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authorDaniel Henrique Barboza <danielhb413@gmail.com>2021-12-17 17:57:13 +0100
committerCédric Le Goater <clg@kaod.org>2021-12-17 17:57:13 +0100
commit3e8f7158153f035477d975869d22d07da719f0be (patch)
treea50bbafafb5ec15fdbdbdf43e7524aa529c45310 /docs
parentebe6c3fab8614a26130f7c72dd35ecede11a0f71 (diff)
docs/system/ppc/powernv.rst: document KVM support status
Put in a more accessible place the reasoning behind our decision to officially drop KVM support in the powernv machine. Signed-off-by: Daniel Henrique Barboza <danielhb413@gmail.com> Message-Id: <20211130133153.444601-3-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater <clg@kaod.org>
Diffstat (limited to 'docs')
-rw-r--r--docs/system/ppc/powernv.rst13
1 files changed, 13 insertions, 0 deletions
diff --git a/docs/system/ppc/powernv.rst b/docs/system/ppc/powernv.rst
index edd45d1eaa..c8f9762342 100644
--- a/docs/system/ppc/powernv.rst
+++ b/docs/system/ppc/powernv.rst
@@ -54,6 +54,19 @@ Prebuilt images of ``skiboot`` and ``skiroot`` are made available on the
QEMU includes a prebuilt image of ``skiboot`` which is updated when a
more recent version is required by the models.
+Current acceleration status
+---------------------------
+
+KVM acceleration in Linux Power hosts is provided by the kvm-hv and
+kvm-pr modules. kvm-hv is adherent to PAPR and it's not compliant with
+powernv. kvm-pr in theory could be used as a valid accel option but
+this isn't supported by kvm-pr at this moment.
+
+To spare users from dealing with not so informative errors when attempting
+to use accel=kvm, the powernv machine will throw an error informing that
+KVM is not supported. This can be revisited in the future if kvm-pr (or
+any other KVM alternative) is usable as KVM accel for this machine.
+
Boot options
------------