linux-kernel - Re: [PATCH v12 01/31] LoongArch: KVM: Add kvm related header files

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Message-ID: <e013dd26-40e5-0da7-8648-83fd9906b207@redhat.com>
Date:   Mon, 5 Jun 2023 12:18:45 +0200
From:   Paolo Bonzini <pbonzini@...hat.com>
To:     Huacai Chen <chenhuacai@...nel.org>,
        Tianrui Zhao <zhaotianrui@...ngson.cn>
Cc:     linux-kernel@...r.kernel.org, kvm@...r.kernel.org,
        WANG Xuerui <kernel@...0n.name>,
        Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
        loongarch@...ts.linux.dev, Jens Axboe <axboe@...nel.dk>,
        Mark Brown <broonie@...nel.org>,
        Alex Deucher <alexander.deucher@....com>,
        Oliver Upton <oliver.upton@...ux.dev>, maobibo@...ngson.cn,
        Xi Ruoyao <xry111@...111.site>
Subject: Re: [PATCH v12 01/31] LoongArch: KVM: Add kvm related header files

On 6/5/23 07:00, Huacai Chen wrote:
> I found something like this in our internal repo.
> 
> #define KVM_CAP_LOONGARCH_FPU 228
> #define KVM_CAP_LOONGARCH_LSX 229
> #define KVM_CAP_LOONGARCH_VZ 230
> #define KVM_LOONGARCH_GET_VCPU_STATE    _IOR(KVMIO,   0xd0, struct
> kvm_loongarch_vcpu_state)
> #define KVM_LOONGARCH_SET_VCPU_STATE    _IOW(KVMIO,   0xd1, struct
> kvm_loongarch_vcpu_state)
> #define KVM_LOONGARCH_GET_CPUCFG           _IOR(KVMIO,   0xd2, struct
> kvm_cpucfg)
> #define KVM_LOONGARCH_GET_IOCSR              _IOR(KVMIO,   0xd3,
> struct kvm_iocsr_entry)
> #define KVM_LOONGARCH_SET_IOCSR              _IOW(KVMIO,   0xd4,
> struct kvm_iocsr_entry)
> #define KVM_LOONGARCH_SET_CPUCFG           _IOR(KVMIO,   0xd5, struct
> kvm_cpucfg)
> 
> These are all UAPI definitions, if they are needed (at present or in
> future), they should be merged in the first wave of KVM.

No, dead definitions should never be mergd.

Paolo