Merge branch 'akpm' (patches from Andrew)

Merge misc updates from Andrew Morton:

 - large KASAN update to use arm's "software tag-based mode"

 - a few misc things

 - sh updates

 - ocfs2 updates

 - just about all of MM

* emailed patches from Andrew Morton <akpm@linux-foundation.org>: (167 commits)
  kernel/fork.c: mark 'stack_vm_area' with __maybe_unused
  memcg, oom: notify on oom killer invocation from the charge path
  mm, swap: fix swapoff with KSM pages
  include/linux/gfp.h: fix typo
  mm/hmm: fix memremap.h, move dev_page_fault_t callback to hmm
  hugetlbfs: Use i_mmap_rwsem to fix page fault/truncate race
  hugetlbfs: use i_mmap_rwsem for more pmd sharing synchronization
  memory_hotplug: add missing newlines to debugging output
  mm: remove __hugepage_set_anon_rmap()
  include/linux/vmstat.h: remove unused page state adjustment macro
  mm/page_alloc.c: allow error injection
  mm: migrate: drop unused argument of migrate_page_move_mapping()
  blkdev: avoid migration stalls for blkdev pages
  mm: migrate: provide buffer_migrate_page_norefs()
  mm: migrate: move migrate_page_lock_buffers()
  mm: migrate: lock buffers before migrate_page_move_mapping()
  mm: migration: factor out code to compute expected number of page references
  mm, page_alloc: enable pcpu_drain with zone capability
  kmemleak: add config to select auto scan
  mm/page_alloc.c: don't call kasan_free_pages() at deferred mem init
  ...

Documentation/ABI/testing/sysfs-block-zram

@@ -98,3 +98,35 @@ Description:
 		The backing_dev file is read-write and set up backing
 		device for zram to write incompressible pages.
 		For using, user should enable CONFIG_ZRAM_WRITEBACK.
+
+What:		/sys/block/zram<id>/idle
+Date:		November 2018
+Contact:	Minchan Kim <minchan@kernel.org>
+Description:
+		idle file is write-only and mark zram slot as idle.
+		If system has mounted debugfs, user can see which slots
+		are idle via /sys/kernel/debug/zram/zram<id>/block_state
+
+What:		/sys/block/zram<id>/writeback
+Date:		November 2018
+Contact:	Minchan Kim <minchan@kernel.org>
+Description:
+		The writeback file is write-only and trigger idle and/or
+		huge page writeback to backing device.
+
+What:		/sys/block/zram<id>/bd_stat
+Date:		November 2018
+Contact:	Minchan Kim <minchan@kernel.org>
+Description:
+		The bd_stat file is read-only and represents backing device's
+		statistics (bd_count, bd_reads, bd_writes) in a format
+		similar to block layer statistics file format.
+
+What:		/sys/block/zram<id>/writeback_limit
+Date:		November 2018
+Contact:	Minchan Kim <minchan@kernel.org>
+Description:
+		The writeback_limit file is read-write and specifies the maximum
+		amount of writeback ZRAM can do. The limit could be changed
+		in run time and "0" means disable the limit.
+		No limit is the initial state.

Documentation/blockdev/zram.txt

@@ -164,11 +164,14 @@ reset             WO    trigger device reset
 mem_used_max      WO    reset the `mem_used_max' counter (see later)
 mem_limit         WO    specifies the maximum amount of memory ZRAM can use
                         to store the compressed data
+writeback_limit   WO    specifies the maximum amount of write IO zram can
+			write out to backing device as 4KB unit
 max_comp_streams  RW    the number of possible concurrent compress operations
 comp_algorithm    RW    show and change the compression algorithm
 compact           WO    trigger memory compaction
 debug_stat        RO    this file is used for zram debugging purposes
 backing_dev	  RW	set up backend storage for zram to write out
+idle		  WO	mark allocated slot as idle
 
 
 User space is advised to use the following files to read the device statistics.
@@ -220,6 +223,17 @@ line of text and contains the following stats separated by whitespace:
  pages_compacted  the number of pages freed during compaction
  huge_pages	  the number of incompressible pages
 
+File /sys/block/zram<id>/bd_stat
+
+The stat file represents device's backing device statistics. It consists of
+a single line of text and contains the following stats separated by whitespace:
+ bd_count	size of data written in backing device.
+		Unit: 4K bytes
+ bd_reads	the number of reads from backing device
+		Unit: 4K bytes
+ bd_writes	the number of writes to backing device
+		Unit: 4K bytes
+
 9) Deactivate:
 	swapoff /dev/zram0
 	umount /dev/zram1
@@ -237,11 +251,60 @@ line of text and contains the following stats separated by whitespace:
 
 = writeback
 
-With incompressible pages, there is no memory saving with zram.
-Instead, with CONFIG_ZRAM_WRITEBACK, zram can write incompressible page
+With CONFIG_ZRAM_WRITEBACK, zram can write idle/incompressible page
 to backing storage rather than keeping it in memory.
-User should set up backing device via /sys/block/zramX/backing_dev
-before disksize setting.
+To use the feature, admin should set up backing device via
+
+	"echo /dev/sda5 > /sys/block/zramX/backing_dev"
+
+before disksize setting. It supports only partition at this moment.
+If admin want to use incompressible page writeback, they could do via
+
+	"echo huge > /sys/block/zramX/write"
+
+To use idle page writeback, first, user need to declare zram pages
+as idle.
+
+	"echo all > /sys/block/zramX/idle"
+
+From now on, any pages on zram are idle pages. The idle mark
+will be removed until someone request access of the block.
+IOW, unless there is access request, those pages are still idle pages.
+
+Admin can request writeback of those idle pages at right timing via
+
+	"echo idle > /sys/block/zramX/writeback"
+
+With the command, zram writeback idle pages from memory to the storage.
+
+If there are lots of write IO with flash device, potentially, it has
+flash wearout problem so that admin needs to design write limitation
+to guarantee storage health for entire product life.
+To overcome the concern, zram supports "writeback_limit".
+The "writeback_limit"'s default value is 0 so that it doesn't limit
+any writeback. If admin want to measure writeback count in a certain
+period, he could know it via /sys/block/zram0/bd_stat's 3rd column.
+
+If admin want to limit writeback as per-day 400M, he could do it
+like below.
+
+    MB_SHIFT=20
+    4K_SHIFT=12
+    echo $((400<<MB_SHIFT>>4K_SHIFT)) > \
+	    /sys/block/zram0/writeback_limit.
+
+If admin want to allow further write again, he could do it like below
+
+    echo 0 > /sys/block/zram0/writeback_limit
+
+If admin want to see remaining writeback budget since he set,
+
+    cat /sys/block/zram0/writeback_limit
+
+The writeback_limit count will reset whenever you reset zram(e.g.,
+system reboot, echo 1 > /sys/block/zramX/reset) so keeping how many of
+writeback happened until you reset the zram to allocate extra writeback
+budget in next setting is user's job.
 
 = memory tracking
 
@@ -251,16 +314,17 @@ pages of the process with*pagemap.
 If you enable the feature, you could see block state via
 /sys/kernel/debug/zram/zram0/block_state". The output is as follows,
 
-	  300    75.033841 .wh
-	  301    63.806904 s..
-	  302    63.806919 ..h
+	  300    75.033841 .wh.
+	  301    63.806904 s...
+	  302    63.806919 ..hi
 
 First column is zram's block index.
 Second column is access time since the system was booted
 Third column is state of the block.
 (s: same page
 w: written page to backing store
-h: huge page)
+h: huge page
+i: idle page)
 
 First line of above example says 300th block is accessed at 75.033841sec
 and the block's state is huge so it is written back to the backing

Documentation/filesystems/proc.txt

@@ -182,6 +182,7 @@ read the file /proc/PID/status:
   VmSwap:        0 kB
   HugetlbPages:          0 kB
   CoreDumping:    0
+  THP_enabled:	  1
   Threads:        1
   SigQ:   0/28578
   SigPnd: 0000000000000000
@@ -256,6 +257,8 @@ Table 1-2: Contents of the status files (as of 4.8)
  HugetlbPages                size of hugetlb memory portions
  CoreDumping                 process's memory is currently being dumped
                              (killing the process may lead to a corrupted core)
+ THP_enabled		     process is allowed to use THP (returns 0 when
+			     PR_SET_THP_DISABLE is set on the process
  Threads                     number of threads
  SigQ                        number of signals queued/max. number for queue
  SigPnd                      bitmap of pending signals for the thread
@@ -425,6 +428,7 @@ SwapPss:               0 kB
 KernelPageSize:        4 kB
 MMUPageSize:           4 kB
 Locked:                0 kB
+THPeligible:           0
 VmFlags: rd ex mr mw me dw
 
 the first of these lines shows the same information as is displayed for the
@@ -462,6 +466,8 @@ replaced by copy-on-write) part of the underlying shmem object out on swap.
 "SwapPss" shows proportional swap share of this mapping. Unlike "Swap", this
 does not take into account swapped out page of underlying shmem objects.
 "Locked" indicates whether the mapping is locked in memory or not.
+"THPeligible" indicates whether the mapping is eligible for THP pages - 1 if
+true, 0 otherwise.
 
