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Kernel: Fix comment

This commit is contained in:
Bananymous 2023-05-31 00:39:06 +03:00
parent 1f5a36f074
commit 650570e57d
1 changed files with 1 additions and 4 deletions
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5
kernel/arch/x86_64/PageTable.cpp
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@ -73,11 +73,8 @@ namespace Kernel
void PageTable::initialize_kernel() void PageTable::initialize_kernel()
{ {
// Map (0 -> phys_kernel_end) to (KERNEL_OFFSET -> virt_kernel_end)
m_highest_paging_struct = V2P(allocate_page_aligned_page()); m_highest_paging_struct = V2P(allocate_page_aligned_page());
memset((void*)P2V(m_highest_paging_struct), 0, PAGE_SIZE);
// Identity map 4 KiB -> kernel end. We don't map the first page since nullptr derefs should
// page fault. Also there isn't anything useful in that memory.
map_range_at(0, KERNEL_OFFSET, (uintptr_t)g_kernel_end - KERNEL_OFFSET, Flags::ReadWrite | Flags::Present); map_range_at(0, KERNEL_OFFSET, (uintptr_t)g_kernel_end - KERNEL_OFFSET, Flags::ReadWrite | Flags::Present);
} }