From mboxrd@z Thu Jan 1 00:00:00 1970 From: "Burakov, Anatoly" Subject: Re: [PATCH v2 10/16] Added support for selecting VFIO interrupt type from EAL command-line Date: Tue, 20 May 2014 11:26:34 +0000 Message-ID: References: <1400514709-24087-11-git-send-email-anatoly.burakov@intel.com> <20140520042323.4dbea108@samsung-9> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable Cc: "dev-VfR2kkLFssw@public.gmane.org" To: Stephen Hemminger Return-path: In-Reply-To: <20140520042323.4dbea108@samsung-9> Content-Language: en-US List-Id: patches and discussions about DPDK List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: dev-bounces-VfR2kkLFssw@public.gmane.org Sender: "dev" 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