On Wed, Jun 19, 2024 at 9:11 PM Clément Léger <cleger@xxxxxxxxxxxx> wrote:
>
> Extend the KVM ISA extension ONE_REG interface to allow KVM user space
> to detect and enable Zaamo/Zalrsc extensions for Guest/VM.
>
> Signed-off-by: Clément Léger <cleger@xxxxxxxxxxxx>
LGTM.
Reviewed-by: Anup Patel <anup@xxxxxxxxxxxxxx>
Regards,
Anup
> ---
> arch/riscv/include/uapi/asm/kvm.h | 2 ++
> arch/riscv/kvm/vcpu_onereg.c | 4 ++++
> 2 files changed, 6 insertions(+)
>
> diff --git a/arch/riscv/include/uapi/asm/kvm.h b/arch/riscv/include/uapi/asm/kvm.h
> index a6215634df7c..f10c6e133d4d 100644
> --- a/arch/riscv/include/uapi/asm/kvm.h
> +++ b/arch/riscv/include/uapi/asm/kvm.h
> @@ -174,6 +174,8 @@ enum KVM_RISCV_ISA_EXT_ID {
> KVM_RISCV_ISA_EXT_ZCD,
> KVM_RISCV_ISA_EXT_ZCF,
> KVM_RISCV_ISA_EXT_ZCMOP,
> + KVM_RISCV_ISA_EXT_ZAAMO,
> + KVM_RISCV_ISA_EXT_ZALRSC,
> KVM_RISCV_ISA_EXT_MAX,
> };
>
> diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c
> index fa5ee544bc69..0972a997beca 100644
> --- a/arch/riscv/kvm/vcpu_onereg.c
> +++ b/arch/riscv/kvm/vcpu_onereg.c
> @@ -41,7 +41,9 @@ static const unsigned long kvm_isa_ext_arr[] = {
> KVM_ISA_EXT_ARR(SVINVAL),
> KVM_ISA_EXT_ARR(SVNAPOT),
> KVM_ISA_EXT_ARR(SVPBMT),
> + KVM_ISA_EXT_ARR(ZAAMO),
> KVM_ISA_EXT_ARR(ZACAS),
> + KVM_ISA_EXT_ARR(ZALRSC),
> KVM_ISA_EXT_ARR(ZBA),
> KVM_ISA_EXT_ARR(ZBB),
> KVM_ISA_EXT_ARR(ZBC),
> @@ -131,7 +133,9 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
> case KVM_RISCV_ISA_EXT_SSTC:
> case KVM_RISCV_ISA_EXT_SVINVAL:
> case KVM_RISCV_ISA_EXT_SVNAPOT:
> + case KVM_RISCV_ISA_EXT_ZAAMO:
> case KVM_RISCV_ISA_EXT_ZACAS:
> + case KVM_RISCV_ISA_EXT_ZALRSC:
> case KVM_RISCV_ISA_EXT_ZBA:
> case KVM_RISCV_ISA_EXT_ZBB:
> case KVM_RISCV_ISA_EXT_ZBC:
> --
> 2.45.2
>
