Re: [Q] ide cdrom in native mode leads to irq storm?
From: Vasily Averin
Date: Fri Oct 27 2006 - 09:19:51 EST
Vasily Averin wrote:
> Vasily Averin wrote:
>> there is node with Intel 7520-based motherboard (MSI-9136), IDE cdrom (hda) and
>> SATA disc and 2.6.19-rc3 linux kernel.
>> When I set IDE controller into the native mode, I get irq storm on the node and
>> this interrupt is disabled. If this interrupt is shared, the other subsystems
>> are stop working too.
>> When I switch the IDE controller into legacy mode, all works correctly.
I have reproduced the same issue on the another node:
Intel 915G chipset,
ICH6 IDE controller,
IDE dvdrom: SONY DVD-ROM DDU1615 (hda),
sata disk: WDC WD1600JS-00M
when I switch IDE controller to the native mode, I see "Disabling IRQ" message,
then kernel generates an oops in create_empty_buffers(), like I've reported earlier.
Could somebody please help me to troubleshoot this issue? I've seen this issue
on the customer nodes and would like to know how I can work-around this issue
without any changes inside motherboard BIOS.
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