On 19/05/15 23:56, Julien Grall wrote: >> If you're wgetting from another host, I would suggest wgetting from Dom0 >> to limit the problem between Dom0 and DomU. > > Thanks to Wei, I was able to narrow the problem. It looks like the > problem is not coming from netback but somewhere else down in the > network stack: wget/ssh between Dom0 64KB and DomU is working fine. > > Although, wget/ssh between a guest and an external host doesn't work > when Dom0 is using 64KB page granularity unless if I start a tcpdump on > the vif in DOM0. Anyone an idea? > > I have no issue to wget/ssh in DOM0 to an external host and the same > kernel with 4KB page granularity (i.e same source code but rebuilt with > 4KB) doesn't show any issue with wget/ssh in the guest. > > This has been tested on AMD Seattle, the guest kernel is the same on > every test (4KB page granularity). > > I'm planning to give a try tomorrow on X-gene (ARM64 board and I think > 64KB page granularity is supported) to see if I can reproduce the bug.
It's working on X-gene with the same kernel and configuration. I guess we can deduce that it's a bug in the AMD network driver. Regards, -- Julien Grall -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
