diff options
Diffstat (limited to 'arch/arm64')
| -rw-r--r-- | arch/arm64/kvm/guest.c | 7 |
1 files changed, 7 insertions, 0 deletions
diff --git a/arch/arm64/kvm/guest.c b/arch/arm64/kvm/guest.c index 5bb909c3ff7c..3ae2f82fca46 100644 --- a/arch/arm64/kvm/guest.c +++ b/arch/arm64/kvm/guest.c @@ -264,6 +264,13 @@ static int set_sve_vls(struct kvm_vcpu *vcpu, const struct kvm_one_reg *reg) if (max_vq > sve_vq_from_vl(kvm_sve_max_vl)) return -EINVAL; + /* + * Vector lengths supported by the host can't currently be + * hidden from the guest individually: instead we can only set a + * maxmium via ZCR_EL2.LEN. So, make sure the available vector + * lengths match the set requested exactly up to the requested + * maximum: + */ for (vq = SVE_VQ_MIN; vq <= max_vq; ++vq) if (vq_present(&vqs, vq) != sve_vq_available(vq)) return -EINVAL; |