[Gumstix-users] Astlinux's buildroot x gumstix's one

[Alexandre P. N. <al...@om...>]

Hi,

I tried to analyze what's different between astlinux's buildroot and 
gumstix's one in an attempt to understand the problem.

After eliminating binutils 2.16.1 x 2.17 builds, and verifying uclibc is 
the same version on both (with the same patches), the main remaining 
factor was the kernel. I built a 2.6.17 on gumstix's buildroot (had to 
borrow the kernel-patches from astlinux, they're from previous gumstix 
versions) and voila, no more asterisk nor dynamic iptables problems, and 
my little test app also stopped crashing.

So now it's finding what the hell could have changed between 2.6.17 and 
2.6.18 that could justify this behavior.

Looking at the 2.6.17 -> 2.6.18 mainstream patch, I see some xscale 
cache changes supposed to fix things and not introduce some bugs. They 
seem correct after taking a glimpse at them, but perhaps it requires 
digging deeper.

I'm tempted to selectively and individually reverse some changes, and 
see if I can spot at the one stopping the show, then propose to Craig to 
host a patch against 2.6.18 while we wait for a 2.6.19 solution or 
something.

By the way, I've built 2.6.17 with my 2.6.18's config, so that I could 
be (pretty) sure it wasn't some configuration change that caused the 
misbehavior.

I won't do that for a bit since I'm getting busy with other stuff, but I 
figured it was a good thing to point up in case someone has both the 
time and the will...

- Alexandre