[Qemu-ppc] [PATCH 0/5] spapr_pci: various cleanups and improvements

[Greg Kurz]

Before resuming the huge work on PHB hotplug, here are some patches
that maybe worth to apply.

Patches 1 to 3 are basic improvements.

Patch 4 and 5 may be a bit controversial. Everywhere in the spapr
code where we build an FDT portion, libfdt failures cause QEMU to
exit, even on hotplug paths. Only spapr_pci doesn't do that and
propagates the error instead. My understanding is that a failure
when building the FDT is likely to happen because of a bug in QEMU.

Hence the choice to convert spapr_pci to do like the others. We may
even consider changing _FDT() to abort() instead of exit().

Alternatively, if libfdt failures shouldn't be necessarily fatal,
especially on post-realize paths, then we should probably introduce
an _FDT_ERR() helper to propagate errors. And use it in may places
where we currently terminate QEMU: memory hotplug, CPU hotplug, CAS,
machine reset...

--
Greg

---

Greg Kurz (5):
      spapr_pci: drop useless check in spapr_phb_vfio_get_loc_code()
      spapr_pci: drop useless check in spapr_populate_pci_child_dt()
      spapr_pci: use g_strdup_printf()
      spapr_pci: use the common _FDT() helper
      spapr_pci: handle FDT creation errors with _FDT()


 hw/ppc/spapr_pci.c |   69 ++++++++++++++++------------------------------------
 1 file changed, 21 insertions(+), 48 deletions(-)