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734554fdfc
The disable_bypass parameter has been mostly meaningless for a long time since the introduction of default domains. Its original intent is now fulfilled by the controls users have over the default domain type, and its remaining effect in the brief window between Stream Table initialisation and default domain creation hardly seems worth the complication. Furthermore, thanks to 2-level Stream Tables, disabling disable_bypass (there's another reason not to like it right there) has never guaranteed that any particular StreamID *will* bypass anyway - any device which might actually care about that wants RMRs - so there's not really much lost by taking away that option (which has already been non-default for nearing 6 years now). As part of this, also remove the weird behaviour where we "successfully" probe and register a non-functional SMMU if the DT "#iommu-cells" property is wrong. I have no memory of what possessed me to think that was a good idea at the time, and by now I suspect it's likely to break things worse than simply failing probe would. Signed-off-by: Robin Murphy <robin.murphy@arm.com> Reviewed-by: Mostafa Saleh <smostafa@google.com> Link: https://lore.kernel.org/r/ea3ac4cd595a81b5511729601b2f7d4668178438.1712335927.git.robin.murphy@arm.com Signed-off-by: Will Deacon <will@kernel.org> |
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Linux kernel
============
There are several guides for kernel developers and users. These guides can
be rendered in a number of formats, like HTML and PDF. Please read
Documentation/admin-guide/README.rst first.
In order to build the documentation, use ``make htmldocs`` or
``make pdfdocs``. The formatted documentation can also be read online at:
https://www.kernel.org/doc/html/latest/
There are various text files in the Documentation/ subdirectory,
several of them using the reStructuredText markup notation.
Please read the Documentation/process/changes.rst file, as it contains the
requirements for building and running the kernel, and information about
the problems which may result by upgrading your kernel.