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4201098e97
Reclaim may free page table pages that are required to handle current page fault. This causes a page leak, and, after sufficent number of specific page fault+reclaim pairs, we run out of reclaimable pages and hit: ASSERT (MinAcc != (UINT64)-1); To remedy, prevent pages essential to handling current page fault: (1) from being considered as reclaim candidates (first reclaim phase) (2) from being freed as part of "branch cleanup" (second reclaim phase) Signed-off-by: Damian Nikodem <damian.nikodem@intel.com> Cc: Eric Dong <eric.dong@intel.com> Reviewed-by: Ray Ni <ray.ni@intel.com> Reviewed-by: Jian J Wang <jian.j.wang@intel.com> Cc: Laszlo Ersek <lersek@redhat.com> Cc: Krzysztof Rusocki <krzysztof.rusocki@intel.com>