openlui wrote on 2015-03-28: > Hi, all: > I have done the same testing on hosts which support "Intel VT-d > Shared EPT tables" today, the results show that similar problem still > exists under xen > 4.5 release: > 1. When we boot xen with "iommu=1, no-sharept" argument which will > disable "Intel VT-d Shared EPT tables", the problem doesn't exist any > more. As shown in my last mail, I have found it is the commit > 203746bc36b41443d0eec78819f153fb59bc68d1 fix it. > 2. Without above boot arguments, "Intel VT-d Shared EPT tables" > will be enabled. And the network between driver domains will be > blocked after sending several packets from domu. However, which is > different from the last mail is that there are not any exception logs in > driver domain. > I think maybe it is a bug for xen 4.5 + pci passthrough, could > anybody give me some advice about how to debug and solve it? Thanks.
It seems something wrong with VT-d page table to map grant page. Please try to add iommu=debug to get more information. > > > > Best regards, Yang _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
