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2 Commits

Author SHA1 Message Date
Adin Scannell a7a8d07d7d Add separate Recycle method for allocator. 
This improves debugging for pagetable-related issues.

PiperOrigin-RevId: 209827795
Change-Id: I4cfa11664b0b52f26f6bc90a14c5bb106f01e038
 2018-08-22 14:16:04 -07:00
Adin Scannell 1b5062263b Add allocator abstraction for page tables. 
In order to prevent possible garbage collection and reuse of page table
pages prior to invalidation, introduce a former allocator abstraction
that can ensure entries are held during a single traversal. This also
cleans up the abstraction and splits it out of the machine itself.

PiperOrigin-RevId: 199581636
Change-Id: I2257d5d7ffd9c36f9b7ecd42f769261baeaf115c
 2018-06-06 21:48:24 -07:00