On 4/23/19 6:54 AM, Juergen Gross wrote: > The condition in xen_swiotlb_free_coherent() for deciding whether to > call xen_destroy_contiguous_region() is wrong: in case the region to > be freed is not contiguous calling xen_destroy_contiguous_region() is > the wrong thing to do: it would result in inconsistent mappings of > multiple PFNs to the same MFN. This will lead to various strange > crashes or data corruption. > > Instead of calling xen_destroy_contiguous_region() in that case a > warning should be issued as that situation should never occur. > > Cc: [email protected] > Signed-off-by: Juergen Gross <[email protected]>
Reviewed-by: Boris Ostrovsky <[email protected]> _______________________________________________ iommu mailing list [email protected] https://lists.linuxfoundation.org/mailman/listinfo/iommu
