From patchwork Tue Jun 7 12:58:14 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: "Michael S. Tsirkin" X-Patchwork-Id: 9161179 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D24B560571 for ; Tue, 7 Jun 2016 13:20:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id C197625EF7 for ; Tue, 7 Jun 2016 13:20:02 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id B59E826E1A; Tue, 7 Jun 2016 13:20:02 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from lists.gnu.org (lists.gnu.org [208.118.235.17]) (using TLSv1 with cipher AES256-SHA (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id B388C25EF7 for ; Tue, 7 Jun 2016 13:20:01 +0000 (UTC) Received: from localhost ([::1]:49676 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bAGvI-0001xE-Qg for patchwork-qemu-devel@patchwork.kernel.org; Tue, 07 Jun 2016 09:20:00 -0400 Received: from eggs.gnu.org ([2001:4830:134:3::10]:54933) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bAGaO-0007si-6H for qemu-devel@nongnu.org; Tue, 07 Jun 2016 08:58:27 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1bAGaJ-0003FS-9T for qemu-devel@nongnu.org; Tue, 07 Jun 2016 08:58:23 -0400 Received: from mx1.redhat.com ([209.132.183.28]:54336) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1bAGaJ-0003FO-4L for qemu-devel@nongnu.org; Tue, 07 Jun 2016 08:58:19 -0400 Received: from int-mx09.intmail.prod.int.phx2.redhat.com (int-mx09.intmail.prod.int.phx2.redhat.com [10.5.11.22]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mx1.redhat.com (Postfix) with ESMTPS id 85C5F3B71B; Tue, 7 Jun 2016 12:58:18 +0000 (UTC) Received: from redhat.com (ovpn-116-19.ams2.redhat.com [10.36.116.19]) by int-mx09.intmail.prod.int.phx2.redhat.com (8.14.4/8.14.4) with SMTP id u57CwFqi018036; Tue, 7 Jun 2016 08:58:16 -0400 Date: Tue, 7 Jun 2016 15:58:14 +0300 From: "Michael S. Tsirkin" To: qemu-devel@nongnu.org Message-ID: <20160607155814-mutt-send-email-mst@redhat.com> References: <1465304171-10874-1-git-send-email-mst@redhat.com> MIME-Version: 1.0 Content-Disposition: inline In-Reply-To: <1465304171-10874-1-git-send-email-mst@redhat.com> X-Mutt-Fcc: =sent X-Scanned-By: MIMEDefang 2.68 on 10.5.11.22 X-Greylist: Sender IP whitelisted, not delayed by milter-greylist-4.5.16 (mx1.redhat.com [10.5.110.30]); Tue, 07 Jun 2016 12:58:18 +0000 (UTC) X-detected-operating-system: by eggs.gnu.org: GNU/Linux 2.2.x-3.x [generic] X-Received-From: 209.132.183.28 Subject: [Qemu-devel] [PULL v2 23/25] pc-dimm: get memory region from ->get_memory_region() X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Peter Maydell , Xiao Guangrong , Stefan Hajnoczi , Igor Mammedov Errors-To: qemu-devel-bounces+patchwork-qemu-devel=patchwork.kernel.org@nongnu.org Sender: "Qemu-devel" X-Virus-Scanned: ClamAV using ClamSMTP From: Xiao Guangrong Curretly, the memory region of backed memory is all directly mapped to guest's address space, however, it will be not true for nvdimm device if we introduce nvdimm label which only can be indirectly accessed by ACPI DSM method Also it improves the comments a bit to reflect this fact Signed-off-by: Xiao Guangrong Reviewed-by: Michael S. Tsirkin Signed-off-by: Michael S. Tsirkin Reviewed-by: Stefan Hajnoczi --- include/hw/mem/pc-dimm.h | 3 ++- hw/mem/pc-dimm.c | 3 ++- 2 files changed, 4 insertions(+), 2 deletions(-) diff --git a/include/hw/mem/pc-dimm.h b/include/hw/mem/pc-dimm.h index 8cdc326..6024627 100644 --- a/include/hw/mem/pc-dimm.h +++ b/include/hw/mem/pc-dimm.h @@ -58,7 +58,8 @@ typedef struct PCDIMMDevice { /** * PCDIMMDeviceClass: - * @get_memory_region: returns #MemoryRegion associated with @dimm + * @get_memory_region: returns #MemoryRegion associated with @dimm which + * is directly mapped into the physical address space of guest */ typedef struct PCDIMMDeviceClass { /* private */ diff --git a/hw/mem/pc-dimm.c b/hw/mem/pc-dimm.c index 9e7de56..70b9451 100644 --- a/hw/mem/pc-dimm.c +++ b/hw/mem/pc-dimm.c @@ -354,8 +354,9 @@ static void pc_dimm_get_size(Object *obj, Visitor *v, const char *name, int64_t value; MemoryRegion *mr; PCDIMMDevice *dimm = PC_DIMM(obj); + PCDIMMDeviceClass *ddc = PC_DIMM_GET_CLASS(obj); - mr = host_memory_backend_get_memory(dimm->hostmem, errp); + mr = ddc->get_memory_region(dimm); value = memory_region_size(mr); visit_type_int(v, name, &value, errp);