On 04/04/2016 09:09 PM, Michael Neuling wrote:
On Mon, 2016-04-04 at 17:00 +1000, Alexey Kardashevskiy wrote:
On 04/04/2016 04:44 PM, Anton Blanchard wrote:
Hi,
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.
What's missing?
I do not know much about TM... SET_ONE_REG interface does not support TM
registers for PR KVM and stuff which e4e38121507a2 "KVM: PPC: Book3S HV:
Add transactional memory support" adds (save/restore TM state on guest
entry/exit) is absent in PR KVM's book3s_rmhandlers.S.
--
Alexey
_______________________________________________
Linuxppc-dev mailing list
Linuxppc-dev@lists.ozlabs.org
https://lists.ozlabs.org/listinfo/linuxppc-dev
