From: Cédric Le Goater <c...@kaod.org> It is not yet supported.
Signed-off-by: Cédric Le Goater <c...@kaod.org> Message-Id: <20200804131639.407049-1-...@kaod.org> Signed-off-by: David Gibson <da...@gibson.dropbear.id.au> --- docs/specs/ppc-spapr-xive.rst | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/docs/specs/ppc-spapr-xive.rst b/docs/specs/ppc-spapr-xive.rst index 6159bc6eed..7199db730b 100644 --- a/docs/specs/ppc-spapr-xive.rst +++ b/docs/specs/ppc-spapr-xive.rst @@ -61,6 +61,11 @@ depend on the XIVE KVM capability of the host. On older kernels without XIVE KVM support, QEMU will use the emulated XIVE device as a fallback and on newer kernels (>=5.2), the KVM XIVE device. +XIVE native exploitation mode is not supported for KVM nested guests, +VMs running under a L1 hypervisor (KVM on pSeries). In that case, the +hypervisor will not advertise the KVM capability and QEMU will use the +emulated XIVE device, same as for older versions of KVM. + As a final refinement, the user can also switch the use of the KVM device with the machine option ``kernel_irqchip``. -- 2.26.2
