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Subject: Re: bhyve pci passthrough usb controller
To: Peter Grehan <grehan@freebsd.org>
Cc: "Rodney W. Grimes" <freebsd-rwg@pdx.rh.CN85.dnsmgr.net>,
 freebsd-virtualization@freebsd.org
References: <201803240230.w2O2U21F033917@pdx.rh.CN85.dnsmgr.net>
 <bfda0fa1-48be-4bc5-9172-8de89e4196fc@ofloo.net>
 <48cef2a2-f8de-1784-9094-daeb2dd7d55a@freebsd.org>
From: Wouter Snels <nospam@ofloo.net>
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Date: Tue, 27 Mar 2018 15:55:32 +0200
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It seems that this is not limited to only windows7. I tried passing
through to a generic test install of freebsd 11. And this crashes as well.

Regards, ..


Op 25-03-18 om 03:01 schreef Peter Grehan:
>
>> I surely will try this out, but what about device 4/0/0 showing the
>> same issue. Both tests where performed separately showing the exact
>> same result, of course I'd be happy if either one of them worked.
>
>  I think what is happening here is that Windows is enabling legacy
> interrupts on the device, and that happens to be on the same shared
> IRQ line that the ATA controller is on, resulting in spurious interrupts.
>
>  The dmesg for the system may be able to confirm this, since it should
> list the legacy IRQs that have been assigned.
>
>  bhyve PCI passthru relies not only on the device supporting MSI/MSI-x
> interrupts, but the guest using those.
>
> later,
>
> Peter.