RGBCube/serenity
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4 commits

Author SHA1 Message Date
Andreas Kling
7afc0fb9c8 Kernel: Forked children should inherit their RangeAllocator by copy. 
Otherwise we'll start handing out addresses that are very likely already in
use by existing ranges.
 2019-05-22 13:24:28 +02:00
Andreas Kling
b33cc7f772 Kernel: Remove some RangeAllocator debug spam. 2019-05-18 03:59:16 +02:00
Andreas Kling
4a6fcfbacf Kernel: Use a RangeAllocator for kernel-only virtual space allocation too. 2019-05-17 04:02:29 +02:00
Andreas Kling
c414e65498 Kernel: Implement a simple virtual address range allocator. 
This replaces the previous virtual address allocator which was basically
just "m_next_address += size;"

With this in place, virtual addresses can get reused, which cuts down on
the number of page tables created. When we implement ASLR some day, we'll
probably have to do page table deallocation, but for now page tables are
only deallocated once the process dies.
 2019-05-17 03:40:15 +02:00