Re: [Xen-devel] [PATCH 5/6] xen-pt: Hide MSI-X from xen stubdoms

[Marek Marczykowski-Górecki <marmarek@xxxxxxxxxxxxxxxxxxxxxx>]

On Tue, Mar 12, 2019 at 01:04:19PM +0100, Roger Pau Monné wrote:
> On Mon, Mar 11, 2019 at 02:02:15PM -0400, Jason Andryuk wrote:
> > MSI-X is not supported in Xen stubdoms, so it must be disabled.  Use the
> > existing xen_pt_hide_dev_cap to hide when running under -xen-stubdom.
> 
> I'm afraid this requires some more context. What's the actual issue
> that prevents MSI-X from working?

At least missing "Fix PCI passthrough for HVM with stubdomain" series,
but that's mostly on Xen side (+ one change how QEMU enable MSI-X in
config space).
Some of it can be worked around by enabling permissive mode. Jason, did
you had a chance to test it with any MSI-X device?
I'm not aware of anything thing particular that breaks MSI-X but not
MSI. Besides much less devices lying around to test MSI-X...

-- 
Best Regards,
Marek Marczykowski-Górecki
Invisible Things Lab
A: Because it messes up the order in which people normally read text.
Q: Why is top-posting such a bad thing?

Attachment: signature.asc
Description: PGP signature

_______________________________________________
Xen-devel mailing list
Xen-devel@xxxxxxxxxxxxxxxxxxxx
https://lists.xenproject.org/mailman/listinfo/xen-devel