Re: [PATCH 1/3] powerpc: Relocate prom_init.c on 64bit
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2012-12-05 07:20:37
From: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Date: 2012-12-05 07:20:37
On Wed, 2012-12-05 at 11:07 +1100, Anton Blanchard wrote:
Hi Ben,quoted
My only potential objection was that it might have been cleaner to actually build prom_init.c as a separate binary alltogether and piggy back it...Yeah, I went through a number of options before settling on this one.
Heh, yeah, that what happens when nothing is fully satisfactory... .../...
Build prom_init.c 32 bit, tack it onto the end of the vmlinux and add a trampoline at the start of the vmlinux. This means a vmlinux will be bootable and profiling tools will work against it. Even so it feels gross to me.
It does, might be less gross to have prom_init.c be .incbin'ed in vmlinux like the vdso is ... better than tacking it at the end. Still makes it annoying to debug crashes in prom_init itself. I'll review your patch when I get a chance as the "least bad" solution :-) Cheers, Ben.