Commit 1efc5638 authored May 17, 2014 by Jeff Bailey Committed by Benjamin Herrenschmidt May 20, 2014

powerpc: Clear ELF personality flag if ELFv2 is not requested.



powerpc: Clear ELF personality flag if ELFv2 is not requested.

The POWER kernel uses a personality flag to determine whether it should
be setting up function descriptors or not (per the updated ABI).  This
flag wasn't being cleared on a new process but instead was being
inherited.  The visible effect was that an ELFv2 binary could not execve
to an ELFv1 binary.

Signed-off-by: Jeff Bailey <jeffbailey@google.com>

 arch/powerpc/include/asm/elf.h | 2 ++
 1 file changed, 2 insertions(+)
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>

parent 21f58507

arch/powerpc/include/asm/elf.h

+2 −0

Original line number	Diff line number	Diff line
		@@ -90,6 +90,8 @@ typedef elf_vrregset_t elf_fpxregset_t;
		do { \
		if (((ex).e_flags & 0x3) == 2) \
		set_thread_flag(TIF_ELF2ABI); \
		else \
		clear_thread_flag(TIF_ELF2ABI); \
		if ((ex).e_ident[EI_CLASS] == ELFCLASS32) \
		set_thread_flag(TIF_32BIT); \
		else \