From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from eggs.gnu.org ([2001:4830:134:3::10]:56663) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZqciH-0005sQ-4v for qemu-devel@nongnu.org; Mon, 26 Oct 2015 04:01:06 -0400 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1ZqciD-0001zp-4U for qemu-devel@nongnu.org; Mon, 26 Oct 2015 04:01:05 -0400 Received: from e28smtp01.in.ibm.com ([122.248.162.1]:48325) by eggs.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1ZqciC-0001wv-CH for qemu-devel@nongnu.org; Mon, 26 Oct 2015 04:01:01 -0400 Received: from /spool/local by e28smtp01.in.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Mon, 26 Oct 2015 13:30:56 +0530 Received: from d28relay03.in.ibm.com (d28relay03.in.ibm.com [9.184.220.60]) by d28dlp02.in.ibm.com (Postfix) with ESMTP id D41033940019 for ; Mon, 26 Oct 2015 13:30:51 +0530 (IST) Received: from d28av02.in.ibm.com (d28av02.in.ibm.com [9.184.220.64]) by d28relay03.in.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id t9Q80oZY6095318 for ; Mon, 26 Oct 2015 13:30:51 +0530 Received: from d28av02.in.ibm.com (localhost [127.0.0.1]) by d28av02.in.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id t9Q80mPT010668 for ; Mon, 26 Oct 2015 13:30:49 +0530 From: Bharata B Rao Date: Mon, 26 Oct 2015 13:30:38 +0530 Message-Id: <1445846438-7324-3-git-send-email-bharata@linux.vnet.ibm.com> In-Reply-To: <1445846438-7324-1-git-send-email-bharata@linux.vnet.ibm.com> References: <1445846438-7324-1-git-send-email-bharata@linux.vnet.ibm.com> Subject: [Qemu-devel] [PATCH v2 2/2] spapr: Force gaps between DIMM's GPA List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , To: qemu-devel@nongnu.org Cc: imammedo@redhat.com, mst@redhat.com, Bharata B Rao , david@gibson.dropbear.id.au Mapping DIMMs non contiguously allows to workaround virtio bug reported earlier: http://lists.nongnu.org/archive/html/qemu-devel/2015-08/msg00522.html In this case guest kernel doesn't allocate buffers that can cross DIMM boundary keeping each buffer local to a DIMM. Suggested-by: Michael S. Tsirkin Signed-off-by: Bharata B Rao Reviewed-by: Igor Mammedov --- hw/ppc/spapr.c | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-) diff --git a/hw/ppc/spapr.c b/hw/ppc/spapr.c index f29bb10..1a8df95 100644 --- a/hw/ppc/spapr.c +++ b/hw/ppc/spapr.c @@ -2170,7 +2170,7 @@ static void spapr_memory_plug(HotplugHandler *hotplug_dev, DeviceState *dev, goto out; } - pc_dimm_memory_plug(dev, &ms->hotplug_memory, mr, align, false, &local_err); + pc_dimm_memory_plug(dev, &ms->hotplug_memory, mr, align, true, &local_err); if (local_err) { goto out; } -- 2.1.0