Messages in this thread | | | From | Thomas Gleixner <> | Subject | RE: [5.14-rc1] mlx5_core receives no interrupts with maxcpus=8 | Date | Wed, 21 Jul 2021 23:16:41 +0200 |
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Dexuan,
On Mon, Jul 19 2021 at 20:33, Dexuan Cui wrote: > This is a bare metal x86-64 host with Intel CPUs. Yes, I believe the > issue is in the IOMMU Interrupt Remapping mechanism rather in the > NIC driver. I just don't understand why bringing the CPUs online and > offline can work around the issue. I'm trying to dump the IOMMU IR > table entries to look for any error.
can you please enable GENERIC_IRQ_DEBUGFS and provide the output of
cat /sys/kernel/debug/irq/irqs/$THENICIRQS
Thanks,
tglx
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