kernel/git/stable/linux.git/arch/s390/lib/mem.S, branch master

s390/string: Convert memset(16|32|64)() to C

2026-06-10T14:55:21+00:00

Convert memset(16|32|64)() from assembler to C, which should make it easier to read and change, if required. And it allows the compiler to optimize the code, and use different instructions, except for the used inline assemblies. Reviewed-by: Juergen Christ Signed-off-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/string: Convert memcpy() to C

2026-06-10T14:55:21+00:00

Convert memcpy() from assembler to C, which should make it easier to read and change, if required. And it allows the compiler to optimize the code, and use different instructions, except for the used inline assemblies. Reviewed-by: Juergen Christ Signed-off-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/string: Convert memset() to C

2026-06-10T14:55:21+00:00

Convert memset() from assembler to C, which should make it easier to read and change, if required. And it allows the compiler to optimize the code, and use different instructions, except for the used inline assemblies. Reviewed-by: Juergen Christ Signed-off-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/string: Convert memmove() to C

2026-06-10T14:55:20+00:00

Convert memmove() from assembler to C, which should make it easier to read and change, if required. And it allows the compiler to optimize the code, and use different instructions, except for the used inline assemblies. Reviewed-by: Juergen Christ Signed-off-by: Heiko Carstens Signed-off-by: Alexander Gordeev

s390/lib: Use exrl instead of ex in string functions

2024-12-17T11:46:13+00:00

exrl is present in all machines currently supported in the linux kernel, therefore prefer it over ex. This saves one instruction and doesn't need an additional register to hold the address of the target instruction. Reviewed-by: Heiko Carstens Signed-off-by: Sven Schnelle Signed-off-by: Alexander Gordeev

s390: replace #include with #include

2023-08-09T13:20:50+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 Link: https://lore.kernel.org/r/20230806151641.394720-2-masahiroy@kernel.org Signed-off-by: Heiko Carstens

s390/lib: use SYM* macros instead of ENTRY(), etc.

2023-04-19T15:24:16+00:00

Consistently use the SYM* family of macros instead of the deprecated ENTRY(), ENDPROC(), etc. family of macros. Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390/kasan: remove override of mem*() functions

2023-04-19T15:24:16+00:00

The kasan mem*() functions are not used anymore since s390 has switched to GENERIC_ENTRY and commit 69d4c0d32186 ("entry, kasan, x86: Disallow overriding mem*() functions"). Therefore remove the now dead code, similar to x86. While at it also use the SYM* macros in mem.S. Signed-off-by: Heiko Carstens Signed-off-by: Vasily Gorbik

s390: add missing ENDPROC statements to assembler functions

2019-05-02T11:54:11+00:00

The assembler code in arch/s390 misses proper ENDPROC statements to properly end functions in a few places. Add them. Signed-off-by: Martin Schwidefsky

s390/kasan: replace some memory functions

2018-10-09T09:21:18+00:00

Follow the common kasan approach: "KASan replaces memory functions with manually instrumented variants. Original functions declared as weak symbols so strong definitions in mm/kasan/kasan.c could replace them. Original functions have aliases with '__' prefix in name, so we could call non-instrumented variant if needed." Signed-off-by: Vasily Gorbik Signed-off-by: Martin Schwidefsky