From mboxrd@z Thu Jan 1 00:00:00 1970 From: Igor Mammedov Subject: [PATCH] vhost: support upto 509 memory regions Date: Fri, 13 Feb 2015 15:49:59 +0000 Message-ID: <1423842599-5174-1-git-send-email-imammedo@redhat.com> Cc: mst@redhat.com, kvm@vger.kernel.org, netdev@vger.kernel.org, pbonzini@redhat.com To: linux-kernel@vger.kernel.org Return-path: Sender: linux-kernel-owner@vger.kernel.org List-Id: netdev.vger.kernel.org since commit 1d4e7e3 kvm: x86: increase user memory slots to 509 it became possible to use a bigger amount of memory slots, which is used by memory hotplug for registering hotplugged memory. However QEMU aborts if it's used with more than ~60 pc-dimm devices and vhost-net since host kernel in module vhost-net refuses to accept more than 65 memory regions. Increasing VHOST_MEMORY_MAX_NREGIONS from 65 to 509 to match KVM_USER_MEM_SLOTS fixes issue for vhost-net. Signed-off-by: Igor Mammedov --- drivers/vhost/vhost.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/drivers/vhost/vhost.c b/drivers/vhost/vhost.c index 2ee2826..ecbd7a4 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -29,7 +29,7 @@ #include "vhost.h" enum { - VHOST_MEMORY_MAX_NREGIONS = 64, + VHOST_MEMORY_MAX_NREGIONS = 509, VHOST_MEMORY_F_LOG = 0x1, }; -- 1.8.3.1