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| From: | Paolo Bonzini |
| Subject: | Re: [Qemu-devel] Re: [PATCH 28/40] xenner: libxc emu: evtchn |
| Date: | Tue, 02 Nov 2010 11:38:34 +0100 |
| User-agent: | Mozilla/5.0 (X11; U; Linux x86_64; en-US; rv:1.9.2.9) Gecko/20100921 Fedora/3.1.4-1.fc13 Lightning/1.0b3pre Mnenhy/0.8.3 Thunderbird/3.1.4 |
On 11/02/2010 11:31 AM, Gerd Hoffmann wrote:
Hi,(BTW, I noticed that Xenner does not limit guest segments like Xen does. Does it mean the guest can overwrite the Xenner kernel and effectively run ring0?)Yes. The guest also can modify page tables as it pleases. It is the vmx/svm container which protects the host, not the xenner kernel.
Yes, got it. I was trying to understand exactly which parts are guest-facing (the answer is "everything") and which are only xenner-facing (and here the answer is "none" :)).
Paolo
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