Commit Graph

1509 Commits

Author SHA1 Message Date
Linus Torvalds
e7ded27593 percpu:
- Enable percpu page allocator for risc-v. There are risc-v
   configurations with sparse NUMA configurations and small vmalloc
   space causing dynamic percpu allocations to fail as the backing chunk
   stride is too far apart.
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Merge tag 'percpu-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu

Pull percpu updates from Dennis Zhou:
 "Enable percpu page allocator for RISC-V.

  There are RISC-V configurations with sparse NUMA configurations and
  small vmalloc space causing dynamic percpu allocations to fail as the
  backing chunk stride is too far apart"

* tag 'percpu-for-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/dennis/percpu:
  riscv: Enable pcpu page first chunk allocator
  mm: Introduce flush_cache_vmap_early()
2024-01-18 15:01:28 -08:00
Linus Torvalds
c299010061 asm-generic cleanups for 6.8
A series from Baoquan He cleans up the asm-generic/io.h to remove the
 ioremap_uc() definition from everything except x86, which still needs it
 for pre-PAT systems. This series notably contains a patch from Jiaxun Yang
 that converts MIPS to use asm-generic/io.h like every other architecture
 does, enabling future cleanups.
 
 Some of my own patches fix -Wmissing-prototype warnings in architecture
 specific code across several architectures. This is now needed as the
 warning is enabled by default. There are still some remaining warnings
 in minor platforms, but the series should catch most of the widely used
 ones make them more consistent with one another.
 
 David McKay fixes a bug in __generic_cmpxchg_local() when this is used
 on 64-bit architectures. This could currently only affect parisc64
 and sparc64.
 
 Additional cleanups address from Linus Walleij, Uwe Kleine-König,
 Thomas Huth, and Kefeng Wang help reduce unnecessary inconsistencies
 between architectures.
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Merge tag 'asm-generic-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic

Pull asm-generic cleanups from Arnd Bergmann:
 "A series from Baoquan He cleans up the asm-generic/io.h to remove the
  ioremap_uc() definition from everything except x86, which still needs
  it for pre-PAT systems. This series notably contains a patch from
  Jiaxun Yang that converts MIPS to use asm-generic/io.h like every
  other architecture does, enabling future cleanups.

  Some of my own patches fix -Wmissing-prototype warnings in
  architecture specific code across several architectures. This is now
  needed as the warning is enabled by default. There are still some
  remaining warnings in minor platforms, but the series should catch
  most of the widely used ones make them more consistent with one
  another.

  David McKay fixes a bug in __generic_cmpxchg_local() when this is used
  on 64-bit architectures. This could currently only affect parisc64 and
  sparc64.

  Additional cleanups address from Linus Walleij, Uwe Kleine-König,
  Thomas Huth, and Kefeng Wang help reduce unnecessary inconsistencies
  between architectures"

* tag 'asm-generic-6.8' of git://git.kernel.org/pub/scm/linux/kernel/git/arnd/asm-generic:
  asm-generic: Fix 32 bit __generic_cmpxchg_local
  Hexagon: Make pfn accessors statics inlines
  ARC: mm: Make virt_to_pfn() a static inline
  mips: remove extraneous asm-generic/iomap.h include
  sparc: Use $(kecho) to announce kernel images being ready
  arm64: vdso32: Define BUILD_VDSO32_64 to correct prototypes
  csky: fix arch_jump_label_transform_static override
  arch: add do_page_fault prototypes
  arch: add missing prepare_ftrace_return() prototypes
  arch: vdso: consolidate gettime prototypes
  arch: include linux/cpu.h for trap_init() prototype
  arch: fix asm-offsets.c building with -Wmissing-prototypes
  arch: consolidate arch_irq_work_raise prototypes
  hexagon: Remove CONFIG_HEXAGON_ARCH_VERSION from uapi header
  asm/io: remove unnecessary xlate_dev_mem_ptr() and unxlate_dev_mem_ptr()
  mips: io: remove duplicated codes
  arch/*/io.h: remove ioremap_uc in some architectures
  mips: add <asm-generic/io.h> including
2024-01-10 18:13:44 -08:00
Alexandre Ghiti
7a92fc8b4d mm: Introduce flush_cache_vmap_early()
The pcpu setup when using the page allocator sets up a new vmalloc
mapping very early in the boot process, so early that it cannot use the
flush_cache_vmap() function which may depend on structures not yet
initialized (for example in riscv, we currently send an IPI to flush
other cpus TLB).

But on some architectures, we must call flush_cache_vmap(): for example,
in riscv, some uarchs can cache invalid TLB entries so we need to flush
the new established mapping to avoid taking an exception.

So fix this by introducing a new function flush_cache_vmap_early() which
is called right after setting the new page table entry and before
accessing this new mapping. This new function implements a local flush
tlb on riscv and is no-op for other architectures (same as today).

Signed-off-by: Alexandre Ghiti <alexghiti@rivosinc.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Dennis Zhou <dennis@kernel.org>
2023-12-14 00:23:17 -08:00
Baoquan He
d70c27b728 sh, kexec: fix the incorrect ifdeffery and dependency of CONFIG_KEXEC
The select of KEXEC for CRASH_DUMP in kernel/Kconfig.kexec will be
dropped, then compiling errors will be triggered if below config
items are set:

===
CONFIG_CRASH_CORE=y
CONFIG_KEXEC_CORE=y
CONFIG_CRASH_DUMP=y
===

Here, change the dependency of building kexec_core related object files,
and the ifdeffery on SuperH from CONFIG_KEXEC to CONFIG_KEXEC_CORE.

Link: https://lkml.kernel.org/r/20231208073036.7884-5-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: Eric DeVolder <eric_devolder@yahoo.com>
Cc: Ignat Korchagin <ignat@cloudflare.com>
Cc: kernel test robot <lkp@intel.com>
Cc: Stephen Rothwell <sfr@canb.auug.org.au>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-12-12 17:20:18 -08:00
Arnd Bergmann
0734f5c7eb Merge branch 'asm-generic-prototypes' into asm-generic
As part of my quest to enable -Wmissing-prototypes by default,
these patches clean up some of the prototypes that are needed by all
architectures but are handled inconsistently.

The duplicate prototypes are moved into common code, which helps both
to clean up the existing warnings and simplifies the logic.

* asm-generic-prototypes:
  arm64: vdso32: Define BUILD_VDSO32_64 to correct prototypes
  csky: fix arch_jump_label_transform_static override
  arch: add do_page_fault prototypes
  arch: add missing prepare_ftrace_return() prototypes
  arch: vdso: consolidate gettime prototypes
  arch: include linux/cpu.h for trap_init() prototype
  arch: fix asm-offsets.c building with -Wmissing-prototypes
  arch: consolidate arch_irq_work_raise prototypes
2023-11-28 18:25:37 +01:00
Arnd Bergmann
23f8c1823b arch: add do_page_fault prototypes
do_page_fault() is missing a declaration on a couple of architectures:

arch/alpha/mm/fault.c:85:1: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
arch/csky/mm/fault.c:187:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
arch/mips/mm/fault.c:323:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
arch/nios2/mm/fault.c:43:17: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]
arch/sh/mm/fault.c:389:27: error: no previous prototype for 'do_page_fault' [-Werror=missing-prototypes]

Since the calling conventions are architecture specific here,
add separate prototypes for each one.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-11-23 11:32:32 +01:00
Kefeng Wang
3cd944590d asm/io: remove unnecessary xlate_dev_mem_ptr() and unxlate_dev_mem_ptr()
The asm-generic/io.h already has default definition, remove unnecessary
arch's defination.

Cc: Richard Henderson <richard.henderson@linaro.org>
Cc: Ivan Kokshaysky <ink@jurassic.park.msu.ru>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Brian Cain <bcain@quicinc.com>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Stanislav Kinsburskii <stanislav.kinsburskii@gmail.com>
Signed-off-by: Kefeng Wang <wangkefeng.wang@huawei.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-11-23 10:37:40 +01:00
Baoquan He
026246f114 arch/*/io.h: remove ioremap_uc in some architectures
ioremap_uc() is only meaningful on old x86-32 systems with the PAT
extension, and on ia64 with its slightly unconventional ioremap()
behavior. So remove the ioremap_uc() definition in architecutures
other than x86 and ia64. These architectures all have asm-generic/io.h
included and will have the default ioremap_uc() definition which
returns NULL.

This changes the existing behaviour, while no need to worry about
any breakage because in the only callsite of ioremap_uc(), code
has been adjusted to eliminate the impact. Please see
atyfb_setup_generic() of drivers/video/fbdev/aty/atyfb_base.c.

If any new invocation of ioremap_uc() need be added, please consider
using ioremap() intead or adding a ARCH specific version if necessary.

Signed-off-by: Baoquan He <bhe@redhat.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: Michael Ellerman <mpe@ellerman.id.au> (powerpc)
Acked-by: Helge Deller <deller@gmx.de>  # parisc
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de> (SuperH)
Cc: linux-alpha@vger.kernel.org
Cc: linux-hexagon@vger.kernel.org
Cc: linux-m68k@lists.linux-m68k.org
Cc: linux-mips@vger.kernel.org
Cc: linux-parisc@vger.kernel.org
Cc: linuxppc-dev@lists.ozlabs.org
Cc: linux-sh@vger.kernel.org
Cc: sparclinux@vger.kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2023-11-23 10:32:52 +01:00
Arnd Bergmann
abc28463c8 kprobes: unify kprobes_exceptions_nofify() prototypes
Most architectures that support kprobes declare this function in their
own asm/kprobes.h header and provide an override, but some are missing
the prototype, which causes a warning for the __weak stub implementation:

kernel/kprobes.c:1865:12: error: no previous prototype for 'kprobe_exceptions_notify' [-Werror=missing-prototypes]
 1865 | int __weak kprobe_exceptions_notify(struct notifier_block *self,

Move the prototype into linux/kprobes.h so it is visible to all
the definitions.

Link: https://lore.kernel.org/all/20231108125843.3806765-4-arnd@kernel.org/

Acked-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
2023-11-10 19:59:05 +09:00
Masami Hiramatsu
63f1ee2061 locking/atomic: sh: Use generic_cmpxchg_local for arch_cmpxchg_local()
Use __generic_cmpxchg_local() for arch_cmpxchg_local() implementation
on SH architecture because it does not implement arch_cmpxchg_local().

Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/oe-kbuild-all/202310241310.Ir5uukOG-lkp@intel.com/
Signed-off-by: Masami Hiramatsu (Google) <mhiramat@kernel.org>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/169824660459.24340.14614817132696360531.stgit@devnote2
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-11-02 10:13:12 +01:00
Arnd Bergmann
4c02add1d9 sh: machvec: Remove custom ioport_{un,}map()
These functions were only used on the microdev board that is now gone,
so remove them to simplify the ioport handling. This could be further
simplified to use the generic I/O port accessors now.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230914155523.3839811-4-arnd@kernel.org
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-10-25 16:50:30 +02:00
Arnd Bergmann
3ca64d0669 sh: Remove stale microdev board
This board was an early prototype platform for early SH4 CPUs and related
to the already removed SH5 cayman platform.

The microdev board itself has been kept in the tree for this long despite
being in a bad shape even 20 years ago when it got merged, with no working
PCI support and ugly workarounds for its I/O port implementation that
try to emulate PC style peripheral access despite being quite different
in reality.

