linux-stable.git/arch/sh/include, branch v5.14.2

mm: rename pud_page_vaddr to pud_pgtable and make it return pmd_t *

2021-07-08T18:48:22+00:00

No functional change in this patch.

[aneesh.kumar@linux.ibm.com: fix]
  Link: https://lkml.kernel.org/r/87wnqtnb60.fsf@linux.ibm.com
[sfr@canb.auug.org.au: another fix]
  Link: https://lkml.kernel.org/r/20210619134410.89559-1-aneesh.kumar@linux.ibm.com

Link: https://lkml.kernel.org/r/20210615110859.320299-1-aneesh.kumar@linux.ibm.com
Link: https://lore.kernel.org/linuxppc-dev/CAHk-=wi+J+iodze9FtjM3Zi4j4OeS+qqbKxME9QN4roxPEXH9Q@mail.gmail.com/
Signed-off-by: Aneesh Kumar K.V 
Signed-off-by: Stephen Rothwell 
Cc: Christophe Leroy 
Cc: Hugh Dickins 
Cc: Joel Fernandes 
Cc: Kalesh Singh 
Cc: Kirill A. Shutemov 
Cc: Michael Ellerman 
Cc: Nicholas Piggin 
Cc: Stephen Rothwell 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

2021-07-02T19:43:40+00:00

Pull asm/unaligned.h unification from Arnd Bergmann:
 "Unify asm/unaligned.h around struct helper

  The get_unaligned()/put_unaligned() helpers are traditionally
  architecture specific, with the two main variants being the
  "access-ok.h" version that assumes unaligned pointer accesses always
  work on a particular architecture, and the "le-struct.h" version that
  casts the data to a byte aligned type before dereferencing, for
  architectures that cannot always do unaligned accesses in hardware.

  Based on the discussion linked below, it appears that the access-ok
  version is not realiable on any architecture, but the struct version
  probably has no downsides. This series changes the code to use the
  same implementation on all architectures, addressing the few
  exceptions separately"

Link: https://lore.kernel.org/lkml/75d07691-1e4f-741f-9852-38c0b4f520bc@synopsys.com/
Link: https://gcc.gnu.org/bugzilla/show_bug.cgi?id=100363
Link: https://lore.kernel.org/lkml/20210507220813.365382-14-arnd@kernel.org/
Link: git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic.git unaligned-rework-v2
Link: https://lore.kernel.org/lkml/CAHk-=whGObOKruA_bU3aPGZfoDqZM1_9wBkwREp0H0FgR-90uQ@mail.gmail.com/

* tag 'asm-generic-unaligned-5.14' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: simplify asm/unaligned.h
  asm-generic: uaccess: 1-byte access is always aligned
  netpoll: avoid put_unaligned() on single character
  mwifiex: re-fix for unaligned accesses
  apparmor: use get_unaligned() only for multi-byte words
  partitions: msdos: fix one-byte get_unaligned()
  asm-generic: unaligned always use struct helpers
  asm-generic: unaligned: remove byteshift helpers
  powerpc: use linux/unaligned/le_struct.h on LE power7
  m68k: select CONFIG_HAVE_EFFICIENT_UNALIGNED_ACCESS
  sh: remove unaligned access for sh4a
  openrisc: always use unaligned-struct header
  asm-generic: use asm-generic/unaligned.h for most architectures

Merge branch 'akpm' (patches from Andrew)

2021-07-02T19:08:10+00:00

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 : (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
  ...

mm/thp: define default pmd_pgtable()

2021-07-01T18:06:03+00:00

Currently most platforms define pmd_pgtable() as pmd_page() duplicating
the same code all over.  Instead just define a default value i.e
pmd_page() for pmd_pgtable() and let platforms override when required via
.  All the existing platform that override pmd_pgtable()
have been moved into their respective  header in order to
precede before the new generic definition.  This makes it much cleaner
with reduced code.

