[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] RE: Fw: [Xen-devel] Xen on /. again
> Question: > a) Does the balloon driver clean pages before releasing it to > other partitions? (I guess not) Yes it does. > b) Does the page-swap thas happens when a packet is received > clear the pages? (I guess not) There is a pool of pages that are used for network IO. They're not normally scrubbed when they get flipped, on the grounds that network packets could be sniffed on the wire anyhow. Pages are scrubbed before entering the pool. I guess we could have a config option that also zeroed the payload area of a packet when the skb is freed, for those that want belt and braces. [NB: one area we need to investigate is whether the kernel ever does decrypt in-place in the skb data area, and if so, throw the page out of the pool.] Ian ------------------------------------------------------- This SF.Net email is sponsored by: IntelliVIEW -- Interactive Reporting Tool for open source databases. Create drag-&-drop reports. Save time by over 75%! Publish reports on the web. Export to DOC, XLS, RTF, etc. Download a FREE copy at http://www.intelliview.com/go/osdn_nl _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxxxx https://lists.sourceforge.net/lists/listinfo/xen-devel
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