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Re: [Xen-devel] Do we clear a page when it's allocated to a guest?
| To: | "Li, Xin B" <xin.b.li@xxxxxxxxx>, Xen-devel <xen-devel@xxxxxxxxxxxxxxxxxxx> |
|---|---|
| Subject: | Re: [Xen-devel] Do we clear a page when it's allocated to a guest? |
| From: | Keir Fraser <keir@xxxxxxxxxxxxx> |
| Date: | Wed, 29 Nov 2006 10:23:42 +0000 |
| Delivery-date: | Wed, 29 Nov 2006 02:23:52 -0800 |
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| Thread-index: | AccTkgAf0wNFQJ0kSFCQQsg0z/Rt1QADnEsI |
| Thread-topic: | [Xen-devel] Do we clear a page when it's allocated to a guest? |
| User-agent: | Microsoft-Entourage/11.2.5.060620 |
No. Pages are expected to be cleared by a guest when it frees them if it cares about secrecy. Also Xen will clear pages that belong to a guest when a guest dies (since the guest is no longer around to do it for itself). But a guest cannot assume pages it allocates are zeroed. -- Keir On 29/11/06 08:40, "Li, Xin B" <xin.b.li@xxxxxxxxx> wrote: > thanks > -Xin > > _______________________________________________ > Xen-devel mailing list > Xen-devel@xxxxxxxxxxxxxxxxxxx > http://lists.xensource.com/xen-devel _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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