Link: https://lkml.kernel.org/r/1623646133-20306-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual 
Acked-by: Geert Uytterhoeven 
Acked-by: Mike Rapoport 
Cc: Nick Hu 
Cc: Richard Henderson 
Cc: Vineet Gupta 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Guo Ren 
Cc: Brian Cain 
Cc: Geert Uytterhoeven 
Cc: Michal Simek 
Cc: Thomas Bogendoerfer 
Cc: Ley Foon Tan 
Cc: Jonas Bonn 
Cc: Stefan Kristiansson 
Cc: Stafford Horne 
Cc: "James E.J. Bottomley" 
Cc: Michael Ellerman 
Cc: Christophe Leroy 
Cc: Paul Walmsley 
Cc: Palmer Dabbelt 
Cc: Heiko Carstens 
Cc: Yoshinori Sato 
Cc: "David S. Miller" 
Cc: Jeff Dike 
Cc: Thomas Gleixner 
Cc: Chris Zankel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

mm: define default value for FIRST_USER_ADDRESS

2021-07-01T18:06:02+00:00

Currently most platforms define FIRST_USER_ADDRESS as 0UL duplication the
same code all over.  Instead just define a generic default value (i.e 0UL)
for FIRST_USER_ADDRESS and let the platforms override when required.  This
makes it much cleaner with reduced code.

The default FIRST_USER_ADDRESS here would be skipped in 
when the given platform overrides its value via .

Link: https://lkml.kernel.org/r/1620615725-24623-1-git-send-email-anshuman.khandual@arm.com
Signed-off-by: Anshuman Khandual 
Acked-by: Geert Uytterhoeven 	[m68k]
Acked-by: Guo Ren 			[csky]
Acked-by: Stafford Horne 		[openrisc]
Acked-by: Catalin Marinas 	[arm64]
Acked-by: Mike Rapoport 
Acked-by: Palmer Dabbelt 	[RISC-V]
Cc: Richard Henderson 
Cc: Vineet Gupta 
Cc: Catalin Marinas 
Cc: Will Deacon 
Cc: Guo Ren 
Cc: Brian Cain 
Cc: Geert Uytterhoeven 
Cc: Michal Simek 
Cc: Thomas Bogendoerfer 
Cc: Ley Foon Tan 
Cc: Jonas Bonn 
Cc: Stefan Kristiansson 
Cc: Stafford Horne 
Cc: "James E.J. Bottomley" 
Cc: Michael Ellerman 
Cc: Christophe Leroy 
Cc: Paul Walmsley 
Cc: Heiko Carstens 
Cc: Yoshinori Sato 
Cc: "David S. Miller" 
Cc: Jeff Dike 
Cc: Thomas Gleixner 
Cc: Chris Zankel 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

Merge branch 'akpm' (patches from Andrew)

2021-06-30T00:29:11+00:00

Merge misc updates from Andrew Morton:
 "191 patches.

  Subsystems affected by this patch series: kthread, ia64, scripts,
  ntfs, squashfs, ocfs2, kernel/watchdog, and mm (gup, pagealloc, slab,
  slub, kmemleak, dax, debug, pagecache, gup, swap, memcg, pagemap,
  mprotect, bootmem, dma, tracing, vmalloc, kasan, initialization,
  pagealloc, and memory-failure)"

* emailed patches from Andrew Morton : (191 commits)
  mm,hwpoison: make get_hwpoison_page() call get_any_page()
  mm,hwpoison: send SIGBUS with error virutal address
  mm/page_alloc: split pcp->high across all online CPUs for cpuless nodes
  mm/page_alloc: allow high-order pages to be stored on the per-cpu lists
  mm: replace CONFIG_FLAT_NODE_MEM_MAP with CONFIG_FLATMEM
  mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA
  docs: remove description of DISCONTIGMEM
  arch, mm: remove stale mentions of DISCONIGMEM
  mm: remove CONFIG_DISCONTIGMEM
  m68k: remove support for DISCONTIGMEM
  arc: remove support for DISCONTIGMEM
  arc: update comment about HIGHMEM implementation
  alpha: remove DISCONTIGMEM and NUMA
  mm/page_alloc: move free_the_page
  mm/page_alloc: fix counting of managed_pages
  mm/page_alloc: improve memmap_pages dbg msg
  mm: drop SECTION_SHIFT in code comments
  mm/page_alloc: introduce vm.percpu_pagelist_high_fraction
  mm/page_alloc: limit the number of pages on PCP lists when reclaim is active
  mm/page_alloc: scale the number of pages that are batch freed
  ...

mm: replace CONFIG_NEED_MULTIPLE_NODES with CONFIG_NUMA

2021-06-29T17:53:55+00:00

After removal of DISCINTIGMEM the NEED_MULTIPLE_NODES and NUMA
configuration options are equivalent.

Drop CONFIG_NEED_MULTIPLE_NODES and use CONFIG_NUMA instead.

