KVM: Plan obsolescence of kernel allocated slots, paravirt mmu

These features are unused by modern userspace and can go away.  Paravirt
mmu needs to stay a little longer for live migration.

Signed-off-by: Avi Kivity <avi@redhat.com>

1 files changed, 30 insertions, 0 deletions

diff --git a/Documentation/feature-removal-schedule.txt b/Documentation/feature-removal-schedule.txt
index ea401495528d..db205276bb53 100644
--- a/Documentation/feature-removal-schedule.txt
+++ b/Documentation/feature-removal-schedule.txt
@@ -538,3 +538,33 @@ Why:	Duplicate functionality with the gspca_zc3xx driver, zc0301 only
         sensors) wich are also supported by the gspca_zc3xx driver
         (which supports 53 USB-ID's in total)
 Who:    Hans de Goede <hdegoede@redhat.com>
+
+----------------------------
+
+What:   KVM memory aliases support
+When:   July 2010
+Why:    Memory aliasing support is used for speeding up guest vga access
+        through the vga windows.
+
+        Modern userspace no longer uses this feature, so it's just bitrotted
+        code and can be removed with no impact.
+Who:    Avi Kivity <avi@redhat.com>
+
+----------------------------
+
+What:   KVM kernel-allocated memory slots
+When:   July 2010
+Why:    Since 2.6.25, kvm supports user-allocated memory slots, which are
+        much more flexible than kernel-allocated slots.  All current userspace
+        supports the newer interface and this code can be removed with no
+        impact.
+Who:    Avi Kivity <avi@redhat.com>
+
+----------------------------
+
+What:   KVM paravirt mmu host support
+When:   January 2011
+Why:    The paravirt mmu host support is slower than non-paravirt mmu, both
+        on newer and older hardware.  It is already not exposed to the guest,
+        and kept only for live migration purposes.
+Who:    Avi Kivity <avi@redhat.com>