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Re: [Qemu-devel] Recursion in cpu_physical_memory_rw
From: |
Herbert Xu |
Subject: |
Re: [Qemu-devel] Recursion in cpu_physical_memory_rw |
Date: |
Thu, 16 Nov 2006 16:11:58 +1100 |
User-agent: |
Mutt/1.5.9i |
On Wed, Nov 15, 2006 at 01:03:34PM -0600, Anthony Liguori wrote:
>
> >The scenario here is a compromised guest attempting to harm a host such
> >as Xen.
>
> The only "harm" done to a host is that the process will take as much CPU
> as it can get. This is really only a problem in Xen because the device
> model is in Domain-0. Once the device model is in a different domain,
> it doesn't matter anymore as the normal scheduler parameters can be used
> to ensure that no other hosts are harmed.
Actually it'll still be a problem in a driver domain unless it (and the
hardware) is dedicated to a single guest.
Cheers,
--
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Email: Herbert Xu ~{PmV>HI~} <address@hidden>
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