linux/arch/arm64
Ard Biesheuvel 2b5fe07a78 arm64: efi: invoke EFI_RNG_PROTOCOL to supply KASLR randomness
Since arm64 does not use a decompressor that supplies an execution
environment where it is feasible to some extent to provide a source of
randomness, the arm64 KASLR kernel depends on the bootloader to supply
some random bits in the /chosen/kaslr-seed DT property upon kernel entry.

On UEFI systems, we can use the EFI_RNG_PROTOCOL, if supplied, to obtain
some random bits. At the same time, use it to randomize the offset of the
kernel Image in physical memory.

Reviewed-by: Matt Fleming <matt@codeblueprint.co.uk>
Signed-off-by: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
2016-02-24 14:57:29 +00:00
..
boot ARM: SoC fixes for v4.5-rc 2016-02-07 15:23:20 -08:00
configs arm64: defconfig: updates for 4.5 2016-01-26 11:24:41 +00:00
crypto arm64: crypto: reduce priority of core AES cipher 2015-11-18 12:09:08 +00:00
include arm64: add support for kernel ASLR 2016-02-24 14:57:27 +00:00
kernel arm64: kaslr: randomize the linear region 2016-02-24 14:57:27 +00:00
kvm arm64: kvm: deal with kernel symbols outside of linear mapping 2016-02-18 18:16:40 +00:00
lib arm64: kernel: Don't toggle PAN on systems with UAO 2016-02-18 17:27:05 +00:00
mm arm64: kaslr: randomize the linear region 2016-02-24 14:57:27 +00:00
net arm64: bpf: add extra pass to handle faulty codegen 2016-01-17 19:15:26 -05:00
xen xen/arm: introduce HYPERVISOR_platform_op on arm and arm64 2015-12-21 14:40:56 +00:00
Kconfig arm64: efi: invoke EFI_RNG_PROTOCOL to supply KASLR randomness 2016-02-24 14:57:29 +00:00
Kconfig.debug arch: consolidate CONFIG_STRICT_DEVM in lib/Kconfig.debug 2016-01-09 06:30:49 -08:00
Kconfig.platforms ARM: SoC support for Tegra platforms for v4.5 2016-01-22 17:30:52 -08:00
Makefile arm64: add support for building vmlinux as a relocatable PIE binary 2016-02-24 14:57:27 +00:00