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efi: Make rng_seed table handling local to efi.c

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Move the rng_seed table address from struct efi into a static global
variable in efi.c, which is the only place we ever refer to it anyway.
This reduces the footprint of struct efi, which is a r/w data structure
that is shared with the world.

Tested-by: Tony Luck <tony.luck@intel.com> # arch/ia64
Signed-off-by: Ard Biesheuvel <ardb@kernel.org>
This commit is contained in:
Ard Biesheuvel 2020-01-22 14:58:15 +01:00
parent fd506e0cf9
commit 5d288dbd88
2 changed files with 10 additions and 12 deletions
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1
include/linux/efi.h
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@ -540,7 +540,6 @@ extern struct efi {
unsigned long config_table; /* config tables */
unsigned long esrt; /* ESRT table */
unsigned long mem_attr_table; /* memory attributes table */
unsigned long rng_seed; /* UEFI firmware random seed */
unsigned long tpm_log; /* TPM2 Event Log table */
unsigned long tpm_final_log; /* TPM2 Final Events Log table */
unsigned long mem_reserve; /* Linux EFI memreserve table */