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powerpc/32: Don't clobber personality flags on exec 

Now that ppc32 implements address randomization it also wants to inherit
personality flags like ADDR_NO_RANDOMIZE across exec, for things like
`setarch ppc -R' to work.  But the ppc32 version of SET_PERSONALITY
forcefully sets PER_LINUX, clearing all personality flags.  So be
careful about preserving the flags.

Signed-off-by: Andreas Schwab <schwab@linux-m68k.org>
Signed-off-by: Paul Mackerras <paulus@samba.org>
This commit is contained in:
Andreas Schwab 2009-04-16 06:22:01 +00:00 committed by Paul Mackerras
parent 24f1ce803c
commit 59e4c3a2fe
1 changed files with 2 additions and 1 deletions
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3
arch/powerpc/include/asm/elf.h
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@ -258,7 +258,8 @@ do { \
# define elf_read_implies_exec(ex, exec_stk) (test_thread_flag(TIF_32BIT) ? \
(exec_stk != EXSTACK_DISABLE_X) : 0)
#else
# define SET_PERSONALITY(ex) set_personality(PER_LINUX)
# define SET_PERSONALITY(ex) \
set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
#endif /* __powerpc64__ */
extern int dcache_bsize;