 "VmFlags" field deserves a separate description. This member represents the kernel
 flags associated with the particular virtual memory area in two letter encoded
@@ -496,7 +502,9 @@ manner. The codes are the following:
 
 Note that there is no guarantee that every flag and associated mnemonic will
 be present in all further kernel releases. Things get changed, the flags may
-be vanished or the reverse -- new added.
+be vanished or the reverse -- new added. Interpretation of their meaning
+might change in future as well. So each consumer of these flags has to
+follow each specific kernel version for the exact semantic.
 
 This file is only present if the CONFIG_MMU kernel configuration option is
 enabled.

Documentation/sysctl/vm.txt

@@ -63,6 +63,7 @@ Currently, these files are in /proc/sys/vm:
 - swappiness
 - user_reserve_kbytes
 - vfs_cache_pressure
+- watermark_boost_factor
 - watermark_scale_factor
 - zone_reclaim_mode
 
@@ -856,6 +857,26 @@ ten times more freeable objects than there are.
 
 =============================================================
 
+watermark_boost_factor:
+
+This factor controls the level of reclaim when memory is being fragmented.
+It defines the percentage of the high watermark of a zone that will be
+reclaimed if pages of different mobility are being mixed within pageblocks.
+The intent is that compaction has less work to do in the future and to
+increase the success rate of future high-order allocations such as SLUB
+allocations, THP and hugetlbfs pages.
+
+To make it sensible with respect to the watermark_scale_factor parameter,
+the unit is in fractions of 10,000. The default value of 15,000 means
+that up to 150% of the high watermark will be reclaimed in the event of
+a pageblock being mixed due to fragmentation. The level of reclaim is
+determined by the number of fragmentation events that occurred in the
+recent past. If this value is smaller than a pageblock then a pageblocks
+worth of pages will be reclaimed (e.g.  2MB on 64-bit x86). A boost factor
+of 0 will disable the feature.
+
+=============================================================
+
 watermark_scale_factor:
 
 This factor controls the aggressiveness of kswapd. It defines the

arch/arm64/Kconfig

@@ -110,6 +110,7 @@ config ARM64
 	select HAVE_ARCH_JUMP_LABEL
 	select HAVE_ARCH_JUMP_LABEL_RELATIVE
 	select HAVE_ARCH_KASAN if !(ARM64_16K_PAGES && ARM64_VA_BITS_48)
+	select HAVE_ARCH_KASAN_SW_TAGS if HAVE_ARCH_KASAN
 	select HAVE_ARCH_KGDB
 	select HAVE_ARCH_MMAP_RND_BITS
 	select HAVE_ARCH_MMAP_RND_COMPAT_BITS if COMPAT

arch/arm64/Makefile

@@ -101,10 +101,19 @@ else
 TEXT_OFFSET := 0x00080000
 endif
 
+ifeq ($(CONFIG_KASAN_SW_TAGS), y)
+KASAN_SHADOW_SCALE_SHIFT := 4
+else
+KASAN_SHADOW_SCALE_SHIFT := 3
+endif
+
+KBUILD_CFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$(KASAN_SHADOW_SCALE_SHIFT)
+KBUILD_CPPFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$(KASAN_SHADOW_SCALE_SHIFT)
+KBUILD_AFLAGS += -DKASAN_SHADOW_SCALE_SHIFT=$(KASAN_SHADOW_SCALE_SHIFT)
+
 # KASAN_SHADOW_OFFSET = VA_START + (1 << (VA_BITS - KASAN_SHADOW_SCALE_SHIFT))
 #				 - (1 << (64 - KASAN_SHADOW_SCALE_SHIFT))
 # in 32-bit arithmetic
-KASAN_SHADOW_SCALE_SHIFT := 3
 KASAN_SHADOW_OFFSET := $(shell printf "0x%08x00000000\n" $$(( \
 	(0xffffffff & (-1 << ($(CONFIG_ARM64_VA_BITS) - 32))) \
 	+ (1 << ($(CONFIG_ARM64_VA_BITS) - 32 - $(KASAN_SHADOW_SCALE_SHIFT))) \

arch/arm64/include/asm/brk-imm.h

@@ -16,10 +16,12 @@
  * 0x400: for dynamic BRK instruction
  * 0x401: for compile time BRK instruction
  * 0x800: kernel-mode BUG() and WARN() traps
+ * 0x9xx: tag-based KASAN trap (allowed values 0x900 - 0x9ff)
  */
 #define FAULT_BRK_IMM			0x100
 #define KGDB_DYN_DBG_BRK_IMM		0x400
 #define KGDB_COMPILED_DBG_BRK_IMM	0x401
 #define BUG_BRK_IMM			0x800
+#define KASAN_BRK_IMM			0x900
 
 #endif

arch/arm64/include/asm/kasan.h

@@ -4,12 +4,16 @@
 
 #ifndef __ASSEMBLY__
 
-#ifdef CONFIG_KASAN
-
 #include <linux/linkage.h>
 #include <asm/memory.h>
 #include <asm/pgtable-types.h>
 
+#define arch_kasan_set_tag(addr, tag)	__tag_set(addr, tag)
+#define arch_kasan_reset_tag(addr)	__tag_reset(addr)
+#define arch_kasan_get_tag(addr)	__tag_get(addr)
+
+#ifdef CONFIG_KASAN
+
 /*
  * KASAN_SHADOW_START: beginning of the kernel virtual addresses.
  * KASAN_SHADOW_END: KASAN_SHADOW_START + 1/N of kernel virtual addresses,

arch/arm64/include/asm/memory.h

@@ -74,13 +74,11 @@
 #endif
 
 /*
- * KASAN requires 1/8th of the kernel virtual address space for the shadow
- * region. KASAN can bloat the stack significantly, so double the (minimum)
- * stack size when KASAN is in use, and then double it again if KASAN_EXTRA is
- * on.
+ * Generic and tag-based KASAN require 1/8th and 1/16th of the kernel virtual
+ * address space for the shadow region respectively. They can bloat the stack
+ * significantly, so double the (minimum) stack size when they are in use.
  */
 #ifdef CONFIG_KASAN
-#define KASAN_SHADOW_SCALE_SHIFT 3
 #define KASAN_SHADOW_SIZE	(UL(1) << (VA_BITS - KASAN_SHADOW_SCALE_SHIFT))
 #ifdef CONFIG_KASAN_EXTRA
 #define KASAN_THREAD_SHIFT	2
@@ -220,6 +218,26 @@ extern u64			vabits_user;
  */
 #define PHYS_PFN_OFFSET	(PHYS_OFFSET >> PAGE_SHIFT)
 
+/*
+ * When dealing with data aborts, watchpoints, or instruction traps we may end
+ * up with a tagged userland pointer. Clear the tag to get a sane pointer to
+ * pass on to access_ok(), for instance.
+ */
+#define untagged_addr(addr)	\
+	((__typeof__(addr))sign_extend64((u64)(addr), 55))
+
+#ifdef CONFIG_KASAN_SW_TAGS
+#define __tag_shifted(tag)	((u64)(tag) << 56)
+#define __tag_set(addr, tag)	(__typeof__(addr))( \
+		((u64)(addr) & ~__tag_shifted(0xff)) | __tag_shifted(tag))
+#define __tag_reset(addr)	untagged_addr(addr)
+#define __tag_get(addr)		(__u8)((u64)(addr) >> 56)
+#else
+#define __tag_set(addr, tag)	(addr)
+#define __tag_reset(addr)	(addr)
+#define __tag_get(addr)		0
+#endif
+
 /*
  * Physical vs virtual RAM address space conversion.  These are
  * private definitions which should NOT be used outside memory.h
@@ -303,7 +321,13 @@ static inline void *phys_to_virt(phys_addr_t x)
 #define __virt_to_pgoff(kaddr)	(((u64)(kaddr) & ~PAGE_OFFSET) / PAGE_SIZE * sizeof(struct page))
 #define __page_to_voff(kaddr)	(((u64)(kaddr) & ~VMEMMAP_START) * PAGE_SIZE / sizeof(struct page))
 
