From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: from e23smtp08.au.ibm.com (e23smtp08.au.ibm.com [202.81.31.141]) (using TLSv1 with cipher CAMELLIA256-SHA (256/256 bits)) (No client certificate requested) by lists.ozlabs.org (Postfix) with ESMTPS id E7AC81A01DC for ; Thu, 24 Dec 2015 20:23:53 +1100 (AEDT) Received: from localhost by e23smtp08.au.ibm.com with IBM ESMTP SMTP Gateway: Authorized Use Only! Violators will be prosecuted for from ; Thu, 24 Dec 2015 19:23:51 +1000 Received: from d23relay10.au.ibm.com (d23relay10.au.ibm.com [9.190.26.77]) by d23dlp02.au.ibm.com (Postfix) with ESMTP id E37782BB0051 for ; Thu, 24 Dec 2015 20:23:44 +1100 (EST) Received: from d23av04.au.ibm.com (d23av04.au.ibm.com [9.190.235.139]) by d23relay10.au.ibm.com (8.14.9/8.14.9/NCO v10.0) with ESMTP id tBO9NZBH2293988 for ; Thu, 24 Dec 2015 20:23:44 +1100 Received: from d23av04.au.ibm.com (localhost [127.0.0.1]) by d23av04.au.ibm.com (8.14.4/8.14.4/NCO v10.0 AVout) with ESMTP id tBO9NBYX032715 for ; Thu, 24 Dec 2015 20:23:11 +1100 Message-ID: <567BB96D.6050504@linux.vnet.ibm.com> Date: Thu, 24 Dec 2015 14:52:53 +0530 From: Anshuman Khandual MIME-Version: 1.0 To: David Gibson , paulus@samba.org, benh@kernel.crashing.org, bharata@linux.vnet.ibm.com CC: lvivier@redhat.com, thuth@redhat.com, linuxppc-dev@lists.ozlabs.org Subject: Re: [RFC 0/3] Prototype PAPR hash page table resizing (guest side) References: <1450761298-12172-1-git-send-email-david@gibson.dropbear.id.au> In-Reply-To: <1450761298-12172-1-git-send-email-david@gibson.dropbear.id.au> Content-Type: text/plain; charset=utf-8 List-Id: Linux on PowerPC Developers Mail List List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , On 12/22/2015 10:44 AM, David Gibson wrote: > I've discussed with Paul and Ben previously the possibility of > extending PAPR to allow changing the size of a running guest's hash > page table (HPT). This would allow for much more flexible memory > hotplug, since the HPT wouldn't have to be sized in advance for the > maximum possible memory size of the guest. Does it include reducing the size of HPT as well ?