K 10
svn:author
V 4
neel
K 8
svn:date
V 27
2013-09-24T18:46:18.293543Z
K 7
svn:log
V 454
Use 'vm_fault_quick_hold_pages()' to hold pages belonging to the guest address
space before accessing them in the host.

We used to use 'vm_fault_hold()' prior to this change. This worked correctly
but had the drawback that it would 'pmap_enter()' the gpa->hpa mapping
unconditionally in the nested pmap. This in turn would cause unnecessary
superpage demotions and promotions if the 'gpa' happened to be a superpage
mapping.

Discussed with:	alc@, kib@

END