We believe if a toolchain supports PT_GNU_STACK that it sets the proper
PHDR permissions. Therefor elf_read_implies_exec() should only be true
if we don't see PT_GNU_STACK set.
Signed-off-by: Kumar Gala <ga...@kernel.crashing.org>
---
* Rebased patch on paulus/merge tree which picked up an older patch to fixed
elf_read_implies_exec() on pure PPC32 systems but not in the way we desired.
Paul, lets try this one for .30.
- k
arch/powerpc/include/asm/elf.h | 4 ++--
1 files changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/powerpc/include/asm/elf.h b/arch/powerpc/include/asm/elf.h
index d6b4a12..014a624 100644
--- a/arch/powerpc/include/asm/elf.h
+++ b/arch/powerpc/include/asm/elf.h
@@ -256,11 +256,11 @@ do {
\
* even if we have an executable stack.
*/
# define elf_read_implies_exec(ex, exec_stk) (test_thread_flag(TIF_32BIT) ? \
- (exec_stk != EXSTACK_DISABLE_X) : 0)
+ (exec_stk == EXSTACK_DEFAULT) : 0)
#else
# define SET_PERSONALITY(ex) \
set_personality(PER_LINUX | (current->personality & (~PER_MASK)))
-# define elf_read_implies_exec(ex, exec_stk) (exec_stk != EXSTACK_DISABLE_X)
+# define elf_read_implies_exec(ex, exec_stk) (exec_stk == EXSTACK_DEFAULT)
#endif /* __powerpc64__ */
extern int dcache_bsize;
--
1.6.0.6
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