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| author | Timon Kruiper <timonkruiper@gmail.com> | 2022-09-20 22:13:31 +0200 |
|---|---|---|
| committer | Andreas Kling <kling@serenityos.org> | 2022-10-01 14:09:01 +0200 |
| commit | 424a974e018862f0b75d85df1450fca68fa8845c (patch) | |
| tree | 7e83faf42339249ed121503b75f38ffd6b1a4d92 /Kernel/Memory | |
| parent | 1b60126d93096624e765dcd491002fab53ce59c0 (diff) | |
| download | serenity-424a974e018862f0b75d85df1450fca68fa8845c.zip | |
Kernel: Don't reserve Low Memory (0-1MB) on non-x86 architectures
This memory is only reserved on x86(-64) and is usable on other
architectures.
Diffstat (limited to 'Kernel/Memory')
| -rw-r--r-- | Kernel/Memory/MemoryManager.cpp | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/Kernel/Memory/MemoryManager.cpp b/Kernel/Memory/MemoryManager.cpp index 8035aee7df..5710235f62 100644 --- a/Kernel/Memory/MemoryManager.cpp +++ b/Kernel/Memory/MemoryManager.cpp @@ -243,7 +243,9 @@ UNMAP_AFTER_INIT void MemoryManager::parse_memory_map() // Register used memory regions that we know of. m_global_data.with([&](auto& global_data) { global_data.used_memory_ranges.ensure_capacity(4); +#if ARCH(I386) || ARCH(X86_64) global_data.used_memory_ranges.append(UsedMemoryRange { UsedMemoryRangeType::LowMemory, PhysicalAddress(0x00000000), PhysicalAddress(1 * MiB) }); +#endif global_data.used_memory_ranges.append(UsedMemoryRange { UsedMemoryRangeType::Kernel, PhysicalAddress(virtual_to_low_physical((FlatPtr)start_of_kernel_image)), PhysicalAddress(page_round_up(virtual_to_low_physical((FlatPtr)end_of_kernel_image)).release_value_but_fixme_should_propagate_errors()) }); if (multiboot_flags & 0x4) { |