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Kernel: Kmalloc now has its memory statically allocated

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We don't use the memory map given by bootloader since this automatically
maps the memory to a available space.
This commit is contained in:
Bananymous
2023-04-14 14:15:26 +03:00
parent fdb4eb6042
commit 6a3b3213cf
5 changed files with 17 additions and 50 deletions
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4
kernel/arch/x86_64/MMU.cpp
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@@ -35,7 +35,9 @@ static uint64_t* allocate_page_aligned_page()
MMU::MMU()
{
// Identity map from 4 KiB -> 6 MiB
// FIXME: We should just identity map until g_kernel_end
// Identity map from 0 -> 6 MiB
m_highest_paging_struct = allocate_page_aligned_page();
uint64_t* pdpt = allocate_page_aligned_page();

4
kernel/arch/x86_64/boot.S
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@@ -41,9 +41,7 @@
# we will identity map first 4 MiB
# 0 MiB -> 1 MiB: bootloader stuff
# 1 MiB -> 4 MiB: kernel
# 4 MiB -> 5 MiB: kmalloc
# 5 MiB -> 6 MiB: kmalloc_fixed
# 1 MiB -> : kernel
.align 4096
boot_pml4:
.skip 512 * 8