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2TB. The latter can be increased in 512GB chunks by adjusting the lower address, however more work will be needed to increase the former. There is still some work needed to only create a DMAP region for the RAM address space as on ARM architectures all mappings should have the same memory attributes, and these will be different for device and normal memory. Reviewed by: kib Obtained from: ABT Systems Ltd Relnotes: yes Sponsored by: The FreeBSD Foundation Differential Revision: https://reviews.freebsd.org/D5859
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