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From: Charles Sandmann <sandmann AT clio DOT rice DOT edu>
Newsgroups: comp.os.msdos.djgpp
Subject: Re: DJGPP -how to exec RD/WRMSR
Date: Tue, 08 Jan 2002 13:57:29 CST
Organization: Rice University, Houston TX
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> > How can i execute RDMSR or WRMSR instruction in my DJGPP program?
> > When i do it via direct opcode in inline AT&T assembler it crashes
> > on SIGSEGV. When i execute it in ASM program it works fine.
> > I know that this is some 32bit privileg instruction....

What environment?  DOS?  

Use CWSDPR0 or PMODE to get a ring 0 DPMI provider.