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    SubjectRe: [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
    >

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