From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:51206) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1e4hNw-0006IA-53 for qemu-devel@nongnu.org; Wed, 18 Oct 2017 01:59:20 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1e4hNt-0001Tj-3z for qemu-devel@nongnu.org; Wed, 18 Oct 2017 01:59:20 -0400 Received: from mx1.redhat.com ([209.132.183.28]:38734) by eggs.gnu.org with esmtps (TLS1.0:DHE_RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1e4hNs-0001Rf-Tw for qemu-devel@nongnu.org; Wed, 18 Oct 2017 01:59:17 -0400 Date: Wed, 18 Oct 2017 13:59:07 +0800 From: Fam Zheng Message-ID: <20171018055907.GA2521@lemon> References: <20171013170143.GB3370@work-vm> <20171013111403.293919fe@t450s.home> <20171015035318.GA22780@pxdev.xzpeter.org> <20171017035604.GJ4166@pxdev.xzpeter.org> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20171017035604.GJ4166@pxdev.xzpeter.org> Subject: Re: [Qemu-devel] host physical address width issues/questions for x86_64 List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: Peter Xu Cc: Prasad Singamsetty , ehabkost@redhat.com, "Dr. David Alan Gilbert" , qemu-devel@nongnu.org, Alex Williamson , Sunit Jain , pbonzini@redhat.com, rth@twiddle.net On Tue, 10/17 11:56, Peter Xu wrote: > I don't sure I know the reason. Anyway, it originated from one of > Fam's request for some NVMe testsr FWIW, I was basically trying to test a driver code under development with 48bit vIOMMU. I ended up using real hardware and also made the code compatible with lower bits IOMMU. Fam