From: "Xing, Beilei" <beilei.xing@intel.com>
To: Stephen Hemminger <stephen@networkplumber.org>
Cc: "Burakov, Anatoly" <anatoly.burakov@intel.com>,
"dev@dpdk.org" <dev@dpdk.org>,
"thomas@monjalon.net" <thomas@monjalon.net>,
"ferruh.yigit@amd.com" <ferruh.yigit@amd.com>,
"Richardson, Bruce" <bruce.richardson@intel.com>,
"chenbox@nvidia.com" <chenbox@nvidia.com>,
"Cao, Yahui" <yahui.cao@intel.com>
Subject: RE: [PATCH 4/4] eal: add new args to choose VFIO mode
Date: Mon, 25 Dec 2023 06:06:24 +0000 [thread overview]
Message-ID: <LV2PR11MB59974D46EFFD025C91EAE1DAF799A@LV2PR11MB5997.namprd11.prod.outlook.com> (raw)
In-Reply-To: <20231222091735.0abb5285@hermes.local>
> -----Original Message-----
> From: Stephen Hemminger <stephen@networkplumber.org>
> Sent: Saturday, December 23, 2023 1:18 AM
> To: Xing, Beilei <beilei.xing@intel.com>
> Cc: Burakov, Anatoly <anatoly.burakov@intel.com>; dev@dpdk.org;
> thomas@monjalon.net; ferruh.yigit@amd.com; Richardson, Bruce
> <bruce.richardson@intel.com>; chenbox@nvidia.com; Cao, Yahui
> <yahui.cao@intel.com>
> Subject: Re: [PATCH 4/4] eal: add new args to choose VFIO mode
>
> On Fri, 22 Dec 2023 19:44:53 +0000
> beilei.xing@intel.com wrote:
>
> > From: Beilei Xing <beilei.xing@intel.com>
> >
> > Since now Linux has both of VFIO Container/GROUP & VFIO IOMMUFD/CDEV
> > support, user can determine how to probe the PCI device by the new
> > args "--vfio-mode".
> >
> > Use "--vfio-mode=container" to choose VFIO Container/GROUP, and use
> > "--vfio-mode=iommufd" to choose VFIO IOMMUFD/CDEV.
> >
> > Signed-off-by: Beilei Xing <beilei.xing@intel.com>
> > Signed-off-by: Yahui Cao <yahui.cao@intel.com>
>
> Can't this be automatic, users don't need more EAL options.
Thanks for your review. Since Linux supports both VFIO Container/GROUP and VFIO
OMMUFD/CDEV currently, I think user can choose which mode they want. The new
IOMMU features (e.g. PASID/SSID) may be only available through VFIO IOMMUFD/CDEV
interface, VFIO Container/GROUP may be deprecated in future, and then DPDK will
use iommufd mode automatically.
.
prev parent reply other threads:[~2023-12-25 6:06 UTC|newest]
Thread overview: 9+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-12-22 19:44 [PATCH 0/4] add VFIO IOMMUFD/CDEV support beilei.xing
2023-12-22 19:44 ` [PATCH 1/4] iommufd: add IOMMUFD support beilei.xing
2023-12-22 19:44 ` [PATCH 2/4] vfio: add VFIO " beilei.xing
2023-12-22 17:17 ` Stephen Hemminger
2023-12-25 6:30 ` Xing, Beilei
2023-12-22 19:44 ` [PATCH 3/4] bus/pci: add VFIO CDEV support beilei.xing
2023-12-22 19:44 ` [PATCH 4/4] eal: add new args to choose VFIO mode beilei.xing
2023-12-22 17:17 ` Stephen Hemminger
2023-12-25 6:06 ` Xing, Beilei [this message]
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