On 11/05/16 09:15, Jan Beulich wrote: >>>> On 11.05.16 at 09:00, <jgr...@suse.com> wrote: >> Having a Xen specific pte flag seems to be much more intrusive than >> having an early boot page fault handler consisting of just one line >> being capable to mimic the default handler in just one aspect (see >> attached patch - only compile tested). > > Well, this simple handler may serve the purpose here, but what's > the effect of having it in place on actual #PF (resulting e.g. from > a bug somewhere)? I.e. what diagnostic information will be > available to the developer in that case, now that the hypervisor > won't help out anymore?
Good point. As fixup_exception() is returning 0 in this case we can set the #PF handler to NULL again and retry the failing instruction. This will then lead to the same hypervisor handled case as today. Juergen _______________________________________________ Xen-devel mailing list Xen-devel@lists.xen.org http://lists.xen.org/xen-devel
