Subject: Re: [PATCH v2 22/29] LoongArch: KVM: Implement handle idle exception
To:     Paolo Bonzini <pbonzini@redhat.com>
References: <20230220065735.1282809-1-zhaotianrui@loongson.cn>
 <20230220065735.1282809-23-zhaotianrui@loongson.cn>
 <06d61407-00b9-812c-e5b3-de585c47ae6b@redhat.com>
Cc:     Huacai Chen <chenhuacai@kernel.org>,
        WANG Xuerui <kernel@xen0n.name>,
        Greg Kroah-Hartman <gregkh@linuxfoundation.org>,
        loongarch@lists.linux.dev, linux-kernel@vger.kernel.org,
        kvm@vger.kernel.org, Jens Axboe <axboe@kernel.dk>,
        Mark Brown <broonie@kernel.org>,
        Alex Deucher <alexander.deucher@amd.com>,
        Oliver Upton <oliver.upton@linux.dev>, maobibo@loongson.cn
From:   Tianrui Zhao <zhaotianrui@loongson.cn>
Message-ID: <5d7fe795-66b9-7a07-b754-77327886c6c6@loongson.cn>
Date:   Tue, 21 Feb 2023 17:48:40 +0800
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在 2023年02月21日 02:40, Paolo Bonzini 写道:
> On 2/20/23 07:57, Tianrui Zhao wrote:
>> +int _kvm_emu_idle(struct kvm_vcpu *vcpu)
>> +{
>> +    ++vcpu->stat.idle_exits;
>> +    trace_kvm_exit(vcpu, KVM_TRACE_EXIT_IDLE);
>
> Please add a separate tracepoint, don't overload trace_kvm_exit().
>
> Likewise for _kvm_trap_handle_gspr().
>
> I think _kvm_trap_handle_gspr() should have a tracepoint whose 
> parameter is inst.word.

Thanks, I will add the tracepoint for _kvm_emu_idle and 
_kvm_trap_handle_gspr.

Thanks
Tianrui Zhao

>
> Paolo
>
>> +    if (!vcpu->arch.irq_pending) {
>> +        kvm_save_timer(vcpu);
>> +        kvm_vcpu_block(vcpu);
>> +    }
>> +
>> +    return EMULATE_DONE;