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From: Glaux <glaux AT centrum DOT cz>
Newsgroups: comp.os.msdos.djgpp
Subject: running ring0 code under DJGPP
Date: Wed, 29 Aug 2007 13:38:34 -0700
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To: djgpp AT delorie DOT com
DJ-Gateway: from newsgroup comp.os.msdos.djgpp
Reply-To: djgpp AT delorie DOT com

Hi,
any idea how to run privilegen instruction (rdmsr/wrmsr) from djgpp
program at ring0 _without_ use of special modified cwsdpmi? I use
__dpmi_simulate_real_mode_procedure_retf() to run my code swithed to
RM but when it is in V86 mode especially EMM386 it crashed because
EMM386 is stupid. QEMM386 can handle this.
Under win9x/mingw32 I use  special trick to setup a callgate in GDT
for running my ring0 code and it works well, I tried to do something
similar under DJGPP but always got GPF :( Is there a way to hack ring0
under DJGPP+EMM386+CWSDPMI?