From: chrisbenninger <chrisbenninger@gmail.com>
To: xen-devel@lists.xensource.com
Subject: MULTI_mmu_update, HYPERVISOR_mmu_update and pte entry
Date: Thu, 12 May 2011 15:41:43 -0700 [thread overview]
Message-ID: <BANLkTim1p6W=zq9MDoU+xkmrR2xvapQ4mA@mail.gmail.com> (raw)
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Hi, I am working on being able to determine which process owns a PTE being
changed during each MMU update in 64-bit paravirtualized mode. I have a
couple questions here.
1. When a linux DomU wants to make an update to a PTE, it calls
HYPERVISOR_mmu_update? In my case it appears to be calling MULTI_mmu_update
mostly. Are these two functions the only primary ways a VM will ask for an
MMU update?
2. The mmu_update struct that comes along with a MMU update has a *unint64_t
ptr* which is a machine address to the PTE being changed. Is there any way
to use this machine address and determine the pte_t or page from within a
DomU?
Thanks for any help you can give!
Chris Benninger
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next reply other threads:[~2011-05-12 22:41 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2011-05-12 22:41 chrisbenninger [this message]
2011-05-17 22:29 ` MULTI_mmu_update, HYPERVISOR_mmu_update and pte entry Jeremy Fitzhardinge
2011-05-18 5:25 ` Christopher Benninger
2011-05-18 5:47 ` Wei Liu
2011-05-18 8:09 ` Jeremy Fitzhardinge
2011-05-19 17:37 ` Christopher Benninger
2011-05-19 17:49 ` Jeremy Fitzhardinge
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