OpenCloudOS-Kernel/arch/metag
James Hogan c70458f50c metag: Remove _STK_LIM_MAX override
Meta overrode _STK_LIM_MAX (the default RLIMIT_STACK hard limit) to
256MB, apparently in an attempt to prevent setup_arg_pages's
STACK_GROWSUP code from choosing the maximum stack size of 1GB, which is
far too large for Meta's limited virtual address space and hits a BUG_ON
(stack_top is usually 0x3ffff000).

However the commit "metag: Reduce maximum stack size to 256MB" reduces
the absolute stack size limit to a safe value for metag. This allows the
default _STK_LIM_MAX override to be removed, bringing the default
behaviour in line with all other architectures. Parisc in particular
recently removed their override of _STK_LIMT_MAX in commit e0d8898d76
(parisc: remove _STK_LIM_MAX override) since it subtly affects stack
allocation semantics in userland. Meta's uapi/asm/resource.h can now be
removed and switch to using generic-y.

Suggested-by: Helge Deller <deller@gmx.de>
Signed-off-by: James Hogan <james.hogan@imgtec.com>
Cc: linux-metag@vger.kernel.org
Cc: John David Anglin <dave.anglin@bell.net>
2014-05-15 00:30:32 +01:00
..
boot metag: tz1090: instantiate gpio-tz1090-pdc 2013-07-22 10:55:31 +01:00
configs metag: minimal TZ1090 (Comet) SoC infrastructure 2013-06-13 12:14:07 +01:00
include metag: Remove _STK_LIM_MAX override 2014-05-15 00:30:32 +01:00
kernel Most of the changes were largely clean ups, and some documentation. 2014-04-03 10:26:31 -07:00
lib metag: move EXPORT_SYMBOL(csum_partial) to metag_ksyms.c 2013-07-04 10:00:02 +01:00
mm memblock: make memblock_set_node() support different memblock_type 2014-01-21 16:19:44 -08:00
oprofile metag: OProfile support 2013-03-15 13:21:05 +00:00
tbx metag: handle low level kicks directly 2013-11-06 10:40:02 +00:00
Kconfig Kconfig: rename HAS_IOPORT to HAS_IOPORT_MAP 2014-04-07 16:36:11 -07:00
Kconfig.debug consolidate per-arch stack overflow debugging options 2013-07-04 11:25:39 -07:00
Kconfig.soc metag: tz1090: select and instantiate gpio-tz1090 2013-07-22 10:55:31 +01:00
Makefile metag: minimal TZ1090 (Comet) SoC infrastructure 2013-06-13 12:14:07 +01:00