Re: bypass support for iommu on sparc64

[Bryan Steele]

This is OpenBSD tech@

On Sat, Oct 20, 2018 at 08:36:33PM +0100, Andrew Grillet wrote:
> So, substitute opening and closing the connection to the network?
> 
> Is the IOMMU not used for disk (and all SCSI) access also?
> 
> 
> 
> On Sat, 20 Oct 2018 at 20:32, Theo de Raadt <dera...@openbsd.org> wrote:
> 
> > Andrew Grillet <and...@grillet.co.uk> wrote:
> >
> > > Ok, what I am proposing is that the IOMMU is set up when a file is opened
> > > to provide the address space required for that file's IO.
> >
> > Wow, you keep saying file as if it means something.
> >
> > packets off the network are not associated with any specific "file"
> > activity
> >
> > it isn't how the kernel works.
> >
> > You are ... way off target.
> >
>