-#define page_to_virt(page)	((void *)((__page_to_voff(page)) | PAGE_OFFSET))
+#define page_to_virt(page)	({					\
+	unsigned long __addr =						\
+		((__page_to_voff(page)) | PAGE_OFFSET);			\
+	__addr = __tag_set(__addr, page_kasan_tag(page));		\
+	((void *)__addr);						\
+})
+
 #define virt_to_page(vaddr)	((struct page *)((__virt_to_pgoff(vaddr)) | VMEMMAP_START))
 
 #define _virt_addr_valid(kaddr)	pfn_valid((((u64)(kaddr) & ~PAGE_OFFSET) \
@@ -311,9 +335,10 @@ static inline void *phys_to_virt(phys_addr_t x)
 #endif
 #endif
 
-#define _virt_addr_is_linear(kaddr)	(((u64)(kaddr)) >= PAGE_OFFSET)
-#define virt_addr_valid(kaddr)		(_virt_addr_is_linear(kaddr) && \
-					 _virt_addr_valid(kaddr))
+#define _virt_addr_is_linear(kaddr)	\
+	(__tag_reset((u64)(kaddr)) >= PAGE_OFFSET)
+#define virt_addr_valid(kaddr)		\
+	(_virt_addr_is_linear(kaddr) && _virt_addr_valid(kaddr))
 
 #include <asm-generic/memory_model.h>
 

arch/arm64/include/asm/pgtable-hwdef.h

@@ -299,6 +299,7 @@
 #define TCR_A1			(UL(1) << 22)
 #define TCR_ASID16		(UL(1) << 36)
 #define TCR_TBI0		(UL(1) << 37)
+#define TCR_TBI1		(UL(1) << 38)
 #define TCR_HA			(UL(1) << 39)
 #define TCR_HD			(UL(1) << 40)
 #define TCR_NFD1		(UL(1) << 54)

arch/arm64/include/asm/uaccess.h

@@ -95,13 +95,6 @@ static inline unsigned long __range_ok(const void __user *addr, unsigned long si
 	return ret;
 }
 
-/*
- * When dealing with data aborts, watchpoints, or instruction traps we may end
- * up with a tagged userland pointer. Clear the tag to get a sane pointer to
- * pass on to access_ok(), for instance.
- */
-#define untagged_addr(addr)		sign_extend64(addr, 55)
-
 #define access_ok(type, addr, size)	__range_ok(addr, size)
 #define user_addr_max			get_fs
 

arch/arm64/kernel/traps.c

@@ -35,6 +35,7 @@
 #include <linux/sizes.h>
 #include <linux/syscalls.h>
 #include <linux/mm_types.h>
+#include <linux/kasan.h>
 
 #include <asm/atomic.h>
 #include <asm/bug.h>
@@ -969,6 +970,58 @@ static struct break_hook bug_break_hook = {
 	.fn = bug_handler,
 };
 
+#ifdef CONFIG_KASAN_SW_TAGS
+
+#define KASAN_ESR_RECOVER	0x20
+#define KASAN_ESR_WRITE	0x10
+#define KASAN_ESR_SIZE_MASK	0x0f
+#define KASAN_ESR_SIZE(esr)	(1 << ((esr) & KASAN_ESR_SIZE_MASK))
+
+static int kasan_handler(struct pt_regs *regs, unsigned int esr)
+{
+	bool recover = esr & KASAN_ESR_RECOVER;
+	bool write = esr & KASAN_ESR_WRITE;
+	size_t size = KASAN_ESR_SIZE(esr);
+	u64 addr = regs->regs[0];
+	u64 pc = regs->pc;
+
+	if (user_mode(regs))
+		return DBG_HOOK_ERROR;
+
+	kasan_report(addr, size, write, pc);
+
+	/*
+	 * The instrumentation allows to control whether we can proceed after
+	 * a crash was detected. This is done by passing the -recover flag to
+	 * the compiler. Disabling recovery allows to generate more compact
+	 * code.
+	 *
+	 * Unfortunately disabling recovery doesn't work for the kernel right
+	 * now. KASAN reporting is disabled in some contexts (for example when
+	 * the allocator accesses slab object metadata; this is controlled by
+	 * current->kasan_depth). All these accesses are detected by the tool,
+	 * even though the reports for them are not printed.
+	 *
+	 * This is something that might be fixed at some point in the future.
+	 */
+	if (!recover)
+		die("Oops - KASAN", regs, 0);
+
+	/* If thread survives, skip over the brk instruction and continue: */
+	arm64_skip_faulting_instruction(regs, AARCH64_INSN_SIZE);
+	return DBG_HOOK_HANDLED;
+}
+
+#define KASAN_ESR_VAL (0xf2000000 | KASAN_BRK_IMM)
+#define KASAN_ESR_MASK 0xffffff00
+
+static struct break_hook kasan_break_hook = {
+	.esr_val = KASAN_ESR_VAL,
+	.esr_mask = KASAN_ESR_MASK,
+	.fn = kasan_handler,
+};
+#endif
+
 /*
  * Initial handler for AArch64 BRK exceptions
  * This handler only used until debug_traps_init().
@@ -976,6 +1029,10 @@ static struct break_hook bug_break_hook = {
 int __init early_brk64(unsigned long addr, unsigned int esr,
 		struct pt_regs *regs)
 {
+#ifdef CONFIG_KASAN_SW_TAGS
+	if ((esr & KASAN_ESR_MASK) == KASAN_ESR_VAL)
+		return kasan_handler(regs, esr) != DBG_HOOK_HANDLED;
+#endif
 	return bug_handler(regs, esr) != DBG_HOOK_HANDLED;
 }
 
@@ -983,4 +1040,7 @@ int __init early_brk64(unsigned long addr, unsigned int esr,
 void __init trap_init(void)
 {
 	register_break_hook(&bug_break_hook);
+#ifdef CONFIG_KASAN_SW_TAGS
+	register_break_hook(&kasan_break_hook);
+#endif
 }

arch/arm64/mm/fault.c

@@ -40,6 +40,7 @@
 #include <asm/daifflags.h>
 #include <asm/debug-monitors.h>
 #include <asm/esr.h>
+#include <asm/kasan.h>
 #include <asm/sysreg.h>
 #include <asm/system_misc.h>
 #include <asm/pgtable.h>
@@ -132,6 +133,18 @@ static void mem_abort_decode(unsigned int esr)
 		data_abort_decode(esr);
 }
 
+static inline bool is_ttbr0_addr(unsigned long addr)
+{
+	/* entry assembly clears tags for TTBR0 addrs */
+	return addr < TASK_SIZE;
+}
+
+static inline bool is_ttbr1_addr(unsigned long addr)
+{
+	/* TTBR1 addresses may have a tag if KASAN_SW_TAGS is in use */
+	return arch_kasan_reset_tag(addr) >= VA_START;
+}
+
 /*
  * Dump out the page tables associated with 'addr' in the currently active mm.
  */
@@ -141,7 +154,7 @@ void show_pte(unsigned long addr)
 	pgd_t *pgdp;
 	pgd_t pgd;
 
-	if (addr < TASK_SIZE) {
+	if (is_ttbr0_addr(addr)) {
 		/* TTBR0 */
 		mm = current->active_mm;
 		if (mm == &init_mm) {
@@ -149,7 +162,7 @@ void show_pte(unsigned long addr)
 				 addr);
 			return;
 		}
-	} else if (addr >= VA_START) {
+	} else if (is_ttbr1_addr(addr)) {
 		/* TTBR1 */
 		mm = &init_mm;
 	} else {
@@ -254,7 +267,7 @@ static inline bool is_el1_permission_fault(unsigned long addr, unsigned int esr,
 	if (fsc_type == ESR_ELx_FSC_PERM)
 		return true;
 
-	if (addr < TASK_SIZE && system_uses_ttbr0_pan())
+	if (is_ttbr0_addr(addr) && system_uses_ttbr0_pan())
 		return fsc_type == ESR_ELx_FSC_FAULT &&
 			(regs->pstate & PSR_PAN_BIT);
 
@@ -319,7 +332,7 @@ static void set_thread_esr(unsigned long address, unsigned int esr)
 	 * type", so we ignore this wrinkle and just return the translation
 	 * fault.)
 	 */
-	if (current->thread.fault_address >= TASK_SIZE) {
+	if (!is_ttbr0_addr(current->thread.fault_address)) {
 		switch (ESR_ELx_EC(esr)) {
 		case ESR_ELx_EC_DABT_LOW:
 			/*
@@ -455,7 +468,7 @@ static int __kprobes do_page_fault(unsigned long addr, unsigned int esr,
 		mm_flags |= FAULT_FLAG_WRITE;
 	}
 