As far as I can tell, the ethernet, display, USB and PCI devices on it
already broke at some point (afbb9d8d52, 46bc858720), so I think
we can just removeit entirely.

Link: https://lore.kernel.org/lkml/09094baf-dadf-4bce-9f63-f2a1f255f9a8@app.fastmail.com/
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230914155523.3839811-1-arnd@kernel.org
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-10-25 16:48:06 +02:00
Linus Torvalds
df57721f9a Add x86 shadow stack support
Convert IBT selftest to asm to fix objtool warning
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Merge tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull x86 shadow stack support from Dave Hansen:
 "This is the long awaited x86 shadow stack support, part of Intel's
  Control-flow Enforcement Technology (CET).

  CET consists of two related security features: shadow stacks and
  indirect branch tracking. This series implements just the shadow stack
  part of this feature, and just for userspace.

  The main use case for shadow stack is providing protection against
  return oriented programming attacks. It works by maintaining a
  secondary (shadow) stack using a special memory type that has
  protections against modification. When executing a CALL instruction,
  the processor pushes the return address to both the normal stack and
  to the special permission shadow stack. Upon RET, the processor pops
  the shadow stack copy and compares it to the normal stack copy.

  For more information, refer to the links below for the earlier
  versions of this patch set"

Link: https://lore.kernel.org/lkml/20220130211838.8382-1-rick.p.edgecombe@intel.com/
Link: https://lore.kernel.org/lkml/20230613001108.3040476-1-rick.p.edgecombe@intel.com/

* tag 'x86_shstk_for_6.6-rc1' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (47 commits)
  x86/shstk: Change order of __user in type
  x86/ibt: Convert IBT selftest to asm
  x86/shstk: Don't retry vm_munmap() on -EINTR
  x86/kbuild: Fix Documentation/ reference
  x86/shstk: Move arch detail comment out of core mm
  x86/shstk: Add ARCH_SHSTK_STATUS
  x86/shstk: Add ARCH_SHSTK_UNLOCK
  x86: Add PTRACE interface for shadow stack
  selftests/x86: Add shadow stack test
  x86/cpufeatures: Enable CET CR4 bit for shadow stack
  x86/shstk: Wire in shadow stack interface
  x86: Expose thread features in /proc/$PID/status
  x86/shstk: Support WRSS for userspace
  x86/shstk: Introduce map_shadow_stack syscall
  x86/shstk: Check that signal frame is shadow stack mem
  x86/shstk: Check that SSP is aligned on sigreturn
  x86/shstk: Handle signals for shadow stack
  x86/shstk: Introduce routines modifying shstk
  x86/shstk: Handle thread shadow stack
  x86/shstk: Add user-mode shadow stack support
  ...
2023-08-31 12:20:12 -07:00
Matthew Wilcox (Oracle)
203b7b6aad mm: rationalise flush_icache_pages() and flush_icache_page()
Move the default (no-op) implementation of flush_icache_pages() to
<linux/cacheflush.h> from <asm-generic/cacheflush.h>.  Remove the
flush_icache_page() wrapper from each architecture into
<linux/cacheflush.h>.

Link: https://lkml.kernel.org/r/20230802151406.3735276-32-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-24 16:20:25 -07:00
Matthew Wilcox (Oracle)
157efa2904 sh: implement the new page table range API
Add PFN_PTE_SHIFT, update_mmu_cache_range(), flush_dcache_folio() and
flush_icache_pages().  Change the PG_dcache_clean flag from being per-page
to per-folio.  Flush the entire folio containing the pages in
flush_icache_pages() for ease of implementation.

Link: https://lkml.kernel.org/r/20230802151406.3735276-25-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) <willy@infradead.org>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-24 16:20:23 -07:00
Vishal Moola (Oracle)
bb3be38853 sh: convert pte_free_tlb() to use ptdescs
Part of the conversions to replace pgtable constructor/destructors with
ptdesc equivalents.  Also cleans up some spacing issues.

Link: https://lkml.kernel.org/r/20230807230513.102486-28-vishal.moola@gmail.com
Signed-off-by: Vishal Moola (Oracle) <vishal.moola@gmail.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Acked-by: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Claudio Imbrenda <imbrenda@linux.ibm.com>
Cc: Dave Hansen <dave.hansen@linux.intel.com>
Cc: David Hildenbrand <david@redhat.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Guo Ren <guoren@kernel.org>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Hugh Dickins <hughd@google.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Palmer Dabbelt <palmer@rivosinc.com>
Cc: Paul Walmsley <paul.walmsley@sifive.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-21 13:37:57 -07:00
Baoquan He
0453c9a780 sh: mm: convert to GENERIC_IOREMAP
By taking GENERIC_IOREMAP method, the generic generic_ioremap_prot(),
generic_iounmap(), and their generic wrapper ioremap_prot(), ioremap() and
iounmap() are all visible and available to arch.  Arch needs to provide
wrapper functions to override the generic versions if there's arch
specific handling in its ioremap_prot(), ioremap() or iounmap().  This
change will simplify implementation by removing duplicated code with
generic_ioremap_prot() and generic_iounmap(), and has the equivalent
functioality as before.

Here, add wrapper functions ioremap_prot() and iounmap() for SuperH's
special operation when ioremap() and iounmap().

Link: https://lkml.kernel.org/r/20230706154520.11257-13-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brian Cain <bcain@quicinc.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-18 10:12:34 -07:00
Baoquan He
b94692e84d sh: add <asm-generic/io.h> including
In <asm-generic/io.h>, it provides a generic implementation of all
I/O accessors.

For some port|mm io functions, SuperH has its own implementation in
arch/sh/kernel/iomap.c and arch/sh/include/asm/io_noioport.h.  These will
conflict with those in <asm-generic/io.h> and cause compiling error. 
Hence add macro definitions to ensure that the SuperH version of them will
override the generic version.

[arnd@arndb.de: fix asm-generic/io.h inclusion]
  Link: https://lkml.kernel.org/r/20230802141658.2064864-1-arnd@kernel.org
Link: https://lkml.kernel.org/r/20230706154520.11257-12-bhe@redhat.com
Signed-off-by: Baoquan He <bhe@redhat.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: Alexander Gordeev <agordeev@linux.ibm.com>
Cc: Arnd Bergmann <arnd@arndb.de>
Cc: Brian Cain <bcain@quicinc.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christian Borntraeger <borntraeger@linux.ibm.com>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: Christoph Hellwig <hch@lst.de>
Cc: Chris Zankel <chris@zankel.net>
Cc: David Laight <David.Laight@ACULAB.COM>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Gerald Schaefer <gerald.schaefer@linux.ibm.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: "James E.J. Bottomley" <James.Bottomley@HansenPartnership.com>
Cc: Jonas Bonn <jonas@southpole.se>
Cc: Kefeng Wang <wangkefeng.wang@huawei.com>
Cc: Matthew Wilcox <willy@infradead.org>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Mike Rapoport (IBM) <rppt@kernel.org>
Cc: Nathan Chancellor <nathan@kernel.org>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Niklas Schnelle <schnelle@linux.ibm.com>
Cc: Stafford Horne <shorne@gmail.com>
Cc: Stefan Kristiansson <stefan.kristiansson@saunalahti.fi>
Cc: Sven Schnelle <svens@linux.ibm.com>
Cc: Vasily Gorbik <gor@linux.ibm.com>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-08-18 10:12:34 -07:00
Linus Torvalds
9350cd0190 sh fixes for v6.5
- sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ
 - sh: mach-dreamcast: Handle virq offset in cascaded IRQ demux
 - sh: mach-highlander: Handle virq offset in cascaded IRL demux
 - sh: mach-r2d: Handle virq offset in cascaded IRL demux
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Merge tag 'sh-for-v6.5-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh fixes from John Paul Adrian Glaubitz:
 "The sh updates introduced multiple regressions.

  In particular, the change a8ac296114 ("sh: Avoid using IRQ0 on SH3
  and SH4") causes several boards to hang during boot due to incorrect
  IRQ numbers.

  Geert Uytterhoeven has contributed patches that handle the virq offset
  in the IRQ code for the dreamcast, highlander and r2d boards while
  Artur Rojek has contributed a patch which handles the virq offset for
  the hd64461 companion chip"

* tag 'sh-for-v6.5-tag2' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ
  sh: mach-dreamcast: Handle virq offset in cascaded IRQ demux
  sh: mach-highlander: Handle virq offset in cascaded IRL demux
  sh: mach-r2d: Handle virq offset in cascaded IRL demux
2023-07-13 13:34:00 -07:00
Artur Rojek
7c28a35e19 sh: hd64461: Handle virq offset for offchip IRQ base and HD64461 IRQ
A recent change to start counting SuperH IRQ #s from 16 breaks support
for the Hitachi HD64461 companion chip.

Move the offchip IRQ base and HD64461 IRQ # by 16 in order to
accommodate for the new virq numbering rules.

Fixes: a8ac296114 ("sh: Avoid using IRQ0 on SH3 and SH4")
Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230710233132.69734-1-contact@artur-rojek.eu
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-07-13 08:37:53 +02:00
Rick Edgecombe
2f0584f3f4 mm: Rename arch pte_mkwrite()'s to pte_mkwrite_novma()
The x86 Shadow stack feature includes a new type of memory called shadow
stack. This shadow stack memory has some unusual properties, which requires
some core mm changes to function properly.

One of these unusual properties is that shadow stack memory is writable,
but only in limited ways. These limits are applied via a specific PTE
bit combination. Nevertheless, the memory is writable, and core mm code
will need to apply the writable permissions in the typical paths that
call pte_mkwrite(). The goal is to make pte_mkwrite() take a VMA, so
that the x86 implementation of it can know whether to create regular
writable or shadow stack mappings.

But there are a couple of challenges to this. Modifying the signatures of
each arch pte_mkwrite() implementation would be error prone because some
are generated with macros and would need to be re-implemented. Also, some
pte_mkwrite() callers operate on kernel memory without a VMA.

So this can be done in a three step process. First pte_mkwrite() can be
renamed to pte_mkwrite_novma() in each arch, with a generic pte_mkwrite()
added that just calls pte_mkwrite_novma(). Next callers without a VMA can
be moved to pte_mkwrite_novma(). And lastly, pte_mkwrite() and all callers
can be changed to take/pass a VMA.

Start the process by renaming pte_mkwrite() to pte_mkwrite_novma() and
adding the pte_mkwrite() wrapper in linux/pgtable.h. Apply the same
pattern for pmd_mkwrite(). Since not all archs have a pmd_mkwrite_novma(),
create a new arch config HAS_HUGE_PAGE that can be used to tell if
pmd_mkwrite() should be defined. Otherwise in the !HAS_HUGE_PAGE cases the
compiler would not be able to find pmd_mkwrite_novma().

No functional change.

