Re: [PATCH prototype] [0/8] Predictive bitmaps for ELF executables

Andi Kleen
2008-03-22T07:15:20Z

On Fri, Mar 21, 2008 at 09:36:51PM -0700, Ulrich Drepper wrote:
> On Fri, Mar 21, 2008 at 10:26 AM, Andi Kleen <andi@firstfloor.org> wrote:
> > Concrete suggestions please.
>
> I already spelled it out. Add a new program header entry, point it to
> a bit array large enough to cover all loadable segments.

Ah that's easy, the program header is already supported in the kernel code
(PT_PRESENT_BITMAP)

The additional SHDR is just there for easier testing/migration.
>
> It is not worth creating problems with this invalid extension just for

You still didn't say why it was invalid.

Anyways I disagree on the value of supporting old binaries. I believe
it is important.

-Andi