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linux-next/arch/nds32
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
..
boot nds32: Perf porting 2018-11-06 18:01:40 +08:00
configs nds32: defconfig 2018-02-22 10:44:35 +08:00
include arch: remove redundant UAPI generic-y defines 2019-01-06 10:22:15 +09:00
kernel Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
lib nds32: Fix the symbols undefined issue by exporting them. 2018-05-23 13:26:20 +08:00
math-emu nds32: support denormalized result through FP emulator 2018-11-22 18:13:27 +08:00
mm Remove 'type' argument from access_ok() function 2019-01-03 18:57:57 -08:00
Kconfig 32-bit userspace ABI: introduce ARCH_32BIT_OFF_T config option 2019-02-19 10:10:05 +01:00
Kconfig.cpu nds32: support hardware prefetcher 2018-11-22 18:13:51 +08:00
Kconfig.debug Kconfig: consolidate the "Kernel hacking" menu 2018-08-02 08:06:48 +09:00
Makefile nds32: Support FP emulation 2018-11-22 18:13:21 +08:00