From mboxrd@z Thu Jan 1 00:00:00 1970 From: Xiao Guangrong Subject: Re: [PATCH v2 06/11] nvdimm acpi: initialize the resource used by NVDIMM ACPI Date: Sun, 14 Feb 2016 13:57:27 +0800 Message-ID: <56C01747.3030102@linux.intel.com> References: <1452624610-46945-1-git-send-email-guangrong.xiao@linux.intel.com> <1452624610-46945-7-git-send-email-guangrong.xiao@linux.intel.com> <20160208120337.44720b0b@nial.brq.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Content-Transfer-Encoding: 7bit Cc: pbonzini@redhat.com, gleb@kernel.org, mtosatti@redhat.com, stefanha@redhat.com, mst@redhat.com, rth@twiddle.net, ehabkost@redhat.com, dan.j.williams@intel.com, kvm@vger.kernel.org, qemu-devel@nongnu.org To: Igor Mammedov Return-path: Received: from mga11.intel.com ([192.55.52.93]:3831 "EHLO mga11.intel.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1751082AbcBNGFZ (ORCPT ); Sun, 14 Feb 2016 01:05:25 -0500 In-Reply-To: <20160208120337.44720b0b@nial.brq.redhat.com> Sender: kvm-owner@vger.kernel.org List-ID: On 02/08/2016 07:03 PM, Igor Mammedov wrote: > On Wed, 13 Jan 2016 02:50:05 +0800 > Xiao Guangrong wrote: > >> 32 bits IO port starting from 0x0a18 in guest is reserved for NVDIMM >> ACPI emulation. The table, NVDIMM_DSM_MEM_FILE, will be patched into >> NVDIMM ACPI binary code >> >> OSPM uses this port to tell QEMU the final address of the DSM memory >> and notify QEMU to emulate the DSM method > Would you need to pass control to QEMU if each NVDIMM had its whole > label area MemoryRegion mapped right after its storage MemoryRegion? > No, label data is not mapped into guest's address space and it only can be accessed by DSM method indirectly.