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| author | Thomas Gleixner <tglx@linutronix.de> | 2020-11-18 22:48:40 +0300 |
|---|---|---|
| committer | Thomas Gleixner <tglx@linutronix.de> | 2020-11-24 16:42:08 +0300 |
| commit | 0e91a0c6984c837a7c6760e3f28e8e1c532abf87 (patch) | |
| tree | ca90a3abad7717fa27186c38c2ed0c02f93ab7de /arch/x86/include/asm/fixmap.h | |
| parent | 6e799cb69a70eedbb41561b750f7180c12cff280 (diff) | |
| download | linux-0e91a0c6984c837a7c6760e3f28e8e1c532abf87.tar.xz | |
mm/highmem: Provide CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP
CONFIG_DEBUG_KMAP_LOCAL, which is selected by CONFIG_DEBUG_HIGHMEM is only
providing guard pages, but does not provide a mechanism to enforce the
usage of the kmap_local() infrastructure.
Provide CONFIG_DEBUG_KMAP_LOCAL_FORCE_MAP which forces the temporary
mapping even for lowmem pages. This needs to be a seperate config switch
because this only works on architectures which do not have cache aliasing
problems.
Suggested-by: Linus Torvalds <torvalds@linux-foundation.org>
Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Link: https://lore.kernel.org/r/20201118204007.028261233@linutronix.de
Diffstat (limited to 'arch/x86/include/asm/fixmap.h')
0 files changed, 0 insertions, 0 deletions