[ipxe-devel] [PATCH] Format HTTP Range with unsigned long long

[Linus Lüssing]

Hi Michael,

Thanks for the explanations!

On Wed, May 24, 2017 at 04:29:23PM +0100, Michael Brown wrote:
> We could plausibly extend format_decimal() to handle unsigned longs (%lu or
> %zu) by factoring out the negation code.  This would probably be a smaller
> overall size impact than dragging in the 64-bit division code.

So, hm, this would increase the maximum image size for sanboot/http from
2GB (2^31) to 4GB (2^32) for 32bit builds?

What size impact are we roughly talking about for the 64-bit
division code? Would it be possible to make this a configurable build
option?

Regards, Linus

PS: I was testing with the image produced via a "make
bin/undionly.kpxe" on an amd64 based system (an AMD Sempron,
8GB RAM). undionly.kpxe is always a 32bit build, right? So an
unsigned long would not be sufficient for me for images larger
than 4GB, even though my system architecture is 64bit, would it?