linux-kernel - [PATCH] KVM: PPC: Kconfig: Enable CONFIG_VPA

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Message-ID: <20250417121727.267280-1-gautam@linux.ibm.com>
Date: Thu, 17 Apr 2025 17:47:23 +0530
From: Gautam Menghani <gautam@...ux.ibm.com>
To: maddy@...ux.ibm.com, npiggin@...il.com, mpe@...erman.id.au,
        christophe.leroy@...roup.eu, naveen@...nel.org
Cc: Gautam Menghani <gautam@...ux.ibm.com>, linuxppc-dev@...ts.ozlabs.org,
        kvm@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: [PATCH] KVM: PPC: Kconfig: Enable CONFIG_VPA_PMU with KVM

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.

On fedora kernel 6.13.7, the config option is disabled:
$ cat /boot/config-6.13.7-200.fc41.ppc64le | grep VPA
 # CONFIG_VPA_PMU is not set

Fixes: 176cda0619b6c ("powerpc/perf: Add perf interface to expose vpa counters")
Cc: stable@...r.kernel.org # v6.13+
Signed-off-by: Gautam Menghani <gautam@...ux.ibm.com>
---
 arch/powerpc/kvm/Kconfig | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index dbfdc126bf14..209627e57d07 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -84,6 +84,7 @@ config KVM_BOOK3S_64_HV
 	select KVM_BOOK3S_HV_POSSIBLE
 	select KVM_GENERIC_MMU_NOTIFIER
 	select CMA
+	select VPA_PMU if HV_PERF_CTRS
 	help
 	  Support running unmodified book3s_64 guest kernels in
 	  virtual machines on POWER7 and newer processors that have
-- 
2.49.0