Suggested-by: Linus Torvalds <torvalds@linuxfoundation.org>
Signed-off-by: Rick Edgecombe <rick.p.edgecombe@intel.com>
Signed-off-by: Dave Hansen <dave.hansen@linux.intel.com>
Reviewed-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org>
Acked-by: David Hildenbrand <david@redhat.com>
Link: https://lore.kernel.org/lkml/CAHk-=wiZjSu7c9sFYZb3q04108stgHff2wfbokGCCgW7riz+8Q@mail.gmail.com/
Link: https://lore.kernel.org/all/20230613001108.3040476-2-rick.p.edgecombe%40intel.com
2023-07-11 14:10:56 -07:00
Linus Torvalds
c17414a273 sh updates for v6.5
- sh: Provide unxlate_dev_mem_ptr() in asm/io.h
 - sh: dma: Correct the number of DMA channels for SH7709
 - sh: dma: Drop incorrect SH_DMAC_BASE1 definition for SH4
 - sh: dma: Fix DMA channel offset calculation
 - sh: Remove compiler flag duplication
 - sh: Refactor header include path addition
 - sh: Move build rule for cchips/hd6446x/ to arch/sh/Kbuild
 - sh: Fix -Wmissing-include-dirs warnings for various platforms
 - sh: Avoid using IRQ0 on SH3 and SH4
 - sh: j2: Use ioremap() to translate device tree address into kernel memory
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Merge tag 'sh-for-v6.5-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from Adrian Glaubitz:
 "Fix a compiler warning in the J2 probing code and a fix by Sergey
  Shtylyov to avoid using IRQ0 on SH3 and SH4 targets. Masahiro Yamada
  made some clean-up in the build system to address reports by the 0day
  bot.

  The most notable changes come from Artur Rojek who addressed a number
  of issues in the DMA code, in particular a fix for the DMA channel
  offset calculation that was introduced in in 7f47c7189b ("sh: dma:
  More legacy cpu dma chainsawing.") in 2012!

  Together with another change to correct the number of DMA channels for
  each SuperH SoC according to specification, Artur's series unbreaks
  the kernel on the SH7709 SoC allowing Linux to boot on the HP Jornada
  680 handheld again.

  Summary:

   - Provide unxlate_dev_mem_ptr() in asm/io.h

   - dma: Correct the number of DMA channels for SH7709

   - dma: Drop incorrect SH_DMAC_BASE1 definition for SH4

   - dma: Fix DMA channel offset calculation

   - Remove compiler flag duplication

   - Refactor header include path addition

   - Move build rule for cchips/hd6446x/ to arch/sh/Kbuild

   - Fix -Wmissing-include-dirs warnings for various platforms

   - Avoid using IRQ0 on SH3 and SH4

   - j2: Use ioremap() to translate device tree address into kernel
     memory"

* tag 'sh-for-v6.5-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: Provide unxlate_dev_mem_ptr() in asm/io.h
  sh: dma: Correct the number of DMA channels for SH7709
  sh: dma: Drop incorrect SH_DMAC_BASE1 definition for SH4
  sh: dma: Fix DMA channel offset calculation
  sh: Remove compiler flag duplication
  sh: Refactor header include path addition
  sh: Move build rule for cchips/hd6446x/ to arch/sh/Kbuild
  sh: Fix -Wmissing-include-dirs warnings for various platforms
  sh: Avoid using IRQ0 on SH3 and SH4
  sh: j2: Use ioremap() to translate device tree address into kernel memory
2023-07-05 21:45:32 -07:00
Guenter Roeck
7497840d46 sh: Provide unxlate_dev_mem_ptr() in asm/io.h
The unxlate_dev_mem_ptr() function has no prototype on the sh architecture
which does not include asm-generic/io.h. This results in the following
build failure:

drivers/char/mem.c: In function 'read_mem':
drivers/char/mem.c:164:25: error: implicit declaration of function 'unxlate_dev_mem_ptr'

This compile error is now seen because commit 99b619b37a ("mips: provide
unxlate_dev_mem_ptr() in asm/io.h") removed the weak function which was
previously in place to handle this problem.

Add a trivial macro to the sh header to provide the now missing dummy
function.

Fixes: 99b619b37a ("mips: provide unxlate_dev_mem_ptr() in asm/io.h")
Cc: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Guenter Roeck <linux@roeck-us.net>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230704190144.2888679-1-linux@roeck-us.net
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-07-05 19:04:51 +02:00
Artur Rojek
d2f4a190b1 sh: dma: Drop incorrect SH_DMAC_BASE1 definition for SH4
None of the supported SH4 family SoCs features a second DMAC module. As
this definition negatively impacts DMA channel calculation for the above
targets, remove it from the code.

Signed-off-by: Artur Rojek <contact@artur-rojek.eu>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/20230527164452.64797-3-contact@artur-rojek.eu
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-07-05 18:55:25 +02:00
Linus Torvalds
1b722407a1 drm changes for 6.5-rc1:
core:
 - replace strlcpy with strscpy
 - EDID changes to support further conversion to struct drm_edid
 - Move i915 DSC parameter code to common DRM helpers
 - Add Colorspace functionality
 
 aperture:
 - ignore framebuffers with non-primary devices
 
 fbdev:
 - use fbdev i/o helpers
 - add Kconfig options for fb_ops helpers
 - use new fb io helpers directly in drivers
 
 sysfs:
 - export DRM connector ID
 
 scheduler:
 - Avoid an infinite loop
 
 ttm:
 - store function table in .rodata
 - Add query for TTM mem limit
 - Add NUMA awareness to pools
 - Export ttm_pool_fini()
 
 bridge:
 - fsl-ldb: support i.MX6SX
 - lt9211, lt9611: remove blanking packets
 - tc358768: implement input bus formats, devm cleanups
 - ti-snd65dsi86: implement wait_hpd_asserted
 - analogix: fix endless probe loop
 - samsung-dsim: support swapped clock, fix enabling, support var clock
 - display-connector: Add support for external power supply
 - imx: Fix module linking
 - tc358762: Support reset GPIO
 
 panel:
 - nt36523: Support Lenovo J606F
 - st7703: Support Anbernic RG353V-V2
 - InnoLux G070ACE-L01 support
 - boe-tv101wum-nl6: Improve initialization
 - sharp-ls043t1le001: Mode fixes
 - simple: BOE EV121WXM-N10-1850, S6D7AA0
 - Ampire AM-800480L1TMQW-T00H
 - Rocktech RK043FN48H
 - Starry himax83102-j02
 - Starry ili9882t
 
 amdgpu:
 - add new ctx query flag to handle reset better
 - add new query/set shadow buffer for rdna3
 - DCN 3.2/3.1.x/3.0.x updates
 - Enable DC_FP on loongarch
 - PCIe fix for RDNA2
 - improve DC FAMS/SubVP support for better power management
 - partition support for lots of engines
 - Take NUMA into account when allocating memory
 - Add new DRM_AMDGPU_WERROR config parameter to help with CI
 - Initial SMU13 overdrive support
 - Add support for new colorspace KMS API
 - W=1 fixes
 
 amdkfd:
 - Query TTM mem limit rather than hardcoding it
 - GC 9.4.3 partition support
 - Handle NUMA for partitions
 - Add debugger interface for enabling gdb
 - Add KFD event age tracking
 
 radeon:
 - Fix possible UAF
 
 i915:
 - new getparam for PXP support
 - GSC/MEI proxy driver
 - Meteorlake display enablement
 - avoid clearing preallocated framebuffers with TTM
 - implement framebuffer mmap support
 - Disable sampler indirect state in bindless heap
 - Enable fdinfo for GuC backends
 - GuC loading and firmware table handling fixes
 - Various refactors for multi-tile enablement
 - Define MOCS and PAT tables for MTL
 - GSC/MEI support for Meteorlake
 - PMU multi-tile support
 - Large driver kernel doc cleanup
 - Allow VRR toggling and arbitrary refresh rates
 - Support async flips on linear buffers on display ver 12+
 - Expose CRTC CTM property on ILK/SNB/VLV
 - New debugfs for display clock frequencies
 - Hotplug refactoring
 - Display refactoring
 - I915_GEM_CREATE_EXT_SET_PAT for Mesa on Meteorlake
 - Use large rings for compute contexts
 - HuC loading for MTL
 - Allow user to set cache at BO creation
 - MTL powermanagement enhancements
 - Switch to dedicated workqueues to stop using flush_scheduled_work()
 - Move display runtime init under display/
 - Remove 10bit gamma on desktop gen3 parts, they don't support it
 
 habanalabs:
 - uapi: return 0 for user queries if there was a h/w or f/w error
 - Add pci health check when we lose connection with the firmware. This can be used to
   distinguish between pci link down and firmware getting stuck.
 - Add more info to the error print when TPC interrupt occur.
 - Firmware fixes
 
 msm:
 - Adreno A660 bindings
 - SM8350 MDSS bindings fix
 - Added support for DPU on sm6350 and sm6375 platforms
 - Implemented tearcheck support to support vsync on SM150 and newer platforms
 - Enabled missing features (DSPP, DSC, split display) on sc8180x, sc8280xp, sm8450
 - Added support for DSI and 28nm DSI PHY on MSM8226 platform
 - Added support for DSI on sm6350 and sm6375 platforms
 - Added support for display controller on MSM8226 platform
 - A690 GPU support
 - Move cmdstream dumping out of fence signaling path
 - a610 support
 - Support for a6xx devices without GMU
 
 nouveau:
 - NULL ptr before deref fixes
 
 armada:
 - implement fbdev emulation as client
 
 sun4i:
 - fix mipi-dsi dotclock
 - release clocks
 
 vc4:
 - rgb range toggle property
 - BT601 / BT2020 HDMI support
 
 vkms:
 - convert to drmm helpers
 - add reflection and rotation support
 - fix rgb565 conversion
 
 gma500:
 - fix iomem access
 
 shmobile:
 - support renesas soc platform
 - enable fbdev
 
 mxsfb:
 - Add support for i.MX93 LCDIF
 
 stm:
 - dsi: Use devm_ helper
 - ltdc: Fix potential invalid pointer deref
 
 renesas:
 - Group drivers in renesas subdirectory to prepare for new platform
 - Drop deprecated R-Car H3 ES1.x support
 
 meson:
 - Add support for MIPI DSI displays
 
 virtio:
 - add sync object support
 
 mediatek:
 - Add display binding document for MT6795
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Merge tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm

Pull drm updates from Dave Airlie:
 "There is one set of patches to misc for a i915 gsc/mei proxy driver.

