kernel_optimize_test/arch/sh
Yury Norov 942fa985e9 32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option
All new 32-bit architectures should have 64-bit userspace off_t type, but
existing architectures has 32-bit ones.

To enforce the rule, new config option is added to arch/Kconfig that defaults
ARCH_32BIT_OFF_T to be disabled for new 32-bit architectures. All existing
32-bit architectures enable it explicitly.

New option affects force_o_largefile() behaviour. Namely, if userspace
off_t is 64-bits long, we have no reason to reject user to open big files.

Note that even if architectures has only 64-bit off_t in the kernel
(arc, c6x, h8300, hexagon, nios2, openrisc, and unicore32),
a libc may use 32-bit off_t, and therefore want to limit the file size
to 4GB unless specified differently in the open flags.

Signed-off-by: Yury Norov <ynorov@caviumnetworks.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Yury Norov <ynorov@marvell.com>
Signed-off-by: Arnd Bergmann <arnd@arndb.de>
2019-02-19 10:10:05 +01:00
..
boards Kconfig file consolidation for v4.21 2018-12-29 13:40:29 -08:00
boot
cchips
configs sh: sh03: rtc: push down rtc class ops into driver 2018-12-18 16:13:04 +01:00
drivers sh: drivers: convert to SPDX identifiers 2018-12-28 12:11:44 -08:00
include y2038: rename old time and utime syscalls 2019-02-07 00:13:28 +01:00
kernel y2038: add 64-bit time_t syscalls to all 32-bit architectures 2019-02-07 00:13:28 +01:00
lib sh: lib: convert to SPDX identifiers 2018-12-28 12:11:45 -08:00
lib64
math-emu signal/sh: Use force_sig_fault where appropriate 2018-04-25 10:44:09 -05:00
mm Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
oprofile Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
tools kbuild: remove redundant target cleaning on failure 2019-01-06 09:46:51 +09:00
Kconfig 32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option 2019-02-19 10:10:05 +01:00
Kconfig.cpu
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile sh: generate uapi header and syscall table header files 2018-12-19 17:54:40 +01:00