On 16/11/2016 15:17, Greg Kurz wrote: > On Wed, 16 Nov 2016 14:17:47 +0100 > Thomas Huth <th...@redhat.com> wrote: > >> On 16.11.2016 13:37, Greg Kurz wrote: >>> On Wed, 16 Nov 2016 12:24:50 +0000 >>> "Dr. David Alan Gilbert" <dgilb...@redhat.com> wrote: >>> >>>> * Greg Kurz (gr...@kaod.org) wrote: >>>>> On Wed, 16 Nov 2016 09:39:31 +0100 >>>>> Thomas Huth <th...@redhat.com> wrote: >>>>> >>>>>> The ppc64 postcopy test does not work with KVM-PR, and it is also >>>>>> causing annoying warning messages when run on a x86 host. So let's >>>>>> use KVM here only if we know that we're running with KVM-HV (which >>>>>> automatically also means that we're running on a ppc64 host), and >>>>>> fall back to TCG otherwise. >>>>>> [..] > The changes to the code look ok and I prefer to spend time chasing the > KVM PR issue rather than arguing on a comment...
For the problem itself, it seems to appear only after a BOOK3S_INTERRUPT_SYSCALL interrupt for an KVM_EXIT_PAPR_HCALL (H_PUT_TERM_CHAR). In this case, KVM has to exit to QEMU to manage the output. The following interrupt is always an BOOK3S_INTERRUPT_PROGRAM with an emulation failure. Laurent