-	if (addr < TASK_SIZE && is_el1_permission_fault(addr, esr, regs)) {
+	if (is_ttbr0_addr(addr) && is_el1_permission_fault(addr, esr, regs)) {
 		/* regs->orig_addr_limit may be 0 if we entered from EL0 */
 		if (regs->orig_addr_limit == KERNEL_DS)
 			die_kernel_fault("access to user memory with fs=KERNEL_DS",
@@ -603,7 +616,7 @@ static int __kprobes do_translation_fault(unsigned long addr,
 					  unsigned int esr,
 					  struct pt_regs *regs)
 {
-	if (addr < TASK_SIZE)
+	if (is_ttbr0_addr(addr))
 		return do_page_fault(addr, esr, regs);
 
 	do_bad_area(addr, esr, regs);
@@ -758,7 +771,7 @@ asmlinkage void __exception do_el0_ia_bp_hardening(unsigned long addr,
 	 * re-enabled IRQs. If the address is a kernel address, apply
 	 * BP hardening prior to enabling IRQs and pre-emption.
 	 */
-	if (addr > TASK_SIZE)
+	if (!is_ttbr0_addr(addr))
 		arm64_apply_bp_hardening();
 
 	local_daif_restore(DAIF_PROCCTX);
@@ -771,7 +784,7 @@ asmlinkage void __exception do_sp_pc_abort(unsigned long addr,
 					   struct pt_regs *regs)
 {
 	if (user_mode(regs)) {
-		if (instruction_pointer(regs) > TASK_SIZE)
+		if (!is_ttbr0_addr(instruction_pointer(regs)))
 			arm64_apply_bp_hardening();
 		local_daif_restore(DAIF_PROCCTX);
 	}
@@ -825,7 +838,7 @@ asmlinkage int __exception do_debug_exception(unsigned long addr,
 	if (interrupts_enabled(regs))
 		trace_hardirqs_off();
 
-	if (user_mode(regs) && instruction_pointer(regs) > TASK_SIZE)
+	if (user_mode(regs) && !is_ttbr0_addr(instruction_pointer(regs)))
 		arm64_apply_bp_hardening();
 
 	if (!inf->fn(addr, esr, regs)) {

arch/arm64/mm/kasan_init.c

@@ -39,7 +39,15 @@ static phys_addr_t __init kasan_alloc_zeroed_page(int node)
 {
 	void *p = memblock_alloc_try_nid(PAGE_SIZE, PAGE_SIZE,
 					      __pa(MAX_DMA_ADDRESS),
-					      MEMBLOCK_ALLOC_ACCESSIBLE, node);
+					      MEMBLOCK_ALLOC_KASAN, node);
+	return __pa(p);
+}
+
+static phys_addr_t __init kasan_alloc_raw_page(int node)
+{
+	void *p = memblock_alloc_try_nid_raw(PAGE_SIZE, PAGE_SIZE,
+						__pa(MAX_DMA_ADDRESS),
+						MEMBLOCK_ALLOC_KASAN, node);
 	return __pa(p);
 }
 
@@ -47,8 +55,9 @@ static pte_t *__init kasan_pte_offset(pmd_t *pmdp, unsigned long addr, int node,
 				      bool early)
 {
 	if (pmd_none(READ_ONCE(*pmdp))) {
-		phys_addr_t pte_phys = early ? __pa_symbol(kasan_zero_pte)
-					     : kasan_alloc_zeroed_page(node);
+		phys_addr_t pte_phys = early ?
+				__pa_symbol(kasan_early_shadow_pte)
+					: kasan_alloc_zeroed_page(node);
 		__pmd_populate(pmdp, pte_phys, PMD_TYPE_TABLE);
 	}
 
@@ -60,8 +69,9 @@ static pmd_t *__init kasan_pmd_offset(pud_t *pudp, unsigned long addr, int node,
 				      bool early)
 {
 	if (pud_none(READ_ONCE(*pudp))) {
-		phys_addr_t pmd_phys = early ? __pa_symbol(kasan_zero_pmd)
-					     : kasan_alloc_zeroed_page(node);
+		phys_addr_t pmd_phys = early ?
+				__pa_symbol(kasan_early_shadow_pmd)
+					: kasan_alloc_zeroed_page(node);
 		__pud_populate(pudp, pmd_phys, PMD_TYPE_TABLE);
 	}
 
@@ -72,8 +82,9 @@ static pud_t *__init kasan_pud_offset(pgd_t *pgdp, unsigned long addr, int node,
 				      bool early)
 {
 	if (pgd_none(READ_ONCE(*pgdp))) {
-		phys_addr_t pud_phys = early ? __pa_symbol(kasan_zero_pud)
-					     : kasan_alloc_zeroed_page(node);
+		phys_addr_t pud_phys = early ?
+				__pa_symbol(kasan_early_shadow_pud)
+					: kasan_alloc_zeroed_page(node);
 		__pgd_populate(pgdp, pud_phys, PMD_TYPE_TABLE);
 	}
 
@@ -87,8 +98,11 @@ static void __init kasan_pte_populate(pmd_t *pmdp, unsigned long addr,
 	pte_t *ptep = kasan_pte_offset(pmdp, addr, node, early);
 
 	do {
-		phys_addr_t page_phys = early ? __pa_symbol(kasan_zero_page)
-					      : kasan_alloc_zeroed_page(node);
+		phys_addr_t page_phys = early ?
+				__pa_symbol(kasan_early_shadow_page)
+					: kasan_alloc_raw_page(node);
+		if (!early)
+			memset(__va(page_phys), KASAN_SHADOW_INIT, PAGE_SIZE);
 		next = addr + PAGE_SIZE;
 		set_pte(ptep, pfn_pte(__phys_to_pfn(page_phys), PAGE_KERNEL));
 	} while (ptep++, addr = next, addr != end && pte_none(READ_ONCE(*ptep)));
@@ -205,14 +219,14 @@ void __init kasan_init(void)
 	kasan_map_populate(kimg_shadow_start, kimg_shadow_end,
 			   early_pfn_to_nid(virt_to_pfn(lm_alias(_text))));
 
-	kasan_populate_zero_shadow((void *)KASAN_SHADOW_START,
-				   (void *)mod_shadow_start);
-	kasan_populate_zero_shadow((void *)kimg_shadow_end,
-				   kasan_mem_to_shadow((void *)PAGE_OFFSET));
+	kasan_populate_early_shadow((void *)KASAN_SHADOW_START,
+				    (void *)mod_shadow_start);
+	kasan_populate_early_shadow((void *)kimg_shadow_end,
+				    kasan_mem_to_shadow((void *)PAGE_OFFSET));
 
 	if (kimg_shadow_start > mod_shadow_end)
-		kasan_populate_zero_shadow((void *)mod_shadow_end,
-					   (void *)kimg_shadow_start);
+		kasan_populate_early_shadow((void *)mod_shadow_end,
+					    (void *)kimg_shadow_start);
 
 	for_each_memblock(memory, reg) {
 		void *start = (void *)__phys_to_virt(reg->base);
@@ -227,16 +241,19 @@ void __init kasan_init(void)
 	}
 
 	/*
-	 * KAsan may reuse the contents of kasan_zero_pte directly, so we
-	 * should make sure that it maps the zero page read-only.
+	 * KAsan may reuse the contents of kasan_early_shadow_pte directly,
+	 * so we should make sure that it maps the zero page read-only.
 	 */
 	for (i = 0; i < PTRS_PER_PTE; i++)
-		set_pte(&kasan_zero_pte[i],
-			pfn_pte(sym_to_pfn(kasan_zero_page), PAGE_KERNEL_RO));
+		set_pte(&kasan_early_shadow_pte[i],
+			pfn_pte(sym_to_pfn(kasan_early_shadow_page),
+				PAGE_KERNEL_RO));
 
-	memset(kasan_zero_page, 0, PAGE_SIZE);
+	memset(kasan_early_shadow_page, KASAN_SHADOW_INIT, PAGE_SIZE);
 	cpu_replace_ttbr1(lm_alias(swapper_pg_dir));
 
