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arm64: add support for building vmlinux as a relocatable PIE binary

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This implements CONFIG_RELOCATABLE, which links the final vmlinux
image with a dynamic relocation section, allowing the early boot code
to perform a relocation to a different virtual address at runtime.

This is a prerequisite for KASLR (CONFIG_RANDOMIZE_BASE).

Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
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Ard Biesheuvel 2016-01-26 09:13:44 +01:00 • committed by Catalin Marinas
commit 1e48ef7fcc
5 changed files with 65 additions and 0 deletions
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