On Thu, Nov 10, 2022 at 06:57:57AM +, Tian, Kevin wrote:
> > + /*
> > +* Emulation for NOIMMU is imperfect in that VFIO blocks almost all
> > +* other ioctls. We let them keep working but they mostly fail since no
> > +* IOAS should exist.
> > +*/
> > + if (IS_ENABLED(CONFI
On Thu, 10 Nov 2022 06:57:57 +
"Tian, Kevin" wrote:
> > From: Jason Gunthorpe
> > Sent: Thursday, November 10, 2022 3:53 AM
> >
> > On Wed, Nov 09, 2022 at 10:18:09AM -0700, Alex Williamson wrote:
> >
> > > DPDK supports no-iommu mode.
> >
> > Er? Huh? How? I thought no-iommu was for
> From: Jason Gunthorpe
> Sent: Thursday, November 10, 2022 3:53 AM
>
> On Wed, Nov 09, 2022 at 10:18:09AM -0700, Alex Williamson wrote:
>
> > DPDK supports no-iommu mode.
>
> Er? Huh? How? I thought no-iommu was for applications that didn't do
> DMA? How is DPDK getting packets in/out without
On Wed, Nov 09, 2022 at 10:18:09AM -0700, Alex Williamson wrote:
> DPDK supports no-iommu mode.
Er? Huh? How? I thought no-iommu was for applications that didn't do
DMA? How is DPDK getting packets in/out without DMA? I guess it snoops
in /proc/ or something to learn PFNs of mlock'd memory?
> I
On Tue, 8 Nov 2022 20:54:58 -0400
Jason Gunthorpe wrote:
> On Tue, Nov 08, 2022 at 03:28:31PM -0700, Alex Williamson wrote:
>
> > Perhaps this should have been obvious, but I'm realizing that
> > vfio-noiommu mode is completely missing without VFIO_CONTAINER, which
> > seems a barrier to depreca
On Tue, Nov 08, 2022 at 03:28:31PM -0700, Alex Williamson wrote:
> Perhaps this should have been obvious, but I'm realizing that
> vfio-noiommu mode is completely missing without VFIO_CONTAINER, which
> seems a barrier to deprecating VFIO_CONTAINER and perhaps makes it a
Yes, it is the same as th
On Mon, 7 Nov 2022 20:52:54 -0400
Jason Gunthorpe wrote:
> Add a kconfig CONFIG_VFIO_CONTAINER that controls compiling the container
> code. If 'n' then only iommufd will provide the container service. All the
> support for vfio iommu drivers, including type1, will not be built.
>
> This allows
