Re: VCPUOP_send_nmi returns -38

From: Andriy Gapon <avg_at_FreeBSD.org>
Date: Tue, 11 Jan 2022 10:28:01 UTC
On 11/01/2022 12:26, Roger Pau Monné wrote:
> On Tue, Jan 11, 2022 at 12:07:28PM +0200, Andriy Gapon wrote:
>> On 11/01/2022 11:50, Andriy Gapon wrote:
>>>
>>> Recently I got a report of crashes related to using procstat -k on one
>>> of our systems.  The system runs FreeBSD 12.2 on an AWS Xen-based
>>> instance (can get more specifics about it later).
>>
>> The instance type is t2.large.
>> Here are all lines from verbose boot that mention Xen:
>>
>> XEN: Hypervisor version 4.2 detected.
>> Disabling MSI-X interrupt migration due to Xen hypervisor bug.
>> XEN: disabling emulated disks
>> XEN: disabling emulated nics
>> Hypervisor: Origin = "XenVMMXenVMM"
>> x2APIC available but disabled due to running under XEN
> 
> Thanks. I've asked someone at AWS for comments. I guess the only way
> to workaround this is to switch back to using the emulated APIC. I
> will try to prepare a patch later.

Thank you very much!


-- 
Andriy Gapon