From 3e8f7158153f035477d975869d22d07da719f0be Mon Sep 17 00:00:00 2001 From: Daniel Henrique Barboza Date: Fri, 17 Dec 2021 17:57:13 +0100 Subject: docs/system/ppc/powernv.rst: document KVM support status MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 Message-Id: <20211130133153.444601-3-danielhb413@gmail.com> Signed-off-by: Cédric Le Goater --- docs/system/ppc/powernv.rst | 13 +++++++++++++ 1 file changed, 13 insertions(+) (limited to 'docs/system/ppc') 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 ------------ -- cgit v1.2.3