Re: [Sablevm-developer] Threading support in SableVM

[David <db...@cs...>]

On Thu, Feb 19, 2004 at 05:10:54PM -0500, Chris Pickett wrote:
>=20
> The WBINVD instruction is a privileged instruction. When the processor=20
> is running in protected mode, the CPL of a program or procedure must be=
=20
> 0 to execute this instruction. This instruction is also a serializing=20
> instruction (see ?Serializing Instructions? in Chapter 8 of the IA-32=20
> Intel Architecture Software Developer?s Manual, Volume 3).

>=20
> I'm not sure if this is a problem, but if not, maybe all that's require=
d=20
> is WBINVD in the C&S for i386?
>=20

Yes, it means it can be executed only in kernel mode that is the
code must be located either in the kernel or a kernel module.

You need to find the instructions for user mode...


David

---

David B=E9langer
Graduate Student
School of Computer Science
McGill University
Office: MC226

Web page:   http://www.cs.mcgill.ca/~dbelan2/
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