Physical memory range ownership for safe memory API#824
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sangho2 wants to merge 5 commits intosanghle/lvbs/vmap_copyfrom
Open
Physical memory range ownership for safe memory API#824sangho2 wants to merge 5 commits intosanghle/lvbs/vmap_copyfrom
sangho2 wants to merge 5 commits intosanghle/lvbs/vmap_copyfrom
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This PR adds support for physical memory range ownership, which is the last piece to make the VTL0/normal-world physical memory access API "safe". Now, our API is safe in the DMA/shared-memory sense:
External agents (VTL0, hypervisor, peripherals, ...) can still access those physical addresses but this is out of LiteBox/Rust's control. We do have the
protectmethod to prevent VTL0's access to them if needed.