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-rw-r--r--arch/arm/mm/highmem.c11
1 files changed, 10 insertions, 1 deletions
diff --git a/arch/arm/mm/highmem.c b/arch/arm/mm/highmem.c
index 77b030f5ec09..086816b205b8 100644
--- a/arch/arm/mm/highmem.c
+++ b/arch/arm/mm/highmem.c
@@ -48,7 +48,16 @@ void *kmap_atomic(struct page *page, enum km_type type)
debug_kmap_atomic(type);
- kmap = kmap_high_get(page);
+#ifdef CONFIG_DEBUG_HIGHMEM
+ /*
+ * There is no cache coherency issue when non VIVT, so force the
+ * dedicated kmap usage for better debugging purposes in that case.
+ */
+ if (!cache_is_vivt())
+ kmap = NULL;
+ else
+#endif
+ kmap = kmap_high_get(page);
if (kmap)
return kmap;