mmu: Pseudo-recursive page tables #65
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gmacd
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orangecms
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orangecms
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orangecms
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This prototypes support for self-referential mappings by making use of pseudo-recursive page tables. These are "standard" page tables, but we allocate some portion of the address space they define to what we call "the recursive region". We then map the page tables that make up the non-recursive regions of the address space into the recursive region, using addresses derived from the addresses those tables map. These maps are set up early in boot, before entry to main, when setting up the mapping for the per-node data and per-CPU Mach structure for ccNUMA node 0 and CPU 0, respectively. Signed-off-by: Dan Cross <cross@gajendra.net>
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This prototypes support for self-referential mappings by making use of pseudo-recursive page tables. These are "standard" page tables, but we allocate some portion of the address space they define to what we call "the recursive region". We then map the page tables that make up the non-recursive regions of the address space into the recursive region, using addresses derived from the addresses those tables map.