On Fri, 2017-06-02 at 13:15 +1000, David Gibson wrote: > This is a rebased and revised version of my patches revising CPU > compatiblity mode handling on ppc, last posted in November. Since > then, many of the patches have already been merged (some for 2.9, some > since). This is what's left.
As discussed yesterday on libvir-list, the current implementation will abort() when the user attempts to use a compat mode that's not valid for the host CPU, eg. on a POWER8 host: $ qemu-system-ppc64 \ -nodefaults \ -M pseries,accel=kvm \ -cpu host,compat=power9 Unexpected error in ppc_set_compat() at target/ppc/compat.c:135: qemu-system-ppc64: Compatibility PVR 0x0f000005 not valid for CPU Aborted We should probably report the error to the user in a slightly less destructive fashion :) [1] https://www.redhat.com/archives/libvir-list/2017-June/msg00476.html -- Andrea Bolognani / Red Hat / Virtualization
