Re: [PATCH v1 2/2] iommu/tegra-smmu: Revert workaround that was needed for Nyan Big Chromebook

Dmitry Osipenko
2021-04-02T14:41:34Z

01.04.2021 11:55, Nicolin Chen пишет:
> On Mon, Mar 29, 2021 at 02:32:56AM +0300, Dmitry Osipenko wrote:
>> The previous commit fixes problem where display client was attaching too
>> early to IOMMU during kernel boot in a multi-platform kernel configuration
>> which enables CONFIG_ARM_DMA_USE_IOMMU=y. The workaround that helped to
>> defer the IOMMU attachment for Nyan Big Chromebook isn't needed anymore,
>> revert it.
>
> Sorry for the late reply. I have been busy with downstream tasks.
>
> I will give them a try by the end of the week. Yet, probably it'd
> be better to include Guillaume also as he has the Nyan platform.
>

Indeed, thanks. Although, I'm pretty sure that it's the same issue which
I reproduced on Nexus 7.

Guillaume, could you please give a test to these patches on Nyan Big?
There should be no EMEM errors in the kernel log with this patches.