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The Linux kernel configuration item CONFIG_EFI_SECRET
:
CONFIG_EFI && CONFIG_X86_64
efi_secret
This is a driver for accessing the EFI secret area via securityfs. The EFI secret area is a memory area designated by the firmware for confidential computing secret injection (for example for AMD SEV guests). The driver exposes the secrets as files in <securityfs>/secrets/coco. Files can be read and deleted (deleting a file wipes the secret from memory).
To compile this driver as a module, choose M here. The module will be called efi_secret.
Raw data from LKDDb:
lkddb module efi_secret CONFIG_EFI_SECRET : drivers/virt/coco/efi_secret/Kconfig : "EFI secret area securityfs support" # in 5.19, 6.0–6.11, 6.12-rc+HEAD
lkddb platform "efi_secret" : CONFIG_EFI_SECRET CONFIG_VIRT_DRIVERS : drivers/virt/coco/efi_secret/efi_secret.c # in 5.19, 6.0–6.11, 6.12-rc+HEAD
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Automatically generated (in year 2024). See also LKDDb sources on GitLab