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| author | Yueyi Li <liyueyi@live.com> | 2018-12-24 07:40:07 +0000 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2019-01-03 18:03:54 +0000 |
| commit | c8a43c18a97845e7f94ed7d181c11f41964976a2 (patch) | |
| tree | 14356b37f98932e6fe44a0befaa184d1734442be /arch/sparc | |
| parent | acafce48b07bf5f9994a38e7fe237193d43d092e (diff) | |
| download | linux-c8a43c18a97845e7f94ed7d181c11f41964976a2.tar.bz2 | |
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.
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>
Diffstat (limited to 'arch/sparc')
0 files changed, 0 insertions, 0 deletions