Messages in this thread | | | Date | Wed, 24 Jul 2002 15:58:12 -0400 (EDT) | From | Bill Davidsen <> | Subject | Safety of IRQ during i/o |
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The man page for hdparm is a bit dated on the -u flag allowing ints during i/o, warning about the dangers of using kernels older than 2.0.13. No problem there, but what are the more current implications?
I would think that this would be safe when using DMA, and likely to be safe for PIO and more recent chipsets, but I wouldn't want to actually tell anyone that.
Therefore: 1 - the man page would benefit from an update regarding recent kernels from this millenium, if only to reassure readers. 2 - any better way to tell if allowing ints will cause problems than just to try it? Not desirable on large machines, but it was off and I am seeing serial problems on the OOB access modem.
-- bill davidsen <davidsen@tmr.com> CTO, TMR Associates, Inc Doing interesting things with little computers since 1979.
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