From c9ce42f72fd0ba180fd35539829e4139dca31494 Mon Sep 17 00:00:00 2001
From: Igor Mammedov <imammedo@redhat.com>
Date: Thu, 2 Jul 2015 15:08:11 +0200
Subject: [PATCH] vhost: add max_mem_regions module parameter

it became possible to use a bigger amount of memory
slots, which is used by memory hotplug for
registering hotplugged memory.
However QEMU crashes if it's used with more than ~60
pc-dimm devices and vhost-net enabled since host kernel
in module vhost-net refuses to accept more than 64
memory regions.

Allow to tweak limit via max_mem_regions module paramemter
with default value set to 64 slots.

Signed-off-by: Igor Mammedov <imammedo@redhat.com>
Signed-off-by: Michael S. Tsirkin <mst@redhat.com>
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