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b2a52f62089e4799336cf0bf32eb307b077d2e72
ladybird/Kernel
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Tom b2a52f6208 Kernel: Implement lazy committed page allocation 
By designating a committed page pool we can guarantee to have physical
pages available for lazy allocation in mappings. However, when forking
we will overcommit. The assumption is that worst-case it's better for
the fork to die due to insufficient physical memory on COW access than
the parent that created the region. If a fork wants to ensure that all
memory is available (trigger a commit) then it can use madvise.

This also means that fork now can gracefully fail if we don't have
enough physical pages available.
2021-01-01 23:43:44 +01:00
..
ACPI
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
API
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
Arch
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
Devices
Everywhere: Fix more typos
2020-12-31 01:47:41 +01:00
FileSystem
Kernel: Memory purging improvements
2021-01-01 23:43:44 +01:00
Heap
Kernel: Memory purging improvements
2021-01-01 23:43:44 +01:00
Interrupts
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
Modules
Kernel: Module symbol declarations for type-checking
2020-08-12 20:40:59 +02:00
Net
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
PCI
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
Storage
Kernel: Allow to boot from a partition with partition UUID
2021-01-01 22:59:48 +01:00
Syscalls
Kernel: Implement lazy committed page allocation
2021-01-01 23:43:44 +01:00
Tasks
Kernel: Fix some issues related to fixes and block conditions
2020-12-12 21:28:12 +01:00
Time
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
TTY
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
VM
Kernel: Implement lazy committed page allocation
2021-01-01 23:43:44 +01:00
.gitignore
…
Assertions.h
Everywhere: Switch from (void) to [[maybe_unused]] (#4473)
2020-12-21 00:09:48 +01:00
CMakeLists.txt
Kernel: Allow to boot from a partition with partition UUID
2021-01-01 22:59:48 +01:00
CMOS.cpp
…
CMOS.h
…
CommandLine.cpp
Meta+Kernel: Make clang-format-10 clean
2020-09-25 21:18:17 +02:00
CommandLine.h
Kernel: Copy command line to a safe place
2020-08-25 09:48:48 +02:00
Console.cpp
Meta+Kernel: Make clang-format-10 clean
2020-09-25 21:18:17 +02:00
Console.h
Kernel: Add a method to determine the desired permissions of a Device
2020-12-27 23:07:44 +01:00
CoreDump.cpp
Kernel: Embed a Metadata notes entry in coredumps
2020-12-30 16:28:27 +01:00
CoreDump.h
Kernel: Embed a Metadata notes entry in coredumps
2020-12-30 16:28:27 +01:00
DoubleBuffer.cpp
Kernel: Move block condition evaluation out of the Scheduler
2020-11-30 13:17:02 +01:00
DoubleBuffer.h
Kernel: Move block condition evaluation out of the Scheduler
2020-11-30 13:17:02 +01:00
Forward.h
Kernel: Generate a coredump file when a process crashes
2020-12-14 23:05:53 +01:00
init.cpp
Kernel: Introduce a new partitioning subsystem
2020-12-27 23:07:44 +01:00
IO.h
…
KBuffer.h
Kernel: Make KBuffer::try_create_with_bytes() actually copy the bytes
2020-12-23 00:40:11 +01:00
KBufferBuilder.cpp
Kernel: Move KBufferBuilder to the fallible KBuffer API
2020-12-18 19:22:26 +01:00
KBufferBuilder.h
Kernel: Move KBufferBuilder to the fallible KBuffer API
2020-12-18 19:22:26 +01:00
kprintf.cpp
Kernel: Stop supporting sprintf
2020-08-22 20:55:10 +02:00
KResult.h
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
kstdio.h
LibC: Enable compiler warnings for printf format strings
2020-12-26 10:05:50 +01:00
KSyms.cpp
Kernel+LibELF: Stop doing ELF symbolication in the kernel
2020-12-25 01:03:46 +01:00
