From: Lee Jones <lee.jones@linaro.org>
To: Will Deacon <will@kernel.org>
Cc: Patrick Daly <pdaly@codeaurora.org>,
linux-arm-msm <linux-arm-msm@vger.kernel.org>,
open list <linux-kernel@vger.kernel.org>,
iommu@lists.linux-foundation.org,
Thierry Reding <treding@nvidia.com>,
Robin Murphy <robin.murphy@arm.com>,
linux-arm-kernel <linux-arm-kernel@lists.infradead.org>,
Pratik Patel <pratikp@codeaurora.org>
Subject: Re: [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb
Date: Mon, 24 May 2021 13:03:39 +0100 [thread overview]
Message-ID: <CAF2Aj3iKk2LSA5XC76pNiLV8a76BkibUitof-dix8rqkc0qiow@mail.gmail.com> (raw)
In-Reply-To: <20200108091641.GA15147@willie-the-truck>
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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?
> Thanks,
>
> Will
>
> [1]
> https://lore.kernel.org/lkml/20191209150748.2471814-1-thierry.reding@gmail.com
>
--
Lee Jones [李琼斯]
Linaro Services Senior Technical Lead
Linaro.org │ Open source software for ARM SoCs
Follow Linaro: Facebook | Twitter | Blog
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next prev parent reply other threads:[~2021-05-24 12:03 UTC|newest]
Thread overview: 22+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-12-26 22:17 [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2019-12-26 22:17 ` [PATCH 1/3] iommu/arm-smmu: Don't blindly use first SMR to calculate mask Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2019-12-26 22:17 ` [PATCH 2/3] iommu/arm-smmu: Expose s2cr and smr structs to impl Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2019-12-26 22:17 ` [PATCH 3/3] iommu/arm-smmu: Allow inherting stream mapping from bootloader Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2019-12-26 22:17 ` Bjorn Andersson
2020-01-08 9:16 ` [PATCH 0/3] iommu/arm-smmu: Qualcomm bootsplash/efifb Will Deacon
2020-01-08 9:16 ` Will Deacon
2020-01-08 9:16 ` Will Deacon
2021-05-24 12:03 ` Lee Jones [this message]
2021-05-24 12:48 ` Robin Murphy
2021-05-24 12:48 ` Robin Murphy
2021-05-24 12:48 ` Robin Murphy
2021-05-25 3:28 ` Bjorn Andersson
2021-05-25 3:28 ` Bjorn Andersson
2021-05-25 3:28 ` Bjorn Andersson
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