Re: [PATCH] powerpc/powernv: Add support for NPU2 relaxed-ordering mode

2018-08-10 Thread Alistair Popple
On Friday, 10 August 2018 5:07:56 PM AEST Michael Ellerman wrote: > Reza Arbab writes: > > From: Alistair Popple > > > > 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

Re: [PATCH] powerpc/powernv: Add support for NPU2 relaxed-ordering mode

2018-08-10 Thread Michael Ellerman
Reza Arbab writes: > From: Alistair Popple > > 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.

[PATCH] powerpc/powernv: Add support for NPU2 relaxed-ordering mode

2018-08-07 Thread Reza Arbab
From: Alistair Popple 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. Signed-off-by: Alistair Popple