From: Timothy Pearson <tpearson@raptorengineering.com>
To: linuxppc-dev <linuxppc-dev@lists.ozlabs.org>
Cc: Ritesh Harjani <ritesh.list@gmail.com>
Subject: [BUG] Continuously increasing spurious interrupts inside pSeries guest on PowerNV host
Date: Fri, 14 Aug 2026 09:56:30 -0500 (CDT) [thread overview]
Message-ID: <582904882.11159.1786719390349.JavaMail.zimbra@raptorengineeringinc.com> (raw)
With kernel 6.12 (Debian stable) we see a continuously increasing spurious interrupt count inside a pSeries guest running on a PowerNV host:
cat /proc/interrupts
CPU0
16: 0 XIVE-IPI 0 Edge IPI-0
17: 0 XIVE-IRQ 4096 Edge RAS_EPOW
21: 2 XIVE-IRQ 4353 Edge hvc_console
23: 0 XIVE-IRQ 4097 Edge RAS_HOTPLUG
24: 0 pSeries-PCI-MSI 0 Edge virtio0-config
25: 50995 pSeries-PCI-MSI 1 Edge virtio0-input.0
26: 45569 pSeries-PCI-MSI 2 Edge virtio0-output.0
27: 0 pSeries-PCI-MSI 16384 Edge virtio1-config
28: 6 pSeries-PCI-MSI 16385 Edge virtio1-input
LOC: 5781 Local timer interrupts for timer event device
BCT: 0 Broadcast timer interrupts for timer event device
LOC: 2 Local timer interrupts for others
SPU: 449927 Spurious interrupts
PMI: 0 Performance monitoring interrupts
MCE: 0 Machine check exceptions
NMI: 0 System Reset interrupts
WDG: 0 Watchdog soft-NMI interrupts
DBL: 0 Doorbell interrupts
The spurious interrupts are apparently from the virtio0-[input|output] devices.
next reply other threads:[~2026-08-14 14:56 UTC|newest]
Thread overview: 5+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-08-14 14:56 Timothy Pearson [this message]
2026-08-14 15:14 ` [BUG] Continuously increasing spurious interrupts inside pSeries guest on PowerNV host Timothy Pearson
2026-08-17 4:02 ` Madhavan Srinivasan
2026-08-19 7:54 ` Gautam Menghani
2026-09-01 6:15 ` Gautam Menghani
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