arm64: kexec_file: add kaslr support

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Adding "kaslr-seed" to dtb enables triggering kaslr, or kernel virtual
address randomization, at secondary kernel boot. We always do this as
it will have no harm on kaslr-incapable kernel.

We don't have any "switch" to turn off this feature directly, but still
can suppress it by passing "nokaslr" as a kernel boot argument.

Signed-off-by: AKASHI Takahiro <takahiro.akashi@linaro.org>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Will Deacon <will.deacon@arm.com>
[will: Use rng_is_initialized()]
Signed-off-by: Will Deacon <will.deacon@arm.com>

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AKASHI Takahiro 2018-11-15 14:52:55 +09:00 • committed by Will Deacon

parent 732b7b93d8

commit 884143f60c

1 changed files with 18 additions and 1 deletions

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arch/arm64/kernel/machine_kexec_file.c

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