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-rw-r--r--arch/powerpc/Kconfig1
-rw-r--r--arch/powerpc/include/asm/thread_info.h10
2 files changed, 8 insertions, 3 deletions
diff --git a/arch/powerpc/Kconfig b/arch/powerpc/Kconfig
index 54dbbb1d4b36..b1760d615bb7 100644
--- a/arch/powerpc/Kconfig
+++ b/arch/powerpc/Kconfig
@@ -790,7 +790,6 @@ config THREAD_SHIFT
range 13 15
default "15" if PPC_256K_PAGES
default "14" if PPC64
- default "14" if KASAN
default "13"
help
Used to define the stack size. The default is almost always what you
diff --git a/arch/powerpc/include/asm/thread_info.h b/arch/powerpc/include/asm/thread_info.h
index 125328d1b980..af58f1ed3952 100644
--- a/arch/powerpc/include/asm/thread_info.h
+++ b/arch/powerpc/include/asm/thread_info.h
@@ -14,10 +14,16 @@
#ifdef __KERNEL__
-#if defined(CONFIG_VMAP_STACK) && CONFIG_THREAD_SHIFT < PAGE_SHIFT
+#ifdef CONFIG_KASAN
+#define MIN_THREAD_SHIFT (CONFIG_THREAD_SHIFT + 1)
+#else
+#define MIN_THREAD_SHIFT CONFIG_THREAD_SHIFT
+#endif
+
+#if defined(CONFIG_VMAP_STACK) && MIN_THREAD_SHIFT < PAGE_SHIFT
#define THREAD_SHIFT PAGE_SHIFT
#else
-#define THREAD_SHIFT CONFIG_THREAD_SHIFT
+#define THREAD_SHIFT MIN_THREAD_SHIFT
#endif
#define THREAD_SIZE (1 << THREAD_SHIFT)