From: Christoph Lameter <clameter@sgi.com>
To: Avi Kivity <avi@qumranet.com>
Cc: kvm-devel@lists.sourceforge.net, linux-mm@kvack.org,
Daniel J Blueman <daniel.blueman@quadrics.com>,
Andrea Arcangeli <andrea@qumranet.com>
Subject: Re: [kvm-devel] mmu notifiers
Date: Tue, 15 Jan 2008 09:39:25 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0801150938260.9893@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <478C62F8.2070702@qumranet.com>
On Tue, 15 Jan 2008, Avi Kivity wrote:
> > Duh. Impossible. Two instances of Linux cannot share page structs. So how
> > are you doing this? Or is this just an idea?
>
> I was describing one Linux host running two guest instances. The page structs
> are in the host, so they are shared by mmap().
Ahh.. Okay I was talking about a guest exporting its memory to another
guest.
> kvm userspace is just an ordinary host process, it can mmap() any file it
> likes and then assign that virtual memory range to the guest (as guest
> physical memory).
But then the guest does not have its own page struct to manage the memory.
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next prev parent reply other threads:[~2008-01-15 17:39 UTC|newest]
Thread overview: 23+ messages / expand[flat|nested] mbox.gz Atom feed top
2008-01-09 18:19 Andrea Arcangeli
2008-01-09 21:54 ` Christoph Lameter
2008-01-10 11:44 ` [kvm-devel] " Avi Kivity
2008-01-10 13:16 ` Robin Holt
2008-01-10 13:27 ` Avi Kivity
2008-01-10 14:50 ` Robin Holt
2008-01-10 19:06 ` Christoph Lameter
2008-01-12 19:56 ` Avi Kivity
2008-01-10 19:04 ` Christoph Lameter
2008-01-12 19:51 ` Avi Kivity
2008-01-13 12:09 ` Robin Holt
2008-01-13 12:28 ` Avi Kivity
2008-01-14 19:51 ` Christoph Lameter
2008-01-15 7:43 ` Avi Kivity
2008-01-14 19:49 ` Christoph Lameter
2008-01-15 7:38 ` Avi Kivity
2008-01-15 17:39 ` Christoph Lameter [this message]
2008-01-15 17:53 ` Avi Kivity
2008-01-15 17:57 ` Christoph Lameter
2008-01-15 18:06 ` Avi Kivity
2008-01-15 18:16 ` Christoph Lameter
2008-01-16 7:39 ` Avi Kivity
2008-01-16 18:08 ` Christoph Lameter
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