From c70458f50cd4271410aa75011f56ffabc0e2d34a Mon Sep 17 00:00:00 2001 From: James Hogan Date: Thu, 1 May 2014 12:31:14 +0100 Subject: [PATCH] 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 Signed-off-by: James Hogan Cc: linux-metag@vger.kernel.org Cc: John David Anglin --- arch/metag/include/uapi/asm/Kbuild | 2 +- arch/metag/include/uapi/asm/resource.h | 7 ------- 2 files changed, 1 insertion(+), 8 deletions(-) delete mode 100644 arch/metag/include/uapi/asm/resource.h 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 - -#endif /* _UAPI_METAG_RESOURCE_H */