commit b83c0d5fb4acad7d4b990bad9488fada0f2bf9a7
author Jens Wiklander <jens.wiklander@linaro.org> Thu Feb 07 14:07:43 2019 +0100
committer Jérôme Forissier <jerome.forissier@linaro.org> Mon May 13 08:31:23 2019 +0200
tree 9c6f64522aa2b836d47943ef6f07edc691ec1c7d
parent 985e1822a5f8379321bb652a15df05edceabad25

core: pager: record fobj in pmem instead of area

Records the fobj backing the physical page represented by a pmem instead
of struct tee_pager_area which was used prior to this patch.  Each fobj
can be used by several unrelated areas in the end allowing real shared
memory between multiple user context.

Reference counting for the page tables is increasing in activity since
entries which are hidden/unhidden also decrease/increase the count. This
is because there's no difference between unhiding a pmem or just mapping
it again in another page table.

The memory sharing is not fully taken advantage of in this patch.

Acked-by: Etienne Carriere <etienne.carriere@linaro.org>
Signed-off-by: Jens Wiklander <jens.wiklander@linaro.org>