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| author | Ard Biesheuvel <ard.biesheuvel@linaro.org> | 2017-08-25 18:50:16 +0300 |
|---|---|---|
| committer | Ingo Molnar <mingo@kernel.org> | 2017-08-26 10:20:33 +0300 |
| commit | c2ceb5fd4e921506e86208b82fca716a2c3aad59 (patch) | |
| tree | 960b9e5412ea59b8326b83939104f1c1ada0cab1 /drivers/firmware/efi/reboot.c | |
| parent | ccc829ba3624beb9a703fc995d016b836d9eead8 (diff) | |
| download | linux-c2ceb5fd4e921506e86208b82fca716a2c3aad59.tar.xz | |
efi/random: Increase size of firmware supplied randomness
The crng code requires at least 64 bytes (2 * CHACHA20_BLOCK_SIZE)
to complete the fast boot-time init, so provide that many bytes
when invoking UEFI protocols to seed the entropy pool. Also, add
a notice so we can tell from the boot log when the seeding actually
took place.
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Cc: Linus Torvalds <torvalds@linux-foundation.org>
Cc: Matt Fleming <matt@codeblueprint.co.uk>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: linux-efi@vger.kernel.org
Link: http://lkml.kernel.org/r/20170825155019.6740-3-ard.biesheuvel@linaro.org
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Diffstat (limited to 'drivers/firmware/efi/reboot.c')
0 files changed, 0 insertions, 0 deletions