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commit b12d93e9958e028856cbcb061b6e64728ca07755 upstream. The ASMedia ASM1062 SATA controller advertises Max_Payload_Size_Supported of 512, but in fact it cannot handle incoming TLPs with payload size of 512. We discovered this issue on PCIe controllers capable of MPS = 512 (Aardvark and DesignWare), where the issue presents itself as an External Abort. Bjorn Helgaas says: Probably ASM1062 reports a Malformed TLP error when it receives a data payload of 512 bytes, and Aardvark, DesignWare, etc convert this to an arm64 External Abort. [1] To avoid this problem, limit the ASM1062 Max Payload Size Supported to 256 bytes, so we set the Max Payload Size of devices that may send TLPs to the ASM1062 to 256 or less. [1] https://lore.kernel.org/linux-pci/20210601170907.GA1949035@bjorn-Precision-5520/ BugLink: https://bugzilla.kernel.org/show_bug.cgi?id=212695 Link: https://lore.kernel.org/r/20210624171418.27194-2-kabel@kernel.org Reported-by: Rötti <espressobinboardarmbiantempmailaddress@posteo.de> Signed-off-by: Marek Behún <kabel@kernel.org> Signed-off-by: Bjorn Helgaas <bhelgaas@google.com> Reviewed-by: Krzysztof Wilczyński <kw@linux.com> Reviewed-by: Pali Rohár <pali@kernel.org> Cc: stable@vger.kernel.org Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.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 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.