Messages in this thread | | | Date | Wed, 8 Jan 2020 09:16:42 +0000 | From | Will Deacon <> | Subject | Re: [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb |
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On Thu, Dec 26, 2019 at 02:17:06PM -0800, Bjorn Andersson wrote: > These patches implements the stream mapping inheritance that's necessary in > order to not hit a security violation as the display hardware looses its stream > mapping during initialization of arm-smmu in various Qualcomm platforms. > > This was previously posted as an RFC [1], changes since then involves the > rebase and migration of the read-back code to the Qualcomm specific > implementation, the mapping is maintained indefinitely - to handle probe > deferring clients - and rewritten commit messages.
I don't think we should solve this in a Qualcomm-specific manner. Please can you take a look at the proposal from Thierry [1] and see whether or not it works for you?
Thanks,
Will
[1] https://lore.kernel.org/lkml/20191209150748.2471814-1-thierry.reding@gmail.com
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