  Otherwise it's mostly amdgpu/i915/msm, lots of hw enablement and lots
  of refactoring.

  core:
   - replace strlcpy with strscpy
   - EDID changes to support further conversion to struct drm_edid
   - Move i915 DSC parameter code to common DRM helpers
   - Add Colorspace functionality

  aperture:
   - ignore framebuffers with non-primary devices

  fbdev:
   - use fbdev i/o helpers
   - add Kconfig options for fb_ops helpers
   - use new fb io helpers directly in drivers

  sysfs:
   - export DRM connector ID

  scheduler:
   - Avoid an infinite loop

  ttm:
   - store function table in .rodata
   - Add query for TTM mem limit
   - Add NUMA awareness to pools
   - Export ttm_pool_fini()

  bridge:
   - fsl-ldb: support i.MX6SX
   - lt9211, lt9611: remove blanking packets
   - tc358768: implement input bus formats, devm cleanups
   - ti-snd65dsi86: implement wait_hpd_asserted
   - analogix: fix endless probe loop
   - samsung-dsim: support swapped clock, fix enabling, support var
     clock
   - display-connector: Add support for external power supply
   - imx: Fix module linking
   - tc358762: Support reset GPIO

  panel:
   - nt36523: Support Lenovo J606F
   - st7703: Support Anbernic RG353V-V2
   - InnoLux G070ACE-L01 support
   - boe-tv101wum-nl6: Improve initialization
   - sharp-ls043t1le001: Mode fixes
   - simple: BOE EV121WXM-N10-1850, S6D7AA0
   - Ampire AM-800480L1TMQW-T00H
   - Rocktech RK043FN48H
   - Starry himax83102-j02
   - Starry ili9882t

  amdgpu:
   - add new ctx query flag to handle reset better
   - add new query/set shadow buffer for rdna3
   - DCN 3.2/3.1.x/3.0.x updates
   - Enable DC_FP on loongarch
   - PCIe fix for RDNA2
   - improve DC FAMS/SubVP support for better power management
   - partition support for lots of engines
   - Take NUMA into account when allocating memory
   - Add new DRM_AMDGPU_WERROR config parameter to help with CI
   - Initial SMU13 overdrive support
   - Add support for new colorspace KMS API
   - W=1 fixes

  amdkfd:
   - Query TTM mem limit rather than hardcoding it
   - GC 9.4.3 partition support
   - Handle NUMA for partitions
   - Add debugger interface for enabling gdb
   - Add KFD event age tracking

  radeon:
   - Fix possible UAF

  i915:
   - new getparam for PXP support
   - GSC/MEI proxy driver
   - Meteorlake display enablement
   - avoid clearing preallocated framebuffers with TTM
   - implement framebuffer mmap support
   - Disable sampler indirect state in bindless heap
   - Enable fdinfo for GuC backends
   - GuC loading and firmware table handling fixes
   - Various refactors for multi-tile enablement
   - Define MOCS and PAT tables for MTL
   - GSC/MEI support for Meteorlake
   - PMU multi-tile support
   - Large driver kernel doc cleanup
   - Allow VRR toggling and arbitrary refresh rates
   - Support async flips on linear buffers on display ver 12+
   - Expose CRTC CTM property on ILK/SNB/VLV
   - New debugfs for display clock frequencies
   - Hotplug refactoring
   - Display refactoring
   - I915_GEM_CREATE_EXT_SET_PAT for Mesa on Meteorlake
   - Use large rings for compute contexts
   - HuC loading for MTL
   - Allow user to set cache at BO creation
   - MTL powermanagement enhancements
   - Switch to dedicated workqueues to stop using flush_scheduled_work()
   - Move display runtime init under display/
   - Remove 10bit gamma on desktop gen3 parts, they don't support it

  habanalabs:
   - uapi: return 0 for user queries if there was a h/w or f/w error
   - Add pci health check when we lose connection with the firmware.
     This can be used to distinguish between pci link down and firmware
     getting stuck.
   - Add more info to the error print when TPC interrupt occur.
   - Firmware fixes

  msm:
   - Adreno A660 bindings
   - SM8350 MDSS bindings fix
   - Added support for DPU on sm6350 and sm6375 platforms
   - Implemented tearcheck support to support vsync on SM150 and newer
     platforms
   - Enabled missing features (DSPP, DSC, split display) on sc8180x,
     sc8280xp, sm8450
   - Added support for DSI and 28nm DSI PHY on MSM8226 platform
   - Added support for DSI on sm6350 and sm6375 platforms
   - Added support for display controller on MSM8226 platform
   - A690 GPU support
   - Move cmdstream dumping out of fence signaling path
   - a610 support
   - Support for a6xx devices without GMU

  nouveau:
   - NULL ptr before deref fixes

  armada:
   - implement fbdev emulation as client

  sun4i:
   - fix mipi-dsi dotclock
   - release clocks

  vc4:
   - rgb range toggle property
   - BT601 / BT2020 HDMI support

  vkms:
   - convert to drmm helpers
   - add reflection and rotation support
   - fix rgb565 conversion

  gma500:
   - fix iomem access

  shmobile:
   - support renesas soc platform
   - enable fbdev

  mxsfb:
   - Add support for i.MX93 LCDIF

  stm:
   - dsi: Use devm_ helper
   - ltdc: Fix potential invalid pointer deref

  renesas:
   - Group drivers in renesas subdirectory to prepare for new platform
   - Drop deprecated R-Car H3 ES1.x support

  meson:
   - Add support for MIPI DSI displays

  virtio:
   - add sync object support

  mediatek:
   - Add display binding document for MT6795"

* tag 'drm-next-2023-06-29' of git://anongit.freedesktop.org/drm/drm: (1791 commits)
  drm/i915: Fix a NULL vs IS_ERR() bug
  drm/i915: make i915_drm_client_fdinfo() reference conditional again
  drm/i915/huc: Fix missing error code in intel_huc_init()
  drm/i915/gsc: take a wakeref for the proxy-init-completion check
  drm/msm/a6xx: Add A610 speedbin support
  drm/msm/a6xx: Add A619_holi speedbin support
  drm/msm/a6xx: Use adreno_is_aXYZ macros in speedbin matching
  drm/msm/a6xx: Use "else if" in GPU speedbin rev matching
  drm/msm/a6xx: Fix some A619 tunables
  drm/msm/a6xx: Add A610 support
  drm/msm/a6xx: Add support for A619_holi
  drm/msm/adreno: Disable has_cached_coherent in GMU wrapper configurations
  drm/msm/a6xx: Introduce GMU wrapper support
  drm/msm/a6xx: Move CX GMU power counter enablement to hw_init
  drm/msm/a6xx: Extend and explain UBWC config
  drm/msm/a6xx: Remove both GBIF and RBBM GBIF halt on hw init
  drm/msm/a6xx: Add a helper for software-resetting the GPU
  drm/msm/a6xx: Improve a6xx_bus_clear_pending_transactions()
  drm/msm/a6xx: Move a6xx_bus_clear_pending_transactions to a6xx_gpu
  drm/msm/a6xx: Move force keepalive vote removal to a6xx_gmu_force_off()
  ...
2023-06-29 11:00:17 -07:00
Linus Torvalds
77b1a7f7a0 - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in
top-level directories.
 
 - Douglas Anderson has added a new "buddy" mode to the hardlockup
   detector.  It permits the detector to work on architectures which
   cannot provide the required interrupts, by having CPUs periodically
   perform checks on other CPUs.
 
 - Zhen Lei has enhanced kexec's ability to support two crash regions.
 
 - Petr Mladek has done a lot of cleanup on the hard lockup detector's
   Kconfig entries.
 
 - And the usual bunch of singleton patches in various places.
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Merge tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull non-mm updates from Andrew Morton:

 - Arnd Bergmann has fixed a bunch of -Wmissing-prototypes in top-level
   directories

 - Douglas Anderson has added a new "buddy" mode to the hardlockup
   detector. It permits the detector to work on architectures which
   cannot provide the required interrupts, by having CPUs periodically
   perform checks on other CPUs

 - Zhen Lei has enhanced kexec's ability to support two crash regions

 - Petr Mladek has done a lot of cleanup on the hard lockup detector's
   Kconfig entries

 - And the usual bunch of singleton patches in various places

* tag 'mm-nonmm-stable-2023-06-24-19-23' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (72 commits)
  kernel/time/posix-stubs.c: remove duplicated include
  ocfs2: remove redundant assignment to variable bit_off
  watchdog/hardlockup: fix typo in config HARDLOCKUP_DETECTOR_PREFER_BUDDY
  powerpc: move arch_trigger_cpumask_backtrace from nmi.h to irq.h
  devres: show which resource was invalid in __devm_ioremap_resource()
  watchdog/hardlockup: define HARDLOCKUP_DETECTOR_ARCH
  watchdog/sparc64: define HARDLOCKUP_DETECTOR_SPARC64
  watchdog/hardlockup: make HAVE_NMI_WATCHDOG sparc64-specific
  watchdog/hardlockup: declare arch_touch_nmi_watchdog() only in linux/nmi.h
  watchdog/hardlockup: make the config checks more straightforward
  watchdog/hardlockup: sort hardlockup detector related config values a logical way
  watchdog/hardlockup: move SMP barriers from common code to buddy code
  watchdog/buddy: simplify the dependency for HARDLOCKUP_DETECTOR_PREFER_BUDDY
  watchdog/buddy: don't copy the cpumask in watchdog_next_cpu()
  watchdog/buddy: cleanup how watchdog_buddy_check_hardlockup() is called
  watchdog/hardlockup: remove softlockup comment in touch_nmi_watchdog()
  watchdog/hardlockup: in watchdog_hardlockup_check() use cpumask_copy()
  watchdog/hardlockup: don't use raw_cpu_ptr() in watchdog_hardlockup_kick()
  watchdog/hardlockup: HAVE_NMI_WATCHDOG must implement watchdog_hardlockup_probe()
  watchdog/hardlockup: keep kernel.nmi_watchdog sysctl as 0444 if probe fails
  ...
2023-06-28 10:59:38 -07:00
Linus Torvalds
6e17c6de3d - Yosry Ahmed brought back some cgroup v1 stats in OOM logs.
- Yosry has also eliminated cgroup's atomic rstat flushing.
 
 - Nhat Pham adds the new cachestat() syscall.  It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability.
 
 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning.
 
 - Lorenzo Stoakes has done some maintanance work on the get_user_pages()
   interface.
 
 - Liam Howlett continues with cleanups and maintenance work to the maple
   tree code.  Peng Zhang also does some work on maple tree.
 
 - Johannes Weiner has done some cleanup work on the compaction code.
 
 - David Hildenbrand has contributed additional selftests for
   get_user_pages().
 
 - Thomas Gleixner has contributed some maintenance and optimization work
   for the vmalloc code.
 
 - Baolin Wang has provided some compaction cleanups,
 
 - SeongJae Park continues maintenance work on the DAMON code.
 
 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting.
 
 - Christoph Hellwig has some cleanups for the filemap/directio code.
 
 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the provided
   APIs rather than open-coding accesses.
 
 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings.
 
 - John Hubbard has a series of fixes to the MM selftesting code.
 
 - ZhangPeng continues the folio conversion campaign.
 
 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock.
 
 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment from
   128 to 8.
 
 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management.
 
 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code.
 
 - Vishal Moola also has done some folio conversion work.
 
