On 07/12/17 14:18, Jan Beulich wrote: > @@ -1778,6 +1781,42 @@ void *sh_emulate_map_dest(struct vcpu *v > return map; > } > > +/**************************************************************************/ > +/* Optimization: If we see two emulated writes of zeros to the same > + * page-table without another kind of page fault in between, we guess > + * that this is a batch of changes (for process destruction) and > + * unshadow the page so we don't take a pagefault on every entry. This > + * should also make finding writeable mappings of pagetables much > + * easier. */ > + > +/* Look to see if this is the second emulated write in a row to this > + * page, and unshadow if it is */
Do you mind adjusting the comment style as part of the movement? Reviewed-by: Andrew Cooper <andrew.coop...@citrix.com> _______________________________________________ Xen-devel mailing list Xen-devel@lists.xenproject.org https://lists.xenproject.org/mailman/listinfo/xen-devel
