> > The current implementation of VFIO will not with the new no-IOMMU mode
> > in 4.4 kernel. The original code assumed that IOMMU group zero would
> > never be used. Group numbers are assigned starting at zero, and up until
> > now the group numbers came from the hardware which is likely to use gr
> -Original Message-
> From: dev [mailto:dev-bounces at dpdk.org] On Behalf Of Stephen
> Hemminger
> Sent: Wednesday, December 9, 2015 5:56 PM
> To: dev at dpdk.org
> Subject: [dpdk-dev] [PATCH] vfio: support iommu group zero
>
> The current implementation of VFIO
2015-12-09 13:58, Stephen Hemminger:
> On Wed, 09 Dec 2015 22:12:33 +0100
> Thomas Monjalon wrote:
>
> > 2015-12-09 09:55, Stephen Hemminger:
> > > The current implementation of VFIO will not with the new no-IOMMU mode
> > > in 4.4 kernel. The original code assumed that IOMMU group zero would
> >
2015-12-09 09:55, Stephen Hemminger:
> The current implementation of VFIO will not with the new no-IOMMU mode
> in 4.4 kernel. The original code assumed that IOMMU group zero would
> never be used. Group numbers are assigned starting at zero, and up
> until now the group numbers came from the hardw
On Wed, 2015-12-09 at 16:52 -0800, Stephen Hemminger wrote:
> On Wed, 09 Dec 2015 16:22:14 -0700
> Alex Williamson wrote:
>
> > On Wed, 2015-12-09 at 15:12 -0800, Stephen Hemminger wrote:
> > > On Wed, 09 Dec 2015 23:49:59 +0100
> > > Thomas Monjalon wrote:
> > >
> > > > 2015-12-09 13:58, Steph
On Wed, 09 Dec 2015 16:22:14 -0700
Alex Williamson wrote:
> On Wed, 2015-12-09 at 15:12 -0800, Stephen Hemminger wrote:
> > On Wed, 09 Dec 2015 23:49:59 +0100
> > Thomas Monjalon wrote:
> >
> > > 2015-12-09 13:58, Stephen Hemminger:
> > > > On Wed, 09 Dec 2015 22:12:33 +0100
> > > > Thomas Monj
On Wed, 2015-12-09 at 15:12 -0800, Stephen Hemminger wrote:
> On Wed, 09 Dec 2015 23:49:59 +0100
> Thomas Monjalon wrote:
>
> > 2015-12-09 13:58, Stephen Hemminger:
> > > On Wed, 09 Dec 2015 22:12:33 +0100
> > > Thomas Monjalon wrote:
> > >
> > > > 2015-12-09 09:55, Stephen Hemminger:
> > > > >
On Wed, 09 Dec 2015 23:49:59 +0100
Thomas Monjalon wrote:
> 2015-12-09 13:58, Stephen Hemminger:
> > On Wed, 09 Dec 2015 22:12:33 +0100
> > Thomas Monjalon wrote:
> >
> > > 2015-12-09 09:55, Stephen Hemminger:
> > > > The current implementation of VFIO will not with the new no-IOMMU mode
> > >
On Wed, 09 Dec 2015 22:12:33 +0100
Thomas Monjalon wrote:
> 2015-12-09 09:55, Stephen Hemminger:
> > The current implementation of VFIO will not with the new no-IOMMU mode
> > in 4.4 kernel. The original code assumed that IOMMU group zero would
> > never be used. Group numbers are assigned starti
On Wed, 09 Dec 2015 22:12:33 +0100
Thomas Monjalon wrote:
> So I guess you have tested the VFIO no-iommu patch.
> Is it working well with DPDK with only this patch for group zero?
> Have you talked to Alex Williamson?
I did test it enough to bring up a link but I needed this patch.
The patch fix
The current implementation of VFIO will not with the new no-IOMMU mode
in 4.4 kernel. The original code assumed that IOMMU group zero would
never be used. Group numbers are assigned starting at zero, and up
until now the group numbers came from the hardware which is likely
to use group 0 for system
From: Stephen Hemminger
The implementation of VFIO is broken on some platforms and if using
the proposed VFIO without IOMMU patch. IOMMU group zero is a valid value.
Change code to split the return value from the group value.
Signed-off-by: Stephen Hemminger
---
lib/librte_eal/linuxapp/eal/e
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