Merge branch 'akpm' (patches from Andrew)

Merge fourth set of updates from Andrew Morton:

 - the rest of lib/

 - checkpatch updates

 - a few misc things

 - kasan: kernel address sanitizer

 - the rtc tree

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (108 commits)
  ARM: mvebu: enable Armada 38x RTC driver in mvebu_v7_defconfig
  ARM: mvebu: add Device Tree description of RTC on Armada 38x
  MAINTAINERS: add the RTC driver for the Armada38x
  drivers/rtc/rtc-armada38x: add a new RTC driver for recent mvebu SoCs
  rtc: armada38x: add the device tree binding documentation
  rtc: rtc-ab-b5ze-s3: add sub-minute alarm support
  rtc: add support for Abracon AB-RTCMC-32.768kHz-B5ZE-S3 I2C RTC chip
  of: add vendor prefix for Abracon Corporation
  drivers/rtc/rtc-rk808.c: fix rtc time reading issue
  drivers/rtc/rtc-isl12057.c: constify struct regmap_config
  drivers/rtc/rtc-at91sam9.c: constify struct regmap_config
  drivers/rtc/rtc-imxdi.c: add more known register bits
  drivers/rtc/rtc-imxdi.c: trivial clean up code
  ARM: mvebu: ISL12057 rtc chip can now wake up RN102, RN102 and RN2120
  rtc: rtc-isl12057: add isil,irq2-can-wakeup-machine property for in-tree users
  drivers/rtc/rtc-isl12057.c: add alarm support to Intersil ISL12057 RTC driver
  drivers/rtc/rtc-pcf2123.c: add support for devicetree
  kprobes: makes kprobes/enabled works correctly for optimized kprobes.
  kprobes: set kprobes_all_disarmed earlier to enable re-optimization.
  init: remove CONFIG_INIT_FALLBACK
  ...

1 files changed, 31 insertions, 0 deletions

diff --git a/arch/x86/include/asm/kasan.h b/arch/x86/include/asm/kasan.h
new file mode 100644
index 000000000000..8b22422fbad8
--- /dev/null
+++ b/arch/x86/include/asm/kasan.h
@@ -0,0 +1,31 @@
+#ifndef _ASM_X86_KASAN_H
+#define _ASM_X86_KASAN_H
+
+/*
+ * Compiler uses shadow offset assuming that addresses start
+ * from 0. Kernel addresses don't start from 0, so shadow
+ * for kernel really starts from compiler's shadow offset +
+ * 'kernel address space start' >> KASAN_SHADOW_SCALE_SHIFT
+ */
+#define KASAN_SHADOW_START      (KASAN_SHADOW_OFFSET + \
+					(0xffff800000000000ULL >> 3))
+/* 47 bits for kernel address -> (47 - 3) bits for shadow */
+#define KASAN_SHADOW_END        (KASAN_SHADOW_START + (1ULL << (47 - 3)))
+
+#ifndef __ASSEMBLY__
+
+extern pte_t kasan_zero_pte[];
+extern pte_t kasan_zero_pmd[];
+extern pte_t kasan_zero_pud[];
+
+#ifdef CONFIG_KASAN
+void __init kasan_map_early_shadow(pgd_t *pgd);
+void __init kasan_init(void);
+#else
+static inline void kasan_map_early_shadow(pgd_t *pgd) { }
+static inline void kasan_init(void) { }
+#endif
+
+#endif
+
+#endif