RE: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions

[PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Thierry Reding <hidden> · 2021-04-23
[PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-04-23
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Rob Herring <robh@kernel.org> · 2021-05-20
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-05-28
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-06-08
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-07-01
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Dmitry Osipenko <digetx@gmail.com> · 2021-07-02
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-09-01
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Rob Herring <robh@kernel.org> · 2021-09-03
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-09-03
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Rob Herring <robh@kernel.org> · 2021-09-03
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-09-03
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Rob Herring <robh@kernel.org> · 2021-09-07
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-09-07
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2021-09-15
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Janne Grunau <j@jannau.net> · 2022-02-06
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2022-02-09
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Janne Grunau <j@jannau.net> · 2022-02-10
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Thierry Reding <hidden> · 2022-03-31
Re: [PATCH v2 1/5] dt-bindings: reserved-memory: Document memory region specifier · Janne Grunau <j@jannau.net> · 2022-04-01
[PATCH v2 2/5] iommu: Implement of_iommu_get_resv_regions() · Thierry Reding <hidden> · 2021-04-23
Re: [PATCH v2 2/5] iommu: Implement of_iommu_get_resv_regions() · Dmitry Osipenko <digetx@gmail.com> · 2021-07-02
Re: [PATCH v2 2/5] iommu: Implement of_iommu_get_resv_regions() · Rob Herring <robh+dt@kernel.org> · 2021-07-16
Re: [PATCH v2 2/5] iommu: Implement of_iommu_get_resv_regions() · Dmitry Osipenko <digetx@gmail.com> · 2021-07-17
Re: [PATCH v2 2/5] iommu: Implement of_iommu_get_resv_regions() · Will Deacon <will@kernel.org> · 2021-07-30
[PATCH v2 3/5] iommu: dma: Use of_iommu_get_resv_regions() · Thierry Reding <hidden> · 2021-04-23
[PATCH v2 4/5] iommu/tegra-smmu: Add support for reserved regions · Thierry Reding <hidden> · 2021-04-23
[PATCH v2 5/5] iommu/tegra-smmu: Support managed domains · Thierry Reding <hidden> · 2021-04-23
Re: [PATCH v2 5/5] iommu/tegra-smmu: Support managed domains · Dmitry Osipenko <digetx@gmail.com> · 2021-10-11
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-04-24
RE: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Krishna Reddy <vdumpa@nvidia.com> · 2021-04-27
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-04-28
RE: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Krishna Reddy <vdumpa@nvidia.com> · 2021-04-29
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-04-29
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-04-28
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Mikko Perttunen <hidden> · 2021-04-28
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-04-28
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-04-28
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-10-03
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Thierry Reding <hidden> · 2021-10-04
Re: [PATCH v2 0/5] iommu: Support identity mappings of reserved-memory regions · Dmitry Osipenko <digetx@gmail.com> · 2021-10-04

From: Krishna Reddy <vdumpa@nvidia.com>
Date: 2021-04-27 18:30:45
Also in: linux-iommu, linux-tegra

Is it always safe to enable SMMU ASID in a middle of a DMA request made by a
memory client?

From MC point of view, It is safe to enable and has been this way from many years in downstream code for display engine.
It doesn't impact the transactions that have already bypassed SMMU before enabling SMMU ASID. 
Transactions that are yet to pass SMMU stage would go through SMMU once SMMU ASID is enabled and visible.

-KR

`h`	back out one level
`j`	next message in thread
`k`	previous message in thread
`l`	drill in
`Esc`	close help / fold thread tree
`?`	toggle this help