Re: port-xen/52016: Mismatch between mem_clusters and pmap_enter bounds check

[coypu%SDF.ORG@localhost]

The following reply was made to PR port-xen/52016; it has been noted by GNATS.

From: coypu%SDF.ORG@localhost
To: Manuel Bouyer <bouyer%antioche.eu.org@localhost>
Cc: gnats-bugs%NetBSD.org@localhost
Subject: Re: port-xen/52016: Mismatch between mem_clusters and pmap_enter
 bounds check
Date: Wed, 1 Mar 2017 12:03:10 +0000

 From a really far from sufficiently thorough look at linux, it looks
 like it might be equivalent to putting stuff that is directly accessed
 within [pmap_pa_start,pmap_pa_end) and having magic to map it to
 "identity".
 
 And we can decide for domU that some stuff points to a dummy page and
 so HYPERVISOR_mmu_update doesn't fail for it.