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From: "Aneesh Kumar K.V" <aneesh.kumar@linux.vnet.ibm.com>
To: Michael Ellerman <mpe@ellerman.id.au>, linuxppc-dev@ozlabs.org
Cc: dja@axtens.net
Subject: Re: [PATCH] powerpc/powernv: Remove powernv RTAS support
Date: Fri, 27 Mar 2015 18:24:08 +0530	[thread overview]
Message-ID: <87k2y24n4f.fsf@linux.vnet.ibm.com> (raw)
In-Reply-To: <1426141631-10741-1-git-send-email-mpe@ellerman.id.au>

Michael Ellerman <mpe@ellerman.id.au> writes:

> The powernv code has some conditional support for running on bare metal
> machines that have no OPAL firmware, but provide RTAS.
>
> No released machines ever supported that, and even in the lab it was
> just a transitional hack in the days when OPAL was still being
> developed.
>
> So remove the code.

So when we select CONFIG_PPC_PSERIES, we end up selecting
CONFIG_PPC_RTAS. What is the expected behaviour there for powernv ? Can
we use RTAS call from powernv code if rtas node is present in device
tree ? Or do we want to make sure powernv always use OPAL call ?

For example, right now we will use rtas_node get-term-char and
put-term-char even with this patch applied.

-aneesh

  parent reply	other threads:[~2015-03-27 12:54 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2015-03-12  6:27 [PATCH] powerpc/powernv: Remove powernv RTAS support Michael Ellerman
2015-03-25  5:25 ` Benjamin Herrenschmidt
2015-03-25  5:46 ` Stewart Smith
2015-03-25  9:42   ` Michael Ellerman
2015-04-07  5:36     ` Stewart Smith
2015-03-27 12:54 ` Aneesh Kumar K.V [this message]
2015-03-28 10:57   ` Michael Ellerman

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