Messages in this thread | | | Date | Wed, 12 Feb 2003 10:57:40 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: Re: [Bug 350] New: i386 context switch very slow compared to 2.4 due to wrmsr (performance) |
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mika.penttila@kolumbus.fi wrote: > BTW, why is sysenter supposed to be disabled while in vm86?
The only reason is to make vm86-mode more "compatible". In other words, trap the GP that happens if SYSENTER_CS is 0, and make sure vm86 mode works the way it historically did.
We can choose to say "screw it", I guess, and just see if it actually breaks anything.
Linus
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