RISC-V: KVM: Implement get event info function

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The new get_event_info funciton allows the guest to query the presence
of multiple events with single SBI call. Currently, the perf driver
in linux guest invokes it for all the standard SBI PMU events. Support
the SBI function implementation in KVM as well.

Reviewed-by: Anup Patel <anup@brainfault.org>
Signed-off-by: Atish Patra <atishp@rivosinc.com>
Acked-by: Paul Walmsley <pjw@kernel.org>
Link: https://lore.kernel.org/r/20250909-pmu_event_info-v6-7-d8f80cacb884@rivosinc.com
Signed-off-by: Anup Patel <anup@brainfault.org>

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Atish Patra 2025-09-09 00:03:26 -07:00 • committed by Anup Patel

parent 41f4d0cc33

commit e309fd113b

3 changed files with 65 additions and 0 deletions

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3

arch/riscv/include/asm/kvm_vcpu_pmu.h

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59

arch/riscv/kvm/vcpu_pmu.c

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3

arch/riscv/kvm/vcpu_sbi_pmu.c

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