Done with

	$ sed -i 's/CONFIG_NEED_MULTIPLE_NODES/CONFIG_NUMA/' \
		$(git grep -wl CONFIG_NEED_MULTIPLE_NODES)
	$ sed -i 's/NEED_MULTIPLE_NODES/NUMA/' \
		$(git grep -wl NEED_MULTIPLE_NODES)

with manual tweaks afterwards.

[rppt@linux.ibm.com: fix arm boot crash]
  Link: https://lkml.kernel.org/r/YMj9vHhHOiCVN4BF@linux.ibm.com

Link: https://lkml.kernel.org/r/20210608091316.3622-9-rppt@kernel.org
Signed-off-by: Mike Rapoport 
Acked-by: Arnd Bergmann 
Acked-by: David Hildenbrand 
Cc: Geert Uytterhoeven 
Cc: Ivan Kokshaysky 
Cc: Jonathan Corbet 
Cc: Matt Turner 
Cc: Richard Henderson 
Cc: Vineet Gupta 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds

locking/atomic: sh: move to ARCH_ATOMIC

2021-05-26T11:20:52+00:00

We'd like all architectures to convert to ARCH_ATOMIC, as once all
architectures are converted it will be possible to make significant
cleanups to the atomics headers, and this will make it much easier to
generically enable atomic functionality (e.g. debug logic in the
instrumented wrappers).

As a step towards that, this patch migrates sh to ARCH_ATOMIC. The
arch code provides arch_{atomic,atomic64,xchg,cmpxchg}*(), and common
code wraps these with optional instrumentation to provide the regular
functions.

Signed-off-by: Mark Rutland 
Cc: Boqun Feng 
Cc: Peter Zijlstra 
Cc: Rich Felker 
Cc: Will Deacon 
Cc: Yoshinori Sato 
Signed-off-by: Peter Zijlstra (Intel) 
Link: https://lore.kernel.org/r/20210525140232.53872-30-mark.rutland@arm.com

sh: remove unaligned access for sh4a

2021-05-10T15:50:47+00:00

Unlike every other architecture, sh4a uses an inline asm implementation
for get_unaligned(). I have shown that this produces better object
code than the asm-generic version. However, there are very few users of
arch/sh/ overall, and most of those seem to use sh4 rather than sh4a CPU
cores, so it seems not worth keeping the complexity in the architecture
independent code.

Change over to the generic version to allow simplifying that in a
follow-up patch.

If there are sh4a users that want the best performance, it would probably
be best to add support for the movua instruction in gcc itself, as this
would not just help get_unaligned() callers but any code that accesses
a __packed variable in user space or kernel.

Signed-off-by: Arnd Bergmann

mm: remove xlate_dev_kmem_ptr()

2021-05-07T07:26:34+00:00

Since /dev/kmem has been removed, let's remove the xlate_dev_kmem_ptr()
leftovers.

Link: https://lkml.kernel.org/r/20210324102351.6932-3-david@redhat.com
Signed-off-by: David Hildenbrand 
Acked-by: Geert Uytterhoeven 
Acked-by: Michal Hocko 
Cc: Linus Torvalds 
Cc: Greg Kroah-Hartman 
Cc: Richard Henderson 
Cc: Ivan Kokshaysky 
Cc: Matt Turner 
Cc: Russell King 
Cc: Brian Cain 
Cc: Geert Uytterhoeven 
Cc: Thomas Bogendoerfer 
Cc: "James E.J. Bottomley" 
Cc: Helge Deller 
Cc: Michael Ellerman 
Cc: Benjamin Herrenschmidt 
Cc: Paul Mackerras 
Cc: Heiko Carstens 
Cc: Vasily Gorbik 
Cc: Christian Borntraeger 
Cc: Yoshinori Sato 
Cc: Rich Felker 
Cc: "David S. Miller" 
Cc: Arnd Bergmann 
Cc: David Hildenbrand 
Cc: Krzysztof Kozlowski 
Cc: Mikulas Patocka 
Cc: Luc Van Oostenryck 
Cc: Mike Rapoport 
Cc: Palmer Dabbelt 
Cc: Luis Chamberlain 
Cc: Greentime Hu 
Cc: Sebastian Andrzej Siewior 
Cc: Randy Dunlap 
Cc: Jiaxun Yang 
Cc: "Peter Zijlstra (Intel)" 
Cc: Christophe Leroy 
Cc: Gerald Schaefer 
Cc: Niklas Schnelle 
Cc: Pierre Morel 
Cc: Ingo Molnar 
Cc: Kuninori Morimoto 
Signed-off-by: Andrew Morton 
Signed-off-by: Linus Torvalds