From mboxrd@z Thu Jan 1 00:00:00 1970 Message-ID: <47861D3C.6070709@qumranet.com> Date: Thu, 10 Jan 2008 15:27:24 +0200 From: Avi Kivity MIME-Version: 1.0 Subject: Re: [kvm-devel] mmu notifiers References: <20080109181908.GS6958@v2.random> <47860512.3040607@qumranet.com> <20080110131612.GA1933@sgi.com> In-Reply-To: <20080110131612.GA1933@sgi.com> Content-Type: text/plain; charset=ISO-8859-1; format=flowed Content-Transfer-Encoding: 7bit Sender: owner-linux-mm@kvack.org Return-Path: To: Robin Holt Cc: Christoph Lameter , Andrea Arcangeli , kvm-devel@lists.sourceforge.net, linux-mm@kvack.org, Daniel J Blueman List-ID: Robin Holt wrote: > >> The patch does enable some nifty things; one example you may be familiar >> with is using page migration to move a guest from one numa node to another. >> > > xpmem allows one MPI rank to "export" his address space, a different > MPI rank to "import" that address space, and they share the same pages. > This allows sharing of things like stack and heap space. XPMEM also > provides a mechanism to share that PFN information across partition > boundaries so the pages become available on a different host. This, > of course, is dependent upon hardware that supports direct access to > the memory by the processor. > > So this is yet another instance of hardware that has a tlb that needs to be kept in sync with the page tables, yes? Excellent, the more users the patch has, the easier it will be to justify it. -- error compiling committee.c: too many arguments to function -- To unsubscribe, send a message with 'unsubscribe linux-mm' in the body to majordomo@kvack.org. For more info on Linux MM, see: http://www.linux-mm.org/ . Don't email: email@kvack.org