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authorArd Biesheuvel <ardb@kernel.org>2022-06-17 10:34:48 +0200
committerArd Biesheuvel <ardb@kernel.org>2022-06-20 12:43:25 +0200
commit3881ee0b1edce0ece72d24b7c74f46b73bd6dcba (patch)
treebef3b1c49d2e0d76cec89fc54c7f8dd8ccb81b59 /drivers/firmware/efi/Kconfig
parentefi: Correct comment on efi_memmap_alloc (diff)
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efi: avoid efivars layer when loading SSDTs from variables
The efivars intermediate variable access layer provides an abstraction that permits the EFI variable store to be replaced by something else that implements a compatible interface, and caches all variables in the variable store for fast access via the efivarfs pseudo-filesystem. The SSDT override feature does not take advantage of either feature, as it is only used when the generic EFI implementation of efivars is used, and it traverses all variables only once to find the ones it is interested in, and frees all data structures that the efivars layer keeps right after. So in this case, let's just call EFI's code directly, using the function pointers in struct efi. Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/Kconfig')
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