Hello! > But in this case host gets this page size for total region size, therefore > qva_to_vva() fails. > I haven't worked with hugepages, but i guess that with real hugepages we > get one file per page, therefore page size == mapping size. With newly > introduced --single-file we now have something that pretends to be a single > "uber-huge-page", so we need to specify total size of the mapping here.
Oh I get it and recognize the problem here. The actual problem lies in the API rte_eal_get_backfile_info(). backfiles[i].size = hugepage_files[i].size; Should use statfs or hugepage_files[i].size * hugepage_files[i].repeated to calculate the total size. > > BTW, i'm still unhappy about ABI breakage here. I think we could easily add > --shared-mem option, which would simply change mapping mode to SHARED. So, we > could use it with both hugepages (default) and plain mmap (with > --no-hugepages). You mean, use "--no-hugepages --shared-mem" together, right? That makes sense to me. Thanks, Jianfeng > > Kind regards, > Pavel Fedin > Expert Engineer > Samsung Electronics Research center Russia > >
