diff --git a/arch/mips/include/asm/atomic.h b/arch/mips/include/asm/atomic.h
index 4c42fd9af7778462d18bea0724da19d2cdb35d4b..b347817522443fc6e9cd84672dee965885f0c2b7 100644
--- a/arch/mips/include/asm/atomic.h
+++ b/arch/mips/include/asm/atomic.h
@@ -507,7 +507,7 @@ static __inline__ long atomic64_sub_if_positive(long i, atomic64_t * v)
  * @u: ...unless v is equal to u.
  *
  * Atomically adds @a to @v, so long as it was not @u.
- * Returns the old value of @v.
+ * Returns true iff @v was not @u.
  */
 static __inline__ int atomic64_add_unless(atomic64_t *v, long a, long u)
 {
diff --git a/arch/mips/include/asm/cdmm.h b/arch/mips/include/asm/cdmm.h
index bece2064cc8cbf24f6c36c603b501c6b0dc19edd..c06dbf8ba937093d81b33cd14e00d9c74c944de6 100644
--- a/arch/mips/include/asm/cdmm.h
+++ b/arch/mips/include/asm/cdmm.h
@@ -84,6 +84,17 @@ void mips_cdmm_driver_unregister(struct mips_cdmm_driver *);
 	module_driver(__mips_cdmm_driver, mips_cdmm_driver_register, \
 			mips_cdmm_driver_unregister)
 
+/*
+ * builtin_mips_cdmm_driver() - Helper macro for drivers that don't do anything
+ * special in init and have no exit. This eliminates some boilerplate. Each
+ * driver may only use this macro once, and calling it replaces device_initcall
+ * (or in some cases, the legacy __initcall). This is meant to be a direct
+ * parallel of module_mips_cdmm_driver() above but without the __exit stuff that
+ * is not used for builtin cases.
+ */
+#define builtin_mips_cdmm_driver(__mips_cdmm_driver) \
+	builtin_driver(__mips_cdmm_driver, mips_cdmm_driver_register)
+
 /* drivers/tty/mips_ejtag_fdc.c */
 
 #ifdef CONFIG_MIPS_EJTAG_FDC_EARLYCON
diff --git a/arch/mips/kernel/idle.c b/arch/mips/kernel/idle.c
index 35af61530de1b4e9b5525606006b3d88575383aa..46794d64c0bfe3f9779cc43714cc7c3fbb6a10bc 100644
--- a/arch/mips/kernel/idle.c
+++ b/arch/mips/kernel/idle.c
@@ -171,7 +171,6 @@ void __init check_wait(void)
 	case CPU_BMIPS3300:
 	case CPU_BMIPS4350:
 	case CPU_BMIPS4380:
-	case CPU_BMIPS5000:
 	case CPU_CAVIUM_OCTEON:
 	case CPU_CAVIUM_OCTEON_PLUS:
 	case CPU_CAVIUM_OCTEON2:
@@ -182,7 +181,9 @@ void __init check_wait(void)
 	case CPU_XLP:
 		cpu_wait = r4k_wait;
 		break;
-
+	case CPU_BMIPS5000:
+		cpu_wait = r4k_wait_irqoff;
+		break;
 	case CPU_RM7000:
 		cpu_wait = rm7k_wait_irqoff;
 		break;
diff --git a/arch/mips/kernel/traps.c b/arch/mips/kernel/traps.c
index 4e106d52f30410c0abc24eba7ff866d62af13a16..886cb1976e90f682dafac7a958043d68bc4b6473 100644
--- a/arch/mips/kernel/traps.c
+++ b/arch/mips/kernel/traps.c
@@ -1857,12 +1857,14 @@ void __noreturn nmi_exception_handler(struct pt_regs *regs)
 {
 	char str[100];
 
+	nmi_enter();
 	raw_notifier_call_chain(&nmi_chain, 0, regs);
 	bust_spinlocks(1);
 	snprintf(str, 100, "CPU%d NMI taken, CP0_EPC=%lx\n",
 		 smp_processor_id(), regs->cp0_epc);
 	regs->cp0_epc = read_c0_errorepc();
 	die(str, regs);
+	nmi_exit();
 }
 
 #define VECTORSPACING 0x100	/* for EI/VI mode */
diff --git a/arch/mips/kernel/vmlinux.lds.S b/arch/mips/kernel/vmlinux.lds.S
index f4c23d9023be1f7acfadbba66bf9b05a079a60b8..0a93e83cd01479a4abc952e2e41a853dbf4159b9 100644
--- a/arch/mips/kernel/vmlinux.lds.S
+++ b/arch/mips/kernel/vmlinux.lds.S
@@ -17,7 +17,9 @@ OUTPUT_ARCH(mips)
 ENTRY(kernel_entry)
 PHDRS {
 	text PT_LOAD FLAGS(7);	/* RWX */
+#ifndef CONFIG_CAVIUM_OCTEON_SOC
 	note PT_NOTE FLAGS(4);	/* R__ */
+#endif /* CAVIUM_OCTEON_SOC */
 }
 
 #ifdef CONFIG_32BIT
@@ -71,7 +73,12 @@ SECTIONS
 		__stop___dbe_table = .;
 	}
 
-	NOTES :text :note
+#ifdef CONFIG_CAVIUM_OCTEON_SOC
+#define NOTES_HEADER
+#else /* CONFIG_CAVIUM_OCTEON_SOC */
+#define NOTES_HEADER :note
+#endif /* CONFIG_CAVIUM_OCTEON_SOC */
+	NOTES :text NOTES_HEADER
 	.dummy : { *(.dummy) } :text
 
 	_sdata = .;			/* Start of data section */
@@ -186,6 +193,7 @@ SECTIONS
 	DISCARDS
 	/DISCARD/ : {
 		/* ABI crap starts here */
+		*(.MIPS.abiflags)
 		*(.MIPS.options)
 		*(.options)
 		*(.pdr)