+	kasan_init_tags();
+
 	/* At this point kasan is fully initialized. Enable error messages */
 	init_task.kasan_depth = 0;
 	pr_info("KernelAddressSanitizer initialized\n");

arch/arm64/mm/mmu.c

@@ -1003,10 +1003,8 @@ int pmd_free_pte_page(pmd_t *pmdp, unsigned long addr)
 
 	pmd = READ_ONCE(*pmdp);
 
-	if (!pmd_present(pmd))
-		return 1;
 	if (!pmd_table(pmd)) {
-		VM_WARN_ON(!pmd_table(pmd));
+		VM_WARN_ON(1);
 		return 1;
 	}
 
@@ -1026,10 +1024,8 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr)
 
 	pud = READ_ONCE(*pudp);
 
-	if (!pud_present(pud))
-		return 1;
 	if (!pud_table(pud)) {
-		VM_WARN_ON(!pud_table(pud));
+		VM_WARN_ON(1);
 		return 1;
 	}
 
@@ -1047,6 +1043,11 @@ int pud_free_pmd_page(pud_t *pudp, unsigned long addr)
 	return 1;
 }
 
+int p4d_free_pud_page(p4d_t *p4d, unsigned long addr)
+{
+	return 0;	/* Don't attempt a block mapping */
+}
+
 #ifdef CONFIG_MEMORY_HOTPLUG
 int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
 		    bool want_memblock)

arch/arm64/mm/proc.S

@@ -47,6 +47,12 @@
 /* PTWs cacheable, inner/outer WBWA */
 #define TCR_CACHE_FLAGS	TCR_IRGN_WBWA | TCR_ORGN_WBWA
 
+#ifdef CONFIG_KASAN_SW_TAGS
+#define TCR_KASAN_FLAGS TCR_TBI1
+#else
+#define TCR_KASAN_FLAGS 0
+#endif
+
 #define MAIR(attr, mt)	((attr) << ((mt) * 8))
 
 /*
@@ -449,7 +455,7 @@ ENTRY(__cpu_setup)
 	 */
 	ldr	x10, =TCR_TxSZ(VA_BITS) | TCR_CACHE_FLAGS | TCR_SMP_FLAGS | \
 			TCR_TG_FLAGS | TCR_KASLR_FLAGS | TCR_ASID16 | \
-			TCR_TBI0 | TCR_A1
+			TCR_TBI0 | TCR_A1 | TCR_KASAN_FLAGS
 
 #ifdef CONFIG_ARM64_USER_VA_BITS_52
 	ldr_l		x9, vabits_user

arch/csky/mm/init.c

@@ -71,7 +71,7 @@ void free_initrd_mem(unsigned long start, unsigned long end)
 		ClearPageReserved(virt_to_page(start));
 		init_page_count(virt_to_page(start));
 		free_page(start);
-		totalram_pages++;
+		totalram_pages_inc();
 	}
 }
 #endif
@@ -88,7 +88,7 @@ void free_initmem(void)
 		ClearPageReserved(virt_to_page(addr));
 		init_page_count(virt_to_page(addr));
 		free_page(addr);
-		totalram_pages++;
+		totalram_pages_inc();
 		addr += PAGE_SIZE;
 	}
 

arch/ia64/mm/init.c

@@ -658,7 +658,7 @@ int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
 }
 
 #ifdef CONFIG_MEMORY_HOTREMOVE
-int arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
+int arch_remove_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap)
 {
 	unsigned long start_pfn = start >> PAGE_SHIFT;
 	unsigned long nr_pages = size >> PAGE_SHIFT;

arch/powerpc/mm/mem.c

@@ -139,7 +139,8 @@ int __meminit arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *
 }
 
 #ifdef CONFIG_MEMORY_HOTREMOVE
-int __meminit arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
+int __meminit arch_remove_memory(int nid, u64 start, u64 size,
+					struct vmem_altmap *altmap)
 {
 	unsigned long start_pfn = start >> PAGE_SHIFT;
 	unsigned long nr_pages = size >> PAGE_SHIFT;

arch/powerpc/platforms/pseries/cmm.c

@@ -208,7 +208,7 @@ static long cmm_alloc_pages(long nr)
 
 		pa->page[pa->index++] = addr;
 		loaned_pages++;
-		totalram_pages--;
+		totalram_pages_dec();
 		spin_unlock(&cmm_lock);
 		nr--;
 	}
@@ -247,7 +247,7 @@ static long cmm_free_pages(long nr)
 		free_page(addr);
 		loaned_pages--;
 		nr--;
-		totalram_pages++;
+		totalram_pages_inc();
 	}
 	spin_unlock(&cmm_lock);
 	cmm_dbg("End request with %ld pages unfulfilled\n", nr);
@@ -291,7 +291,7 @@ static void cmm_get_mpp(void)
 	int rc;
 	struct hvcall_mpp_data mpp_data;
 	signed long active_pages_target, page_loan_request, target;
-	signed long total_pages = totalram_pages + loaned_pages;
+	signed long total_pages = totalram_pages() + loaned_pages;
 	signed long min_mem_pages = (min_mem_mb * 1024 * 1024) / PAGE_SIZE;
 
 	rc = h_get_mpp(&mpp_data);
@@ -322,7 +322,7 @@ static void cmm_get_mpp(void)
 
 	cmm_dbg("delta = %ld, loaned = %lu, target = %lu, oom = %lu, totalram = %lu\n",
 		page_loan_request, loaned_pages, loaned_pages_target,
-		oom_freed_pages, totalram_pages);
+		oom_freed_pages, totalram_pages());
 }
 
 static struct notifier_block cmm_oom_nb = {
@@ -581,7 +581,7 @@ static int cmm_mem_going_offline(void *arg)
 			free_page(pa_curr->page[idx]);
 			freed++;
 			loaned_pages--;
-			totalram_pages++;
+			totalram_pages_inc();
 			pa_curr->page[idx] = pa_last->page[--pa_last->index];
 			if (pa_last->index == 0) {
 				if (pa_curr == pa_last)

arch/s390/mm/dump_pagetables.c

@@ -111,11 +111,12 @@ static void note_page(struct seq_file *m, struct pg_state *st,
 }
 
 #ifdef CONFIG_KASAN
-static void note_kasan_zero_page(struct seq_file *m, struct pg_state *st)
+static void note_kasan_early_shadow_page(struct seq_file *m,
+						struct pg_state *st)
 {
 	unsigned int prot;
 
-	prot = pte_val(*kasan_zero_pte) &
+	prot = pte_val(*kasan_early_shadow_pte) &
 		(_PAGE_PROTECT | _PAGE_INVALID | _PAGE_NOEXEC);
 	note_page(m, st, prot, 4);
 }
@@ -154,8 +155,8 @@ static void walk_pmd_level(struct seq_file *m, struct pg_state *st,
 	int i;
 
 #ifdef CONFIG_KASAN
-	if ((pud_val(*pud) & PAGE_MASK) == __pa(kasan_zero_pmd)) {
-		note_kasan_zero_page(m, st);
+	if ((pud_val(*pud) & PAGE_MASK) == __pa(kasan_early_shadow_pmd)) {
+		note_kasan_early_shadow_page(m, st);
 		return;
 	}
 #endif
@@ -185,8 +186,8 @@ static void walk_pud_level(struct seq_file *m, struct pg_state *st,
 	int i;
 
 #ifdef CONFIG_KASAN
-	if ((p4d_val(*p4d) & PAGE_MASK) == __pa(kasan_zero_pud)) {
-		note_kasan_zero_page(m, st);
+	if ((p4d_val(*p4d) & PAGE_MASK) == __pa(kasan_early_shadow_pud)) {
+		note_kasan_early_shadow_page(m, st);
 		return;
 	}
 #endif
@@ -215,8 +216,8 @@ static void walk_p4d_level(struct seq_file *m, struct pg_state *st,
 	int i;
 
 #ifdef CONFIG_KASAN
-	if ((pgd_val(*pgd) & PAGE_MASK) == __pa(kasan_zero_p4d)) {
-		note_kasan_zero_page(m, st);
+	if ((pgd_val(*pgd) & PAGE_MASK) == __pa(kasan_early_shadow_p4d)) {
+		note_kasan_early_shadow_page(m, st);
 		return;
 	}
 #endif

arch/s390/mm/init.c

@@ -59,7 +59,7 @@ static void __init setup_zero_pages(void)
 	order = 7;
 
 	/* Limit number of empty zero pages for small memory sizes */
-	while (order > 2 && (totalram_pages >> 10) < (1UL << order))
+	while (order > 2 && (totalram_pages() >> 10) < (1UL << order))
 		order--;
 
 	empty_zero_page = __get_free_pages(GFP_KERNEL | __GFP_ZERO, order);
@@ -242,7 +242,7 @@ int arch_add_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap,
 }
 
