android_kernel_oneplus_msm8998/arch/arm64
Yueyi Li d598338175 arm64: kaslr: Reserve size of ARM64_MEMSTART_ALIGN in linear region
When KASLR is enabled (CONFIG_RANDOMIZE_BASE=y), the top 4K of kernel
virtual address space may be mapped to physical addresses despite being
reserved for ERR_PTR values.

Fix the randomization of the linear region so that we avoid mapping the
last page of the virtual address space.

Change-Id: I3035dbe8e64b2a31f5d56b7dc29366958adda6ce
Cc: Ard Biesheuvel <ard.biesheuvel@linaro.org>
Signed-off-by: liyueyi <liyueyi@live.com>
[will: rewrote commit message; merged in suggestion from Ard]
Signed-off-by: Will Deacon <will.deacon@arm.com>
Git-commit: c8a43c18a97845e7f94ed7d181c11f41964976a2
Git-repo: git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
Signed-off-by: Vinayak Menon <vinmenon@codeaurora.org>
2019-08-30 09:21:10 +02:00
..
boot
configs
crypto
include
kernel
kvm
lib
mm arm64: kaslr: Reserve size of ARM64_MEMSTART_ALIGN in linear region 2019-08-30 09:21:10 +02:00
net
xen
Kconfig
Kconfig.debug
Kconfig.platforms
Makefile