tree 3d801b67474d3fe57d268c4eb8e573d8cb14a584
parent 034702a64a6692a8d5d0d9630064a014fc633728
author Juergen Gross <jgross@suse.com> 1484055172 +0100
committer Boris Ostrovsky <boris.ostrovsky@oracle.com> 1485733707 -0500

xen/netback: set default upper limit of tx/rx queues to 8

The default for the maximum number of tx/rx queues of one interface is
the number of cpus of the system today. As each queue pair reserves 512
grant pages this default consumes a ridiculous number of grants for
large guests.

Limit the queue number to 8 as default. This value can be modified
via a module parameter if required.

Signed-off-by: Juergen Gross <jgross@suse.com>
Reviewed-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>
Signed-off-by: Boris Ostrovsky <boris.ostrovsky@oracle.com>