Re: [PATCH v2 11/12] RISC-V: KVM: Allow Zcmop extension for Guest/VM

On Thu, Apr 18, 2024 at 6:14 PM Clément Léger cleger@rivosinc.com wrote:

Extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable Zcmop extension for Guest/VM.

Signed-off-by: Clément Léger cleger@rivosinc.com

LGTM.

Reviewed-by: Anup Patel anup@brainfault.org Acked-by: Anup Patel anup@brainfault.org

Thanks, Anup

---

arch/riscv/include/uapi/asm/kvm.h | 1 + arch/riscv/kvm/vcpu_onereg.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 57db3fea679f..0366389a0bae 100644 --- a/arch/riscv/include/uapi/asm/kvm.h +++ b/arch/riscv/include/uapi/asm/kvm.h @@ -172,6 +172,7 @@ enum KVM_RISCV_ISA_EXT_ID { KVM_RISCV_ISA_EXT_ZCB, KVM_RISCV_ISA_EXT_ZCD, KVM_RISCV_ISA_EXT_ZCF,

•   KVM_RISCV_ISA_EXT_ZCMOP,
    KVM_RISCV_ISA_EXT_MAX,
  

};

diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index a2747a6dbdb6..77a0d337faeb 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -52,6 +52,7 @@ static const unsigned long kvm_isa_ext_arr[] = { KVM_ISA_EXT_ARR(ZCB), KVM_ISA_EXT_ARR(ZCD), KVM_ISA_EXT_ARR(ZCF),

•   KVM_ISA_EXT_ARR(ZCMOP),
    KVM_ISA_EXT_ARR(ZFA),
    KVM_ISA_EXT_ARR(ZFH),
    KVM_ISA_EXT_ARR(ZFHMIN),
  

@@ -136,6 +137,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext) case KVM_RISCV_ISA_EXT_ZCB: case KVM_RISCV_ISA_EXT_ZCD: case KVM_RISCV_ISA_EXT_ZCF:

•   case KVM_RISCV_ISA_EXT_ZCMOP:
    case KVM_RISCV_ISA_EXT_ZFA:
    case KVM_RISCV_ISA_EXT_ZFH:
    case KVM_RISCV_ISA_EXT_ZFHMIN:
  

-- 2.43.0