Introducing a chosen node, rng-seed, which is an entropy that can be passed to kernel called very early to increase initial device randomness. This can be used for adding sufficient initial entropy for stack canary. Especially architectures that lack per-stack canary.
Hsin-Yi Wang (3): arm64: map FDT as RW for early_init_dt_scan() fdt: add support for rng-seed arm64: kexec_file: add rng-seed support arch/arm64/include/asm/mmu.h | 2 +- arch/arm64/kernel/kaslr.c | 5 +---- arch/arm64/kernel/machine_kexec_file.c | 18 +++++++++++++++++- arch/arm64/kernel/setup.c | 9 ++++++++- arch/arm64/mm/mmu.c | 15 +-------------- drivers/of/fdt.c | 10 ++++++++++ 6 files changed, 38 insertions(+), 21 deletions(-) -- 2.20.1
