From mboxrd@z Thu Jan 1 00:00:00 1970 From: Anthony Liguori Subject: Re: [PATCH] QEMU support for virtio balloon driver Date: Sat, 08 Mar 2008 20:46:35 -0600 Message-ID: <47D34F8B.5030406@us.ibm.com> References: <1201209786831-git-send-email-aliguori@us.ibm.com> <4799115F.8010506@us.ibm.com> <20080125160857.GA17437@dmt> <479A162C.1060209@us.ibm.com> <479B8040.1000901@qumranet.com> <20080308192713.GA19321@dmt> <20080308205115.GA20105@dmt> Mime-Version: 1.0 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Cc: kvm-devel@lists.sourceforge.net, Andrea Arcangeli , Avi Kivity To: Marcelo Tosatti Return-path: In-Reply-To: <20080308205115.GA20105@dmt> List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: kvm-devel-bounces@lists.sourceforge.net Errors-To: kvm-devel-bounces@lists.sourceforge.net List-Id: kvm.vger.kernel.org Marcelo Tosatti wrote: >> How to proceed now? Do we want to efficiently support ballooning without >> mmu notifiers? If so, an ioctl to zap the mmu is necessary as discussed >> before. >> > > Err, actually zapping the mmu is necessary to guarantee guest will not > use stale shadow entries vs entries pointing to old unreacheable pages. > I'm happy to just not madvise() with older host userspaces. Doing an ioctl and pausing all the VCPUs is pretty ugly. Regards, Anthony Liguori ------------------------------------------------------------------------- This SF.net email is sponsored by: Microsoft Defy all challenges. Microsoft(R) Visual Studio 2008. http://clk.atdmt.com/MRT/go/vse0120000070mrt/direct/01/