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| author | Yueyi Li <liyueyi@live.com> | 2018-12-24 07:40:07 +0000 |
|---|---|---|
| committer | Gerrit - the friendly Code Review server <code-review@localhost> | 2019-06-19 00:35:42 -0700 |
| commit | 2f8805ddecde67bac40afd5b7477d002f5645686 (patch) | |
| tree | fd6603d4f948e8f75561aad8873d92899089a3da /fs/btrfs/dev-replace.c | |
| parent | ca64572d5459352034107aa68333b9e539c364e4 (diff) | |
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>
Diffstat (limited to 'fs/btrfs/dev-replace.c')
0 files changed, 0 insertions, 0 deletions