 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch.
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Merge tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull mm updates from Andrew Morton:

 - Yosry Ahmed brought back some cgroup v1 stats in OOM logs

 - Yosry has also eliminated cgroup's atomic rstat flushing

 - Nhat Pham adds the new cachestat() syscall. It provides userspace
   with the ability to query pagecache status - a similar concept to
   mincore() but more powerful and with improved usability

 - Mel Gorman provides more optimizations for compaction, reducing the
   prevalence of page rescanning

 - Lorenzo Stoakes has done some maintanance work on the
   get_user_pages() interface

 - Liam Howlett continues with cleanups and maintenance work to the
   maple tree code. Peng Zhang also does some work on maple tree

 - Johannes Weiner has done some cleanup work on the compaction code

 - David Hildenbrand has contributed additional selftests for
   get_user_pages()

 - Thomas Gleixner has contributed some maintenance and optimization
   work for the vmalloc code

 - Baolin Wang has provided some compaction cleanups,

 - SeongJae Park continues maintenance work on the DAMON code

 - Huang Ying has done some maintenance on the swap code's usage of
   device refcounting

 - Christoph Hellwig has some cleanups for the filemap/directio code

 - Ryan Roberts provides two patch series which yield some
   rationalization of the kernel's access to pte entries - use the
   provided APIs rather than open-coding accesses

 - Lorenzo Stoakes has some fixes to the interaction between pagecache
   and directio access to file mappings

 - John Hubbard has a series of fixes to the MM selftesting code

 - ZhangPeng continues the folio conversion campaign

 - Hugh Dickins has been working on the pagetable handling code, mainly
   with a view to reducing the load on the mmap_lock

 - Catalin Marinas has reduced the arm64 kmalloc() minimum alignment
   from 128 to 8

 - Domenico Cerasuolo has improved the zswap reclaim mechanism by
   reorganizing the LRU management

 - Matthew Wilcox provides some fixups to make gfs2 work better with the
   buffer_head code

 - Vishal Moola also has done some folio conversion work

 - Matthew Wilcox has removed the remnants of the pagevec code - their
   functionality is migrated over to struct folio_batch

* tag 'mm-stable-2023-06-24-19-15' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (380 commits)
  mm/hugetlb: remove hugetlb_set_page_subpool()
  mm: nommu: correct the range of mmap_sem_read_lock in task_mem()
  hugetlb: revert use of page_cache_next_miss()
  Revert "page cache: fix page_cache_next/prev_miss off by one"
  mm/vmscan: fix root proactive reclaim unthrottling unbalanced node
  mm: memcg: rename and document global_reclaim()
  mm: kill [add|del]_page_to_lru_list()
  mm: compaction: convert to use a folio in isolate_migratepages_block()
  mm: zswap: fix double invalidate with exclusive loads
  mm: remove unnecessary pagevec includes
  mm: remove references to pagevec
  mm: rename invalidate_mapping_pagevec to mapping_try_invalidate
  mm: remove struct pagevec
  net: convert sunrpc from pagevec to folio_batch
  i915: convert i915_gpu_error to use a folio_batch
  pagevec: rename fbatch_count()
  mm: remove check_move_unevictable_pages()
  drm: convert drm_gem_put_pages() to use a folio_batch
  i915: convert shmem_sg_free_table() to use a folio_batch
  scatterlist: add sg_set_folio()
  ...
2023-06-28 10:28:11 -07:00
Linus Torvalds
bc6cb4d5bc Locking changes for v6.5:
- Introduce cmpxchg128() -- aka. the demise of cmpxchg_double().
 
   The cmpxchg128() family of functions is basically & functionally
   the same as cmpxchg_double(), but with a saner interface: instead
   of a 6-parameter horror that forced u128 - u64/u64-halves layout
   details on the interface and exposed users to complexity,
   fragility & bugs, use a natural 3-parameter interface with u128 types.
 
 - Restructure the generated atomic headers, and add
   kerneldoc comments for all of the generic atomic{,64,_long}_t
   operations. Generated definitions are much cleaner now,
   and come with documentation.
 
 - Implement lock_set_cmp_fn() on lockdep, for defining an ordering
   when taking multiple locks of the same type. This gets rid of
   one use of lockdep_set_novalidate_class() in the bcache code.
 
 - Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended
   variable shadowing generating garbage code on Clang on certain
   ARM builds.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - Introduce cmpxchg128() -- aka. the demise of cmpxchg_double()

   The cmpxchg128() family of functions is basically & functionally the
   same as cmpxchg_double(), but with a saner interface.

   Instead of a 6-parameter horror that forced u128 - u64/u64-halves
   layout details on the interface and exposed users to complexity,
   fragility & bugs, use a natural 3-parameter interface with u128
   types.

 - Restructure the generated atomic headers, and add kerneldoc comments
   for all of the generic atomic{,64,_long}_t operations.

   The generated definitions are much cleaner now, and come with
   documentation.

 - Implement lock_set_cmp_fn() on lockdep, for defining an ordering when
   taking multiple locks of the same type.

   This gets rid of one use of lockdep_set_novalidate_class() in the
   bcache code.

 - Fix raw_cpu_generic_try_cmpxchg() bug due to an unintended variable
   shadowing generating garbage code on Clang on certain ARM builds.

* tag 'locking-core-2023-06-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (43 commits)
  locking/atomic: scripts: fix ${atomic}_dec_if_positive() kerneldoc
  percpu: Fix self-assignment of __old in raw_cpu_generic_try_cmpxchg()
  locking/atomic: treewide: delete arch_atomic_*() kerneldoc
  locking/atomic: docs: Add atomic operations to the driver basic API documentation
  locking/atomic: scripts: generate kerneldoc comments
  docs: scripts: kernel-doc: accept bitwise negation like ~@var
  locking/atomic: scripts: simplify raw_atomic*() definitions
  locking/atomic: scripts: simplify raw_atomic_long*() definitions
  locking/atomic: scripts: split pfx/name/sfx/order
  locking/atomic: scripts: restructure fallback ifdeffery
  locking/atomic: scripts: build raw_atomic_long*() directly
  locking/atomic: treewide: use raw_atomic*_<op>()
  locking/atomic: scripts: add trivial raw_atomic*_<op>()
  locking/atomic: scripts: factor out order template generation
  locking/atomic: scripts: remove leftover "${mult}"
  locking/atomic: scripts: remove bogus order parameter
  locking/atomic: xtensa: add preprocessor symbols
  locking/atomic: x86: add preprocessor symbols
  locking/atomic: sparc: add preprocessor symbols
  locking/atomic: sh: add preprocessor symbols
  ...
2023-06-27 14:14:30 -07:00
Catalin Marinas
e6926a4d1c sh: move the ARCH_DMA_MINALIGN definition to asm/cache.h
The sh architecture defines ARCH_DMA_MINALIGN in asm/page.h.  Move it to
asm/cache.h to allow a generic ARCH_DMA_MINALIGN definition in
linux/cache.h without redefine errors/warnings.

Link: https://lkml.kernel.org/r/20230613155245.1228274-4-catalin.marinas@arm.com
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Cc: Christophe Leroy <christophe.leroy@csgroup.eu>
Cc: kernel test robot <lkp@intel.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Nicholas Piggin <npiggin@gmail.com>
Cc: Vlastimil Babka <vbabka@suse.cz>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-19 16:19:24 -07:00
Thomas Gleixner
01eb454e9b sh/cpu: Switch to arch_cpu_finalize_init()
check_bugs() is about to be phased out. Switch over to the new
arch_cpu_finalize_init() implementation.

No functional change.

Signed-off-by: Thomas Gleixner <tglx@linutronix.de>
Link: https://lore.kernel.org/r/20230613224545.371697797@linutronix.de
2023-06-16 10:16:00 +02:00
Sergey Shtylyov
a8ac296114 sh: Avoid using IRQ0 on SH3 and SH4
IRQ0 is no longer returned by platform_get_irq() and its ilk -- they now
return -EINVAL instead.  However, the kernel code supporting SH3/4-based
SoCs still maps the IRQ #s starting at 0 -- modify that code to start the
IRQ #s from 16 instead.

The patch should mostly affect the AP-SH4A-3A/AP-SH4AD-0A boards as they
indeed are using IRQ0 for the SMSC911x compatible Ethernet chip.

Fixes: ce753ad154 ("platform: finally disallow IRQ0 in platform_get_irq() and its ilk")
Signed-off-by: Sergey Shtylyov <s.shtylyov@omp.ru>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Tested-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Tested-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/71105dbf-cdb0-72e1-f9eb-eeda8e321696@omp.ru
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-06-11 18:22:47 +02:00
Arnd Bergmann
af0a76e126 thread_info: move function declarations to linux/thread_info.h
There are a few __weak functions in kernel/fork.c, which architectures
can override. If there is no prototype, the compiler warns about them:

kernel/fork.c:164:13: error: no previous prototype for 'arch_release_task_struct' [-Werror=missing-prototypes]
kernel/fork.c:991:20: error: no previous prototype for 'arch_task_cache_init' [-Werror=missing-prototypes]
kernel/fork.c:1086:12: error: no previous prototype for 'arch_dup_task_struct' [-Werror=missing-prototypes]

There are already prototypes in a number of architecture specific headers
that have addressed those warnings before, but it's much better to have
these in a single place so the warning no longer shows up anywhere.

Link: https://lkml.kernel.org/r/20230517131102.934196-14-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Eric Paris <eparis@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-09 17:44:16 -07:00
Arnd Bergmann
ad1a48301f init: consolidate prototypes in linux/init.h
The init/main.c file contains some extern declarations for functions
defined in architecture code, and it defines some other functions that are
called from architecture code with a custom prototype.  Both of those
result in warnings with 'make W=1':

init/calibrate.c:261:37: error: no previous prototype for 'calibrate_delay_is_known' [-Werror=missing-prototypes]
init/main.c:790:20: error: no previous prototype for 'mem_encrypt_init' [-Werror=missing-prototypes]
init/main.c:792:20: error: no previous prototype for 'poking_init' [-Werror=missing-prototypes]
arch/arm64/kernel/irq.c:122:13: error: no previous prototype for 'init_IRQ' [-Werror=missing-prototypes]
arch/arm64/kernel/time.c:55:13: error: no previous prototype for 'time_init' [-Werror=missing-prototypes]
arch/x86/kernel/process.c:935:13: error: no previous prototype for 'arch_post_acpi_subsys_init' [-Werror=missing-prototypes]
init/calibrate.c:261:37: error: no previous prototype for 'calibrate_delay_is_known' [-Werror=missing-prototypes]
kernel/fork.c:991:20: error: no previous prototype for 'arch_task_cache_init' [-Werror=missing-prototypes]

Add prototypes for all of these in include/linux/init.h or another
appropriate header, and remove the duplicate declarations from
architecture specific code.

[sfr@canb.auug.org.au: declare time_init_early()]
  Link: https://lkml.kernel.org/r/20230519124311.5167221c@canb.auug.org.au
Link: https://lkml.kernel.org/r/20230517131102.934196-12-arnd@kernel.org
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Stephen Rothwell <sfr@canb.auug.org.au>
Cc: Boqun Feng <boqun.feng@gmail.com>
Cc: Catalin Marinas <catalin.marinas@arm.com>
Cc: Christoph Lameter <cl@linux.com>
Cc: Dennis Zhou <dennis@kernel.org>
Cc: Eric Paris <eparis@redhat.com>
Cc: Heiko Carstens <hca@linux.ibm.com>
Cc: Helge Deller <deller@gmx.de>
Cc: Ingo Molnar <mingo@redhat.com>
Cc: Michael Ellerman <mpe@ellerman.id.au>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Paul Moore <paul@paul-moore.com>
Cc: Pavel Machek <pavel@ucw.cz>
Cc: Peter Zijlstra <peterz@infradead.org>
Cc: Rafael J. Wysocki <rafael@kernel.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Tejun Heo <tj@kernel.org>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Thomas Gleixner <tglx@linutronix.de>
Cc: Waiman Long <longman@redhat.com>
Cc: Will Deacon <will@kernel.org>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-06-09 17:44:16 -07:00
Mark Rutland
770345adc3 locking/atomic: sh: add preprocessor symbols
Some atomics can be implemented in several different ways, e.g.
FULL/ACQUIRE/RELEASE ordered atomics can be implemented in terms of
RELAXED atomics, and ACQUIRE/RELEASE/RELAXED can be implemented in terms
of FULL ordered atomics. Other atomics are optional, and don't exist in
some configurations (e.g. not all architectures implement the 128-bit
cmpxchg ops).

