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    Subject[PATCH 04/10] RISC-V: KVM: Allow Zca, Zcf, Zcd and Zcb extensions for Guest/VM
    Date
    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@rivosinc.com>
    ---
    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 c6ee763422f2..7d47fc910bd9 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

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