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. Roger. _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org https://lists.xen.org/xen-devel
