Messages in this thread | | | Date | Wed, 18 Feb 1998 20:51:16 +0100 (CET) | From | Andrea Arcangeli <> | Subject | Re: Reproducible crash under 2.1.86 [solved and fixed] |
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On Wed, 18 Feb 1998, Alan Cox wrote:
>> >to make sure no DMA handling functions are getting re-entered in error. Also >> What do you mean with "re-entered in error"? > >As in called when they shouldnt be perhaps by two DMA drivers fighting over >the DMA controller when they should not
I have not yet understand very well, my english is not so good ;-).
root@arca:/home/andrea# cat /proc/dma 1: SoundBlaster8 4: cascade 5: SoundBlaster16
As you see the only device dma capable is my sb. Parallel Port is in EPP. The dma works fine. The only problem is related to disable_dma().
>> Should I replace my motherboard again? > >If your disks are set to not use DMA does your board hang ? - Im trying >to work out if this is code logic or hardware
No problem. After applyed my two patch all works fine. I am running a
cp /dev/hda /dev/null & find / >/dev/null & while :; do hdparm -d1 /dev/hda; hdparm -d0 /dev/hda; done >/dev/null &
while I am playing an mp3 or running xquake. No other problems at all. The lock _was_ also very easy reproducible since it happen in 3/4 sec.
Andrea[s] Arcangeli
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