 #ifdef CONFIG_MEMORY_HOTREMOVE
-int arch_remove_memory(u64 start, u64 size, struct vmem_altmap *altmap)
+int arch_remove_memory(int nid, u64 start, u64 size, struct vmem_altmap *altmap)
 {
 	/*
 	 * There is no hardware or firmware interface which could trigger a

arch/s390/mm/kasan_init.c

@@ -107,7 +107,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
 			if (mode == POPULATE_ZERO_SHADOW &&
 			    IS_ALIGNED(address, PGDIR_SIZE) &&
 			    end - address >= PGDIR_SIZE) {
-				pgd_populate(&init_mm, pg_dir, kasan_zero_p4d);
+				pgd_populate(&init_mm, pg_dir,
+						kasan_early_shadow_p4d);
 				address = (address + PGDIR_SIZE) & PGDIR_MASK;
 				continue;
 			}
@@ -120,7 +121,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
 			if (mode == POPULATE_ZERO_SHADOW &&
 			    IS_ALIGNED(address, P4D_SIZE) &&
 			    end - address >= P4D_SIZE) {
-				p4d_populate(&init_mm, p4_dir, kasan_zero_pud);
+				p4d_populate(&init_mm, p4_dir,
+						kasan_early_shadow_pud);
 				address = (address + P4D_SIZE) & P4D_MASK;
 				continue;
 			}
@@ -133,7 +135,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
 			if (mode == POPULATE_ZERO_SHADOW &&
 			    IS_ALIGNED(address, PUD_SIZE) &&
 			    end - address >= PUD_SIZE) {
-				pud_populate(&init_mm, pu_dir, kasan_zero_pmd);
+				pud_populate(&init_mm, pu_dir,
+						kasan_early_shadow_pmd);
 				address = (address + PUD_SIZE) & PUD_MASK;
 				continue;
 			}
@@ -146,7 +149,8 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
 			if (mode == POPULATE_ZERO_SHADOW &&
 			    IS_ALIGNED(address, PMD_SIZE) &&
 			    end - address >= PMD_SIZE) {
-				pmd_populate(&init_mm, pm_dir, kasan_zero_pte);
+				pmd_populate(&init_mm, pm_dir,
+						kasan_early_shadow_pte);
 				address = (address + PMD_SIZE) & PMD_MASK;
 				continue;
 			}
@@ -188,7 +192,7 @@ static void __init kasan_early_vmemmap_populate(unsigned long address,
 				pte_val(*pt_dir) = __pa(page) | pgt_prot;
 				break;
 			case POPULATE_ZERO_SHADOW:
-				page = kasan_zero_page;
+				page = kasan_early_shadow_page;
 				pte_val(*pt_dir) = __pa(page) | pgt_prot_zero;
 				break;
 			}
@@ -256,14 +260,14 @@ void __init kasan_early_init(void)
 	unsigned long vmax;
 	unsigned long pgt_prot = pgprot_val(PAGE_KERNEL_RO);
 	pte_t pte_z;
-	pmd_t pmd_z = __pmd(__pa(kasan_zero_pte) | _SEGMENT_ENTRY);
-	pud_t pud_z = __pud(__pa(kasan_zero_pmd) | _REGION3_ENTRY);
-	p4d_t p4d_z = __p4d(__pa(kasan_zero_pud) | _REGION2_ENTRY);
+	pmd_t pmd_z = __pmd(__pa(kasan_early_shadow_pte) | _SEGMENT_ENTRY);
+	pud_t pud_z = __pud(__pa(kasan_early_shadow_pmd) | _REGION3_ENTRY);
+	p4d_t p4d_z = __p4d(__pa(kasan_early_shadow_pud) | _REGION2_ENTRY);
 
 	kasan_early_detect_facilities();
 	if (!has_nx)
 		pgt_prot &= ~_PAGE_NOEXEC;
-	pte_z = __pte(__pa(kasan_zero_page) | pgt_prot);
+	pte_z = __pte(__pa(kasan_early_shadow_page) | pgt_prot);
 
 	memsize = get_mem_detect_end();
 	if (!memsize)
@@ -292,10 +296,13 @@ void __init kasan_early_init(void)
 	}
 
 	/* init kasan zero shadow */
-	crst_table_init((unsigned long *)kasan_zero_p4d, p4d_val(p4d_z));
-	crst_table_init((unsigned long *)kasan_zero_pud, pud_val(pud_z));
-	crst_table_init((unsigned long *)kasan_zero_pmd, pmd_val(pmd_z));
-	memset64((u64 *)kasan_zero_pte, pte_val(pte_z), PTRS_PER_PTE);
+	crst_table_init((unsigned long *)kasan_early_shadow_p4d,
+				p4d_val(p4d_z));
+	crst_table_init((unsigned long *)kasan_early_shadow_pud,
+				pud_val(pud_z));
+	crst_table_init((unsigned long *)kasan_early_shadow_pmd,
+				pmd_val(pmd_z));
+	memset64((u64 *)kasan_early_shadow_pte, pte_val(pte_z), PTRS_PER_PTE);
 
 	shadow_alloc_size = memsize >> KASAN_SHADOW_SCALE_SHIFT;
 	pgalloc_low = round_up((unsigned long)_end, _SEGMENT_SIZE);

arch/sh/boards/board-apsh4a3a.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * ALPHAPROJECT AP-SH4A-3A Support.
  *
  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
  * Copyright (C) 2008  Yoshihiro Shimoda
  * Copyright (C) 2009  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/board-apsh4ad0a.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * ALPHAPROJECT AP-SH4AD-0A Support.
  *
  * Copyright (C) 2010 ALPHAPROJECT Co.,Ltd.
  * Copyright (C) 2010  Matt Fleming
  * Copyright (C) 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/board-edosk7760.c

+// SPDX-License-Identifier: GPL-2.0+
 /*
  * Renesas Europe EDOSK7760 Board Support
  *
  * Copyright (C) 2008 SPES Societa' Progettazione Elettronica e Software Ltd.
  * Author: Luca Santini <luca.santini@spesonline.com>
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License as published by
- * the Free Software Foundation; either version 2 of the License, or
- * (at your option) any later version.
- *
- * This program is distributed in the hope that it will be useful,
- * but WITHOUT ANY WARRANTY; without even the implied warranty of
- * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
- * GNU General Public License for more details.
- *
- * You should have received a copy of the GNU General Public License
- * along with this program; if not, write to the Free Software
- * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
  */
 #include <linux/init.h>
 #include <linux/types.h>

arch/sh/boards/board-espt.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Data Technology Inc. ESPT-GIGA board support
  *
  * Copyright (C) 2008, 2009 Renesas Solutions Corp.
  * Copyright (C) 2008, 2009 Nobuhiro Iwamatsu <iwamatsu.nobuhiro@renesas.com>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/board-magicpanelr2.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/sh/boards/magicpanel/setup.c
  *
  *  Copyright (C) 2007  Markus Brunner, Mark Jonas
  *
  *  Magic Panel Release 2 board setup
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>

arch/sh/boards/board-sh7757lcr.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas R0P7757LC0012RL Support.
  *
  * Copyright (C) 2009 - 2010  Renesas Solutions Corp.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #include <linux/init.h>

arch/sh/boards/board-sh7785lcr.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Technology Corp. R0P7785LC0011RL Support.
  *
  * Copyright (C) 2008  Yoshihiro Shimoda
  * Copyright (C) 2009  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/board-titan.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/titan/setup.c - Setup for Titan
  *
  *  Copyright (C) 2006  Jamie Lenehan
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>

arch/sh/boards/board-urquell.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Technology Corp. SH7786 Urquell Support.
  *
@@ -6,10 +7,6 @@
  *
  * Based on board-sh7785lcr.c
  * Copyright (C) 2008  Yoshihiro Shimoda
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/mach-ap325rxa/Makefile

