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f7a4c34929361d3df905d49e7ae20d2eb5f90ff3
ladybird/Kernel/Memory
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Andreas Kling f7a4c34929 Kernel: Make kmalloc heap expansion kmalloc-free 
Previously, the heap expansion logic could end up calling kmalloc
recursively, which was quite messy and hard to reason about.

This patch redesigns heap expansion so that it's kmalloc-free:

- We make a single large virtual range allocation at startup
- When expanding, we bump allocate VM from that region
- When expanding, we populate page tables directly ourselves,
  instead of going via MemoryManager.

This makes heap expansion a great deal simpler. However, do note that it
introduces two new flaws that we'll need to deal with eventually:

- The single virtual range allocation is limited to 64 MiB and once
  exhausted, kmalloc() will fail. (Actually, it will PANIC for now..)

- The kmalloc heap can no longer shrink once expanded. Subheaps stay
  in place once constructed.
2021-12-25 22:07:59 +01:00
..
AddressSpace.cpp
Kernel: Cast unused smart-pointer return value to void
2021-12-05 15:31:03 +01:00
AddressSpace.h
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
AllocationStrategy.h
Kernel: Rename Kernel/VM/ to Kernel/Memory/
2021-08-06 14:05:58 +02:00
AnonymousVMObject.cpp
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
AnonymousVMObject.h
Kernel: Mark private members of SharedCommittedCowPages as private
2021-11-14 22:52:35 +01:00
InodeVMObject.cpp
Kernel: Rename ScopedSpinlock => SpinlockLocker
2021-08-22 03:34:10 +02:00
InodeVMObject.h
Kernel: Move Kernel/Memory/ code into Kernel::Memory namespace
2021-08-06 14:05:58 +02:00
MappedROM.h
Kernel: Move Kernel/Memory/ code into Kernel::Memory namespace
2021-08-06 14:05:58 +02:00
MemoryManager.cpp
Kernel: Make MemoryManager::protect_ksyms_after_init UNMAP_AFTER_INIT
2021-12-24 14:28:59 -08:00
MemoryManager.h
Kernel: Make kmalloc heap expansion kmalloc-free
2021-12-25 22:07:59 +01:00
PageDirectory.cpp
Kernel: Move userspace virtual address range base to 0x10000
2021-12-22 00:02:36 -08:00
PageDirectory.h
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
PageFaultResponse.h
…
PhysicalPage.cpp
Kernel: Move Kernel/Memory/ code into Kernel::Memory namespace
2021-08-06 14:05:58 +02:00
PhysicalPage.h
…
PhysicalRegion.cpp
Kernel: Initialize PhysicalRegion::m_large_zones, remove m_small_zones
2021-12-22 13:29:31 -08:00
PhysicalRegion.h
Kernel: Initialize PhysicalRegion::m_large_zones, remove m_small_zones
2021-12-22 13:29:31 -08:00
PhysicalZone.cpp
AK+Everywhere: Replace __builtin bit functions
2021-12-21 22:13:51 +01:00
PhysicalZone.h
Kernel: Resolve clang-tidy readability-implicit-bool-conversion warnings
2021-11-14 22:52:35 +01:00
PrivateInodeVMObject.cpp
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
PrivateInodeVMObject.h
Everywhere: Remove unused AK/Bitmap includes
2021-11-10 14:39:42 +01:00
Region.cpp
Kernel: Move userspace virtual address range base to 0x10000
2021-12-22 00:02:36 -08:00
Region.h
Kernel: Move userspace virtual address range base to 0x10000
2021-12-22 00:02:36 -08:00
RingBuffer.cpp
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
RingBuffer.h
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
ScatterGatherList.cpp
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
ScatterGatherList.h
…
ScopedAddressSpaceSwitcher.cpp
Kernel: Access MemoryManager static functions statically
2021-10-02 18:16:15 +02:00
ScopedAddressSpaceSwitcher.h
Kernel: Rename ProcessPagingScope => ScopedAddressSpaceSwitcher
2021-09-06 18:56:51 +02:00
SharedInodeVMObject.cpp
Kernel: Don't rewrite the whole file on sys$msync
2021-12-01 09:47:46 +01:00
SharedInodeVMObject.h
Kernel: Don't rewrite the whole file on sys$msync
2021-12-01 09:47:46 +01:00
TypedMapping.h
Kernel: Make kernel region allocators return KResultOr<NOP<Region>>
2021-09-06 01:55:27 +02:00
VirtualRange.cpp
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00
VirtualRange.h
AK: Convert AK::Format formatting helpers to returning ErrorOr<void>
2021-11-17 00:21:13 +01:00
VirtualRangeAllocator.cpp
Kernel: Return EEXIST in VirtualRangeAllocator::try_allocate_specific()
2021-12-23 23:08:10 +01:00
VirtualRangeAllocator.h
Kernel: Make VirtualRangeAllocator setup functions propagate errors
2021-11-18 21:11:30 +01:00
VMObject.cpp
Kernel: Rename SpinLock => Spinlock
2021-08-22 03:34:10 +02:00
VMObject.h
Kernel: Replace KResult and KResultOr<T> with Error and ErrorOr<T>
2021-11-08 01:10:53 +01:00