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| author | Cédric Le Goater <clg@kaod.org> | 2020-08-04 15:16:39 +0200 |
|---|---|---|
| committer | David Gibson <david@gibson.dropbear.id.au> | 2020-08-12 13:16:27 +1000 |
| commit | 8d14523b1c98e7e64844a997d07dffcc32c83bef (patch) | |
| tree | 81d92bb2825d2cdb0f693f7022a7e9523d645713 /docs/specs | |
| parent | 61f5e1a34daebc0d92073bfc8159bee4855a1397 (diff) | |
| download | qemu-8d14523b1c98e7e64844a997d07dffcc32c83bef.zip qemu-8d14523b1c98e7e64844a997d07dffcc32c83bef.tar.gz qemu-8d14523b1c98e7e64844a997d07dffcc32c83bef.tar.bz2 | |
docs: Update POWER9 XIVE support for nested guests
It is not yet supported.
Signed-off-by: Cédric Le Goater <clg@kaod.org>
Message-Id: <20200804131639.407049-1-clg@kaod.org>
Signed-off-by: David Gibson <david@gibson.dropbear.id.au>
Diffstat (limited to 'docs/specs')
| -rw-r--r-- | docs/specs/ppc-spapr-xive.rst | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/docs/specs/ppc-spapr-xive.rst b/docs/specs/ppc-spapr-xive.rst index 6159bc6..7199db7 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``. |