[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH] xen/balloon: set ballooned out pages as invalid in p2m
On 02/07/14 10:40, David Vrabel wrote: > Since cd9151e26d31048b2b5e00fd02e110e07d2200c9 (xen/balloon: set a > mapping for ballooned out pages), a ballooned out page had its entry > in the p2m set to the MFN of one of the scratch pages. This means > that the p2m will contain many entries pointing to the same MFN. > > During a domain save, these many-to-one entries are not identified as > such and the scratch page is saved multiple times. On restore the > ballooned pages are populated with new frames and the domain may use > up its allocation before all pages can be restored. > > Since the original fix only needed to keep a mapping for the ballooned > page it is safe to set ballooned out pages as INVALID_P2M_ENTRY in the > p2m (as they were before). Thus preventing them from being saved and > re-populated on restore. Stefano acked v1 so I've applied to to stable/for-linus-2.16 and tagged for stable. David _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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