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Add KVM_EXIT_KAFL_DISABLE_TIMEOUT to temporarily disable timeouts #51

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Add KVM_EXIT_KAFL_DISABLE_TIMEOUT to temporarily disable timeouts #51

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1 change: 1 addition & 0 deletions linux-headers/linux/kvm.h
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Original file line number Diff line number Diff line change
Expand Up @@ -301,6 +301,7 @@ struct kvm_hyperv_exit {

#define KVM_EXIT_KAFL_REQ_STREAM_DATA_BULK 138
#define KVM_EXIT_KAFL_PERSIST_PAGE_PAST_SNAPSHOT 139
#define KVM_EXIT_KAFL_DISABLE_TIMEOUT 140


#define KVM_CAP_NYX_PT 512
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12 changes: 12 additions & 0 deletions nyx/hypercall/hypercall.c
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Expand Up @@ -826,6 +826,14 @@ static void handle_hypercall_kafl_persist_page_past_snapshot(struct kvm_run *run
fast_reload_blacklist_page(get_fast_reload_snapshot(), phys_addr);
}

static void handle_hypercall_kafl_disable_timeout(struct kvm_run *run,
CPUState *cpu,
uint64_t hypercall_arg)
{
disarm_sigprof_timer(&GET_GLOBAL_STATE()->timeout_detector);
GET_GLOBAL_STATE()->timeout_detector.detection_enabled = false;
}

int handle_kafl_hypercall(struct kvm_run *run,
CPUState *cpu,
uint64_t hypercall,
Expand Down Expand Up @@ -996,6 +1004,10 @@ int handle_kafl_hypercall(struct kvm_run *run,
handle_hypercall_kafl_persist_page_past_snapshot(run, cpu, arg);
ret = 0;
break;
case KVM_EXIT_KAFL_DISABLE_TIMEOUT:
handle_hypercall_kafl_disable_timeout(run, cpu, arg);
ret = 0;
break;
}
return ret;
}