Re: named illegal instruction on i486

[christos%astron.com@localhost (Christos Zoulas)]

In article <lj5u1k$qsm$1%ger.gmane.org@localhost>,
Christos Zoulas <christos%astron.com@localhost> wrote:
>In article <69B2BF00-4BDB-4876-843E-CF0B9C5DCD4A%azeotrope.org@localhost>,
>Dave Huang  <khym%azeotrope.org@localhost> wrote:
>>
>>On Apr 22, 2014, at 6:43, Christos Zoulas <christos%astron.com@localhost> 
>>wrote:
>>
>>> In article <20140422025233.086696b3.frank%phoenix.owl.de@localhost>,
>>> Frank Wille  <frank%phoenix.owl.de@localhost> wrote:
>>>> The disassembly shows that the CPU fails on executing the instruction
>>>> "lock cmpxchg...", which is only available for Pentium CPUs and higher.
>>>> 
>>>> Any idea what went wrong? Is it a general problem in libc or was named
>>>> built for >=Pentium?
>>> 
>>> Looks that way (our assembly files are written for >= pentium). Until
>>> that gets fixes, you can turn off NAMED_USE_PTHREADS.
>>
>>I thought cmpxchg was available on the 486 (but not on the 386)...
>
>that's cmpxchg8b...
>The easiest way is to comment out __HAVE_ATOMIC64_OPS in
>/usr/src/sys/arch/i386/include/types.h and rebuild everything.

That breaks rumpzfs which I ``fixed'' on head.

christos