Thanks for your reply, Andi.
>> We have a proprietary PCI board installed in a (UP) system with an ASUS
P4PE
>> motherboard (uses Intel 845PE chipset). This system is running Red Hat
9.0
>Have you checked the 845 errata sheets on the Intel website?
>Perhaps it is some known hardware bug.
>One thing you could try is to use Local APIC / IO APIC interrupt processing
>instead of 8259.
Our hardware engineer has combed the Intel and ASUS websites, but found
nothing. I'll give the APIC a try and see if I get different results and
let you know.
>>
>> /* start timer */
>> dmatimer.expires = jiffies + 0.5*HZ;
>That's a serious bug. You cannot use floating point in the kernel.
>It will corrupt the FP state of the user process.
HZ on the INTEL platform is 100, so this should simply add 50 to the current
value of jiffies. Besides, assigning the value to the unsigned int field
(expires) will truncate it to an integer anyway. Is there a more
appropriate way to handle a short timeout?
Thanks,
Kathy
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This archive was generated by hypermail 2b29 : Tue Jul 15 2003 - 22:00:57 EST