Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755693AbbFQNPz (ORCPT ); Wed, 17 Jun 2015 09:15:55 -0400 Received: from mx1.redhat.com ([209.132.183.28]:48187 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S932350AbbFQNPO (ORCPT ); Wed, 17 Jun 2015 09:15:14 -0400 From: Igor Mammedov To: linux-kernel@vger.kernel.org Cc: mst@redhat.com, kvm@vger.kernel.org, pbonzini@redhat.com, andrey@xdel.ru, digitaleric@google.com Subject: [PATCH v2 6/6] vhost: support upto 509 memory regions Date: Wed, 17 Jun 2015 15:14:59 +0200 Message-Id: <1434546899-5296-7-git-send-email-imammedo@redhat.com> In-Reply-To: <1434546899-5296-1-git-send-email-imammedo@redhat.com> References: <1434546899-5296-1-git-send-email-imammedo@redhat.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1245 Lines: 41 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 crashes 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 64 memory regions. Increase VHOST_MEMORY_MAX_NREGIONS limit from 64 to 509 to match KVM_USER_MEM_SLOTS to fix issue for vhost-net and current QEMU versions. 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 78290b7..e93023e 100644 --- a/drivers/vhost/vhost.c +++ b/drivers/vhost/vhost.c @@ -37,7 +37,7 @@ MODULE_PARM_DESC(translation_cache, " Set to 0 to disable. (default: 1)"); enum { - VHOST_MEMORY_MAX_NREGIONS = 64, + VHOST_MEMORY_MAX_NREGIONS = 509, VHOST_MEMORY_F_LOG = 0x1, }; -- 1.8.3.1 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/