CONFIG_X86_CMPXCHG on Intel 386 still needed?

Edelhard Becker rtai at
Mon Oct 4 16:48:30 CEST 2004


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?

s o f t w a r e   m a n u f a k t u r     ---     Software, that fits!
OO-Realtime Automation from Embedded-PCs up to distributed SMP Systems
info at    URL:
Fon: ++49+7032/91720-4, Fax: -5,   Neue Strasse 5,  D-71126 Tailfingen

More information about the Rtai mailing list