>>> On 21.06.16 at 20:26, <andrey2...@gmail.com> wrote: > Current overlap check is evaluating to false a case where a filter field > is fully contained (proper subset) of a r/w request. > This change applies classical overlap check instead to include > all the scenarios. > > More specifically, for (Hilscher GmbH CIFX 50E-DP(M/S)) device > driver the logic is such that the entire confspace is read and > written in 4 byte chunks.In this case as an example, CACHE_LINE_SIZE, > LATENCY_TIMER and PCI_BIST are arriving together in one call to > xen_pcibk_config_write with offset == 0xc and size == 4. > With the exsisting overlap check LATENCY_TIMER field > (offset == 0xd, length == 1) is fully contained in the write request > and hence is excluded from write, which is incorrect. > > Related to https://www.mail-archive.com/xen-devel@lists.xen.org/msg72174.html > > Reviewed-by: Boris Ostrovsky <boris.ostrov...@oracle.com> > Reviewed-by: David Vrabel <david.vra...@citrix.com>
Reviewed-by: Jan Beulich <jbeul...@suse.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
