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
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 a compilation check that no inappropriate dependencies between
the de
