Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1756693Ab0DFQ2Q (ORCPT ); Tue, 6 Apr 2010 12:28:16 -0400 Received: from mx1.redhat.com ([209.132.183.28]:36933 "EHLO mx1.redhat.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1756219Ab0DFQ2J (ORCPT ); Tue, 6 Apr 2010 12:28:09 -0400 Message-ID: <4BBB6110.2080505@redhat.com> Date: Tue, 06 Apr 2010 19:28:00 +0300 From: Avi Kivity User-Agent: Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.1.9) Gecko/20100330 Fedora/3.0.4-1.fc12 Thunderbird/3.0.4 MIME-Version: 1.0 To: Andrew Morton CC: Jeremy Fitzhardinge , Dmitry Torokhov , linux-kernel@vger.kernel.org, pv-drivers@vmware.com, Dan Magenheimer Subject: Re: [PATCH] VMware Balloon driver References: <20100404215202.GA13020@dtor-ws.eng.vmware.com> <20100405142419.2c9bea3d.akpm@linux-foundation.org> <4BBA5E1C.10706@goop.org> <20100405151720.8a6ac5e3.akpm@linux-foundation.org> <4BBA6383.7070601@redhat.com> <20100405154023.c7e4f877.akpm@linux-foundation.org> In-Reply-To: <20100405154023.c7e4f877.akpm@linux-foundation.org> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org Content-Length: 1151 Lines: 35 On 04/06/2010 01:40 AM, Andrew Morton wrote: > On Tue, 06 Apr 2010 01:26:11 +0300 > Avi Kivity wrote: > > >> On 04/06/2010 01:17 AM, Andrew Morton wrote: >> >>>> The basic idea of the driver is to allow a guest system to give up >>>> memory it isn't using so it can be reused by other virtual machines (or >>>> the host itself). >>>> >>>> >>> So... does this differ in any fundamental way from what hibernation >>> does, via shrink_all_memory()? >>> >>> >> Just the _all_ bit, and the fact that we need to report the freed page >> numbers to the hypervisor. >> >> > So... why not tweak that, rather than implementing some parallel thing? > That's maybe 5 lines of code. Most of the code is focused on interpreting requests from the hypervisor and replying with the page numbers. -- error compiling committee.c: too many arguments to function -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/