On Thu, Apr 18, 2024 at 6:14 PM Clément Léger <cleger@xxxxxxxxxxxx> wrote:
>
> Extend the KVM ISA extension ONE_REG interface to allow KVM user space
> to detect and enable Zca, Zcf, Zcd and Zcb extensions for Guest/VM.
>
> Signed-off-by: Clément Léger <cleger@xxxxxxxxxxxx>
LGTM.
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx>
Acked-by: Anup Patel <anup@xxxxxxxxxxxxxx>
Thanks,
Anup
> ---
> arch/riscv/include/uapi/asm/kvm.h | 4 ++++
> arch/riscv/kvm/vcpu_onereg.c | 8 ++++++++
> 2 files changed, 12 insertions(+)
>
> diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
> index 35a12aa1953e..57db3fea679f 100644
> --- a/arch/riscv/include/uapi/asm/kvm.h
> +++ b/arch/riscv/include/uapi/asm/kvm.h
> @@ -168,6 +168,10 @@ enum KVM_RISCV_ISA_EXT_ID {
> KVM_RISCV_ISA_EXT_ZTSO,
> KVM_RISCV_ISA_EXT_ZACAS,
> KVM_RISCV_ISA_EXT_ZIMOP,
> + KVM_RISCV_ISA_EXT_ZCA,
> + KVM_RISCV_ISA_EXT_ZCB,
> + KVM_RISCV_ISA_EXT_ZCD,
> + KVM_RISCV_ISA_EXT_ZCF,
> KVM_RISCV_ISA_EXT_MAX,
> };
>
> diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
> index 12436f6f0d20..a2747a6dbdb6 100644
> --- a/arch/riscv/kvm/vcpu_onereg.c
> +++ b/arch/riscv/kvm/vcpu_onereg.c
> @@ -48,6 +48,10 @@ static const unsigned long kvm_isa_ext_arr[] = {
> KVM_ISA_EXT_ARR(ZBKC),
> KVM_ISA_EXT_ARR(ZBKX),
> KVM_ISA_EXT_ARR(ZBS),
> + KVM_ISA_EXT_ARR(ZCA),
> + KVM_ISA_EXT_ARR(ZCB),
> + KVM_ISA_EXT_ARR(ZCD),
> + KVM_ISA_EXT_ARR(ZCF),
> KVM_ISA_EXT_ARR(ZFA),
> KVM_ISA_EXT_ARR(ZFH),
> KVM_ISA_EXT_ARR(ZFHMIN),
> @@ -128,6 +132,10 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
> case KVM_RISCV_ISA_EXT_ZBKC:
> case KVM_RISCV_ISA_EXT_ZBKX:
> case KVM_RISCV_ISA_EXT_ZBS:
> + case KVM_RISCV_ISA_EXT_ZCA:
> + case KVM_RISCV_ISA_EXT_ZCB:
> + case KVM_RISCV_ISA_EXT_ZCD:
> + case KVM_RISCV_ISA_EXT_ZCF:
> case KVM_RISCV_ISA_EXT_ZFA:
> case KVM_RISCV_ISA_EXT_ZFH:
> case KVM_RISCV_ISA_EXT_ZFHMIN:
> --
> 2.43.0
>
