[PATCH 00/11] powerpv/powernv: Restore pnv_npu_try_dma_set_bypass()

[Reza Arbab]

On Wed, Oct 30, 2019 at 07:13:59PM +0100, Christoph Hellwig wrote:
>On Wed, Oct 30, 2019 at 01:08:51PM -0500, Reza Arbab wrote:
>> On Wed, Oct 30, 2019 at 06:53:41PM +0100, Christoph Hellwig wrote:
>>> How do you even use this code?  Nothing in the kernel even calls
>>> dma_set_mask for NPU devices, as we only suport vfio pass through.
>>
>> You use it by calling dma_set_mask() for the *GPU* device. The purpose of
>> pnv_npu_try_dma_set_bypass() is to then propagate the same bypass
>> configuration to all the NPU devices associated with that GPU.
>
>Which in-kernel driver, which PCI ID?

Aha, it's this again. Didn't catch your meaning at first. Point taken.

-- 
Reza Arbab