Subsequent patches will require that architectures define a preprocessor
symbol for any atomic (or ordering variant) which is optional. This will
make the fallback ifdeffery more robust, and simplify future changes.

Add the required definitions to arch/sh.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230605070124.3741859-11-mark.rutland@arm.com
2023-06-05 09:57:16 +02:00
Mark Rutland
d12157efc8 locking/atomic: make atomic*_{cmp,}xchg optional
Most architectures define the atomic/atomic64 xchg and cmpxchg
operations in terms of arch_xchg and arch_cmpxchg respectfully.

Add fallbacks for these cases and remove the trivial cases from arch
code. On some architectures the existing definitions are kept as these
are used to build other arch_atomic*() operations.

Signed-off-by: Mark Rutland <mark.rutland@arm.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Reviewed-by: Kees Cook <keescook@chromium.org>
Link: https://lore.kernel.org/r/20230605070124.3741859-5-mark.rutland@arm.com
2023-06-05 09:57:14 +02:00
Maxime Ripard
ff32fcca64
Merge drm/drm-next into drm-misc-next
Start the 6.5 release cycle.

Signed-off-by: Maxime Ripard <maxime@cerno.tech>
2023-05-09 15:03:40 +02:00
Linus Torvalds
b115d85a95 Locking changes in v6.4:
- Introduce local{,64}_try_cmpxchg() - a slightly more optimal
    primitive, which will be used in perf events ring-buffer code.
 
  - Simplify/modify rwsems on PREEMPT_RT, to address writer starvation.
 
  - Misc cleanups/fixes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull locking updates from Ingo Molnar:

 - Introduce local{,64}_try_cmpxchg() - a slightly more optimal
   primitive, which will be used in perf events ring-buffer code

 - Simplify/modify rwsems on PREEMPT_RT, to address writer starvation

 - Misc cleanups/fixes

* tag 'locking-core-2023-05-05' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
  locking/atomic: Correct (cmp)xchg() instrumentation
  locking/x86: Define arch_try_cmpxchg_local()
  locking/arch: Wire up local_try_cmpxchg()
  locking/generic: Wire up local{,64}_try_cmpxchg()
  locking/atomic: Add generic try_cmpxchg{,64}_local() support
  locking/rwbase: Mitigate indefinite writer starvation
  locking/arch: Rename all internal __xchg() names to __arch_xchg()
2023-05-05 12:56:55 -07:00
Andrzej Hajda
068550631f locking/arch: Rename all internal __xchg() names to __arch_xchg()
Decrease the probability of this internal facility to be used by
driver code.

Signed-off-by: Andrzej Hajda <andrzej.hajda@intel.com>
Signed-off-by: Peter Zijlstra (Intel) <peterz@infradead.org>
Signed-off-by: Ingo Molnar <mingo@kernel.org>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Andi Shyti <andi.shyti@linux.intel.com>
Acked-by: Geert Uytterhoeven <geert@linux-m68k.org> [m68k]
Acked-by: Palmer Dabbelt <palmer@rivosinc.com> [riscv]
Link: https://lore.kernel.org/r/20230118154450.73842-1-andrzej.hajda@intel.com
Cc: Linus Torvalds <torvalds@linux-foundation.org>
2023-04-29 09:08:44 +02:00
Linus Torvalds
2aff7c706c Objtool changes for v6.4:
- Mark arch_cpu_idle_dead() __noreturn, make all architectures & drivers that did
    this inconsistently follow this new, common convention, and fix all the fallout
    that objtool can now detect statically.
 
  - Fix/improve the ORC unwinder becoming unreliable due to UNWIND_HINT_EMPTY ambiguity,
    split it into UNWIND_HINT_END_OF_STACK and UNWIND_HINT_UNDEFINED to resolve it.
 
  - Fix noinstr violations in the KCSAN code and the lkdtm/stackleak code.
 
  - Generate ORC data for __pfx code
 
  - Add more __noreturn annotations to various kernel startup/shutdown/panic functions.
 
  - Misc improvements & fixes.
 
 Signed-off-by: Ingo Molnar <mingo@kernel.org>
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Merge tag 'objtool-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip

Pull objtool updates from Ingo Molnar:

 - Mark arch_cpu_idle_dead() __noreturn, make all architectures &
   drivers that did this inconsistently follow this new, common
   convention, and fix all the fallout that objtool can now detect
   statically

 - Fix/improve the ORC unwinder becoming unreliable due to
   UNWIND_HINT_EMPTY ambiguity, split it into UNWIND_HINT_END_OF_STACK
   and UNWIND_HINT_UNDEFINED to resolve it

 - Fix noinstr violations in the KCSAN code and the lkdtm/stackleak code

 - Generate ORC data for __pfx code

 - Add more __noreturn annotations to various kernel startup/shutdown
   and panic functions

 - Misc improvements & fixes

* tag 'objtool-core-2023-04-27' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip: (52 commits)
  x86/hyperv: Mark hv_ghcb_terminate() as noreturn
  scsi: message: fusion: Mark mpt_halt_firmware() __noreturn
  x86/cpu: Mark {hlt,resume}_play_dead() __noreturn
  btrfs: Mark btrfs_assertfail() __noreturn
  objtool: Include weak functions in global_noreturns check
  cpu: Mark nmi_panic_self_stop() __noreturn
  cpu: Mark panic_smp_self_stop() __noreturn
  arm64/cpu: Mark cpu_park_loop() and friends __noreturn
  x86/head: Mark *_start_kernel() __noreturn
  init: Mark start_kernel() __noreturn
  init: Mark [arch_call_]rest_init() __noreturn
  objtool: Generate ORC data for __pfx code
  x86/linkage: Fix padding for typed functions
  objtool: Separate prefix code from stack validation code
  objtool: Remove superfluous dead_end_function() check
  objtool: Add symbol iteration helpers
  objtool: Add WARN_INSN()
  scripts/objdump-func: Support multiple functions
  context_tracking: Fix KCSAN noinstr violation
  objtool: Add stackleak instrumentation to uaccess safe list
  ...
2023-04-28 14:02:54 -07:00
Linus Torvalds
513f17f8d6 sh updates for v6.4
- sh: Use generic GCC library routines
 - sh: sq: Use the bitmap API when applicable
 - sh: sq: Fix incorrect element size for allocating bitmap buffer
 - sh: pci: Remove unused variable in SH-7786 PCI Express code
 - sh: mcount.S: fix build error when PRINTK is not enabled
 - sh: remove sh5/sh64 last fragments
 - sh: math-emu: fix macro redefined warning
 - sh: init: use OF_EARLY_FLATTREE for early init
 - sh: nmi_debug: fix return value of __setup handler
 - sh: SH2007: drop the bad URL info
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Merge tag 'sh-for-v6.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux

Pull sh updates from John Paul Adrian Glaubitz:
 "This is a bit larger than my previous one and mainly consists of
  clean-up work in the arch/sh directory by Geert Uytterhoeven and Randy
  Dunlap.

  Additionally, this fixes a bug in the Storage Queue code that was
  discovered while I was reviewing a patch to switch the code to the
  bitmap API by Christophe Jaillet.

  So this contains both a fix for the original bug in the Storage Queue
  code that can be backported later as well as the Christophe's patch to
  swich the code to the bitmap API.

  Summary:

   - Use generic GCC library routines

   - sq: Use the bitmap API when applicable

   - sq: Fix incorrect element size for allocating bitmap buffer

   - pci: Remove unused variable in SH-7786 PCI Express code

   - mcount.S: fix build error when PRINTK is not enabled

   - remove sh5/sh64 last fragments

   - math-emu: fix macro redefined warning

   - init: use OF_EARLY_FLATTREE for early init

   - nmi_debug: fix return value of __setup handler

   - SH2007: drop the bad URL info"

* tag 'sh-for-v6.4-tag1' of git://git.kernel.org/pub/scm/linux/kernel/git/glaubitz/sh-linux:
  sh: Replace <uapi/asm/types.h> by <asm-generic/int-ll64.h>
  sh: Use generic GCC library routines
  sh: sq: Use the bitmap API when applicable
  sh: sq: Fix incorrect element size for allocating bitmap buffer
  sh: pci: Remove unused variable in SH-7786 PCI Express code
  sh: mcount.S: fix build error when PRINTK is not enabled
  sh: remove sh5/sh64 last fragments
  sh: math-emu: fix macro redefined warning
  sh: init: use OF_EARLY_FLATTREE for early init
  sh: nmi_debug: fix return value of __setup handler
  sh: SH2007: drop the bad URL info
2023-04-27 17:41:23 -07:00
Linus Torvalds
2c96606a0f gpio updates for v6.4-rc1
New drivers:
 - add a driver for the Loongson GPIO controller
 - add a driver for the fxl6408 I2C GPIO expander
 - add a GPIO module containing code common for Intel Elkhart Lake and
   Merrifield platforms
 - add a driver for the Intel Elkhart Lake platform reusing the code from
   the intel tangier library
 
 GPIOLIB core:
 - GPIO ACPI improvements
 - simplify gpiochip_add_data_with_keys() fwnode handling
 - cleanup header inclusions (remove unneeded ones, order the rest
   alphabetically)
 - remove duplicate code (reuse krealloc() instead of open-coding it, drop
   a duplicated check in gpiod_find_and_request())
 - reshuffle the code to remove unnecessary forward declarations
 - coding style cleanups and improvements
 - add a helper for accessing device fwnodes
 - small updates in docs
 
 Driver improvements:
 - convert all remaining GPIO irqchip drivers to using immutable irqchips
 - drop unnecessary of_match_ptr() macro expansions
 - shrink the code in gpio-merrifield significantly by reusing the code from
   gpio-tangier + minor tweaks to the driver code
 - remove MODULE_LICENSE() from drivers that can only be built-in
 - add device-tree support to gpio-loongson1
 - use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
 - minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194, gpio-omap,
   gpio-aspeed, gpio-raspberrypi-exp
 - shrink code in gpio-ich and gpio-pxa
 - Kconfig tweak for gpio-pmic-eic-sprd
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Merge tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "We have some new drivers, significant refactoring of existing intel
  platforms, lots of improvements all around, mass conversion to using
  immutable irqchips by drivers that had not been converted individually
  yet and some changes in the core library code.

