[libvirt] [PATCH 0/4] libxl: implement some chuncks of the NUMA interface

Hi Jim, Everyone, First patch series, so maybe a small introduction is required: I'm Dario and I work for Citrix on improving the NUMA support of Xen. This patch series implements some of the missing bits and pieces, in the libxl driver, regarding obtaining per-host and per-domain NUMA related information. It's not the full libvirt NUMA interface, since we don't have all we would need for that in Xen yet (we will in the next version, 4.4), but it's certainly better than having nothing! :-) Basically, I'm enhancing capability reporting, to cover NUMA topology (patch 01), and I'm implementing nodeGetCellsFreeMemory (patch 02) and virDomainGetNumaParameters (patch 04) for the libxl driver. This last one requires at least Xen 4.3, so I put the implementation within the proper #ifdef-ery. What I'm really not sure about is patch 03, which is something I need if I want patch 04 to function properly. Basically it is about advertising that the libxl driver supports VIR_TYPED_PARAM_STRING. I looked at how that is done in the qemu driver, but I'm not entirely sure I completely understood the logic behind it, so, please, tell me if I missed or misinterpreted anything! In particular, should I have added more of those "flags &= ~VIR_TYPED_PARAM_STRING_OKAY;" statements, as it happens in the qemu driver? If yes, in which functions? Finally, allow me to say that it was a while that I wanted start hacking a bit on libvirt. I'm really glad I've eventually been able to do so, and I definitely plan to continue (with particular focus on NUMA related stuff). Comments are of course more than welcome. :-) Thanks and Regards, Dario --- Dario Faggioli (4): libxl: implement NUMA capabilities reporting libxl: implement per NUMA node free memory reporting libxl: advertise the support for VIR_TYPED_PARAM_STRING libxl: implement virDomainGetNumaParameters src/libxl/libxl_conf.c | 128 +++++++++++++++++++++++++++++- src/libxl/libxl_driver.c | 199 ++++++++++++++++++++++++++++++++++++++++++++++ 2 files changed, 326 insertions(+), 1 deletion(-) -- <<This happens because I choose it to happen!>> (Raistlin Majere) ----------------------------------------------------------------- Dario Faggioli, Ph.D, http://about.me/dario.faggioli Senior Software Engineer, Citrix Systems R&D Ltd., Cambridge (UK)