Messages in this thread | | | Subject | Re: [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb | From | Robin Murphy <> | Date | Mon, 24 May 2021 13:48:25 +0100 |
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On 2021-05-24 13:03, Lee Jones wrote: > On Wed, 8 Jan 2020 at 09:16, Will Deacon <will@kernel.org> wrote: > >> 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? >> > > Did this or Thierry's solution ever gain traction? > > Or are all the parties still 'solving' this downstream?
I think this particular series is what eventually ended up upstream as 07a7f2caaa5a and f9081b8ff593 (plus a couple of tweaks later). Progress is slow on the more general solution, but still happening - I see there was a new version recently which I've not had time to properly look at yet.
Robin.
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