On 01.12.20 10:36, Sainz Markel wrote:
> After compiling with the suggested flag, the output of the enable command 
> adds another line:
> 
> ~/jailhouse/configs/x86 # jailhouse enable sysconfig.cell 
> 
> Initializing Jailhouse hypervisor v0.12 (197-g2f52a11d) on CPU 1
> Code location: 0xfffffffff0000050
> Using x2APIC
> /home/msainz/Projects/jailhouse/hypervisor/arch/x86/vmx.c:238: returning 
> error -EIO
> JAILHOUSE_ENABLE: Input/output error

That means your host is missing some essential VMX (VT-x) features. Then
it's either a 10 years old machine, or you are running in a VM, and
nesting does not provide sufficient emulation (KVM would).

Jan

> 
> 
> -----Mensaje original-----
> De: [email protected] <[email protected]> En nombre 
> de Sainz Markel
> Enviado el: martes, 1 de diciembre de 2020 10:07
> Para: Jan Kiszka <[email protected]>; [email protected]
> Asunto: RE: JAILHOUSE_ENABLE: Input/output error
> 
> CAUTION: This email originated from outside of the organization. Do not click 
> links or open attachments unless you recognize the sender and know the 
> content is safe.
> 
> 
> I did not. I'm running this on a busybox based Linux. No Python installation 
> possible. I'm going to check the mentioned docs, any other output I could 
> upload for you, not dependant on Python?
> 
> -----Mensaje original-----
> De: Jan Kiszka <[email protected]>
> Enviado el: martes, 1 de diciembre de 2020 10:04
> Para: Sainz Markel <[email protected]>; [email protected]
> Asunto: Re: JAILHOUSE_ENABLE: Input/output error
> 
> CAUTION: This email originated from outside of the organization. Do not click 
> links or open attachments unless you recognize the sender and know the 
> content is safe.
> 
> 
> On 01.12.20 08:48, Sainz Markel wrote:
>> Hi there,
>>
>> After being able to resolve the cmdline issue, the following error 
>> comes up when trying to enable the cell:
>>
>> ~/jailhouse/configs/x86 # jailhouse enable sysconfig.cell
>>
>> Initializing Jailhouse hypervisor v0.12 (197-g2f52a11d) on CPU 5 Code
>> location: 0xfffffffff0000050 Using x2APIC
>> JAILHOUSE_ENABLE: Input/output error
>>
> 
> Did your target pass "jailhouse hardware check"? If so, enable 
> CONFIG_TRACE_ERROR (see Documentation/hypervisor-configuration.md) to get the 
> origin of this.
> 
> Jan
> 
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> Siemens AG, T RDA IOT
> Corporate Competence Center Embedded Linux
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