[PATCH v5 13/14] RISC-V: KVM: Support firmware events

[Andrew Jones]

On Sat, Feb 04, 2023 at 05:15:14PM -0800, Atish Patra wrote:
> SBI PMU extension defines a set of firmware events which can provide
> useful information to guests about the number of SBI calls. As
> hypervisor implements the SBI PMU extension, these firmware events
> correspond to ecall invocations between VS->HS mode. All other firmware
> events will always report zero if monitored as KVM doesn't implement them.
> 
> This patch adds all the infrastructure required to support firmware
> events.
> 
> Reviewed-by: Anup Patel <anup at brainfault.org>
> Signed-off-by: Atish Patra <atishp at rivosinc.com>
> ---
>  arch/riscv/include/asm/kvm_vcpu_pmu.h |  17 ++++
>  arch/riscv/kvm/vcpu_pmu.c             | 141 ++++++++++++++++++++------
>  2 files changed, 125 insertions(+), 33 deletions(-)
>

Reviewed-by: Andrew Jones <ajones at ventanamicro.com>

Thanks,
drew