Messages in this thread | | | Date | Fri, 10 Dec 2004 14:55:39 -0800 (PST) | From | Linus Torvalds <> | Subject | Re: VM86 interrupt emulation breakage and FIXes for 2.6.x kernel series |
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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.
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