Documentation: add xen.fifo_events kernel parameter description

The kernel boot parameter xen.fifo_events isn't listed in
Documentation/admin-guide/kernel-parameters.txt. Add it.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Link: https://lore.kernel.org/r/20201022094907.28560-6-jgross@suse.com
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 89d977f..935f890 100644 (file)
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5836,6 +5836,13 @@
                        After which time (jiffies) the event handling loop
                        should start to delay EOI handling. Default is 2.
 
+       xen.fifo_events=        [XEN]
+                       Boolean parameter to disable using fifo event handling
+                       even if available. Normally fifo event handling is
+                       preferred over the 2-level event handling, as it is
+                       fairer and the number of possible event channels is
+                       much higher. Default is on (use fifo events).
+
        nopv=           [X86,XEN,KVM,HYPER_V,VMWARE]
                        Disables the PV optimizations forcing the guest to run
                        as generic guest with no PV drivers. Currently support