whats so bad about a ring3 stack

[earlz]

Well i was thinking about me being told "you need a tss entry to tell where the kernel stack is" but really cant i use the user stack then do a "software stack switch"

[Colonel Kernel]

Ask yourself this question: "What does the CPU do when an interrupt occurs while it's running in ring 3?"

If you don't know the answer, consult the Intel manuals.

[earlz]

irc it push's cs,eip,ss,esp(not in that order of course) and loads cs and eip from idt
I'm not talking about ints but rather irq's really but still I dont see any problem with that

[Colonel Kernel]

Ask yourself this question: Why would the CPU bother pushing ss and esp if it wasn't planning to switch stacks...?

Also, what you call "irqs" and what I call "interrupts" are the same thing.

[earlz]

yea gues you got a point there

and so im on my way to get a tss ;D