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Add note about Intel TME

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raja-grewal 2025-11-18 20:31:46 +11:00 • committed by GitHub
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etc/default/grub.d/40_kernel_hardening.cfg#security-misc-shared
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@ -243,6 +243,7 @@ GRUB_CMDLINE_LINUX="$GRUB_CMDLINE_LINUX erst_disable"
## This is hardware-based encryption managed by the proprietary and closed-source AMD Platform Security Processor (PSP). ## This is hardware-based encryption managed by the proprietary and closed-source AMD Platform Security Processor (PSP).
## Both require a compatible AMD CPU and support for SME to first be enabled in the BIOS/UEFI. ## Both require a compatible AMD CPU and support for SME to first be enabled in the BIOS/UEFI.
## Likely unavailable in consumer-grade AMD CPUs where Transparent SME (TSME) can be enabled in the BIOS/UEFI to achieve SME. ## Likely unavailable in consumer-grade AMD CPUs where Transparent SME (TSME) can be enabled in the BIOS/UEFI to achieve SME.
## Note the corresponding Intel Total Memory Encryption (TME) can also be enabled via the BIOS/UEFI.
## May cause boot failure on certain hardware with incompatible DMA masks. ## May cause boot failure on certain hardware with incompatible DMA masks.
## ##
## https://www.kernel.org/doc/html/next/x86/amd-memory-encryption.html ## https://www.kernel.org/doc/html/next/x86/amd-memory-encryption.html