On 06.02.2025 16:06, Roger Pau Monne wrote:
> The following series aims to prevent local APIC errors from stalling the
> shtudown process. On XenServer testing we have seen reports of AMD
> boxes sporadically getting stuck in a spam of:
>
> APIC error on CPU0: 00(08), Receive accept error
>
> Messages during shutdown, as a result of device interrupts targeting
> CPUs that are offline (and have the local APIC disabled).
One more thought here: Have you/we perhaps discovered the reason why there
was that 1ms delay at the end of fixup_irqs() that was badly commented,
and that you removed in e2bb28d62158 ("x86/irq: forward pending interrupts
to new destination in fixup_irqs()")? May be worth mentioning that by way
of a Fixes: tag.
Jan
