[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]

Re: [Xen-devel] [early RFC] ARM PCI Passthrough design document

On Wed, Feb 01, 2017 at 07:04:43PM +0000, Julien Grall wrote:
> Or maybe we could avoid mapping the doorbell in the guest and let Xen
> receive an SMMU abort. When receiving the SMMU abort, Xen could sanitize the
> value and write into the real MSI doorbell. Not sure if it would works
> thought.

AFAIK (and I might be wrong) you can only know the address that caused the
fault, but not the data that was attempted to be written there. TBH, I wouldn't
expect this approach to work.


Xen-devel mailing list



Lists.xenproject.org is hosted with RackSpace, monitoring our
servers 24x7x365 and backed by RackSpace's Fanatical Support®.