Date:   Mon, 6 Feb 2023 13:04:45 +0100
From:   Andrew Jones <ajones@ventanamicro.com>
To:     Atish Patra <atishp@rivosinc.com>
Cc:     linux-kernel@vger.kernel.org, Anup Patel <anup@brainfault.org>,
        Albert Ou <aou@eecs.berkeley.edu>,
        Atish Patra <atishp@atishpatra.org>,
        Guo Ren <guoren@kernel.org>, Heiko Stuebner <heiko@sntech.de>,
        kvm-riscv@lists.infradead.org, kvm@vger.kernel.org,
        linux-riscv@lists.infradead.org,
        Mark Rutland <mark.rutland@arm.com>,
        Palmer Dabbelt <palmer@dabbelt.com>,
        Paul Walmsley <paul.walmsley@sifive.com>,
        Will Deacon <will@kernel.org>
Subject: Re: [PATCH v5 13/14] RISC-V: KVM: Support firmware events
Message-ID: <20230206120445.6tlsvy5fsawn475v@orel>
References: <20230205011515.1284674-1-atishp@rivosinc.com>
 <20230205011515.1284674-14-atishp@rivosinc.com>
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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@brainfault.org>
> Signed-off-by: Atish Patra <atishp@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@ventanamicro.com>

Thanks,
drew