On Monday 10 December 2007 00:22, Roland Dreier wrote: > Fair enough... according to Documentation/infiniband/core_locking.txt, > the only driver methods that cannot sleep are: > > [...] > map_phys_fmr
In fact, we do use hCalls there. Our hardware doesn't actually support FMRs, so we translate a "map FMR" into a "reallocate PMR", which doesn't work without hCalls. What's more, the hCalls involved (e.g. H_FREE_RESOURCE) might well return H_LONG_BUSY, so the whole operation might sleep; no way around it. How should we deal with this? Thanks, Joachim -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to [EMAIL PROTECTED] More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
