The default set of KVM CPU features require the host kernel to support them. KVM_PV_EOI is the newest one, and was included on Linux v3.6 (Linux commit ae7a2a3f).
Running on an old host might break management software expectations because the latest machine-type won't be runnable while older machine-types might be runnable. Document v3.6 as the minimum kernel version for KVM on x86_64. Signed-off-by: Eduardo Habkost <ehabk...@redhat.com> --- qemu-doc.texi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/qemu-doc.texi b/qemu-doc.texi index ecd186a159..be45b6b6f6 100644 --- a/qemu-doc.texi +++ b/qemu-doc.texi @@ -37,6 +37,7 @@ * QEMU System emulator for non PC targets:: * QEMU Guest Agent:: * QEMU User space emulator:: +* System requirements:: * Implementation notes:: * Deprecated features:: * License:: @@ -2348,6 +2349,14 @@ Act as if the host page size was 'pagesize' bytes Run the emulation in single step mode. @end table +@node System requirements +@chapter System requirements + +@section KVM kernel module + +On x86_64 hosts, the default set of CPU features enabled by the KVM accelerator +require the host to be running Linux v3.6 or newer. + @include qemu-tech.texi -- 2.13.6
