Re: [PATCH 3/8] x86/boot/64: Add support of additional page table level during early boot

From: Kirill A. Shutemov
Date: Wed Apr 12 2017 - 06:18:18 EST


On Tue, Apr 11, 2017 at 07:09:07AM -0700, Andi Kleen wrote:
> > I'll look closer (building proccess it's rather complicated), but my
> > understanding is that VDSO is stand-alone binary and doesn't really links
> > with the rest of the kernel, rather included as blob, no?
> >
> > Andy, may be you have an idea?
>
> There isn't any way I know of to directly link them together. The ELF
> format wasn't designed for that. You would need to merge blobs and then use
> manual jump vectors, like the 16bit startup code does. It would be likely
> complicated and ugly.

Ingo, can we proceed without coverting this assembly to C?

I'm committed to convert it to C later if we'll find reasonable solution
to the issue.

We're pretty late into release cycle. It would be nice to give the whole
thing time in tip/master and -next before the merge window.

Can I repost part 4?

--
Kirill A. Shutemov