kasan, arm64: only use kasan_depth for software modes

[linux-2.6-microblaze.git] / arch / Kconfig

diff --git a/arch/Kconfig b/arch/Kconfig
index d4bdc19..a08999d 100644 (file)
--- a/arch/Kconfig
+++ b/arch/Kconfig
@@ -143,6 +143,22 @@ config UPROBES
            managed by the kernel and kept transparent to the probed
            application. )
 
+config HAVE_64BIT_ALIGNED_ACCESS
+       def_bool 64BIT && !HAVE_EFFICIENT_UNALIGNED_ACCESS
+       help
+         Some architectures require 64 bit accesses to be 64 bit
+         aligned, which also requires structs containing 64 bit values
+         to be 64 bit aligned too. This includes some 32 bit
+         architectures which can do 64 bit accesses, as well as 64 bit
+         architectures without unaligned access.
+
+         This symbol should be selected by an architecture if 64 bit
+         accesses are required to be 64 bit aligned in this way even
+         though it is not a 64 bit architecture.
+
+         See Documentation/unaligned-memory-access.txt for more
+         information on the topic of unaligned memory accesses.
+
 config HAVE_EFFICIENT_UNALIGNED_ACCESS
        bool
        help