  Summary:

  New drivers:
   - add a driver for the Loongson GPIO controller
   - add a driver for the fxl6408 I2C GPIO expander
   - add a GPIO module containing code common for Intel Elkhart Lake and
     Merrifield platforms
   - add a driver for the Intel Elkhart Lake platform reusing the code
     from the intel tangier library

  GPIOLIB core:
   - GPIO ACPI improvements
   - simplify gpiochip_add_data_with_keys() fwnode handling
   - cleanup header inclusions (remove unneeded ones, order the rest
     alphabetically)
   - remove duplicate code (reuse krealloc() instead of open-coding it,
     drop a duplicated check in gpiod_find_and_request())
   - reshuffle the code to remove unnecessary forward declarations
   - coding style cleanups and improvements
   - add a helper for accessing device fwnodes
   - small updates in docs

  Driver improvements:
   - convert all remaining GPIO irqchip drivers to using immutable
     irqchips
   - drop unnecessary of_match_ptr() macro expansions
   - shrink the code in gpio-merrifield significantly by reusing the
     code from gpio-tangier + minor tweaks to the driver code
   - remove MODULE_LICENSE() from drivers that can only be built-in
   - add device-tree support to gpio-loongson1
   - use new regmap features in gpio-104-dio-48e and gpio-pcie-idio-24
   - minor tweaks and fixes to gpio-xra1403, gpio-sim, gpio-tegra194,
     gpio-omap, gpio-aspeed, gpio-raspberrypi-exp
   - shrink code in gpio-ich and gpio-pxa
   - Kconfig tweak for gpio-pmic-eic-sprd"

* tag 'gpio-updates-for-v6.4' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (99 commits)
  gpio: gpiolib: Simplify gpiochip_add_data_with_key() fwnode
  gpiolib: Add gpiochip_set_data() helper
  gpiolib: Move gpiochip_get_data() higher in the code
  gpiolib: Check array_info for NULL only once in gpiod_get_array()
  gpiolib: Replace open coded krealloc()
  gpiolib: acpi: Add a ignore wakeup quirk for Clevo NL5xNU
  gpiolib: acpi: Move ACPI device NULL check to acpi_get_driver_gpio_data()
  gpiolib: acpi: use the fwnode in acpi_gpiochip_find()
  gpio: mm-lantiq: Fix typo in the newly added header filename
  sh: mach-x3proto: Add missing #include <linux/gpio/driver.h>
  powerpc/40x: Add missing select OF_GPIO_MM_GPIOCHIP
  gpio: xlp: Convert to immutable irq_chip
  gpio: xilinx: Convert to immutable irq_chip
  gpio: xgs-iproc: Convert to immutable irq_chip
  gpio: visconti: Convert to immutable irq_chip
  gpio: tqmx86: Convert to immutable irq_chip
  gpio: thunderx: Convert to immutable irq_chip
  gpio: stmpe: Convert to immutable irq_chip
  gpio: siox: Convert to immutable irq_chip
  gpio: rda: Convert to immutable irq_chip
  ...
2023-04-25 17:18:18 -07:00
Geert Uytterhoeven
e5c23bec0f sh: Replace <uapi/asm/types.h> by <asm-generic/int-ll64.h>
As arch/sh/include/uapi/asm/types.h doesn't exist, sh doesn't provide
any sh-specific uapi definitions, and it can just include
<asm-generic/int-ll64.h>, like most other architectures.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Reviewed-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Link: https://lore.kernel.org/r/26932016c83c2ad350db59f5daf96117a38bbbd8.1679566927.git.geert@linux-m68k.org
Signed-off-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
2023-04-25 09:16:51 +02:00
Thomas Zimmermann
b6cf29637b arch/sh: Implement <asm/fb.h> with generic helpers
Replace the architecture's fbdev helpers with the generic
ones from <asm-generic/fb.h>. No functional changes.

v2:
	* use default implementation for fb_pgprotect() (Arnd)

Signed-off-by: Thomas Zimmermann <tzimmermann@suse.de>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Cc: Rich Felker <dalias@libc.org>
Cc: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Acked-by: John Paul Adrian Glaubitz <glaubitz@physik.fu-berlin.de>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Helge Deller <deller@gmx.de>
Link: https://patchwork.freedesktop.org/patch/msgid/20230417125651.25126-17-tzimmermann@suse.de
2023-04-20 10:05:08 +02:00
Al Viro
573b22ccb7 sh: sanitize the flags on sigreturn
We fetch %SR value from sigframe; it might have been modified by signal
handler, so we can't trust it with any bits that are not modifiable in
user mode.

Signed-off-by: Al Viro <viro@zeniv.linux.org.uk>
Cc: Rich Felker <dalias@libc.org>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2023-03-09 10:01:59 -08:00
Josh Poimboeuf
1644b74192 sh/cpu: Mark play_dead() __noreturn
play_dead() doesn't return.  Annotate it as such.  By extension this
also makes arch_cpu_idle_dead() noreturn.

Link: https://lore.kernel.org/r/03549a74fad9f73576d57e6fc0b5102322f9cff4.1676358308.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
2023-03-08 08:44:24 -08:00
Josh Poimboeuf
2439718854 sh/cpu: Make sure play_dead() doesn't return
play_dead() doesn't return.  Make that more explicit with a BUG().

BUG() is preferable to unreachable() because BUG() is a more explicit
failure mode and avoids undefined behavior like falling off the edge of
the function into whatever code happens to be next.

Link: https://lore.kernel.org/r/d0c3ff5349adfe8fd227acc236ae2c278a05eb4c.1676358308.git.jpoimboe@kernel.org
Signed-off-by: Josh Poimboeuf <jpoimboe@kernel.org>
2023-03-08 08:44:24 -08:00
Arnd Bergmann
ee5a66d87c gpiolib: remove empty asm/gpio.h files
The arm and sh versions of this file are identical to the generic
versions and can just be removed.

The drivers that actually use the sh3 specific version also include
cpu/gpio.h directly, with the exception of magicpanelr2, which is
easily fixed. This leaves coldfire as the only gpio driver
that needs something custom for gpiolib.

Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Reviewed-by: Vincenzo Palazzo <vincenzopalazzodev@gmail.com>
2023-03-06 12:33:01 +02:00
Linus Torvalds
3822a7c409 - Daniel Verkamp has contributed a memfd series ("mm/memfd: add
F_SEAL_EXEC") which permits the setting of the memfd execute bit at
   memfd creation time, with the option of sealing the state of the X bit.
 
 - Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset()
   thread-safe for pmd unshare") which addresses a rare race condition
   related to PMD unsharing.
 
 - Several folioification patch serieses from Matthew Wilcox, Vishal
   Moola, Sidhartha Kumar and Lorenzo Stoakes
 
 - Johannes Weiner has a series ("mm: push down lock_page_memcg()") which
   does perform some memcg maintenance and cleanup work.
 
 - SeongJae Park has added DAMOS filtering to DAMON, with the series
   "mm/damon/core: implement damos filter".  These filters provide users
   with finer-grained control over DAMOS's actions.  SeongJae has also done
   some DAMON cleanup work.
 
 - Kairui Song adds a series ("Clean up and fixes for swap").
 
 - Vernon Yang contributed the series "Clean up and refinement for maple
   tree".
 
 - Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series.  It
   adds to MGLRU an LRU of memcgs, to improve the scalability of global
   reclaim.
 
 - David Hildenbrand has added some userfaultfd cleanup work in the
   series "mm: uffd-wp + change_protection() cleanups".
 
 - Christoph Hellwig has removed the generic_writepages() library
   function in the series "remove generic_writepages".
 
 - Baolin Wang has performed some maintenance on the compaction code in
   his series "Some small improvements for compaction".
 
 - Sidhartha Kumar is doing some maintenance work on struct page in his
   series "Get rid of tail page fields".
 
 - David Hildenbrand contributed some cleanup, bugfixing and
   generalization of pte management and of pte debugging in his series "mm:
   support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with swap
   PTEs".
 
 - Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation
   flag in the series "Discard __GFP_ATOMIC".
 
 - Sergey Senozhatsky has improved zsmalloc's memory utilization with his
   series "zsmalloc: make zspage chain size configurable".
 
 - Joey Gouly has added prctl() support for prohibiting the creation of
   writeable+executable mappings.  The previous BPF-based approach had
   shortcomings.  See "mm: In-kernel support for memory-deny-write-execute
   (MDWE)".
 
 - Waiman Long did some kmemleak cleanup and bugfixing in the series
   "mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF".
 
 - T.J.  Alumbaugh has contributed some MGLRU cleanup work in his series
   "mm: multi-gen LRU: improve".
 
 - Jiaqi Yan has provided some enhancements to our memory error
   statistics reporting, mainly by presenting the statistics on a per-node
   basis.  See the series "Introduce per NUMA node memory error
   statistics".
 
 - Mel Gorman has a second and hopefully final shot at fixing a CPU-hog
   regression in compaction via his series "Fix excessive CPU usage during
   compaction".
 
 - Christoph Hellwig does some vmalloc maintenance work in the series
   "cleanup vfree and vunmap".
 
 - Christoph Hellwig has removed block_device_operations.rw_page() in ths
   series "remove ->rw_page".
 
 - We get some maple_tree improvements and cleanups in Liam Howlett's
   series "VMA tree type safety and remove __vma_adjust()".
 
 - Suren Baghdasaryan has done some work on the maintainability of our
   vm_flags handling in the series "introduce vm_flags modifier functions".
 
 - Some pagemap cleanup and generalization work in Mike Rapoport's series
   "mm, arch: add generic implementation of pfn_valid() for FLATMEM" and
   "fixups for generic implementation of pfn_valid()"
 
 - Baoquan He has done some work to make /proc/vmallocinfo and
   /proc/kcore better represent the real state of things in his series
   "mm/vmalloc.c: allow vread() to read out vm_map_ram areas".
 
 - Jason Gunthorpe rationalized the GUP system's interface to the rest of
   the kernel in the series "Simplify the external interface for GUP".
 
 - SeongJae Park wishes to migrate people from DAMON's debugfs interface
   over to its sysfs interface.  To support this, we'll temporarily be
   printing warnings when people use the debugfs interface.  See the series
   "mm/damon: deprecate DAMON debugfs interface".
 
 - Andrey Konovalov provided the accurately named "lib/stackdepot: fixes
   and clean-ups" series.
 
 - Huang Ying has provided a dramatic reduction in migration's TLB flush
   IPI rates with the series "migrate_pages(): batch TLB flushing".
 
 - Arnd Bergmann has some objtool fixups in "objtool warning fixes".
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Merge tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm

Pull MM updates from Andrew Morton:

 - Daniel Verkamp has contributed a memfd series ("mm/memfd: add
   F_SEAL_EXEC") which permits the setting of the memfd execute bit at
   memfd creation time, with the option of sealing the state of the X
   bit.

 - Peter Xu adds a patch series ("mm/hugetlb: Make huge_pte_offset()
   thread-safe for pmd unshare") which addresses a rare race condition
   related to PMD unsharing.

 - Several folioification patch serieses from Matthew Wilcox, Vishal
   Moola, Sidhartha Kumar and Lorenzo Stoakes

 - Johannes Weiner has a series ("mm: push down lock_page_memcg()")
   which does perform some memcg maintenance and cleanup work.

 - SeongJae Park has added DAMOS filtering to DAMON, with the series
   "mm/damon/core: implement damos filter".

   These filters provide users with finer-grained control over DAMOS's
   actions. SeongJae has also done some DAMON cleanup work.

 - Kairui Song adds a series ("Clean up and fixes for swap").

 - Vernon Yang contributed the series "Clean up and refinement for maple
   tree".

 - Yu Zhao has contributed the "mm: multi-gen LRU: memcg LRU" series. It
   adds to MGLRU an LRU of memcgs, to improve the scalability of global
   reclaim.

 - David Hildenbrand has added some userfaultfd cleanup work in the
   series "mm: uffd-wp + change_protection() cleanups".

 - Christoph Hellwig has removed the generic_writepages() library
   function in the series "remove generic_writepages".

 - Baolin Wang has performed some maintenance on the compaction code in
   his series "Some small improvements for compaction".

 - Sidhartha Kumar is doing some maintenance work on struct page in his
   series "Get rid of tail page fields".

 - David Hildenbrand contributed some cleanup, bugfixing and
   generalization of pte management and of pte debugging in his series
   "mm: support __HAVE_ARCH_PTE_SWP_EXCLUSIVE on all architectures with
   swap PTEs".

