[PATCH] powerpc: Fix up elf_read_implies_exec() usage

[Kumar Gala]

On Apr 28, 2009, at 8:08 AM, Kumar Gala wrote:

> On ppc64 we implemented elf_read_implies_exec() for 32-bit binaries
> because old toolchains had bugs with regards to marking PHDRs as
> executable that needed to be.  For some reason we didn't do this on
> ppc32 builds.  This hadn't been an issue until recent changes to I$/D$
> handling that impacted the per-page exec handling on embedded PPC.
>
> Additionally we believe if a toolchain supported PT_GNU_STACK that it
> sets the proper PHDR permissions so we only have  
> elf_read_implies_exec()
> true if we don't see PT_GNU_STACK set.
>
> Signed-off-by: Kumar Gala <galak at kernel.crashing.org>
> ---
>
> Paul, please pick this up for 2.6.30 and send onto linus.
>
> - k

oops.. didn't see you grabbed the old one already.  I'll send a new  
patch based on it to switch to testing against EXSTACK_DEFAULT

- k