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From: "Burakov, Anatoly" <anatoly.burakov@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Thread-Topic: [PATCH v2 10/16] Added support for selecting VFIO interrupt
 type from EAL command-line
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Date: Tue, 20 May 2014 11:26:34 +0000
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Cc: "dev@dpdk.org" <dev@dpdk.org>
Subject: Re: [dpdk-dev] [PATCH v2 10/16] Added support for selecting VFIO
 interrupt type from EAL command-line
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Hi Stephen,

> I am not sure that MSI-X has any advantage with only one IRQ, so MSI woul=
d
> do.

Igb_uio doesn't support MSI, so I never included MSI support. It can be add=
ed though, but I don't see much point.

> Then have the code look at the PCI capability of device and fallback to I=
NTX if
> needed. It should also check if INTX works, see kernel for details, since=
 some
> PCI emulation like VMware is broken.

I believe VFIO itself does that already when it sets up interrupts.

Best regards,
Anatoly Burakov
DPDK SW Engineer