Or Gerlitz wrote: > On 11/5/06, Roland Dreier <[EMAIL PROTECTED]> wrote: >> > 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. >> >> No, I don't see how that could happen. Aren't all pages always mapped >> by the the kernel direct mapping on 64-bit architectures? > > I don't know exactly how this happens, but one of the comments i've > got from Christoph > on the iser code, is that one can't assume page_address(sg[i].page) > will not be NULL for SG passed to a SCSI LLD, i think Direct I/O is > one flow where this might happen.
Christoph, can you clarify this point? Or. _______________________________________________ openib-general mailing list openib-general@openib.org http://openib.org/mailman/listinfo/openib-general To unsubscribe, please visit http://openib.org/mailman/listinfo/openib-general
