Re: [PATCH 01/12] Security: Add CAP_COMPROMISE_KERNEL

[Alex Williamson]

On Tue, 2013-03-19 at 20:22 -0700, H. Peter Anvin wrote:
> On 03/19/2013 08:18 PM, Alex Williamson wrote:
> >>
> >> The "pinning" process needs to involve a call to the kernel to process
> >> the page for DMA (pinning the page and opening it in the iommu) and
> >> return a transaction address, of course.
> >>
> >> I think we have the interface for that in vfio, but I haven't followed
> >> that work.
> > 
> > Yes, vfio does this and is meant to provide a secure-boot-friendly PCI
> > passthrough interface.  Thanks,
> > 
> 
> Right, and presumably vfio does *not* require CAP_SYS_RAWIO, right?

Correct

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