diff options
| -rw-r--r-- | Documentation/RAS/address-translation.rst | 24 | ||||
| -rw-r--r-- | Documentation/RAS/error-decoding.rst (renamed from Documentation/RAS/ras.rst) | 11 | ||||
| -rw-r--r-- | Documentation/RAS/index.rst | 14 | ||||
| -rw-r--r-- | Documentation/index.rst | 2 | ||||
| -rw-r--r-- | MAINTAINERS | 1 |
5 files changed, 43 insertions, 9 deletions
diff --git a/Documentation/RAS/address-translation.rst b/Documentation/RAS/address-translation.rst new file mode 100644 index 000000000000..f0ca17b43cd3 --- /dev/null +++ b/Documentation/RAS/address-translation.rst @@ -0,0 +1,24 @@ +.. SPDX-License-Identifier: GPL-2.0 + +Address translation +=================== + +x86 AMD +------- + +Zen-based AMD systems include a Data Fabric that manages the layout of +physical memory. Devices attached to the Fabric, like memory controllers, +I/O, etc., may not have a complete view of the system physical memory map. +These devices may provide a "normalized", i.e. device physical, address +when reporting memory errors. Normalized addresses must be translated to +a system physical address for the kernel to action on the memory. + +AMD Address Translation Library (CONFIG_AMD_ATL) provides translation for +this case. + +Glossary of acronyms used in address translation for Zen-based systems + +* CCM = Cache Coherent Moderator +* COD = Cluster-on-Die +* COH_ST = Coherent Station +* DF = Data Fabric diff --git a/Documentation/RAS/ras.rst b/Documentation/RAS/error-decoding.rst index 2556b397cd27..26a72f3fe5de 100644 --- a/Documentation/RAS/ras.rst +++ b/Documentation/RAS/error-decoding.rst @@ -1,15 +1,10 @@ .. SPDX-License-Identifier: GPL-2.0 -Reliability, Availability and Serviceability features -===================================================== - -This documents different aspects of the RAS functionality present in the -kernel. - Error decoding ---------------- +============== -* x86 +x86 +--- Error decoding on AMD systems should be done using the rasdaemon tool: https://github.com/mchehab/rasdaemon/ diff --git a/Documentation/RAS/index.rst b/Documentation/RAS/index.rst new file mode 100644 index 000000000000..2794c1816e90 --- /dev/null +++ b/Documentation/RAS/index.rst @@ -0,0 +1,14 @@ +.. SPDX-License-Identifier: GPL-2.0 + +=========================================================== +Reliability, Availability and Serviceability (RAS) features +=========================================================== + +This documents different aspects of the RAS functionality present in the +kernel. + +.. toctree:: + :maxdepth: 2 + + error-decoding + address-translation diff --git a/Documentation/index.rst b/Documentation/index.rst index 36e61783437c..07f2aa07f0fa 100644 --- a/Documentation/index.rst +++ b/Documentation/index.rst @@ -113,7 +113,7 @@ to ReStructured Text format, or are simply too old. :maxdepth: 1 staging/index - RAS/ras + RAS/index Translations diff --git a/MAINTAINERS b/MAINTAINERS index 25537a37338e..5b945fd5a3b9 100644 --- a/MAINTAINERS +++ b/MAINTAINERS @@ -18359,6 +18359,7 @@ M: Tony Luck <tony.luck@intel.com> M: Borislav Petkov <bp@alien8.de> L: linux-edac@vger.kernel.org S: Maintained +F: Documentation/RAS/ F: Documentation/admin-guide/ras.rst F: drivers/ras/ F: include/linux/ras.h |