Change Details

While this change only creates ATTR_CONTIGUOUS mappings in a few places, it adds all of the necessary code for handling them once they exist, including demotion, protection, and removal. Consequently, new ATTR_CONTIGUOUS usage can be added (and tested) incrementally. The changes to copyinout.S and vmparam.h are really orthogonal and could be committed first.

While this change only creates ATTR_CONTIGUOUS mappings in a few places, it adds all of the necessary code for handling them once they exist, including demotion, protection, and removal. Consequently, new ATTR_CONTIGUOUS usage can be added (and tested) incrementally. The changes to copyinout.S and vmparam.h are really orthogonal and could be committed first. VM_LEVEL_0_ORDER is misconfigured when the page size is 16KB. It doesn't account for the page table page being 16KB.

While this change only creates ATTR_CONTIGUOUS mappings in a few places, it adds all of the necessary code for handling them once they exist, including demotion, protection, and removal. Consequently, new ATTR_CONTIGUOUS usage can be added (and tested) incrementally. The changes to copyinout.S and vmparam.h are really orthogonal and could be committed first. VM_LEVEL_0_ORDER is misconfigured when the page size is 16KB. It doesn't account for the page table page being 16KB.