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authorThomas Gleixner <tglx@linutronix.de>2020-11-18 22:48:39 +0300
committerThomas Gleixner <tglx@linutronix.de>2020-11-24 16:42:08 +0300
commit6e799cb69a70eedbb41561b750f7180c12cff280 (patch)
treeee6b2c78fb94daef46d0da949e4bad4f2efdd070 /include/asm-generic
parent13c8da5db43ad6d9b8637295ff50ddb66a0af05f (diff)
downloadlinux-6e799cb69a70eedbb41561b750f7180c12cff280.tar.xz
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 <tglx@linutronix.de> Acked-by: Peter Zijlstra (Intel) <peterz@infradead.org> Link: https://lore.kernel.org/r/20201118204006.869487226@linutronix.de
Diffstat (limited to 'include/asm-generic')
-rw-r--r--include/asm-generic/kmap_size.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/include/asm-generic/kmap_size.h b/include/asm-generic/kmap_size.h
index 9d6c7786a645..6e36b2443ece 100644
--- a/include/asm-generic/kmap_size.h
+++ b/include/asm-generic/kmap_size.h
@@ -3,7 +3,7 @@
#define _ASM_GENERIC_KMAP_SIZE_H
/* For debug this provides guard pages between the maps */
-#ifdef CONFIG_DEBUG_HIGHMEM
+#ifdef CONFIG_DEBUG_KMAP_LOCAL
# define KM_MAX_IDX 33
#else
# define KM_MAX_IDX 16