Re: [Xen-devel] [PATCH v2 0/2] Support of RO MMCFG access for PVH/HVMlite dom0s

2015-12-18 Thread Jan Beulich
>>> On 18.12.15 at 15:30, wrote: > On 12/18/2015 09:16 AM, Jan Beulich wrote: > On 18.12.15 at 14:53, wrote: >>> On 12/18/2015 08:02 AM, Andrew Cooper wrote: On 18/12/15 10:11, Jan Beulich wrote: On 17.12.15 at 21:22, wrote: >> * Left non-MMCFG RO accesses unhandled (we hav

Re: [Xen-devel] [PATCH v2 0/2] Support of RO MMCFG access for PVH/HVMlite dom0s

2015-12-18 Thread Boris Ostrovsky
On 12/18/2015 09:16 AM, Jan Beulich wrote: On 18.12.15 at 14:53, wrote: On 12/18/2015 08:02 AM, Andrew Cooper wrote: On 18/12/15 10:11, Jan Beulich wrote: On 17.12.15 at 21:22, wrote: * Left non-MMCFG RO accesses unhandled (we havent't encountered those accesses yet with PVH dom0 and

Re: [Xen-devel] [PATCH v2 0/2] Support of RO MMCFG access for PVH/HVMlite dom0s

2015-12-18 Thread Jan Beulich
>>> On 18.12.15 at 14:53, wrote: > On 12/18/2015 08:02 AM, Andrew Cooper wrote: >> On 18/12/15 10:11, Jan Beulich wrote: >> On 17.12.15 at 21:22, wrote: * Left non-MMCFG RO accesses unhandled (we havent't encountered those > accesses yet with PVH dom0 and it's probably better to

Re: [Xen-devel] [PATCH v2 0/2] Support of RO MMCFG access for PVH/HVMlite dom0s

2015-12-18 Thread Boris Ostrovsky
On 12/18/2015 08:02 AM, Andrew Cooper wrote: On 18/12/15 10:11, Jan Beulich wrote: On 17.12.15 at 21:22, wrote: * Left non-MMCFG RO accesses unhandled (we havent't encountered those accesses yet with PVH dom0 and it's probably better to fault on them and investigate whether they are gues

Re: [Xen-devel] [PATCH v2 0/2] Support of RO MMCFG access for PVH/HVMlite dom0s

2015-12-18 Thread Andrew Cooper
On 18/12/15 10:11, Jan Beulich wrote: On 17.12.15 at 21:22, wrote: >> * Left non-MMCFG RO accesses unhandled (we havent't encountered those >> accesses >> yet with PVH dom0 and it's probably better to fault on them and investigate >> whether they are guest's issues). > I seriously questi

Re: [Xen-devel] [PATCH v2 0/2] Support of RO MMCFG access for PVH/HVMlite dom0s

2015-12-18 Thread Jan Beulich
>>> On 17.12.15 at 21:22, wrote: > * Left non-MMCFG RO accesses unhandled (we havent't encountered those accesses > yet with PVH dom0 and it's probably better to fault on them and investigate > whether they are guest's issues). I seriously question this being a good approach, since I can't se

[Xen-devel] [PATCH v2 0/2] Support of RO MMCFG access for PVH/HVMlite dom0s

2015-12-17 Thread Boris Ostrovsky
v2: * Expanded npfec structure to include page's precense indicator (I took the easy way out and didn't implement VMX's fine-grained status since I couldn't figure out how to properly do it in SVM) * s/mmio/mmcfg for some operations. I left mmio_ro_emulate_ctxt as is because it is used for no