Re: Serious AMD-Vi(?) issue

[Elliott Mitchell <ehem+xen@xxxxxxx>]

I'm rather surprised it was so long before the next system restart.  
Seems a quiet period as far as security updates go.  Good news is I made
several new observations, but I don't know how valuable these are.

On Mon, May 13, 2024 at 10:44:59AM +0200, Roger Pau Monné wrote:
> 
> Does booting with `iommu=no-intremap` lead to any issues being
> reported?

On boot there was in fact less.  Notably the "AMD-Vi" messages haven't
shown up at all.  I haven't stressed it very much yet, but previous
boots a message showed up the moment the MD-RAID1 driver was loaded.


I am though seeing two different messages now:

(XEN) CPU#: No irq handler for vector # (IRQ -#, LAPIC)
(XEN) IRQ# a=#[#,#] v=#[#] t=PCI-MSI s=#

These are to be appearing in pairs.  Multiple values show for each field,
though each field appears to vary between 2-3 different values.  There
are thousands of these messages showing up.

I'm unsure whether these can be attributed to the flash devices I had
been trying to use in RAID1 though.  I've got another device being
problematic with interrupts which might instead be the cause of those
messages (this one is lower urgency than the flash devices).


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