diff options
Diffstat (limited to 'target/i386/kvm.c')
| -rw-r--r-- | target/i386/kvm.c | 15 |
1 files changed, 14 insertions, 1 deletions
diff --git a/target/i386/kvm.c b/target/i386/kvm.c index 032f0ad2fc..ebb2d23aa4 100644 --- a/target/i386/kvm.c +++ b/target/i386/kvm.c @@ -601,7 +601,8 @@ static bool hyperv_enabled(X86CPU *cpu) cpu->hyperv_runtime || cpu->hyperv_synic || cpu->hyperv_stimer || - cpu->hyperv_reenlightenment); + cpu->hyperv_reenlightenment || + cpu->hyperv_tlbflush); } static int kvm_arch_set_tsc_khz(CPUState *cs) @@ -839,6 +840,18 @@ int kvm_arch_init_vcpu(CPUState *cs) if (cpu->hyperv_vapic) { c->eax |= HV_APIC_ACCESS_RECOMMENDED; } + if (cpu->hyperv_tlbflush) { + if (kvm_check_extension(cs->kvm_state, + KVM_CAP_HYPERV_TLBFLUSH) <= 0) { + fprintf(stderr, "Hyper-V TLB flush support " + "(requested by 'hv-tlbflush' cpu flag) " + " is not supported by kernel\n"); + return -ENOSYS; + } + c->eax |= HV_REMOTE_TLB_FLUSH_RECOMMENDED; + c->eax |= HV_EX_PROCESSOR_MASKS_RECOMMENDED; + } + c->ebx = cpu->hyperv_spinlock_attempts; c = &cpuid_data.entries[cpuid_i++]; |