Mailing List Archive

[PATCH v2 5/5] 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 <>
Reviewed-by: Jan Beulich <>
Documentation/admin-guide/kernel-parameters.txt | 7 +++++++
1 file changed, 7 insertions(+)

diff --git a/Documentation/admin-guide/kernel-parameters.txt b/Documentation/admin-guide/kernel-parameters.txt
index 02d4adbf98d2..526d65d8573a 100644
--- a/Documentation/admin-guide/kernel-parameters.txt
+++ b/Documentation/admin-guide/kernel-parameters.txt
@@ -5978,6 +5978,13 @@
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).
Disables the PV optimizations forcing the guest to run
as generic guest with no PV drivers. Currently support