Re: intel-lpss 0000:00:15.1: idma64_irq: status=0x0, millions of lines spamming journal

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On Tue, Apr 25, 2023, at 3:01 AM, Mika Westerberg wrote:
> Hi Chris,
>
> Would you be able to bisect this to a mainline commit?

Difficult in the near term.


> At least looking at the changes between v6.3-rc1 and v6.3-rc7 there is
> virtually nothing to any of these drivers involved. The log itself looks
> like:
>
>        dev_vdbg(idma64->dma.dev, "%s: status=%#x\n", __func__, status);
>
> so this should not be enabled at all unless CONFIG_DMADEVICES_VDEBUG is
> set to y which seems odd in distro kernel.

$ grep DMADEVICES /boot/config-6.3.0-0.rc2.20230315git6015b1aca1a2.25.fc39.x86_64+debug 
CONFIG_DMADEVICES=y
CONFIG_DMADEVICES_DEBUG=y
# CONFIG_DMADEVICES_VDEBUG is not set
$ grep DMADEVICES /boot/config-6.3.0-0.rc2.20230317git38e04b3e4240.27.fc39.x86_64+debug 
CONFIG_DMADEVICES=y
CONFIG_DMADEVICES_DEBUG=y
CONFIG_DMADEVICES_VDEBUG=y

It follows the bug, though I'm not sure if this is the true source of the problem?


> Also what does /proc/interrupts show for this?

Attached to bug report.
https://bugzilla-attachments.redhat.com/attachment.cgi?id=1959838



-- 
Chris Murphy



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