diff options
| -rw-r--r-- | arch/x86/kvm/hyperv.c | 3 |
1 files changed, 2 insertions, 1 deletions
diff --git a/arch/x86/kvm/hyperv.c b/arch/x86/kvm/hyperv.c index c28a268ec937..8f07b13c9f15 100644 --- a/arch/x86/kvm/hyperv.c +++ b/arch/x86/kvm/hyperv.c @@ -1819,7 +1819,8 @@ static u64 kvm_hv_flush_tlb(struct kvm_vcpu *vcpu, struct kvm_hv_hcall *hc) if (!all_cpus) { if (hc->fast) { - if (sparse_banks_len > HV_HYPERCALL_MAX_XMM_REGISTERS - 1) + /* XMM0 is already consumed, each XMM holds two sparse banks. */ + if (sparse_banks_len > 2 * (HV_HYPERCALL_MAX_XMM_REGISTERS - 1)) return HV_STATUS_INVALID_HYPERCALL_INPUT; for (i = 0; i < sparse_banks_len; i += 2) { sparse_banks[i] = sse128_lo(hc->xmm[i / 2 + 1]); |