* [PATCH v2] KVM: PPC: Kconfig: Enable CONFIG_VPA_PMU with KVM
@ 2026-05-18 4:41 Gautam Menghani
2026-05-19 1:01 ` Sean Christopherson
0 siblings, 1 reply; 2+ messages in thread
From: Gautam Menghani @ 2026-05-18 4:41 UTC (permalink / raw)
To: maddy, npiggin, mpe, chleroy, atrajeev
Cc: Gautam Menghani, linuxppc-dev, kvm, linux-kernel, stable
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-6.19.12-200.fc43.ppc64le | grep VPA_PMU
# CONFIG_VPA_PMU is not set
Fixes: 176cda0619b6c ("powerpc/perf: Add perf interface to expose vpa counters")
Cc: stable@vger.kernel.org # v6.13+
Signed-off-by: Gautam Menghani <gautam@linux.ibm.com>
---
v1 -> v2:
1. Rebased on latest master
arch/powerpc/kvm/Kconfig | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/powerpc/kvm/Kconfig b/arch/powerpc/kvm/Kconfig
index 9a0d1c1aca6c..56e86b46ff13 100644
--- a/arch/powerpc/kvm/Kconfig
+++ b/arch/powerpc/kvm/Kconfig
@@ -82,6 +82,7 @@ config KVM_BOOK3S_64_HV
select KVM_BOOK3S_HV_POSSIBLE
select KVM_BOOK3S_HV_PMU
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
--
2.53.0
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [PATCH v2] KVM: PPC: Kconfig: Enable CONFIG_VPA_PMU with KVM
2026-05-18 4:41 [PATCH v2] KVM: PPC: Kconfig: Enable CONFIG_VPA_PMU with KVM Gautam Menghani
@ 2026-05-19 1:01 ` Sean Christopherson
0 siblings, 0 replies; 2+ messages in thread
From: Sean Christopherson @ 2026-05-19 1:01 UTC (permalink / raw)
To: Gautam Menghani
Cc: maddy, npiggin, mpe, chleroy, atrajeev, linuxppc-dev, kvm,
linux-kernel, stable
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?
^ permalink raw reply [flat|nested] 2+ messages in thread
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