From: Jeremy Fitzhardinge <jeremy@goop.org>
To: Wei Liu <liuw@liuw.name>
Cc: xen-devel@lists.xensource.com,
Christopher Benninger <chrisbenninger@gmail.com>
Subject: Re: MULTI_mmu_update, HYPERVISOR_mmu_update and pte entry
Date: Wed, 18 May 2011 01:09:59 -0700 [thread overview]
Message-ID: <1305706199.4198.0.camel@abulafia.goop.org> (raw)
In-Reply-To: <BANLkTimQMJ4MceFvJ+yMxuCa7Tdt_qdtEA@mail.gmail.com>
On Wed, 2011-05-18 at 13:47 +0800, Wei Liu wrote:
> On Wed, May 18, 2011 at 1:25 PM, Christopher Benninger
> <chrisbenninger@gmail.com> wrote:
> > Hi Jeremy,
> > I am definitely doing something weird, but on purpose. I am trying to
> > determine which process specifically owns the pte in question. I have a domU
> > module which I can ask for information, I just dont know how to get the ptr
> > provided, into a useful context I can send it.
>
> Most pte updates belong to current process. Maybe you can use CR3 to
> determine to which page table a specified pte belongs. But it may be
> hard to determine the actual task_struct IMHO.
If you can record it at the time of the setpte, its easy: "current" is
always the current task.
J
next prev parent reply other threads:[~2011-05-18 8:09 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-12 22:41 MULTI_mmu_update, HYPERVISOR_mmu_update and pte entry chrisbenninger
2011-05-17 22:29 ` Jeremy Fitzhardinge
2011-05-18 5:25 ` Christopher Benninger
2011-05-18 5:47 ` Wei Liu
2011-05-18 8:09 ` Jeremy Fitzhardinge [this message]
2011-05-19 17:37 ` Christopher Benninger
2011-05-19 17:49 ` Jeremy Fitzhardinge
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