Roland Dreier wrote: > Also handling highmem is a problem. ipath just depends on 64BIT so it > avoids the problem. I guess mthca could only return a kernel virtual > address if one exists, and always use DMA for highmem pages. So that > isn't really a serious objection.
Roland, I have mentioned this to Ralph in the past, just want to get ack/nak on that from you: also on 64bit arch a block driver (eg SCSI LLD eg SRP/iSER/etc) might get from higher level an SG whose pages are **not** mapped into the kernel virtual address space. For example this can happen with Direct I/O. Or. _______________________________________________ openib-general mailing list [email protected] http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
