From: Alistair Popple <alistair@popple.id.au>
To: Michael Ellerman <mpe@ellerman.id.au>
Cc: Reza Arbab <arbab@linux.ibm.com>, linuxppc-dev@lists.ozlabs.org
Subject: Re: [PATCH] powerpc/powernv: Add support for NPU2 relaxed-ordering mode
Date: Fri, 10 Aug 2018 18:07:36 +1000 [thread overview]
Message-ID: <4713418.DQXWlYYjMb@new-mexico> (raw)
In-Reply-To: <87pnyq8zsj.fsf@concordia.ellerman.id.au>
On Friday, 10 August 2018 5:07:56 PM AEST Michael Ellerman wrote:
> Reza Arbab <arbab@linux.ibm.com> writes:
> > From: Alistair Popple <alistair@popple.id.au>
> >
> > Some device drivers support out of order access to GPU memory. This does
> > not affect the CPU view of memory but it does affect the GPU view, so it
> > should only be enabled once the GPU driver has requested it. Add APIs
> > allowing a driver to do so.
>
> Do we have any indication which drivers we are expecting to use this?
I believe there is an internal driver that required these but I'm not sure if
there were any plans to make these available upstream or not.
> I'd prefer not to merge a new API unless we at least have some idea
> what's going to use it.
Fair enough. Unfortunately I am not aware of users future plans for usage of
this API.
- Alistair
> cheers
>
prev parent reply other threads:[~2018-08-10 8:07 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2018-08-08 3:17 [PATCH] powerpc/powernv: Add support for NPU2 relaxed-ordering mode Reza Arbab
2018-08-10 7:07 ` Michael Ellerman
2018-08-10 8:07 ` Alistair Popple [this message]
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