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Re: [Qemu-devel] e1000e: MSI-X problem with recent Linux drivers
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From: |
Jan Kiszka |
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Subject: |
Re: [Qemu-devel] e1000e: MSI-X problem with recent Linux drivers |
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Date: |
Mon, 19 Feb 2018 08:46:09 +0100 |
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User-agent: |
Mozilla/5.0 (X11; U; Linux i686 (x86_64); de; rv:1.8.1.12) Gecko/20080226 SUSE/2.0.0.12-1.1 Thunderbird/2.0.0.12 Mnenhy/0.7.5.666 |
On 2018-02-18 21:54, Jan Kiszka wrote:
> Hi,
>
> I've just noticed that the e1000e model does not work with its recent
> Linux kernel driver. This is my test matrix:
>
> Kernel INTx (IntMode=0) MSI-X
> 4.4 OK OK
> 4.14 OK no link
> master OK no link
FWIW: 4.9 (Debian kernel) is fine as well.
>
> In MSI-X mode, there are few interrupts arriving:
> [...]
> 25: 0 0 0 0 IR-PCI-MSI 32768-edge
> enp0s2-rx-0
> 26: 0 0 0 0 IR-PCI-MSI 32769-edge
> enp0s2-tx-0
> 27: 0 2 0 0 IR-PCI-MSI 32770-edge
> enp0s2
>
> QEMU versions tested without differences: v2.8, v2.9, master.
>
> Any ideas what could go wrong, and where?
>
> Jan
>
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