iommu/arm-smmu-v3: Document nesting-related errata

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commit 0bfbfc526c upstream

Both MMU-600 and MMU-700 have similar errata around TLB invalidation
while both stages of translation are active, which will need some
consideration once nesting support is implemented. For now, though,
it's very easy to make our implicit lack of nesting support explicit
for those cases, so they're less likely to be missed in future.

Signed-off-by: Robin Murphy <robin.murphy@arm.com>
Reviewed-by: Nicolin Chen <nicolinc@nvidia.com>
Link: https://lore.kernel.org/r/696da78d32bb4491f898f11b0bb4d850a8aa7c6a.1683731256.git.robin.murphy@arm.com
Signed-off-by: Will Deacon <will@kernel.org>
Signed-off-by: Easwar Hariharan <eahariha@linux.microsoft.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

...

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Robin Murphy 2023-08-02 17:26:20 +00:00 • committed by Greg Kroah-Hartman

parent c7af8840f2

commit 5ed4b021a3

2 changed files with 7 additions and 2 deletions

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4

Documentation/arm64/silicon-errata.rst

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5

drivers/iommu/arm/arm-smmu-v3/arm-smmu-v3.c

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