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When checking if a physical address is in the DMAP region we assume all physical addresses between DMAP_MIN_PHYSADDR and DMAP_MAX_PHYSADDR are able to be accesses through the DMAP. It may be the case that there is device memory in this range that shouldn't be accessed through the DMAP mappings. Add a check to PHYS_IN_DMAP that the translated virtual address is a valid kernel address. To support code that already checks the address is valid add PHYS_IN_DMAP_RANGE. PR: 278233 Reviewed by: alc, markj Sponsored by: Arm Ltd Differential Revision: https://reviews.freebsd.org/D44677 |
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