KVM: x86/pmu: Expose enable_mediated_pmu parameter to user space

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Expose enable_mediated_pmu parameter to user space, i.e. allow userspace
to enable/disable mediated vPMU support.

Document the mediated versus perf-based behavior as part of the
kernel-parameters.txt entry, and opportunistically add an entry for the
core enable_pmu param as well.

Signed-off-by: Dapeng Mi <dapeng1.mi@linux.intel.com>
Signed-off-by: Mingwei Zhang <mizhang@google.com>
Tested-by: Xudong Hao <xudong.hao@intel.com>
Co-developed-by: Sean Christopherson <seanjc@google.com>
Tested-by: Manali Shukla <manali.shukla@amd.com>
Link: https://patch.msgid.link/20251206001720.468579-34-seanjc@google.com
Signed-off-by: Sean Christopherson <seanjc@google.com>

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Dapeng Mi 2025-12-05 16:17:09 -08:00 • committed by Sean Christopherson

parent 3b36160d94

commit 860bcb1021

3 changed files with 53 additions and 0 deletions

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49

Documentation/admin-guide/kernel-parameters.txt

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2

arch/x86/kvm/svm/svm.c

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2

arch/x86/kvm/vmx/vmx.c

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