LeVA wrote:
2004. június 24. 15:54,
John Summerfield <[EMAIL PROTECTED]> -> [EMAIL PROTECTED]:
On many/most Linux systems, it seems you need to turn on DMA first:
hdparm -d1 -u1 /dev/cdrom
What does that unmaskirq mean?
On IA32 systems, interupts can be turned off (masked), potentially for long (by computer standards) periods. Typically this happens when an interrupt occurs (it's part of the interrupt handling), and the interrupt handler turns them back on when it's finished saving the system state and generally sorted itself out. However, there has been some buggy hardware around and so the drivers take a more conservative approach, one that isn't good for performance but also doesn't crash those buggy systems.
"-u1" turns off that conservative approach.
--
Cheers John
-- spambait [EMAIL PROTECTED] [EMAIL PROTECTED]
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