Re: [Xen-devel] [For 4.9] Updating https://wiki.xenproject.org/wiki/Xen_Project_Release_Features to reflect support status of new features

[Lars Kurth <lars.kurth@xxxxxxxxxx>]

On 27/06/2017, 11:57, "Juergen Groß" <jgross@xxxxxxxx> wrote:

>On 06/27/2017 12:33 PM, George Dunlap wrote:
>> On Tue, Jun 27, 2017 at 9:53 AM, Lars Kurth <lars.kurth@xxxxxxxxxx>
>>wrote:
>>> Hi all, (I think I CCed all stake-holders)
>>>
>>> to finish off the release documentation for 4.9, I need to add an extra
>>> column to 
>>>https://wiki.xenproject.org/wiki/Xen_Project_Release_Features –
>>> because I was travelling, this dropped of my radar. There several
>>>decisions
>>> to be made:
>>> A) Decide which "features" to add
>>> B) Decide on the status of the feature
>>> C) Deal with status changes of any past features
>>>
>>> The first goal would be to decide on A and any new "features" under C.
>>>For
>>> B, I am OK to add "???" for now and point to this thread, until we have
>>> concluded the discussion
>>>
>>> Note that I tracked some of this as preparation for getting CNA status.
>>> Items marked with * are not yet in the discussion document that I
>>>created
>>> for the security team and which we intend to discuss at the summit.
>>>
>>> For all of these, the naming convention is "Section in document" >
>>>"Feature"
>>> : "Support status". The definition of support status is added at the
>>>end of
>>> the mail: note that the text has not yet been fully agreed, but seems
>>>to
>>> reflect fairly well how we handled stuff in the past.
>>>
>>> == On A / B: I think we should add ==
>>> - Resource Management > Null Scheduler : tech preview or experimental
>> 
>> I think that the interface is probably in a final form, the code is
>> complete, and there are no known bugs or issues; so I'd say tech
>> preview.
>> 
>> Dario, any opinions?
>> 
>>> - Virtual Firmware or PV Bootloader Support (not sure which) >
>>>x86/Boot Xen
>>> on EFI platforms using GRUB2*  : ???
>> 
>> If I'm interpreting your phrase correctly, this probably goes under
>> "interoperability / hardware support"
>> 
>>> - Hardware > ARM/Alternative Runtime Patching (ARM32 and ARM64): ???
>>>[note
>>> that this should probably have been added for 4.8, but I didn't add it]
>>> - Hardware > ARM/System Error Protection* : ???
>>> - Hardware > ARM/Wait for Virtual Interrupt* : ???
>>> - Hardware > x86/AVX512/Neural Network Instructions AVX512_4VNNIW* :
>>>???
>>> - Hardware > x86/AVX512/Multiply Accumulation Single precision
>>> AVX512_4FMAPS* : ???
>>> - Device Models > DMOP (Device Model Operation Hypercall)  : ???
>> 
>> This is already used by default in the version of qemu released in
>> 4.9, right?  I think I'd call that "supported".
>> 
>>> == On C ==
>>> - Security > Live Patching - see
>>> 
>>>https://lists.xenproject.org/archives/html/xen-devel/2017-06/threads.htm
>>>l#03039
>>> - Security > Alternative 2pm : Supported – I think we should split
>>>this out
>>> – it is currently implicitly covered under "Virtual Machine
>>>Introspection"
>>>
>>> If we introduce a new heading "PV Protocols and Drivers" we should
>>>probably
>>> list all the common ones as supported in this heading, e.g.
>>> - PV Protocols and Drivers* > default (net, block, console, keyboard,
>>>mouse)
>>> : supported
>> 
>> I don't think there are keyboard and mouse PV protocols.  On the other
>> hand, I just realized that I have no idea how one uses PV guests with
>> a framebuffer but no mouse.
>
>xen/include/public/io/kbdif.h does exist it it is being used.
>
>>> There are also USB and framebuffer, which I am not sure whether they
>>>should
>>> be supported and if not, what their status is
>>> - PV Protocols and Drivers* > USB : ???
>> 
>> This one has been around a long time, then languished for a bit, but
>> it seems has been picked up by SuSE again.
>> 
>> I don't *think* we're doing USB testing in osstest yet (either HVM or
>>PVUSB).
>> 
>> Juergen, are you guys actively doing internal testing of PVUSB?  If so
>> we could probably label that as 'supported' anyway.
>
>Yes, we do.

Alright: as we seem to have consensus, I will add

PV Protocols and Drivers* > default (net, block, console, keyboard, mouse,
USB, framebuffer) : supported


And I am going to backdate this up to 4.5 (and put ? before), as these
seem to have been around forever

Lars

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