 phishscore=0 bulkscore=0 adultscore=0 spamscore=0 lowpriorityscore=0 classifier=typeunknown authscore=0 authtc= authcc= route=outbound adjust=0 reason=mlx scancount=1 engine=8.22.0-2605130000 definitions=main-2605270162 On Mon, May 18, 2026 at 06:01:04PM -0700, Sean Christopherson wrote: > On Mon, May 18, 2026, Gautam Menghani wrote: > > Enable CONFIG_VPA_PMU with KVM to enable its usage. Currently, the > > vpa-pmu driver cannot be used since it is not enabled in distro configs. > > That seems like a problem to take up with distros, no? Rather than enabling individually for different distros, wouldn't it be better if it is enabled with KVM automatically? I can rephrase the commit log to emphasize that this config option is only relevant for KVM (similar to CONFIG_KVM_BOOK3S_HV_PMU). Thanks, Gautam