linux-stable.git/arch/mips/lib, branch v6.14

mips/crc32: expose CRC32 functions through lib

2024-12-02T01:23:01+00:00

Move the mips CRC32 assembly code into the lib directory and wire it up
to the library interface.  This allows it to be used without going
through the crypto API.  It remains usable via the crypto API too via
the shash algorithms that use the library interface.  Thus all the
arch-specific "shash" code becomes unnecessary and is removed.

Note: to see the diff from arch/mips/crypto/crc32-mips.c to
arch/mips/lib/crc32-mips.c, view this commit with 'git show -M10'.

Reviewed-by: Ard Biesheuvel 
Link: https://lore.kernel.org/r/20241202010844.144356-8-ebiggers@kernel.org
Signed-off-by: Eric Biggers

mips: implement xor_unlock_is_negative_byte

2023-10-18T21:34:17+00:00

Inspired by the mips test_and_change_bit(), this will surely be more
efficient than the generic one defined in filemap.c

Link: https://lkml.kernel.org/r/20231004165317.1061855-11-willy@infradead.org
Signed-off-by: Matthew Wilcox (Oracle) 
Cc: Albert Ou 
Cc: Alexander Gordeev 
Cc: Andreas Dilger 
Cc: Christian Borntraeger 
Cc: Christophe Leroy 
Cc: Geert Uytterhoeven 
Cc: Heiko Carstens 
Cc: Ivan Kokshaysky 
Cc: Matt Turner 
Cc: Michael Ellerman 
Cc: Nicholas Piggin 
Cc: Palmer Dabbelt 
Cc: Paul Walmsley 
Cc: Richard Henderson 
Cc: Sven Schnelle 
Cc: "Theodore Ts'o" 
Cc: Thomas Bogendoerfer 
Cc: Vasily Gorbik 
Signed-off-by: Andrew Morton

mips: replace #include with #include

2023-08-15T08:22:23+00:00

Commit ddb5cdbafaaa ("kbuild: generate KSYMTAB entries by modpost")
deprecated , which is now a wrapper of .

Replace #include  with #include .

After all the  lines are converted,  and
 will be removed.

Signed-off-by: Masahiro Yamada 
Reviewed-by: Philippe Mathieu-Daudé 
Signed-off-by: Thomas Bogendoerfer

MIPS: Simplify bswapdi2() and bswapsi2()

2022-09-30T14:50:00+00:00

Use macro definitions ___constant_swab64 and ___constant_swab32
to simplify __bswapdi2() and __bswapsi2().

Signed-off-by: Tiezhu Yang 
Signed-off-by: Thomas Bogendoerfer

MIPS: Silence missing prototype warning

2022-09-30T14:49:49+00:00

Silence the following two warnings when make W=1:

  CC      arch/mips/lib/bswapsi.o
arch/mips/lib/bswapsi.c:5:22: warning: no previous prototype for '__bswapsi2' [-Wmissing-prototypes]
 unsigned int notrace __bswapsi2(unsigned int u)
                      ^~~~~~~~~~
  CC      arch/mips/lib/bswapdi.o
arch/mips/lib/bswapdi.c:5:28: warning: no previous prototype for '__bswapdi2' [-Wmissing-prototypes]
 unsigned long long notrace __bswapdi2(unsigned long long u)
                            ^~~~~~~~~~
  AR      arch/mips/lib/built-in.a

Reported-by: kernel test robot 
Signed-off-by: Tiezhu Yang 
Signed-off-by: Thomas Bogendoerfer

MIPS: Remove VR41xx support

2022-07-14T09:52:29+00:00

No (active) developer owns this hardware, so let's remove Linux support.

Signed-off-by: Thomas Bogendoerfer

MIPS: Only use current_stack_pointer on GCC

2022-03-14T14:02:53+00:00

Unfortunately, Clang did not have support for "sp" as a global register
definition, and was crashing after the addition of current_stack_pointer.
This has been fixed in Clang 14, but earlier Clang versions need to
avoid this code, so add a versioned test and revert back to the
open-coded asm instances. Fixes Clang build error:

fatal error: error in backend: Invalid register name global variable

Fixes: 200ed341b864 ("mips: Implement "current_stack_pointer"")
Reported-by: Nathan Chancellor 
Reviewed-by: Nathan Chancellor 
Link: https://lore.kernel.org/lkml/YikTQRql+il3HbrK@dev-arch.thelio-3990X
Cc: Thomas Bogendoerfer 
Cc: Marc Zyngier 
Cc: Guenter Roeck 
Cc: Yanteng Si 
Cc: linux-mips@vger.kernel.org
Signed-off-by: Kees Cook 
Reviewed-by: Nick Desaulniers 
Signed-off-by: Thomas Bogendoerfer

mips: Implement "current_stack_pointer"

2022-03-01T15:57:55+00:00

To follow the existing per-arch conventions replace open-coded uses
of asm "sp" as "current_stack_pointer". This will let it be used in
non-arch places (like HARDENED_USERCOPY).

Cc: Thomas Bogendoerfer 
Cc: Marc Zyngier 
Cc: Guenter Roeck 
Cc: Mark Rutland 
Cc: Yanteng Si 
Cc: linux-mips@vger.kernel.org
Signed-off-by: Kees Cook 
Signed-off-by: Thomas Bogendoerfer

MIPS: Remove TX39XX support

2022-03-01T09:07:22+00:00

No (active) developer owns this hardware, so let's remove Linux support.

Signed-off-by: Thomas Bogendoerfer 
Acked-by: Guenter Roeck 
Reviewed-by: Geert Uytterhoeven 
Tested-by: Geert Uytterhoeven 
Acked-by: Atsushi Nemoto

MIPS: remove asm/war.h

2022-02-22T08:35:49+00:00

The major part for workaround handling has already moved to config
options. This change replaces the remaining defines by already
available config options and gets rid of war.h

Signed-off-by: Thomas Bogendoerfer