> > > Let us say we register a MR that has a backing memory scattergather list > of > > > 10 64KB entries, each 64KB entry, though, is physically contiguous. The > > > page-size for that registration, then can be 64KB even though the host > page > > > size is 4KB. So the page list for the registration with the rdma device can > > > be 10 64K entries, each of size 64KB... > > > > So what is the value? > > > > 'max contiguous page size' of any page in the registration or 'min > > contiguous page size' of any page in the registration? > > > > Seems like it needs a better name at least.. > > > > Jason > > All "pages" in the REG_MR page list are of the same size. So pgsize is the size > of each entry... > Looking at all the users that register memory, it appears they always use PAGE_SIZE or 4K. So perhaps passing this up is useless... But the rdma devices do support a range of page sizes, and the intent of ib_mr.page_size was to express what page_size is being used for that MR. I'm removing it... -- To unsubscribe from this list: send the line "unsubscribe linux-rdma" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