 - Mel Gorman and Neil Brown have removed the __GFP_ATOMIC allocation
   flag in the series "Discard __GFP_ATOMIC".

 - Sergey Senozhatsky has improved zsmalloc's memory utilization with
   his series "zsmalloc: make zspage chain size configurable".

 - Joey Gouly has added prctl() support for prohibiting the creation of
   writeable+executable mappings.

   The previous BPF-based approach had shortcomings. See "mm: In-kernel
   support for memory-deny-write-execute (MDWE)".

 - Waiman Long did some kmemleak cleanup and bugfixing in the series
   "mm/kmemleak: Simplify kmemleak_cond_resched() & fix UAF".

 - T.J. Alumbaugh has contributed some MGLRU cleanup work in his series
   "mm: multi-gen LRU: improve".

 - Jiaqi Yan has provided some enhancements to our memory error
   statistics reporting, mainly by presenting the statistics on a
   per-node basis. See the series "Introduce per NUMA node memory error
   statistics".

 - Mel Gorman has a second and hopefully final shot at fixing a CPU-hog
   regression in compaction via his series "Fix excessive CPU usage
   during compaction".

 - Christoph Hellwig does some vmalloc maintenance work in the series
   "cleanup vfree and vunmap".

 - Christoph Hellwig has removed block_device_operations.rw_page() in
   ths series "remove ->rw_page".

 - We get some maple_tree improvements and cleanups in Liam Howlett's
   series "VMA tree type safety and remove __vma_adjust()".

 - Suren Baghdasaryan has done some work on the maintainability of our
   vm_flags handling in the series "introduce vm_flags modifier
   functions".

 - Some pagemap cleanup and generalization work in Mike Rapoport's
   series "mm, arch: add generic implementation of pfn_valid() for
   FLATMEM" and "fixups for generic implementation of pfn_valid()"

 - Baoquan He has done some work to make /proc/vmallocinfo and
   /proc/kcore better represent the real state of things in his series
   "mm/vmalloc.c: allow vread() to read out vm_map_ram areas".

 - Jason Gunthorpe rationalized the GUP system's interface to the rest
   of the kernel in the series "Simplify the external interface for
   GUP".

 - SeongJae Park wishes to migrate people from DAMON's debugfs interface
   over to its sysfs interface. To support this, we'll temporarily be
   printing warnings when people use the debugfs interface. See the
   series "mm/damon: deprecate DAMON debugfs interface".

 - Andrey Konovalov provided the accurately named "lib/stackdepot: fixes
   and clean-ups" series.

 - Huang Ying has provided a dramatic reduction in migration's TLB flush
   IPI rates with the series "migrate_pages(): batch TLB flushing".

 - Arnd Bergmann has some objtool fixups in "objtool warning fixes".

* tag 'mm-stable-2023-02-20-13-37' of git://git.kernel.org/pub/scm/linux/kernel/git/akpm/mm: (505 commits)
  include/linux/migrate.h: remove unneeded externs
  mm/memory_hotplug: cleanup return value handing in do_migrate_range()
  mm/uffd: fix comment in handling pte markers
  mm: change to return bool for isolate_movable_page()
  mm: hugetlb: change to return bool for isolate_hugetlb()
  mm: change to return bool for isolate_lru_page()
  mm: change to return bool for folio_isolate_lru()
  objtool: add UACCESS exceptions for __tsan_volatile_read/write
  kmsan: disable ftrace in kmsan core code
  kasan: mark addr_has_metadata __always_inline
  mm: memcontrol: rename memcg_kmem_enabled()
  sh: initialize max_mapnr
  m68k/nommu: add missing definition of ARCH_PFN_OFFSET
  mm: percpu: fix incorrect size in pcpu_obj_full_size()
  maple_tree: reduce stack usage with gcc-9 and earlier
  mm: page_alloc: call panic() when memoryless node allocation fails
  mm: multi-gen LRU: avoid futile retries
  migrate_pages: move THP/hugetlb migration support check to simplify code
  migrate_pages: batch flushing TLB
  migrate_pages: share more code between _unmap and _move
  ...
2023-02-23 17:09:35 -08:00
Linus Torvalds
17bbc46fc9 gpio updates for v6.3
Core GPIOLIB:
 - drop several OF interfaces after moving a significant part of the code to
   using software nodes
 - remove more interfaces referring to the global GPIO numberspace that we're
   getting rid of
 - improvements in the gpio-regmap library
 - add helper for GPIO device reference counting
 - remove unused APIs
 - minor tweaks like sorting headers alphabetically
 
 Extended support in existing drivers:
 - add support for Tegra 234 PMC to gpio-tegra186
 
 Driver improvements:
 - migrate the 104-dio/idi family of drivers to using the regmap-irq API
 - migrate gpio-i8255 and gpio-mm to the GPIO regmap API
 - clean-ups in gpio-pca953x
 - remove duplicate assignments of of_gpio_n_cells in gpio-davinci, gpio-ge,
   gpio-xilinx, gpio-zevio and gpio-wcd934x
 - improvements to gpio-pcf857x: implement get/set_multiple callbacks, use
   generic device properties instead of OF + minor tweaks
 - fix OF-related header includes and Kconfig dependencies in gpio-zevio
 - dynamically allocate the GPIO base in gpio-omap
 - use a dedicated printf specifier for printing fwnode info in gpio-sim
 - use dev_name() for the GPIO chip label in gpio-vf610
 - other minor tweaks and fixes
 
 Documentation:
 - remove mentions of legacy API from comments in various places
 - convert the DT binding documents to YAML schema for Fujitsu MB86S7x, Unisoc
   GPIO and Unisoc EIC
 - document the Unisoc UMS512 controller in DT bindings
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Merge tag 'gpio-updates-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux

Pull gpio updates from Bartosz Golaszewski:
 "A rather small update, there are no new drivers, just improvements and
  refactoring in existing ones.

  Thanks to migrating of several drivers to using generalized APIs and
  dropping of OF interfaces in favor of using software nodes we're
  actually removing more code than we're adding.

  Core GPIOLIB:
   - drop several OF interfaces after moving a significant part of the
     code to using software nodes
   - remove more interfaces referring to the global GPIO numberspace
     that we're getting rid of
   - improvements in the gpio-regmap library
   - add helper for GPIO device reference counting
   - remove unused APIs
   - minor tweaks like sorting headers alphabetically

  Extended support in existing drivers:
   - add support for Tegra 234 PMC to gpio-tegra186

  Driver improvements:
   - migrate the 104-dio/idi family of drivers to using the regmap-irq
     API
   - migrate gpio-i8255 and gpio-mm to the GPIO regmap API
   - clean-ups in gpio-pca953x
   - remove duplicate assignments of of_gpio_n_cells in gpio-davinci,
     gpio-ge, gpio-xilinx, gpio-zevio and gpio-wcd934x
   - improvements to gpio-pcf857x: implement get/set_multiple callbacks,
     use generic device properties instead of OF + minor tweaks
   - fix OF-related header includes and Kconfig dependencies in
     gpio-zevio
   - dynamically allocate the GPIO base in gpio-omap
   - use a dedicated printf specifier for printing fwnode info in
     gpio-sim
   - use dev_name() for the GPIO chip label in gpio-vf610
   - other minor tweaks and fixes

  Documentation:
   - remove mentions of legacy API from comments in various places
   - convert the DT binding documents to YAML schema for Fujitsu
     MB86S7x, Unisoc GPIO and Unisoc EIC
   - document the Unisoc UMS512 controller in DT bindings"

* tag 'gpio-updates-for-v6.3' of git://git.kernel.org/pub/scm/linux/kernel/git/brgl/linux: (54 commits)
  gpio: sim: Use %pfwP specifier instead of calling fwnode API directly
  gpio: tegra186: remove unneeded loop in tegra186_gpio_init_route_mapping()
  gpiolib: of: Move enum of_gpio_flags to its only user
  gpio: mvebu: Use IS_REACHABLE instead of IS_ENABLED for CONFIG_PWM
  gpio: zevio: Add missing header
  gpio: Get rid of gpio_to_chip()
  gpio: pcf857x: Drop unneeded explicit casting
  gpio: pcf857x: Make use of device properties
  gpio: pcf857x: Get rid of legacy platform data
  gpio: rockchip: Do not mention legacy API in the code
  gpio: wcd934x: Remove duplicate assignment of of_gpio_n_cells
  gpio: zevio: Use proper headers and drop OF_GPIO dependency
  gpio: zevio: Remove duplicate assignment of of_gpio_n_cells
  gpio: xilinx: Remove duplicate assignment of of_gpio_n_cells
  dt-bindings: gpio: Add compatible string for Unisoc UMS512
  dt-bindings: gpio: Convert Unisoc EIC controller binding to yaml
  dt-bindings: gpio: Convert Unisoc GPIO controller binding to yaml
  gpio: ge: Remove duplicate assignment of of_gpio_n_cells
  gpio: davinci: Remove duplicate assignment of of_gpio_n_cells
  gpio: omap: use dynamic allocation of base
  ...
2023-02-22 11:01:17 -08:00
Mike Rapoport (IBM)
e5080a9677 mm, arch: add generic implementation of pfn_valid() for FLATMEM
Every architecture that supports FLATMEM memory model defines its own
version of pfn_valid() that essentially compares a pfn to max_mapnr.

Use mips/powerpc version implemented as static inline as a generic
implementation of pfn_valid() and drop its per-architecture definitions.

[rppt@kernel.org: fix the generic pfn_valid()]
  Link: https://lkml.kernel.org/r/Y9lg7R1Yd931C+y5@kernel.org
Link: https://lkml.kernel.org/r/20230129124235.209895-5-rppt@kernel.org
Signed-off-by: Mike Rapoport (IBM) <rppt@kernel.org>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Guo Ren <guoren@kernel.org>		[csky]
Acked-by: Huacai Chen <chenhuacai@loongson.cn>	[LoongArch]
Acked-by: Stafford Horne <shorne@gmail.com>	[OpenRISC]
Acked-by: Michael Ellerman <mpe@ellerman.id.au>	[powerpc]
Reviewed-by: David Hildenbrand <david@redhat.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Cc: Brian Cain <bcain@quicinc.com>
Cc: "David S. Miller" <davem@davemloft.net>
Cc: Dinh Nguyen <dinguyen@kernel.org>
Cc: Geert Uytterhoeven <geert@linux-m68k.org>
Cc: Greg Ungerer <gerg@linux-m68k.org>
Cc: Helge Deller <deller@gmx.de>
Cc: Huacai Chen <chenhuacai@kernel.org>
Cc: Matt Turner <mattst88@gmail.com>
Cc: Max Filippov <jcmvbkbc@gmail.com>
Cc: Michal Simek <monstr@monstr.eu>
Cc: Palmer Dabbelt <palmer@dabbelt.com>
Cc: Richard Weinberger <richard@nod.at>
Cc: Rich Felker <dalias@libc.org>
Cc: Russell King <linux@armlinux.org.uk>
Cc: Thomas Bogendoerfer <tsbogend@alpha.franken.de>
Cc: Vineet Gupta <vgupta@kernel.org>
Cc: WANG Xuerui <kernel@xen0n.name>
Cc: Yoshinori Sato <ysato@users.sourceforge.jp>
Signed-off-by: Andrew Morton <akpm@linux-foundation.org>
2023-02-09 16:51:41 -08:00