Merge branches 'fixes' and 'misc' into for-next

6 files changed, 13 insertions, 22 deletions

diff --git a/arch/arm/kernel/entry-armv.S b/arch/arm/kernel/entry-armv.S
index a3d050ce9b79..2d2ea3ca880c 100644
--- a/arch/arm/kernel/entry-armv.S
+++ b/arch/arm/kernel/entry-armv.S
@@ -557,9 +557,16 @@ ENTRY(__switch_to)
 	ldmia	r4, {r4 - sl, fp, ip, lr}	@ Load all regs saved previously
 #ifdef CONFIG_VMAP_STACK
 	@
-	@ Do a dummy read from the new stack while running from the old one so
-	@ that we can rely on do_translation_fault() to fix up any stale PMD
-	@ entries covering the vmalloc region.
+	@ For a non-lazy mm switch, check_vmalloc_seq() has ensured that
+	@ that the active mm's page tables have mappings for the prev
+	@ task's stack and the next task's stack.
+	@
+	@ For a lazy mm switch the active mm's page tables have mappings
+	@ for the prev task's stack but might not have mappings for the
+	@ new task's stack. Do a dummy read from the new stack while
+	@ running from the old stack so that we can rely on
+	@ do_translation_fault() to populate missing PMD entries covering the
+	@ new task's stack in the old task's page tables.
 	@
 	ldr	r2, [ip]
 #ifdef CONFIG_KASAN_VMALLOC
diff --git a/arch/arm/mm/proc-arm920.S b/arch/arm/mm/proc-arm920.S
index 4727f4b5b6e8..0326067c6c75 100644
--- a/arch/arm/mm/proc-arm920.S
+++ b/arch/arm/mm/proc-arm920.S
@@ -8,8 +8,6 @@
  *
  * These are the low level assembler for performing cache and TLB
  * functions on the arm920.
- *
- *  CONFIG_CPU_ARM920_CPU_IDLE -> nohlt
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
diff --git a/arch/arm/mm/proc-arm922.S b/arch/arm/mm/proc-arm922.S
index 5a4a3f4f2683..3fe6fdf0d325 100644
--- a/arch/arm/mm/proc-arm922.S
+++ b/arch/arm/mm/proc-arm922.S
@@ -9,8 +9,6 @@
  *
  * These are the low level assembler for performing cache and TLB
  * functions on the arm922.
- *
- *  CONFIG_CPU_ARM922_CPU_IDLE -> nohlt
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
diff --git a/arch/arm/mm/proc-arm925.S b/arch/arm/mm/proc-arm925.S
index 1c4830afe1d3..2d15467e4a08 100644
--- a/arch/arm/mm/proc-arm925.S
+++ b/arch/arm/mm/proc-arm925.S
@@ -15,8 +15,6 @@
  * These are the low level assembler for performing cache and TLB
  * functions on the arm925.
  *
- *  CONFIG_CPU_ARM925_CPU_IDLE -> nohlt
- *
  * Some additional notes based on deciphering the TI TRM on OMAP-5910:
  *
  * NOTE1: The TI925T Configuration Register bit "D-cache clean and flush
diff --git a/arch/arm/mm/proc-arm926.S b/arch/arm/mm/proc-arm926.S
index a09cc3e02efd..d94aa8199452 100644
--- a/arch/arm/mm/proc-arm926.S
+++ b/arch/arm/mm/proc-arm926.S
@@ -8,8 +8,6 @@
  *
  * These are the low level assembler for performing cache and TLB
  * functions on the arm926.
- *
- *  CONFIG_CPU_ARM926_CPU_IDLE -> nohlt
  */
 #include <linux/linkage.h>
 #include <linux/init.h>
diff --git a/arch/arm/probes/kprobes/test-core.c b/arch/arm/probes/kprobes/test-core.c
index 7a2baa135f0f..2de28088dac8 100644
--- a/arch/arm/probes/kprobes/test-core.c
+++ b/arch/arm/probes/kprobes/test-core.c
@@ -1649,24 +1649,16 @@ out:
 
 	return ret;
 }
-
+late_initcall(run_all_tests);
 
 /*
  * Module setup
  */
 
-#ifdef MODULE
-
 static void __exit kprobe_test_exit(void)
 {
 }
-
-module_init(run_all_tests)
 module_exit(kprobe_test_exit)
-MODULE_LICENSE("GPL");
 
-#else /* !MODULE */
-
-late_initcall(run_all_tests);
-
-#endif
+MODULE_DESCRIPTION("Test code for ARM kprobes");
+MODULE_LICENSE("GPL");