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| author |   Mike Rapoport <rppt@linux.ibm.com> | 2022-09-21 10:48:41 +0300 |
|---|---|---|
| committer |   Catalin Marinas <catalin.marinas@arm.com> | 2022-09-29 17:59:28 +0100 |
| commit | b9dd04a20f81333e4b99662f1bbaf7c9e3a1e137 (patch) | |
| tree | ea68c3c97d9a48dedd5e4858e156f7d195ec2202 /arch/arm64/kernel/reloc_test_core.c | |
| parent | arm64: uaccess: simplify uaccess_mask_ptr() (diff) | |
| download | linux-dev-b9dd04a20f81333e4b99662f1bbaf7c9e3a1e137.tar.xz linux-dev-b9dd04a20f81333e4b99662f1bbaf7c9e3a1e137.zip | |
arm64/mm: fold check for KFENCE into can_set_direct_map()
KFENCE requires linear map to be mapped at page granularity, so that it
is possible to protect/unprotect single pages, just like with
rodata_full and DEBUG_PAGEALLOC.
Instead of repating
can_set_direct_map() || IS_ENABLED(CONFIG_KFENCE)
make can_set_direct_map() handle the KFENCE case.
This also prevents potential false positives in kernel_page_present()
that may return true for non-present page if CONFIG_KFENCE is enabled.
Signed-off-by: Mike Rapoport <rppt@linux.ibm.com>
Reviewed-by: Anshuman Khandual <anshuman.khandual@arm.com>
Link: https://lore.kernel.org/r/20220921074841.382615-1-rppt@kernel.org
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to '')
0 files changed, 0 insertions, 0 deletions