Re: pci passthrough and msi-x

[Henrik Riomar <rio@xxxxxxxxx>]

On Mon, 1 Mar 2021 09:06:24 +0100
Henrik Riomar <rio@xxxxxxxxx> wrote:

> Hi,
> 
> What options are needed to get MSI-X interrupts working with pci passthrough?
> 
> Running Linux 5.10 in dom0 and in the guest with XEN 4.14.1.
> 

Upgrade from Linux 5.10.16 to 5.10.19 seems to solve the issue.

/ Henrik

5.10.19:

[    2.922007] ixgbe: Intel(R) 10 Gigabit PCI Express Network Driver
[    2.922010] ixgbe: Copyright (c) 1999-2016 Intel Corporation.
[    2.934638] ixgbe 0000:00:00.0: Xen PCI mapped GSI17 to IRQ19
[    3.188537] EDAC pnd2: Failed to register device with error -19.
[    3.282965] ixgbe 0000:00:00.0: Multiqueue Enabled: Rx Queue count = 2, Tx 
Queue count = 2 XDP Queue count = 0
[    3.411026] ixgbe 0000:00:00.0: MAC: 6, PHY: 27, PBA No: 030000-000
[    3.411029] ixgbe 0000:00:00.0: 3c:ec:ef:03:0b:d6
[    3.457704] ixgbe 0000:00:00.0: Intel(R) 10 Gigabit Network Connection
[    3.461237] ixgbe 0000:00:00.1: Xen PCI mapped GSI18 to IRQ23
[    3.943626] ixgbe 0000:00:00.1: Multiqueue Enabled: Rx Queue count = 2, Tx 
Queue count = 2 XDP Queue count = 0
[    4.081342] ixgbe 0000:00:00.1: MAC: 6, PHY: 27, PBA No: 030000-000
[    4.081347] ixgbe 0000:00:00.1: 3c:ec:ef:03:0b:d7
[    4.125774] ixgbe 0000:00:00.1: Intel(R) 10 Gigabit Network Connection