+# SPDX-License-Identifier: GPL-2.0
 obj-y	 := setup.o sdram.o
 

arch/sh/boards/mach-ap325rxa/sdram.S

-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * AP325RXA sdram self/auto-refresh setup code
  *
  *  Copyright (C) 2009 Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #include <linux/sys.h>

arch/sh/boards/mach-cayman/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the Hitachi Cayman specific parts of the kernel
 #

arch/sh/boards/mach-cayman/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/mach-cayman/irq.c - SH-5 Cayman Interrupt Support
  *
  * This file handles the board specific parts of the Cayman interrupt system
  *
  * Copyright (C) 2002 Stuart Menefy
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/io.h>
 #include <linux/irq.h>

arch/sh/boards/mach-cayman/panic.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2003  Richard Curnow, SuperH UK Limited
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #include <linux/kernel.h>

arch/sh/boards/mach-cayman/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/mach-cayman/setup.c
  *
@@ -5,10 +6,6 @@
  *
  * Copyright (C) 2002  David J. Mckay & Benedict Gaster
  * Copyright (C) 2003 - 2007  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/io.h>

arch/sh/boards/mach-dreamcast/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the Sega Dreamcast specific parts of the kernel
 #

arch/sh/boards/mach-dreamcast/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/dreamcast/irq.c
  *
@@ -6,7 +7,6 @@
  * Copyright (c) 2001, 2002 M. R. Brown <mrbrown@0xd6.org>
  *
  * This file is part of the LinuxDC project (www.linuxdc.org)
- * Released under the terms of the GNU GPL v2.0
  */
 #include <linux/irq.h>
 #include <linux/io.h>

arch/sh/boards/mach-dreamcast/rtc.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/dreamcast/rtc.c
  *
@@ -5,9 +6,6 @@
  *
  * Copyright (c) 2001, 2002 M. R. Brown <mrbrown@0xd6.org>
  * Copyright (c) 2002 Paul Mundt <lethal@chaoticdreams.org>
- *
- * Released under the terms of the GNU GPL v2.0.
- *
  */
 
 #include <linux/time.h>

arch/sh/boards/mach-dreamcast/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/dreamcast/setup.c
  *
@@ -8,8 +9,6 @@
  *
  * This file is part of the LinuxDC project (www.linuxdc.org)
  *
- * Released under the terms of the GNU GPL v2.0.
- *
  * This file originally bore the message (with enclosed-$):
  *	Id: setup_dc.c,v 1.5 2001/05/24 05:09:16 mrbrown Exp
  *	SEGA Dreamcast support

arch/sh/boards/mach-ecovec24/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the R0P7724LC0011/21RL (EcoVec)
 #
@@ -6,4 +7,4 @@
 # for more details.
 #
 
-obj-y	 := setup.o sdram.o
\ No newline at end of file
+obj-y	 := setup.o sdram.o

arch/sh/boards/mach-ecovec24/sdram.S

-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * Ecovec24 sdram self/auto-refresh setup code
  *
  *  Copyright (C) 2009 Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #include <linux/sys.h>

arch/sh/boards/mach-ecovec24/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2009 Renesas Solutions Corp.
  *
  * Kuninori Morimoto <morimoto.kuninori@renesas.com>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <asm/clock.h>
 #include <asm/heartbeat.h>

arch/sh/boards/mach-highlander/irq-r7780mp.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Solutions Highlander R7780MP Support.
  *
  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
  * Copyright (C) 2006  Paul Mundt
  * Copyright (C) 2007  Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>

arch/sh/boards/mach-highlander/irq-r7780rp.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Solutions Highlander R7780RP-1 Support.
  *
  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
  * Copyright (C) 2006  Paul Mundt
  * Copyright (C) 2008  Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>

arch/sh/boards/mach-highlander/irq-r7785rp.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Solutions Highlander R7785RP Support.
  *
  * Copyright (C) 2002  Atom Create Engineering Co., Ltd.
  * Copyright (C) 2006 - 2008  Paul Mundt
  * Copyright (C) 2007  Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>

arch/sh/boards/mach-highlander/pinmux-r7785rp.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Copyright (C) 2008 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/gpio.h>

arch/sh/boards/mach-highlander/psw.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/renesas/r7780rp/psw.c
  *
  * push switch support for RDBRP-1/RDBREVRP-1 debug boards.
  *
  * Copyright (C) 2006  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/io.h>
 #include <linux/module.h>

arch/sh/boards/mach-highlander/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/renesas/r7780rp/setup.c
  *
@@ -8,10 +9,6 @@
  *
  * This contains support for the R7780RP-1, R7780MP, and R7785RP
  * Highlander modules.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/io.h>

arch/sh/boards/mach-hp6xx/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the HP6xx specific parts of the kernel
 #

arch/sh/boards/mach-hp6xx/hp6xx_apm.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * bios-less APM driver for hp680
  *
  * Copyright 2005 (c) Andriy Skulysh <askulysh@gmail.com>
  * Copyright 2008 (c) Kristoffer Ericson <kristoffer.ericson@gmail.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License.
  */
 #include <linux/module.h>
 #include <linux/kernel.h>

arch/sh/boards/mach-hp6xx/pm.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * hp6x0 Power Management Routines
  *
  * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
- *
- * This program is free software; you can redistribute it and/or
- * modify it under the terms of the GNU General Public License.
  */
 #include <linux/init.h>
 #include <linux/suspend.h>

arch/sh/boards/mach-hp6xx/pm_wakeup.S

-/*
- * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
+/* SPDX-License-Identifier: GPL-2.0
  *
+ * Copyright (c) 2006 Andriy Skulysh <askulsyh@gmail.com>
  */
 
 #include <linux/linkage.h>

arch/sh/boards/mach-hp6xx/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/sh/boards/hp6xx/setup.c
  *
  * Copyright (C) 2002 Andriy Skulysh
  * Copyright (C) 2007 Kristoffer Ericson <Kristoffer_e1@hotmail.com>
  *
- * May be copied or modified under the terms of the GNU General Public
- * License.  See linux/COPYING for more information.
- *
  * Setup code for HP620/HP660/HP680/HP690 (internal peripherials only)
  */
 #include <linux/types.h>

arch/sh/boards/mach-kfr2r09/Makefile

+# SPDX-License-Identifier: GPL-2.0
 obj-y	:= setup.o sdram.o
 ifneq ($(CONFIG_FB_SH_MOBILE_LCDC),)
 obj-y	+=  lcd_wqvga.o

arch/sh/boards/mach-kfr2r09/lcd_wqvga.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * KFR2R09 LCD panel support
  *
@@ -5,10 +6,6 @@
  *
  * Register settings based on the out-of-tree t33fb.c driver
  * Copyright (C) 2008 Lineo Solutions, Inc.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License. See the file COPYING in the main directory of this archive for
- * more details.
  */
 
 #include <linux/delay.h>

arch/sh/boards/mach-kfr2r09/sdram.S

-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * KFR2R09 sdram self/auto-refresh setup code
  *
  *  Copyright (C) 2009 Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #include <linux/sys.h>

arch/sh/boards/mach-kfr2r09/setup.c

@@ -25,7 +25,6 @@
 #include <linux/memblock.h>
 #include <linux/mfd/tmio.h>
 #include <linux/mmc/host.h>
-#include <linux/mtd/onenand.h>
 #include <linux/mtd/physmap.h>
 #include <linux/platform_data/lv5207lp.h>
 #include <linux/platform_device.h>
@@ -478,7 +477,7 @@ extern char kfr2r09_sdram_leave_end;
 
 static int __init kfr2r09_devices_setup(void)
 {
-	static struct clk *camera_clk;
+	struct clk *camera_clk;
 
 	/* register board specific self-refresh code */
 	sh_mobile_register_self_refresh(SUSP_SH_STANDBY | SUSP_SH_SF |

arch/sh/boards/mach-landisk/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for I-O DATA DEVICE, INC. "LANDISK Series"
 #

arch/sh/boards/mach-landisk/gio.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/landisk/gio.c - driver for landisk
  *
@@ -6,11 +7,6 @@
  *
  *   Copylight (C) 2006 kogiidena
  *   Copylight (C) 2002 Atom Create Engineering Co., Ltd. *
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  */
 #include <linux/module.h>
 #include <linux/init.h>

arch/sh/boards/mach-landisk/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/mach-landisk/irq.c
  *
@@ -8,10 +9,6 @@
  *
  * Copyright (C) 2001  Ian da Silva, Jeremy Siegel
  * Based largely on io_se.c.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #include <linux/init.h>

arch/sh/boards/mach-landisk/psw.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/landisk/psw.c
  *
@@ -5,10 +6,6 @@
  *
  * Copyright (C) 2006-2007  Paul Mundt
  * Copyright (C) 2007  kogiidena
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/io.h>
 #include <linux/init.h>

arch/sh/boards/mach-landisk/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/landisk/setup.c
  *
@@ -7,10 +8,6 @@
  * Copyright (C) 2002 Paul Mundt
  * Copylight (C) 2002 Atom Create Engineering Co., Ltd.
  * Copyright (C) 2005-2007 kogiidena
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/mach-lboxre2/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the L-BOX RE2 specific parts of the kernel
 # Copyright (c) 2007 Nobuhiro Iwamatsu

arch/sh/boards/mach-lboxre2/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/sh/boards/lboxre2/irq.c
  *
  * Copyright (C) 2007 Nobuhiro Iwamatsu
  *
  * NTT COMWARE L-BOX RE2 Support.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  */
 #include <linux/init.h>
 #include <linux/interrupt.h>

arch/sh/boards/mach-lboxre2/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/sh/boards/lbox/setup.c
  *
  * Copyright (C) 2007 Nobuhiro Iwamatsu
  *
  * NTT COMWARE L-BOX RE2 Support
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
- *
  */
 
