diff options
| -rw-r--r-- | arch/riscv/kvm/vcpu_onereg.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/riscv/kvm/vcpu_onereg.c b/arch/riscv/kvm/vcpu_onereg.c index 971a2eb83180..a0b0364b038f 100644 --- a/arch/riscv/kvm/vcpu_onereg.c +++ b/arch/riscv/kvm/vcpu_onereg.c @@ -190,6 +190,13 @@ static int kvm_riscv_vcpu_set_reg_config(struct kvm_vcpu *vcpu, if (fls(reg_val) >= RISCV_ISA_EXT_BASE) return -EINVAL; + /* + * Return early (i.e. do nothing) if reg_val is the same + * value retrievable via kvm_riscv_vcpu_get_reg_config(). + */ + if (reg_val == (vcpu->arch.isa[0] & KVM_RISCV_BASE_ISA_MASK)) + break; + if (!vcpu->arch.ran_atleast_once) { /* Ignore the enable/disable request for certain extensions */ for (i = 0; i < RISCV_ISA_EXT_BASE; i++) { |