Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753491AbbHaO5J (ORCPT ); Mon, 31 Aug 2015 10:57:09 -0400 Received: from mx1.redhat.com ([209.132.183.28]:52602 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753080AbbHaO5I (ORCPT ); Mon, 31 Aug 2015 10:57:08 -0400 Date: Mon, 31 Aug 2015 17:57:05 +0300 From: "Michael S. Tsirkin" To: Xiao Guangrong Cc: linux-kernel@vger.kernel.org, kvm@vger.kernel.org, Paolo Bonzini Subject: Re: [PATCH RFC 1/3] vmx: allow ioeventfd for EPT violations Message-ID: <20150831175300-mutt-send-email-mst@redhat.com> References: <1440925898-23440-1-git-send-email-mst@redhat.com> <1440925898-23440-2-git-send-email-mst@redhat.com> <55E3C1C6.7030603@linux.intel.com> <20150831102944-mutt-send-email-mst@redhat.com> <55E41134.3050103@linux.intel.com> <20150831141932-mutt-send-email-mst@redhat.com> <55E45541.5010206@linux.intel.com> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <55E45541.5010206@linux.intel.com> Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 555 Lines: 14 On Mon, Aug 31, 2015 at 09:23:13PM +0800, Xiao Guangrong wrote: > I have another question, the eventfd memory is never read by guest and it's always > a write MMIO VM-exit, why you build it on RO memslot? Why not just use normal MMIO page > instead? We do that at the moment, that's slower than PIO. -- MST -- 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/