Re: VM86 interrupt emulation breakage and FIXes for 2.6.x kernelseries

[Linus Torvalds]

On Fri, 10 Dec 2004, Alan Cox wrote:
> 
> You can't disable_irq and return to user space - the IRQ may be shared
> by a device needed to make user space progress. 

The vm86 interrupt does not allow sharing. And it really _has_ to be 
disabled until user mode has cleared the irq source, or you'll have a very 
dead machine.

		Linus
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