Creation of guests (both PV and FV) fails with all 2.6.18-rcX based Xen kernels (2.6.17-1.2439.fc6xen is the one currently on my test box) The guest creation gives an "Error creating guest OS". Looking in xm dmesg, the reason is related to (XEN) DOM0: (file=mm.c, line=822) PAE L3 3rd slot is empty (XEN) DOM0: (file=mm.c, line=1053) Failure in alloc_l3_table: entry 4 (XEN) DOM0: (file=mm.c, line=1732) Error while validating mfn e1d4 (pfn 2b5bf) for type 60000000: caf=80000002 taf=60000001 (XEN) DOM0: (file=mm.c, line=2004) Error while pinning mfn e1d4
Building a HV from unstable with pae=y debug=n verbose=n doesn't help this (although there isn't helpful spew about the problem anymore and I had to hack up libxenguest to figure out why the guest creation was failing)
See #200004 - the patch there could well fix this too, there's nothing arch specific about the problem causing #200004
This is better with 2462