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76e67e9e0f
The Amazon's Annapurna Labs root ports don't advertise an ACS capability, but they don't allow peer-to-peer transactions and do validate bus numbers through the SMMU. Additionally, it's not possible for one RP to pass traffic to another RP. Signed-off-by: Ali Saidi <alisaidi@amazon.com> Signed-off-by: Jonathan Chocron <jonnyc@amazon.com> Signed-off-by: Lorenzo Pieralisi <lorenzo.pieralisi@arm.com> Reviewed-by: Gustavo Pimentel <gustavo.pimentel@synopsys.com> Reviewed-by: Andrew Murray <andrew.murray@arm.com> Acked-by: Bjorn Helgaas <bhelgaas@google.com>
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 Restructured Text 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.