Andrew Kaster 578d45b480 Kernel: Create and use USER_RANGE_CEILING ...

We had an inconsistency in valid user addresses. is_user_range() was
checking against the kernel base address, but previous changes caused
the maximum valid user addressable range to be 32 MiB below that.

This patch stops mmap(MAP_FIXED) of a range between these two bounds
from panic-ing the kernel in RangeAllocator::allocate_specific.

2021-07-11 19:42:00 +02:00

6.2 KiB

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