Files
Linux/include/asm-generic/kmap_size.h
T
Thomas Gleixner 6e799cb69a mm/highmem: Provide and use CONFIG_DEBUG_KMAP_LOCAL
CONFIG_KMAP_LOCAL can be enabled by x86/32bit even if CONFIG_HIGHMEM is not
enabled for temporary MMIO space mappings.

Provide it as a seperate config option which depends on CONFIG_KMAP_LOCAL
and let CONFIG_DEBUG_HIGHMEM select it.

This won't increase the debug coverage of this significantly but it paves
the way to do so.

Signed-off-by: Thomas Gleixner <[email protected]>
Acked-by: Peter Zijlstra (Intel) <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
2020-11-24 14:42:08 +01:00

13 lines
263 B
C

/* SPDX-License-Identifier: GPL-2.0 */
#ifndef _ASM_GENERIC_KMAP_SIZE_H
#define _ASM_GENERIC_KMAP_SIZE_H
/* For debug this provides guard pages between the maps */
#ifdef CONFIG_DEBUG_KMAP_LOCAL
# define KM_MAX_IDX 33
#else
# define KM_MAX_IDX 16
#endif
#endif