> Am 08.05.2017 um 17:40 schrieb Thomas Meyer <tho...@m3y3r.de>:
> 
> 
>> Am 08.05.2017 um 17:35 schrieb Richard Weinberger <rich...@nod.at>:
>> 
>> Thomas,
>> 
>> Am 08.05.2017 um 17:32 schrieb Thomas Meyer:
>>>> We could figure how to report issues to WSL, create self-hosting unit 
>>>> tests and ask them to add/fix
>>>> these features.
>>> 
>>> Turns out there was already a bug report by somebody about missing UML 
>>> support in WSL:
>>> 
>>> https://github.com/Microsoft/BashOnWindows/issues/1692
>> 
>> Ah, there are tons of ptrace() features missing.
>> UML is a major user of ptrace(), worse than GDB. ;-\
> 
> Yes, I know.
> 
> Probably also worh quoting the discussion from the relevant GH issue 
> regarding OLDPTRACE :
> 
> "
> Also, for a little context, the onlysoftware I can find on the planet that 
> cares is User Mode Linux. Unless someone tries to run some statically linked 
> strace or maybe gdb binary from the 2.4 era, this will simply never be hit on 
> WSL in 2017. UML seems to still care, entirely academically, to maintain 
> binary compatibility with 2.4. You can think of it as UML never buying into 
> the idea the value changed, while everyone else moved"
> 

Or asked he other way around:

Is somewhere documented what's the minimum host kernel version that a UML 
kernel will run on?

E.g.:
building a UML kernel from 4.11 will need a host kernel version 2.6.18 with 
features x, y and z enabled?

>> 
>> Thanks,
>> //richard
>> 
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