Re: [uml-devel] tls: set_thread_area failed

[Antoine Martin <antoine@nagafix.co.uk>]

> > > Also, different glibc are more or less happy in using modify_ldt() rather
> > > than set_thread_area() - it seems that latter is better.
> 
> > Ahh, is it planned 
> What?
I was wondering if this was being worked on, (you answered this below)
> > or do I have to make heavily modified distro images? 
> I'm not suggesting that...
Good!

> And, hold on this - Jeff has made a big progress on this, diagnosing what had 
> been happening.
> 
> I'm not sure how well it works, but in the incrementals page there's the new 
> result. Give it a run and tell us the result, if it works it might go in 
> 2.6.15-bs and 2.6.16.
I've tried these patches:
* there was one suspicious offset on:
patching file arch/um/kernel/skas/process_kern.c
Hunk #1 succeeded at 126 (offset 3 lines).

* CC      arch/um/os-Linux/tls.o
arch/um/os-Linux/tls.c: In function `os_set_thread_area':
arch/um/os-Linux/tls.c:22: error: dereferencing pointer to incomplete
type
arch/um/os-Linux/tls.c: In function `os_get_thread_area':
arch/um/os-Linux/tls.c:36: error: dereferencing pointer to incomplete
type
make[1]: *** [arch/um/os-Linux/tls.o] Error 1
make: *** [arch/um/os-Linux] Error 2

with GCC 3.4.4 and GCC 3.3.4

* another /lib vs lib32 vs lib64 issue with pcap when compiling with
SUBARCH=i386 on this Gentoo system I had to add -r /usr/lib32/libpcap.a:
ld -r -dp -o arch/um/drivers/pcap.o arch/um/drivers/pcap_kern.o
arch/um/drivers/pcap_user.o  -m elf_i386
-r /usr/lib32/libpcap.a /usr/lib/gcc-lib/x86_64-pc-linux-gnu/3.3.4/../../../../lib/libpcap.a
Otherwise it moans about linking 64-bit libs with 32-bit... which is
fair enough I guess.

Antoine



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