Hi Alexey, > > I can't get an Ubuntu Wily guest to boot on an Ubuntu Wily host in > > PR KVM mode. The kernel in both cases is 4.2. To reproduce: > > > > wget -N > > https://cloud-images.ubuntu.com/wily/current/wily-server-cloudimg-ppc64el-disk1.img > > > > qemu-system-ppc64 -cpu POWER8 -enable-kvm -machine pseries,kvm-type=PR -m > > 4G -nographic -vga none -drive > > file=wily-server-cloudimg-ppc64el-disk1.img,if=virtio > > > > Should TM work inside a PR KVM guest? > > If I read the kernel code correctly (kvmppc_set_one_reg_hv vs. > kvmppc_set_one_reg_pr), no, it should not be expected to work.
I see a couple of issues, patches to follow: 1. QEMU needs to clear the TM feature bit in the ibm,pa-features array when running in PR KVM mode. 2. Linux needs to clear the user TM feature bits if TM gets disabled at runtime via the ibm,pa-features bit. Anton _______________________________________________ Linuxppc-dev mailing list Linuxppc-dev@lists.ozlabs.org https://lists.ozlabs.org/listinfo/linuxppc-dev