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Kernel: Improve comment about the system virtual memory map a bit

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This commit is contained in:
Andreas Kling 2019-12-15 16:13:08 +01:00
parent f01fd54d1b
commit 9ad151c665
1 changed files with 4 additions and 2 deletions
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6
Kernel/VM/MemoryManager.cpp
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@ -78,8 +78,10 @@ void MemoryManager::initialize_paging()
// 8 MB -> MAX Userspace physical pages (available for allocation!)
// Basic virtual memory map:
// 0 MB -> 8MB Identity mapped.
// 0xc0000000-0xffffffff Kernel-only virtual address space.
// 0 -> 4 KB Null page (so nullptr dereferences crash!)
// 4 KB -> 8 MB Identity mapped.
// 8 MB -> 3 GB Available to userspace.
// 3GB -> 4 GB Kernel-only virtual address space (>0xc0000000)
#ifdef MM_DEBUG
dbgprintf("MM: Quickmap will use %p\n", m_quickmap_addr.get());