CONFIG_X86_CMPXCHG on Intel 386 still needed?

Edelhard Becker rtai at software-manufaktur.de
Mon Oct 4 16:48:30 CEST 2004


Hi,

we want to use RTAI on low-cost 386EX based boards. In 3.x, the
availability of CONFIG_X86_CMPXCHG in the kernels .config is checked
by RTAIs configure.  From the comments in arch/i386/kernel/emu.c i'd
expect that this check is not necessary when the kernel option
CONFIG_X86_EMU486 is set. With the attached patch to RTAIs (3.1)
configure at least it compiles fine. So is the check for "hardware-
cmpxchg()" still needed?

Greetings,
Edelhard
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