KSyms.h
…
linker.ld
…
Lock.cpp
Kernel: Fix Lock race causing infinite spinning between two threads
2020-12-16 23:38:17 +01:00
Lock.h
Kernel: Fix Lock race causing infinite spinning between two threads
2020-12-16 23:38:17 +01:00
LockMode.h
Kernel: Fix Lock race causing infinite spinning between two threads
2020-12-16 23:38:17 +01:00
mkmap.sh
…
Module.h
…
Multiboot.h
…
PerformanceEventBuffer.cpp
Kernel: Use fallible KBuffer API in PerformanceEventBuffer
2020-12-19 10:23:12 +01:00
PerformanceEventBuffer.h
Everywhere: Re-format with clang-format-11
2020-12-31 21:51:00 +01:00
PhysicalAddress.h
Meta+Kernel: Make clang-format-10 clean
2020-09-25 21:18:17 +02:00
Process.cpp
Kernel: Implement lazy committed page allocation
2021-01-01 23:43:44 +01:00
Process.h
Kernel: Add MAP_NORESERVE support to mmap
2021-01-01 23:43:44 +01:00
ProcessGroup.cpp
Kernel: Move block condition evaluation out of the Scheduler
2020-11-30 13:17:02 +01:00
ProcessGroup.h
Kernel: Move block condition evaluation out of the Scheduler
2020-11-30 13:17:02 +01:00
Profiling.cpp
Kernel+LibELF: Stop doing ELF symbolication in the kernel
2020-12-25 01:03:46 +01:00
Profiling.h
…
Ptrace.cpp
Kernel+LibC: Introduce a "dumpable" flag for processes
2020-12-25 19:35:55 +01:00
Ptrace.h
Meta+Kernel: Make clang-format-10 clean
2020-09-25 21:18:17 +02:00
Random.cpp
Kernel: Fix some issues related to fixes and block conditions
2020-12-12 21:28:12 +01:00
Random.h
Kernel: Tag more methods and types as [[nodiscard]]
2020-12-27 11:09:30 +01:00
RTC.cpp
Kernel: Minor tweak to now() computation
2020-08-26 08:52:07 +02:00
RTC.h
…
Scheduler.cpp
AK: Remove custom %w format string specifier
2020-12-25 17:05:05 +01:00
Scheduler.h
Kernel: Fix some issues related to fixes and block conditions
2020-12-12 21:28:12 +01:00
SharedBuffer.cpp
Kernel: Memory purging improvements
2021-01-01 23:43:44 +01:00
SharedBuffer.h
Kernel: Implement lazy committed page allocation
2021-01-01 23:43:44 +01:00
SpinLock.h
Kernel: Tag more methods and types as [[nodiscard]]
2020-12-27 11:09:30 +01:00
StdLib.cpp
Kernel: Make copy_to/from_user safe and remove unnecessary checks
2020-09-13 21:19:15 +02:00
StdLib.h
Kernel: Add checks for is_trivially_copyable to copy_to/from_user
2020-10-02 15:38:07 +02:00
Syscall.cpp
Kernel: Don't allow modifying IOPL via sys$ptrace() or sys$sigreturn()
2020-12-22 19:38:25 +01:00
Thread.cpp
AK: Remove custom %w format string specifier
2020-12-25 17:05:05 +01:00
Thread.h
Kernel: Fix BlockCondition::unblock return value
2020-12-31 10:52:58 +01:00
ThreadBlockers.cpp
Kernel: Consolidate the various BlockCondition::unblock variants
2020-12-30 13:23:17 +01:00
ThreadTracer.cpp
…
ThreadTracer.h
…
TimerQueue.cpp
Kernel: Improve time keeping and dramatically reduce interrupt load
2020-12-21 18:26:12 +01:00
TimerQueue.h
Kernel: Improve time keeping and dramatically reduce interrupt load
2020-12-21 18:26:12 +01:00
UnixTypes.h
Kernel: Remove MAP_PURGEABLE from mmap
2021-01-01 23:43:44 +01:00
UnveilNode.h
Kernel: Allow 'elevating' unveil permissions if implicitly inherited from '/'
2020-12-26 16:10:04 +01:00
UserOrKernelBuffer.cpp
AK: Add StringBuilder::appendff using the new format.
2020-09-22 15:06:40 +02:00
UserOrKernelBuffer.h
FileSystem: Use OutputMemoryStream instead of BufferStream.
2020-09-15 20:36:45 +02:00
VirtualAddress.cpp
AK+Format: Remove TypeErasedFormatParams& from format function.
2020-12-30 20:33:53 +01:00
VirtualAddress.h
AK+Format: Remove TypeErasedFormatParams& from format function.
2020-12-30 20:33:53 +01:00
WaitQueue.cpp
Everywhere: Fix more typos
2020-12-31 01:47:41 +01:00
WaitQueue.h
Kernel: Fix Lock race causing infinite spinning between two threads
2020-12-16 23:38:17 +01:00