From: Christoph Lameter <clameter@sgi.com>
To: Andrea Arcangeli <andrea@qumranet.com>
Cc: kvm-devel@lists.sourceforge.net, linux-mm@kvack.org,
Daniel J Blueman <daniel.blueman@quadrics.com>
Subject: Re: mmu notifiers
Date: Wed, 9 Jan 2008 13:54:59 -0800 (PST) [thread overview]
Message-ID: <Pine.LNX.4.64.0801091352320.12335@schroedinger.engr.sgi.com> (raw)
In-Reply-To: <20080109181908.GS6958@v2.random>
On Wed, 9 Jan 2008, Andrea Arcangeli wrote:
> This patch is a first basic implementation of the mmu notifiers. More
> methods can be added in the future.
>
> In short when the linux VM decides to free a page, it will unmap it
> from the linux pagetables. However when a page is mapped not just by
> the regular linux ptes, but also from the shadow pagetables, it's
> currently unfreeable by the linux VM.
Such a patch would also address issues that SGI has with exporting
mappings via XPMEM. Plus a variety of other uses. Go ahead and lets do
more in this area.
Are the KVM folks interested in exporting memory from one guest to
another? That may also become possible with some of the work that we have
in progress and that also requires a patch like this.
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next prev parent reply other threads:[~2008-01-09 21:54 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 [this message]
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
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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