Commit c7fa3c48 authored by Anup Patel's avatar Anup Patel Committed by Anup Patel

RISC-V: KVM: Treat SBI HFENCE calls as NOPs

We should treat SBI HFENCE calls as NOPs until nested virtualization
is supported by KVM RISC-V. This will help us test booting a hypervisor
under KVM RISC-V.
Signed-off-by: default avatarAnup Patel <apatel@ventanamicro.com>
Reviewed-by: default avatarAtish Patra <atishp@rivosinc.com>
Signed-off-by: default avatarAnup Patel <anup@brainfault.org>
parent b4bbb95e
...@@ -117,7 +117,11 @@ static int kvm_sbi_ext_rfence_handler(struct kvm_vcpu *vcpu, struct kvm_run *run ...@@ -117,7 +117,11 @@ static int kvm_sbi_ext_rfence_handler(struct kvm_vcpu *vcpu, struct kvm_run *run
case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID: case SBI_EXT_RFENCE_REMOTE_HFENCE_GVMA_VMID:
case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA: case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA:
case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID: case SBI_EXT_RFENCE_REMOTE_HFENCE_VVMA_ASID:
/* TODO: implement for nested hypervisor case */ /*
* Until nested virtualization is implemented, the
* SBI HFENCE calls should be treated as NOPs
*/
break;
default: default:
ret = -EOPNOTSUPP; ret = -EOPNOTSUPP;
} }
......
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