Messages in this thread | | | Date | Tue, 10 Aug 2004 15:16:28 +0200 | From | Ingo Molnar <> | Subject | Re: 2.6.8-rc3-mm2 |
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* Russell King <rmk+lkml@arm.linux.org.uk> wrote:
> Except serial console IO does not generate _any_ IRQ traffic - it > purposely disables IRQs on the device before starting any IO to > prevent any user-level IO interfering with the console output.
indeed - but it does generate _some_ IRQ traffic still:
3: 251 IO-APIC-edge serial
this is from a box that uses the serial line only for the kernel console.
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