Re: [Xen-devel] [PATCH 2/2] xen: add sysfs node for guest type

From: Jan Beulich
Date: Mon May 22 2017 - 11:40:57 EST


>>> On 22.05.17 at 17:28, <jgross@xxxxxxxx> wrote:
> On 22/05/17 17:23, Konrad Rzeszutek Wilk wrote:
>> On Mon, May 22, 2017 at 10:57:00AM +0200, Juergen Gross wrote:
>>> --- a/Documentation/ABI/testing/sysfs-hypervisor
>>> +++ b/Documentation/ABI/testing/sysfs-hypervisor
>>> @@ -19,6 +19,19 @@ Contact: xen-devel@xxxxxxxxxxxxxxxxxxxx
>>> Description:
>>> Compiler which was used to build the Xen hypervisor
>>>
>>> +What: /sys/hypervisor/guest_type
>>> +Date: May 2017
>>> +KernelVersion: 4.12
>>> +Contact: xen-devel@xxxxxxxxxxxxxxxxxxxx
>>> +Description:
>>> + Type of guest:
>>> + "native": standard guest type on arm
>>> + "HVM": fully virtualized guest (x86)
>>> + "PV": paravirtualized guest (x86)
>>> + "PVH": fully virtualized guest without legacy emulation (x86)
>>> + "PVHVM": fully virtualized guest using paravirtualized
>>> + interfaces (e.g. interrupts, timers) (x86)
>>
>> What about KVM? Shouldn't that also be here?
>
> /sys/hypervisor is Xen-only (at least up to now).

How that? It's being created by drivers/base/hypervisor.c,
and iirc had been introduced for s390 originally.

Jan