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authorYazen Ghannam <yazen.ghannam@amd.com>2023-05-15 11:35:33 +0000
committerBorislav Petkov (AMD) <bp@alien8.de>2023-06-05 12:26:37 +0200
commite15885689cf4bc92356e52ea6ef38379a749819a (patch)
tree266e48db53b62bec1234e22e6dbe940db7f9bc2e /ipc/msg.c
parent2a1d18a5dc5056825b8e9527d188130da6256efc (diff)
x86/amd_nb: Add MI200 PCI IDs
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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