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Subject2.6.{30,31} x86_64 ahci problem - irq 23: nobody cared
the problem appears under heavy system load and slows down the system to
unusable speed.
kernels before .30 were not affected.
irqpoll does not change behavior.

error message from .31:

[157152.418524] irq 23: nobody cared (try booting with the "irqpoll"
[157152.418530] Pid: 1359, comm: cc1plus Tainted: G W
2.6.31-gentoo-blackbit #2
[157152.418532] Call Trace:
[157152.418534] <IRQ> [<ffffffff81066e3f>] ?
[157152.418544] [<ffffffff81066f93>] ? note_interrupt+0x107/0x170
[157152.418547] [<ffffffff81067580>] ? handle_fasteoi_irq+0x8a/0xaa
[157152.418551] [<ffffffff8100d1cf>] ? handle_irq+0x17/0x1d
[157152.418554] [<ffffffff8100c84b>] ? do_IRQ+0x54/0xb2
[157152.418558] [<ffffffff8100b6d3>] ? ret_from_intr+0x0/0xa
[157152.418559] <EOI>
[157152.418560] handlers:
[157152.418562] [<ffffffff813d2a6f>] (ahci_interrupt+0x0/0x426)
[157152.418566] Disabling IRQ #23

bios of the machine is up to date,
i tried all related bios settings, no change.

kernel config for .31
lspci -vxxx
lsusb -v
thread in gentoo forums

please tell me what additional info is needed.
please CC me on replies, i am not subscribed.


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