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RISC-V: KVM: Allow Zbb extension for Guest/VM
We extend the KVM ISA extension ONE_REG interface to allow KVM user space to detect and enable Zbb extension for Guest/VM. Signed-off-by: Anup Patel <apatel@ventanamicro.com> Reviewed-by: Atish Patra <atishp@rivosinc.com> Reviewed-by: Andrew Jones <ajones@ventanamicro.com> Signed-off-by: Anup Patel <anup@brainfault.org>
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2 changed files with 3 additions and 0 deletions
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@ -106,6 +106,7 @@ enum KVM_RISCV_ISA_EXT_ID {
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KVM_RISCV_ISA_EXT_SVINVAL,
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KVM_RISCV_ISA_EXT_ZIHINTPAUSE,
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KVM_RISCV_ISA_EXT_ZICBOM,
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KVM_RISCV_ISA_EXT_ZBB,
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KVM_RISCV_ISA_EXT_MAX,
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};
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@ -61,6 +61,7 @@ static const unsigned long kvm_isa_ext_arr[] = {
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KVM_ISA_EXT_ARR(SSTC),
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KVM_ISA_EXT_ARR(SVINVAL),
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KVM_ISA_EXT_ARR(SVPBMT),
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KVM_ISA_EXT_ARR(ZBB),
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KVM_ISA_EXT_ARR(ZIHINTPAUSE),
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KVM_ISA_EXT_ARR(ZICBOM),
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};
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@ -99,6 +100,7 @@ static bool kvm_riscv_vcpu_isa_disable_allowed(unsigned long ext)
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case KVM_RISCV_ISA_EXT_SSTC:
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case KVM_RISCV_ISA_EXT_SVINVAL:
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case KVM_RISCV_ISA_EXT_ZIHINTPAUSE:
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case KVM_RISCV_ISA_EXT_ZBB:
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return false;
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default:
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break;
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