linux-kernel - Re: [PATCH v3 6/8] RISC-V: KVM: Add ONE

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Date:   Mon, 3 Apr 2023 13:31:18 +0200
From:   Andrew Jones <ajones@...tanamicro.com>
To:     Anup Patel <apatel@...tanamicro.com>
Cc:     Paolo Bonzini <pbonzini@...hat.com>,
        Atish Patra <atishp@...shpatra.org>,
        Palmer Dabbelt <palmer@...belt.com>,
        Paul Walmsley <paul.walmsley@...ive.com>,
        Anup Patel <anup@...infault.org>, kvm@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH v3 6/8] RISC-V: KVM: Add ONE_REG interface for AIA CSRs

On Mon, Apr 03, 2023 at 03:03:08PM +0530, Anup Patel wrote:
> We implement ONE_REG interface for AIA CSRs as a separate subtype
> under the CSR ONE_REG interface.
> 
> Signed-off-by: Anup Patel <apatel@...tanamicro.com>
> ---
>  arch/riscv/include/uapi/asm/kvm.h | 8 ++++++++
>  arch/riscv/kvm/vcpu.c             | 8 ++++++++
>  2 files changed, 16 insertions(+)
> 
> diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
> index 182023dc9a51..cbc3e74fa670 100644
> --- a/arch/riscv/include/uapi/asm/kvm.h
> +++ b/arch/riscv/include/uapi/asm/kvm.h
> @@ -79,6 +79,10 @@ struct kvm_riscv_csr {
>  	unsigned long scounteren;
>  };
>  
> +/* AIA CSR registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */
> +struct kvm_riscv_aia_csr {
> +};
> +
>  /* TIMER registers for KVM_GET_ONE_REG and KVM_SET_ONE_REG */
>  struct kvm_riscv_timer {
>  	__u64 frequency;
> @@ -107,6 +111,7 @@ enum KVM_RISCV_ISA_EXT_ID {
>  	KVM_RISCV_ISA_EXT_ZIHINTPAUSE,
>  	KVM_RISCV_ISA_EXT_ZICBOM,
>  	KVM_RISCV_ISA_EXT_ZBB,

Looks like this patch is also based on "[PATCH] RISC-V: KVM: Allow Zbb
extension for Guest/VM"

Thanks,
drew