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e15885689c
The AMD MI200 series accelerators are data center GPUs. They include unified memory controllers and a data fabric similar to those used in AMD x86 CPU products. The memory controllers report errors using MCA, though these errors are generally handled through GPU drivers that directly manage the accelerator device. In some configurations, memory errors from these devices will be reported through MCA and managed by x86 CPUs. The OS is expected to handle these errors in similar fashion to MCA errors originating from memory controllers on the CPUs. In Linux, this flow includes passing MCA errors to a notifier chain with handlers in the EDAC subsystem. The AMD64 EDAC module requires information from the memory controllers and data fabric in order to provide detailed decoding of memory errors. The information is read from hardware registers accessed through interfaces in the data fabric. The accelerator data fabrics are visible to the host x86 CPUs as PCI devices just like x86 CPU data fabrics are already. However, the accelerator fabrics have new and unique PCI IDs. Add PCI IDs for the MI200 series of accelerator devices in order to enable EDAC support. The data fabrics of the accelerator devices will be enumerated as any other fabric already supported. System-specific implementation details will be handled within the AMD64 EDAC module. [ bp: Scrub off marketing speak. ] Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com> Co-developed-by: Muralidhara M K <muralidhara.mk@amd.com> Signed-off-by: Muralidhara M K <muralidhara.mk@amd.com> Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de> Link: https://lore.kernel.org/r/20230515113537.1052146-2-muralimk@amd.com |
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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.