 #include <linux/init.h>

arch/sh/boards/mach-microdev/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the SuperH MicroDev specific parts of the kernel
 #

arch/sh/boards/mach-microdev/fdc37c93xapm.c

+// SPDX-License-Identifier: GPL-2.0
 /*
- *
  * Setup for the SMSC FDC37C93xAPM
  *
  * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
@@ -7,9 +7,6 @@
  * Copyright (C) 2004, 2005 Paul Mundt
  *
  * SuperH SH4-202 MicroDev board support.
- *
- * May be copied or modified under the terms of the GNU General Public
- * License.  See linux/COPYING for more information.
  */
 #include <linux/init.h>
 #include <linux/ioport.h>

arch/sh/boards/mach-microdev/io.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/sh/boards/superh/microdev/io.c
  *
@@ -6,9 +7,6 @@
  * Copyright (C) 2004 Paul Mundt
  *
  * SuperH SH4-202 MicroDev board support.
- *
- * May be copied or modified under the terms of the GNU General Public
- * License.  See linux/COPYING for more information.
  */
 
 #include <linux/init.h>

arch/sh/boards/mach-microdev/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/superh/microdev/irq.c
  *
  * Copyright (C) 2003 Sean McGoogan (Sean.McGoogan@superh.com)
  *
  * SuperH SH4-202 MicroDev board support.
- *
- * May be copied or modified under the terms of the GNU General Public
- * License.  See linux/COPYING for more information.
  */
 
 #include <linux/init.h>

arch/sh/boards/mach-microdev/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/superh/microdev/setup.c
  *
@@ -6,9 +7,6 @@
  * Copyright (C) 2004, 2005 Paul Mundt
  *
  * SuperH SH4-202 MicroDev board support.
- *
- * May be copied or modified under the terms of the GNU General Public
- * License.  See linux/COPYING for more information.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/mach-migor/Makefile

+# SPDX-License-Identifier: GPL-2.0
 obj-y	 := setup.o sdram.o
 obj-$(CONFIG_SH_MIGOR_QVGA)	+=  lcd_qvga.o

arch/sh/boards/mach-migor/lcd_qvga.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Support for SuperH MigoR Quarter VGA LCD Panel
  *
@@ -5,10 +6,6 @@
  *
  * Based on lcd_powertip.c from Kenati Technologies Pvt Ltd.
  * Copyright (c) 2007 Ujjwal Pande <ujjwal@kenati.com>,
- *
- * This program is free software; you can redistribute it and/or modify
- * it under the terms of the GNU General Public License version 2 as
- * published by the Free Software Foundation.
  */
 
 #include <linux/delay.h>

arch/sh/boards/mach-migor/sdram.S

-/*
+/* SPDX-License-Identifier: GPL-2.0
+ *
  * Migo-R sdram self/auto-refresh setup code
  *
  *  Copyright (C) 2009 Magnus Damm
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 
 #include <linux/sys.h>

arch/sh/boards/mach-r2d/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the RTS7751R2D specific parts of the kernel
 #

arch/sh/boards/mach-r2d/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Technology Sales RTS7751R2D Support.
  *
  * Copyright (C) 2002 - 2006 Atom Create Engineering Co., Ltd.
  * Copyright (C) 2004 - 2007 Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/mach-rsk/Makefile

+# SPDX-License-Identifier: GPL-2.0
 obj-y				:= setup.o
 obj-$(CONFIG_SH_RSK7203)	+= devices-rsk7203.o
 obj-$(CONFIG_SH_RSK7264)	+= devices-rsk7264.o

arch/sh/boards/mach-rsk/devices-rsk7203.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Technology Europe RSK+ 7203 Support.
  *
  * Copyright (C) 2008 - 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/types.h>

arch/sh/boards/mach-rsk/devices-rsk7264.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * RSK+SH7264 Support.
  *
  * Copyright (C) 2012 Renesas Electronics Europe
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/types.h>

arch/sh/boards/mach-rsk/devices-rsk7269.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * RSK+SH7269 Support
  *
  * Copyright (C) 2012  Renesas Electronics Europe Ltd
  * Copyright (C) 2012  Phil Edworthy
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/types.h>

arch/sh/boards/mach-rsk/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Technology Europe RSK+ Support.
  *
  * Copyright (C) 2008 Paul Mundt
  * Copyright (C) 2008 Peter Griffin <pgriffin@mpc-data.co.uk>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/types.h>

arch/sh/boards/mach-sdk7780/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the SDK7780 specific parts of the kernel
 #

arch/sh/boards/mach-sdk7780/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/sh/boards/renesas/sdk7780/irq.c
  *
  * Renesas Technology Europe SDK7780 Support.
  *
  * Copyright (C) 2008  Nicholas Beck <nbeck@mpc-data.co.uk>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>

arch/sh/boards/mach-sdk7780/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * arch/sh/boards/renesas/sdk7780/setup.c
  *
  * Renesas Solutions SH7780 SDK Support
  * Copyright (C) 2008 Nicholas Beck <nbeck@mpc-data.co.uk>
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/types.h>

arch/sh/boards/mach-sdk7786/Makefile

+# SPDX-License-Identifier: GPL-2.0
 obj-y	:= fpga.o irq.o nmi.o setup.o
 
 obj-$(CONFIG_GPIOLIB)		+= gpio.o

arch/sh/boards/mach-sdk7786/fpga.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SDK7786 FPGA Support.
  *
  * Copyright (C) 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/io.h>

arch/sh/boards/mach-sdk7786/gpio.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SDK7786 FPGA USRGPIR Support.
  *
  * Copyright (C) 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/interrupt.h>

arch/sh/boards/mach-sdk7786/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SDK7786 FPGA IRQ Controller Support.
  *
  * Copyright (C) 2010  Matt Fleming
  * Copyright (C) 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/irq.h>
 #include <mach/fpga.h>

arch/sh/boards/mach-sdk7786/nmi.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SDK7786 FPGA NMI Support.
  *
  * Copyright (C) 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/kernel.h>

arch/sh/boards/mach-sdk7786/setup.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Renesas Technology Europe SDK7786 Support.
  *
  * Copyright (C) 2010  Matt Fleming
  * Copyright (C) 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/platform_device.h>

arch/sh/boards/mach-sdk7786/sram.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * SDK7786 FPGA SRAM Support.
  *
  * Copyright (C) 2010  Paul Mundt
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #define pr_fmt(fmt) KBUILD_MODNAME ": " fmt
 

arch/sh/boards/mach-se/7206/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the 7206 SolutionEngine specific parts of the kernel
 #

arch/sh/boards/mach-se/7343/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the 7343 SolutionEngine specific parts of the kernel
 #

arch/sh/boards/mach-se/7343/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * Hitachi UL SolutionEngine 7343 FPGA IRQ Support.
  *
@@ -6,10 +7,6 @@
  *
  * Based on linux/arch/sh/boards/se/7343/irq.c
  * Copyright (C) 2007  Nobuhiro Iwamatsu
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #define DRV_NAME "SE7343-FPGA"
 #define pr_fmt(fmt) DRV_NAME ": " fmt

arch/sh/boards/mach-se/770x/Makefile

+# SPDX-License-Identifier: GPL-2.0
 #
 # Makefile for the 770x SolutionEngine specific parts of the kernel
 #

arch/sh/boards/mach-se/7721/Makefile

+# SPDX-License-Identifier: GPL-2.0
 obj-y	 := setup.o irq.o

arch/sh/boards/mach-se/7721/irq.c

+// SPDX-License-Identifier: GPL-2.0
 /*
  * linux/arch/sh/boards/se/7721/irq.c
  *
  * Copyright (C) 2008  Renesas Solutions Corp.
- *
- * This file is subject to the terms and conditions of the GNU General Public
- * License.  See the file "COPYING" in the main directory of this archive
- * for more details.
  */
 #include <linux/init.h>
 #include <linux/irq.h>