> On 16. Apr 2020, at 12:36, Andrew Cooper <andrew.coop...@citrix.com> wrote:
>
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> On 16/04/2020 10:41, Pawel Wieczorkiewicz wrote:
>> @@ -272,9 +274,23 @@ void arch_setup(void)
>>
>> init_hypercalls();
>>
>> - if ( !is_initdomain() )
>> + xen_version = hypercall_xen_version(XENVER_version, NULL);
>> + if ( version )
>> + *version = xen_version;
>> +
>> + /*
>> + * The setup_pv_console function registers a writing function
>> + * that makes hvm guests crash on Xen 4.2
>
> This comment in particular is rather concerning. Even if there is a
> configuration issue in 4.2 stopping the PV console from being wired up
> properly, nothing involved in transmitting on the console should crash
> the guest.
>
I am again a little short on details here. Maybe Paul could chime in.
But, I vagualy remember it was something about the init_pv_console()’s:
if ( port >= (sizeof(shared_info.evtchn_pending) * CHAR_BIT) )
panic("evtchn %u out of evtchn_pending[] range\n", port);
> ~Andrew
Best Regards,
Pawel Wieczorkiewicz
wipa...@amazon.com
Amazon Development Center Germany GmbH
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