On Mon, Jun 04, 2018 at 02:05:17PM +0800, Yi Min Zhao wrote:
在 2018/6/2 下午10:18, Ján Tomko 写道:On Thu, May 24, 2018 at 02:24:30PM +0200, Xiao Feng Ren wrote:From: Yi Min Zhao <[email protected]> The pci-root depends on zpci capability. So autogenerate pci-root if zpci exists. Signed-off-by: Yi Min Zhao <[email protected]> Reviewed-by: Boris Fiuczynski <[email protected]> Reviewed-by: Stefan Zimmermann <[email protected]> Reviewed-by: Bjoern Walk <[email protected]> --- src/qemu/qemu_domain.c | 1 + 1 file changed, 1 insertion(+) diff --git a/src/qemu/qemu_domain.c b/src/qemu/qemu_domain.c index ee676a2789..05136540aa 100644 --- a/src/qemu/qemu_domain.c +++ b/src/qemu/qemu_domain.c @@ -3068,6 +3068,7 @@ qemuDomainDefAddDefaultDevices(virDomainDefPtr def, case VIR_ARCH_S390X: addDefaultUSB = false; addPanicDevice = true; + addPCIRoot = virQEMUCapsGet(qemuCaps, QEMU_CAPS_DEVICE_ZPCI);So from a certain QEMU version all the S390 machine types have an implicit PCI root?If zPCI exists, there must be pci root.Is migration a thing on S390?I'm not clear with your said. Could you please explain more?
Well from this code it seems from a certain version, QEMU added a new implicit device for all machine types, without letting libvirt have control over it, which is strange. So if we have a machine started by older libvirt on older QEMU, can we do a live migration to a newer libvirt+QEMU with the zPCI functionality? Or did live migration never work on S390? Jano
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