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| author |   James Hogan <james.hogan@imgtec.com> | 2014-05-01 12:31:14 +0100 |
|---|---|---|
| committer | James Hogan <james.hogan@imgtec.com> | 2014-05-15 00:30:32 +0100 |
| commit | c70458f50cd4271410aa75011f56ffabc0e2d34a (patch) | |
| tree | 797efbbd36e4331f1fd5a51adc449ef0fadf3ef9 /arch/metag | |
| parent | parisc,metag: Do not hardcode maximum userspace stack size (diff) | |
| download | linux-dev-c70458f50cd4271410aa75011f56ffabc0e2d34a.tar.xz linux-dev-c70458f50cd4271410aa75011f56ffabc0e2d34a.zip | |
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 e0d8898d76a7
(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>
Diffstat (limited to 'arch/metag')
| -rw-r--r-- | arch/metag/include/uapi/asm/Kbuild | 2 | ||||
| -rw-r--r-- | arch/metag/include/uapi/asm/resource.h | 7 |
2 files changed, 1 insertions, 8 deletions
diff --git a/arch/metag/include/uapi/asm/Kbuild b/arch/metag/include/uapi/asm/Kbuild index 84e09feb4d54..ab78be2b6eb0 100644 --- a/arch/metag/include/uapi/asm/Kbuild +++ b/arch/metag/include/uapi/asm/Kbuild @@ -4,11 +4,11 @@ include include/uapi/asm-generic/Kbuild.asm header-y += byteorder.h header-y += ech.h header-y += ptrace.h -header-y += resource.h header-y += sigcontext.h header-y += siginfo.h header-y += swab.h header-y += unistd.h generic-y += mman.h +generic-y += resource.h generic-y += setup.h diff --git a/arch/metag/include/uapi/asm/resource.h b/arch/metag/include/uapi/asm/resource.h deleted file mode 100644 index 526d23cc3054..000000000000 --- a/arch/metag/include/uapi/asm/resource.h +++ /dev/null @@ -1,7 +0,0 @@ -#ifndef _UAPI_METAG_RESOURCE_H -#define _UAPI_METAG_RESOURCE_H - -#define _STK_LIM_MAX (1 << 28) -#include <asm-generic/resource.h> - -#endif /* _UAPI_METAG_RESOURCE_H */ |