x86/mce: Define amd_mce_usable_address()

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Currently, all valid MCA_ADDR values are assumed to be usable on AMD
systems. However, this is not correct in most cases. Notifiers expecting
usable addresses may then operate on inappropriate values.

Define a helper function to do AMD-specific checks for a usable memory
address. List out all known cases.

  [ bp: Tone down the capitalized words. ]

Signed-off-by: Yazen Ghannam <yazen.ghannam@amd.com>
Signed-off-by: Borislav Petkov (AMD) <bp@alien8.de>
Link: https://lore.kernel.org/r/20230613141142.36801-3-yazen.ghannam@amd.com

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Yazen Ghannam 2023-06-13 09:11:41 -05:00 • committed by Borislav Petkov (AMD)

parent 495a91d099

commit 48da1ad8ba

3 changed files with 43 additions and 0 deletions

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38

arch/x86/kernel/cpu/mce/amd.c

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3

arch/x86/kernel/cpu/mce/core.c

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2

arch/x86/kernel/cpu/mce/internal.h

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