[Qemu-devel] [PATCH 1/7] qemu-doc: Document minimum kernel version for KVM in x86_64

[Eduardo Habkost <ehabkost@redhat.com>]

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 <ehabkost@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