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[Xen-devel] Swapping of PT pages
| To: | xen-devel@xxxxxxxxxxxxxxxxxxx |
|---|---|
| Subject: | [Xen-devel] Swapping of PT pages |
| From: | "Mike Sun" <msun@xxxxxxxxxx> |
| Date: | Tue, 19 Feb 2008 15:27:46 -0500 |
| Delivery-date: | Tue, 19 Feb 2008 12:28:13 -0800 |
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Hi -- In examining the domain save/migration code (xc_domain_save.c), I came across the step in which page table page frames in memory are canonicalized so that mfns are translated to pfns before those pages are written out to the saved image/destination host. This makes me wonder if a PV host is allowed to swap out page table pages if it so decided; if swapping of PT pages were allowed, then wouldn't certain page table pages not be canonicalized (since they would be on disk, not in any of the machine frames). This obviously be bad. Am I understanding things incorrectly? Thanks, Mike _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxxxxxxxx http://lists.xensource.com/xen-devel |
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