Merge branch 'akpm' (patches from Andrew)

Merge more updates from Andrew Morton:
 "190 patches.

  Subsystems affected by this patch series: mm (hugetlb, userfaultfd,
  vmscan, kconfig, proc, z3fold, zbud, ras, mempolicy, memblock,
  migration, thp, nommu, kconfig, madvise, memory-hotplug, zswap,
  zsmalloc, zram, cleanups, kfence, and hmm), procfs, sysctl, misc,
  core-kernel, lib, lz4, checkpatch, init, kprobes, nilfs2, hfs,
  signals, exec, kcov, selftests, compress/decompress, and ipc"

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (190 commits)
  ipc/util.c: use binary search for max_idx
  ipc/sem.c: use READ_ONCE()/WRITE_ONCE() for use_global_lock
  ipc: use kmalloc for msg_queue and shmid_kernel
  ipc sem: use kvmalloc for sem_undo allocation
  lib/decompressors: remove set but not used variabled 'level'
  selftests/vm/pkeys: exercise x86 XSAVE init state
  selftests/vm/pkeys: refill shadow register after implicit kernel write
  selftests/vm/pkeys: handle negative sys_pkey_alloc() return code
  selftests/vm/pkeys: fix alloc_random_pkey() to make it really, really random
  kcov: add __no_sanitize_coverage to fix noinstr for all architectures
  exec: remove checks in __register_bimfmt()
  x86: signal: don't do sas_ss_reset() until we are certain that sigframe won't be abandoned
  hfsplus: report create_date to kstat.btime
  hfsplus: remove unnecessary oom message
  nilfs2: remove redundant continue statement in a while-loop
  kprobes: remove duplicated strong free_insn_page in x86 and s390
  init: print out unknown kernel parameters
  checkpatch: do not complain about positive return values starting with EPOLL
  checkpatch: improve the indented label test
  checkpatch: scripts/spdxcheck.py now requires python3
  ...

8 files changed, 6 insertions, 10 deletions

diff --git a/arch/mips/Kconfig b/arch/mips/Kconfig
index e039e7d542c4..cee6087cd686 100644
--- a/arch/mips/Kconfig
+++ b/arch/mips/Kconfig
@@ -3274,13 +3274,6 @@ config I8253
 	select CLKSRC_I8253
 	select CLKEVT_I8253
 	select MIPS_EXTERNAL_TIMER
-
-config ZONE_DMA
-	bool
-
-config ZONE_DMA32
-	bool
-
 endmenu
 
 config TRAD_SIGNALS
diff --git a/arch/mips/include/asm/pgalloc.h b/arch/mips/include/asm/pgalloc.h
index d0cf997b4ba8..4b2567d6b2df 100644
--- a/arch/mips/include/asm/pgalloc.h
+++ b/arch/mips/include/asm/pgalloc.h
@@ -28,7 +28,6 @@ static inline void pmd_populate(struct mm_struct *mm, pmd_t *pmd,
 {
 	set_pmd(pmd, __pmd((unsigned long)page_address(pte)));
 }
-#define pmd_pgtable(pmd) pmd_page(pmd)
 
 /*
  * Initialize a new pmd table with invalid pointers.
diff --git a/arch/mips/include/asm/pgtable-32.h b/arch/mips/include/asm/pgtable-32.h
index 6c0532d7b211..95df9c293d8d 100644
--- a/arch/mips/include/asm/pgtable-32.h
+++ b/arch/mips/include/asm/pgtable-32.h
@@ -93,7 +93,6 @@ extern int add_temporary_entry(unsigned long entrylo0, unsigned long entrylo1,
 #endif
 
 #define USER_PTRS_PER_PGD	(0x80000000UL/PGDIR_SIZE)
-#define FIRST_USER_ADDRESS	0UL
 
 #define VMALLOC_START	  MAP_BASE
 
diff --git a/arch/mips/include/asm/pgtable-64.h b/arch/mips/include/asm/pgtable-64.h
index 1e7d6ce9d8d6..046465906c82 100644
--- a/arch/mips/include/asm/pgtable-64.h
+++ b/arch/mips/include/asm/pgtable-64.h
@@ -137,7 +137,6 @@
 #define PTRS_PER_PTE	((PAGE_SIZE << PTE_ORDER) / sizeof(pte_t))
 
 #define USER_PTRS_PER_PGD       ((TASK_SIZE64 / PGDIR_SIZE)?(TASK_SIZE64 / PGDIR_SIZE):1)
-#define FIRST_USER_ADDRESS	0UL
 
 /*
  * TLB refill handlers also map the vmalloc area into xuseg.  Avoid
diff --git a/arch/mips/include/uapi/asm/mman.h b/arch/mips/include/uapi/asm/mman.h
index 57dc2ac4f8bd..40b210c65a5a 100644
--- a/arch/mips/include/uapi/asm/mman.h
+++ b/arch/mips/include/uapi/asm/mman.h
@@ -98,6 +98,9 @@
 #define MADV_COLD	20		/* deactivate these pages */
 #define MADV_PAGEOUT	21		/* reclaim these pages */
 
+#define MADV_POPULATE_READ	22	/* populate (prefault) page tables readable */
+#define MADV_POPULATE_WRITE	23	/* populate (prefault) page tables writable */
+
 /* compatibility flags */
 #define MAP_FILE	0
 
diff --git a/arch/mips/kernel/relocate.c b/arch/mips/kernel/relocate.c
index 499a5357c09f..56b51de2dc51 100644
--- a/arch/mips/kernel/relocate.c
+++ b/arch/mips/kernel/relocate.c
@@ -18,6 +18,7 @@
 #include <linux/kernel.h>
 #include <linux/libfdt.h>
 #include <linux/of_fdt.h>
+#include <linux/panic_notifier.h>
 #include <linux/sched/task.h>
 #include <linux/start_kernel.h>
 #include <linux/string.h>
diff --git a/arch/mips/sgi-ip22/ip22-reset.c b/arch/mips/sgi-ip22/ip22-reset.c
index c374f3ceec38..9028dbbb45dd 100644
--- a/arch/mips/sgi-ip22/ip22-reset.c
+++ b/arch/mips/sgi-ip22/ip22-reset.c
@@ -12,6 +12,7 @@
 #include <linux/kernel.h>
 #include <linux/sched/signal.h>
 #include <linux/notifier.h>
+#include <linux/panic_notifier.h>
 #include <linux/pm.h>
 #include <linux/timer.h>
 
diff --git a/arch/mips/sgi-ip32/ip32-reset.c b/arch/mips/sgi-ip32/ip32-reset.c
index 20d8637340be..18d1c115cd53 100644
--- a/arch/mips/sgi-ip32/ip32-reset.c
+++ b/arch/mips/sgi-ip32/ip32-reset.c
@@ -12,6 +12,7 @@
 #include <linux/init.h>
 #include <linux/kernel.h>
 #include <linux/module.h>
+#include <linux/panic_notifier.h>
 #include <linux/sched.h>
 #include <linux/sched/signal.h>
 #include <linux/notifier.h>