From 424a974e018862f0b75d85df1450fca68fa8845c Mon Sep 17 00:00:00 2001 From: Timon Kruiper Date: Tue, 20 Sep 2022 22:13:31 +0200 Subject: 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. --- Kernel/Memory/MemoryManager.cpp | 2 ++ 1 file changed, 2 insertions(+) (limited to 'Kernel/Memory') 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) { -- cgit v1.2.3