Messages in this thread |  | | | Date | Tue, 2 Mar 1999 22:48:44 -0500 | | From | "Daniel J. Frasnelli" <> | | Subject | Re: [patch] PIII/Katmai & FXSAVE support, disable serial-#, 2.2.2 |
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> Regarding this lamearse cpuid thing. Is the off switch and on/off switch? > > Ie can the cpuid be turned on again by any software? Or is it a one time > decision for the life of the cpu or the life of a session (between power-on > and power-off)? It is my understanding that the psn microcode is only reactivated upon system power-up and cannot be activated by a processor reset "in-flight" during a Linux session. In other words, you do not have to worry about the psn as long as you boot into a kernel with the deactivation code. Of course, you could give the ppc or axp architectures a spin and not have to deal with Intel weirdness altogether, but that discussion is neither this mailing list nor topic of discussion :-)
Regards, Daniel --
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