[PATCH v3 1/3] powerpc/pseries: Update SCM hcall op-codes in hvcall.h

[Michael Ellerman]

"Oliver O'Halloran" <oohall at gmail.com> writes:
> On Fri, Jun 28, 2019 at 1:39 PM Michael Ellerman <mpe at ellerman.id.au> wrote:
>>
>> Vaibhav Jain <vaibhav at linux.ibm.com> writes:
>> > *snip*
>>
>> How can we be changing the meaning of HCALL numbers without breaking all
>> existing usages?
>
> The changed one being changed here were never used by linux or
> implemented by either hypervisor.

OK. Please say so in the change log so that it's clear it's not a
behaviour change.

>> Where are these hypervisor calls documented?
>
> In an internal spec from one the phyp guys. I have been complaining
> about it not being open (or merged into PAPR at the very least), but
> it doesn't look like there's been any movement there.

Please send a patch for Documentation/powerpc/ describing the API for
the hypercalls we're using.

cheers