From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>
Cc: Will Deacon <will@kernel.org>,
Robin Murphy <robin.murphy@arm.com>,
Nicolin Chen <nicolinc@nvidia.com>,
Krishna Reddy <vdumpa@nvidia.com>,
devicetree@vger.kernel.org, iommu@lists.linux-foundation.org,
linux-tegra@vger.kernel.org
Subject: Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions
Date: Wed, 28 Apr 2021 08:51:01 +0300 [thread overview]
Message-ID: <b6d323e1-2e90-b031-60a0-3460644ea7a0@gmail.com> (raw)
In-Reply-To: <20210423163234.3651547-1-thierry.reding@gmail.com>
23.04.2021 19:32, Thierry Reding пишет:
> Note that there will be no new releases of the bootloader for earlier
> devices, so adding support for these new DT bindings will not be
> practical. The bootloaders on those devices do pass information about
> the active framebuffer via the kernel command-line, so we may want to
> add code to create reserved regions in the IOMMU based on that.
Since this change requires a bootloader update anyways, why it's not
possible to fix the bootloader properly, making it to stop all the DMA
activity before jumping into kernel?
WARNING: multiple messages have this Message-ID (diff)
From: Dmitry Osipenko <digetx@gmail.com>
To: Thierry Reding <thierry.reding@gmail.com>,
Joerg Roedel <joro@8bytes.org>, Rob Herring <robh+dt@kernel.org>
Cc: devicetree@vger.kernel.org, Will Deacon <will@kernel.org>,
iommu@lists.linux-foundation.org,
Nicolin Chen <nicolinc@nvidia.com>,
linux-tegra@vger.kernel.org, Robin Murphy <robin.murphy@arm.com>
Subject: Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions
Date: Wed, 28 Apr 2021 08:51:01 +0300 [thread overview]
Message-ID: <b6d323e1-2e90-b031-60a0-3460644ea7a0@gmail.com> (raw)
In-Reply-To: <20210423163234.3651547-1-thierry.reding@gmail.com>
23.04.2021 19:32, Thierry Reding пишет:
> Note that there will be no new releases of the bootloader for earlier
> devices, so adding support for these new DT bindings will not be
> practical. The bootloaders on those devices do pass information about
> the active framebuffer via the kernel command-line, so we may want to
> add code to create reserved regions in the IOMMU based on that.
Since this change requires a bootloader update anyways, why it's not
possible to fix the bootloader properly, making it to stop all the DMA
activity before jumping into kernel?
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iommu mailing list
iommu@lists.linux-foundation.org
https://lists.linuxfoundation.org/mailman/listinfo/iommu
next prev parent reply other threads:[~2021-04-28 5:51 UTC|newest]
Thread overview: 91+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-04-23 16:32 [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions Thierry Reding
2021-04-23 16:32 ` Thierry Reding
2021-04-23 16:32 ` [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier Thierry Reding
2021-04-23 16:32 ` Thierry Reding
2021-05-20 22:03 ` Rob Herring
2021-05-20 22:03 ` Rob Herring
2021-05-28 16:54 ` Thierry Reding
2021-05-28 16:54 ` Thierry Reding
2021-06-08 16:51 ` Thierry Reding
2021-06-08 16:51 ` Thierry Reding
