KVM paravirt: Add async PF initialization to PV guest.

Enable async PF in a guest if async PF capability is discovered.

Acked-by: Rik van Riel <riel@redhat.com>
Signed-off-by: Gleb Natapov <gleb@redhat.com>
Signed-off-by: Marcelo Tosatti <mtosatti@redhat.com>

1 files changed, 3 insertions, 0 deletions

diff --git a/Documentation/kernel-parameters.txt b/Documentation/kernel-parameters.txt
index 8b61c9360999..369580da1953 100644
--- a/Documentation/kernel-parameters.txt
+++ b/Documentation/kernel-parameters.txt
@@ -1707,6 +1707,9 @@ and is between 256 and 4096 characters. It is defined in the file
 
         no-kvmclock     [X86,KVM] Disable paravirtualized KVM clock driver
 
+        no-kvmapf       [X86,KVM] Disable paravirtualized asynchronous page
+                        fault handling.
+
         nolapic         [X86-32,APIC] Do not enable or use the local APIC.
 
         nolapic_timer   [X86-32,APIC] Do not use the local APIC timer.