152ef80 "pseries: Rewrite CAS PVR compatibility logic" incorrectly introduced a guest-visible behaviour change into existing versioned machine type. Patch 2/2 corrects this change, while 1/2 is a preliminary clean up to make that easier.
Unfortunately, this bug is already in the released qemu-2.9.0. Once this is ready to merge for master, I'll make a backport to apply for 2.9.1 as well. David Gibson (2): pseries: Split CAS PVR negotiation out into a separate function pseries: Restore PVR negotiation logic for pre-2.9 machine types hw/ppc/spapr.c | 3 ++ hw/ppc/spapr_hcall.c | 131 +++++++++++++++++++++++++++++++++++++++++++------ include/hw/ppc/spapr.h | 1 + 3 files changed, 119 insertions(+), 16 deletions(-) -- 2.9.4
