Cache colored domains can benefit from having p2m page tables allocated
with the same coloring schema so that isolation can be achieved also for
those kind of memory accesses.
In order to do that, the domain struct is passed to the allocator and the
MEMF_no_owner flag is used.
This will be useful also when NUMA will be supported on Arm.
Signed-off-by: Carlo Nonato <carlo.nonato@minervasys.tech>
Acked-by: Julien Grall <julien@xen.org>
Add a new PGC_no_buddy_merge flag that prevents the buddy algorithm in
free_heap_pages() from merging pages that have it set. As of now, only
PGC_static has this feature, but future work can extend it easier than
before.
Suggested-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: Carlo Nonato <carlo.nonato@minervasys.tech>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
PGC_static and PGC_extra needs to be preserved when assigning a page.
Define a new macro that groups those flags and use it instead of or'ing
every time.
To make preserved flags even more meaningful, they are kept also when
switching state in mark_page_free().
Signed-off-by: Carlo Nonato <carlo.nonato@minervasys.tech>
Reviewed-by: Jan Beulich <jbeulich@suse.com>
Introduce a new helper to initialize fields that have different uses for
free pages.
Signed-off-by: Carlo Nonato <carlo.nonato@minervasys.tech>
Acked-by: Jan Beulich <jbeulich@suse.com>
Carlo Nonato