linux-kernel - Re: [PATCH] RISC-V: KVM: Allow Svnapot extension for Guest/VM

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Date:   Mon, 19 Jun 2023 14:34:33 +0530
From:   Anup Patel <anup@...infault.org>
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>,
        Andrew Jones <ajones@...tanamicro.com>, kvm@...r.kernel.org,
        kvm-riscv@...ts.infradead.org, linux-riscv@...ts.infradead.org,
        linux-kernel@...r.kernel.org
Subject: Re: [PATCH] RISC-V: KVM: Allow Svnapot extension for Guest/VM

On Mon, Jun 12, 2023 at 4:41 PM Anup Patel <apatel@...tanamicro.com> wrote:
>
> We extend the KVM ISA extension ONE_REG interface to allow KVM
> user space to detect and enable Svnapot extension for Guest/VM.
>
> Signed-off-by: Anup Patel <apatel@...tanamicro.com>
> Reviewed-by: Andrew Jones <ajones@...tanamicro.com>

Queued this patch for Linux-6.5

Thanks,
Anup

> ---
>  arch/riscv/include/uapi/asm/kvm.h | 1 +
>  arch/riscv/kvm/vcpu.c             | 2 ++
>  2 files changed, 3 insertions(+)
>
> diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
> index 61d7fecc4899..a1ca18408bbd 100644
> --- a/arch/riscv/include/uapi/asm/kvm.h
> +++ b/arch/riscv/include/uapi/asm/kvm.h
> @@ -122,6 +122,7 @@ enum KVM_RISCV_ISA_EXT_ID {
>         KVM_RISCV_ISA_EXT_ZICBOZ,
>         KVM_RISCV_ISA_EXT_ZBB,
>         KVM_RISCV_ISA_EXT_SSAIA,
> +       KVM_RISCV_ISA_EXT_SVNAPOT,
>         KVM_RISCV_ISA_EXT_MAX,
>  };
>
> diff --git a/arch/riscv/kvm/vcpu.c b/arch/riscv/kvm/vcpu.c
> index 2db62c6c0d3e..7b355900f235 100644
> --- a/arch/riscv/kvm/vcpu.c
> +++ b/arch/riscv/kvm/vcpu.c
> @@ -61,6 +61,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
>         KVM_ISA_EXT_ARR(SSAIA),
>         KVM_ISA_EXT_ARR(SSTC),
>         KVM_ISA_EXT_ARR(SVINVAL),
> +       KVM_ISA_EXT_ARR(SVNAPOT),
>         KVM_ISA_EXT_ARR(SVPBMT),
>         KVM_ISA_EXT_ARR(ZBB),
>         KVM_ISA_EXT_ARR(ZIHINTPAUSE),
> @@ -102,6 +103,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
>         case KVM_RISCV_ISA_EXT_SSAIA:
>         case KVM_RISCV_ISA_EXT_SSTC:
>         case KVM_RISCV_ISA_EXT_SVINVAL:
> +       case KVM_RISCV_ISA_EXT_SVNAPOT:
>         case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
>         case KVM_RISCV_ISA_EXT_ZBB:
>                 return false;
> --
> 2.34.1
>
>
> --
> kvm-riscv mailing list
> kvm-riscv@...ts.infradead.org
> http://lists.infradead.org/mailman/listinfo/kvm-riscv

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