[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] Re: [Xen-devel] [PATCH v2 2/6] x86/EPT: don't walk entire page tables when changing types on a range
At 13:29 +0100 on 22 Apr (1398169764), Jan Beulich wrote: > This requires a new P2M backend hook and a little bit of extra care on > accounting in the generic function. > > Note that even on leaf entries we must not immediately set the new > type (in an attempt to avoid the EPT_MISCONFIG VM exits), since the > global accounting in p2m_change_type_range() gets intentionally done > only after updating page tables (or else the update there would > conflict with the function's own use of p2m_is_logdirty_range()), and > the correct type can only be calculated with that in place. > > Signed-off-by: Jan Beulich <jbeulich@xxxxxxxx> Looks good, once 1/6 is ready. Reviewed-by: Tim Deegan <tim@xxxxxxx> _______________________________________________ Xen-devel mailing list Xen-devel@xxxxxxxxxxxxx http://lists.xen.org/xen-devel
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