2021-07-01 18:14 ` Thierry Reding
2021-07-01 18:14 ` Thierry Reding
2021-07-02 14:16 ` Dmitry Osipenko
2021-07-02 14:16 ` Dmitry Osipenko
2021-09-01 14:13 ` Thierry Reding
2021-09-01 14:13 ` Thierry Reding
2021-09-03 13:20 ` Rob Herring
2021-09-03 13:20 ` Rob Herring
2021-09-03 13:20 ` Rob Herring
2021-09-03 13:52 ` Thierry Reding
2021-09-03 13:52 ` Thierry Reding
2021-09-03 14:36 ` Rob Herring
2021-09-03 14:36 ` Rob Herring
2021-09-03 14:36 ` Rob Herring
2021-09-03 15:35 ` Thierry Reding
2021-09-03 15:35 ` Thierry Reding
2021-09-07 15:33 ` Rob Herring
2021-09-07 15:33 ` Rob Herring
2021-09-07 15:33 ` Rob Herring
2021-09-07 17:44 ` Thierry Reding
2021-09-07 17:44 ` Thierry Reding
2021-09-15 15:19 ` Thierry Reding
2021-09-15 15:19 ` Thierry Reding
2022-02-06 22:27 ` Janne Grunau
2022-02-06 22:27 ` Janne Grunau
2022-02-06 22:27 ` Janne Grunau
2022-02-09 16:31 ` Thierry Reding
2022-02-09 16:31 ` Thierry Reding
2022-02-09 16:31 ` Thierry Reding
2022-02-10 23:15 ` Janne Grunau
2022-02-10 23:15 ` Janne Grunau
2022-02-10 23:15 ` Janne Grunau
2022-03-31 16:25 ` Thierry Reding
2022-03-31 16:25 ` Thierry Reding
2022-03-31 16:25 ` Thierry Reding
2022-04-01 17:08 ` Janne Grunau
2022-04-01 17:08 ` Janne Grunau
2022-04-01 17:08 ` Janne Grunau
2021-04-23 16:32 ` [PATCH v2 2/5] iommu: Implement of_iommu_get_resv_regions() Thierry Reding
2021-04-23 16:32 ` Thierry Reding
2021-04-24 1:59 ` kernel test robot
2021-07-02 14:05 ` Dmitry Osipenko
2021-07-02 14:05 ` Dmitry Osipenko
2021-07-16 14:41 ` Rob Herring
2021-07-16 14:41 ` Rob Herring
2021-07-17 11:07 ` Dmitry Osipenko
2021-07-17 11:07 ` Dmitry Osipenko
2021-07-30 12:18 ` Will Deacon
2021-07-30 12:18 ` Will Deacon
2021-04-23 16:32 ` [PATCH v2 3/5] iommu: dma: Use of_iommu_get_resv_regions() Thierry Reding
2021-04-23 16:32 ` Thierry Reding
2021-04-23 16:32 ` [PATCH v2 4/5] iommu/tegra-smmu: Add support for reserved regions Thierry Reding
2021-04-23 16:32 ` Thierry Reding
2021-04-23 16:32 ` [PATCH v2 5/5] iommu/tegra-smmu: Support managed domains Thierry Reding
2021-04-23 16:32 ` Thierry Reding
2021-10-11 23:25 ` Dmitry Osipenko
2021-10-11 23:25 ` Dmitry Osipenko
2021-04-24 7:26 ` [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions Dmitry Osipenko
2021-04-24 7:26 ` Dmitry Osipenko
2021-04-27 18:30 ` Krishna Reddy
2021-04-27 18:30 ` Krishna Reddy
2021-04-28 5:44 ` Dmitry Osipenko
2021-04-28 5:44 ` Dmitry Osipenko
2021-04-29 5:51 ` Krishna Reddy
2021-04-29 5:51 ` Krishna Reddy
2021-04-29 12:43 ` Dmitry Osipenko
2021-04-29 12:43 ` Dmitry Osipenko
2021-04-28 5:51 ` Dmitry Osipenko [this message]
2021-04-28 5:51 ` Dmitry Osipenko
2021-04-28 5:57 ` Mikko Perttunen
2021-04-28 5:57 ` Mikko Perttunen
2021-04-28 7:55 ` Dmitry Osipenko
2021-04-28 7:55 ` Dmitry Osipenko
2021-04-28 5:59 ` Dmitry Osipenko
2021-04-28 5:59 ` Dmitry Osipenko
2021-10-03 1:09 ` Dmitry Osipenko
2021-10-03 1:09 ` Dmitry Osipenko
2021-10-04 19:23 ` Thierry Reding
2021-10-04 19:23 ` Thierry Reding
2021-10-04 20:32 ` Dmitry Osipenko
2021-10-04 20:32 ` Dmitry Osipenko
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