diff --git a/src/Ryujinx.Cpu/AddressSpace.cs b/src/Ryujinx.Cpu/AddressSpace.cs index beea14be..6664ed13 100644 --- a/src/Ryujinx.Cpu/AddressSpace.cs +++ b/src/Ryujinx.Cpu/AddressSpace.cs @@ -1,5 +1,3 @@ -using Ryujinx.Common; -using Ryujinx.Common.Collections; using Ryujinx.Memory; using System; @@ -7,175 +5,23 @@ namespace Ryujinx.Cpu { public class AddressSpace : IDisposable { - private const int DefaultBlockAlignment = 1 << 20; - - private enum MappingType : byte - { - None, - Private, - Shared, - } - - private class Mapping : IntrusiveRedBlackTreeNode, IComparable - { - public ulong Address { get; private set; } - public ulong Size { get; private set; } - public ulong EndAddress => Address + Size; - public MappingType Type { get; private set; } - - public Mapping(ulong address, ulong size, MappingType type) - { - Address = address; - Size = size; - Type = type; - } - - public Mapping Split(ulong splitAddress) - { - ulong leftSize = splitAddress - Address; - ulong rightSize = EndAddress - splitAddress; - - Mapping left = new(Address, leftSize, Type); - - Address = splitAddress; - Size = rightSize; - - return left; - } - - public void UpdateState(MappingType newType) - { - Type = newType; - } - - public void Extend(ulong sizeDelta) - { - Size += sizeDelta; - } - - public int CompareTo(Mapping other) - { - if (Address < other.Address) - { - return -1; - } - else if (Address <= other.EndAddress - 1UL) - { - return 0; - } - else - { - return 1; - } - } - } - - private class PrivateMapping : IntrusiveRedBlackTreeNode, IComparable - { - public ulong Address { get; private set; } - public ulong Size { get; private set; } - public ulong EndAddress => Address + Size; - public PrivateMemoryAllocation PrivateAllocation { get; private set; } - - public PrivateMapping(ulong address, ulong size, PrivateMemoryAllocation privateAllocation) - { - Address = address; - Size = size; - PrivateAllocation = privateAllocation; - } - - public PrivateMapping Split(ulong splitAddress) - { - ulong leftSize = splitAddress - Address; - ulong rightSize = EndAddress - splitAddress; - - (var leftAllocation, PrivateAllocation) = PrivateAllocation.Split(leftSize); - - PrivateMapping left = new(Address, leftSize, leftAllocation); - - Address = splitAddress; - Size = rightSize; - - return left; - } - - public void Map(MemoryBlock baseBlock, MemoryBlock mirrorBlock, PrivateMemoryAllocation newAllocation) - { - baseBlock.MapView(newAllocation.Memory, newAllocation.Offset, Address, Size); - mirrorBlock.MapView(newAllocation.Memory, newAllocation.Offset, Address, Size); - PrivateAllocation = newAllocation; - } - - public void Unmap(MemoryBlock baseBlock, MemoryBlock mirrorBlock) - { - if (PrivateAllocation.IsValid) - { - baseBlock.UnmapView(PrivateAllocation.Memory, Address, Size); - mirrorBlock.UnmapView(PrivateAllocation.Memory, Address, Size); - PrivateAllocation.Dispose(); - } - - PrivateAllocation = default; - } - - public void Extend(ulong sizeDelta) - { - Size += sizeDelta; - } - - public int CompareTo(PrivateMapping other) - { - if (Address < other.Address) - { - return -1; - } - else if (Address <= other.EndAddress - 1UL) - { - return 0; - } - else - { - return 1; - } - } - } - private readonly MemoryBlock _backingMemory; - private readonly PrivateMemoryAllocator _privateMemoryAllocator; - private readonly IntrusiveRedBlackTree _mappingTree; - private readonly IntrusiveRedBlackTree _privateTree; - - private readonly object _treeLock; - - private readonly bool _supports4KBPages; public MemoryBlock Base { get; } public MemoryBlock Mirror { get; } public ulong AddressSpaceSize { get; } - public AddressSpace(MemoryBlock backingMemory, MemoryBlock baseMemory, MemoryBlock mirrorMemory, ulong addressSpaceSize, bool supports4KBPages) + public AddressSpace(MemoryBlock backingMemory, MemoryBlock baseMemory, MemoryBlock mirrorMemory, ulong addressSpaceSize) { - if (!supports4KBPages) - { - _privateMemoryAllocator = new PrivateMemoryAllocator(DefaultBlockAlignment, MemoryAllocationFlags.Mirrorable | MemoryAllocationFlags.NoMap); - _mappingTree = new IntrusiveRedBlackTree(); - _privateTree = new IntrusiveRedBlackTree(); - _treeLock = new object(); - - _mappingTree.Add(new Mapping(0UL, addressSpaceSize, MappingType.None)); - _privateTree.Add(new PrivateMapping(0UL, addressSpaceSize, default)); - } - _backingMemory = backingMemory; - _supports4KBPages = supports4KBPages; Base = baseMemory; Mirror = mirrorMemory; AddressSpaceSize = addressSpaceSize; } - public static bool TryCreate(MemoryBlock backingMemory, ulong asSize, bool supports4KBPages, out AddressSpace addressSpace) + public static bool TryCreate(MemoryBlock backingMemory, ulong asSize, out AddressSpace addressSpace) { addressSpace = null; @@ -193,7 +39,7 @@ namespace Ryujinx.Cpu { baseMemory = new MemoryBlock(addressSpaceSize, AsFlags); mirrorMemory = new MemoryBlock(addressSpaceSize, AsFlags); - addressSpace = new AddressSpace(backingMemory, baseMemory, mirrorMemory, addressSpaceSize, supports4KBPages); + addressSpace = new AddressSpace(backingMemory, baseMemory, mirrorMemory, addressSpaceSize); break; } @@ -209,289 +55,20 @@ namespace Ryujinx.Cpu public void Map(ulong va, ulong pa, ulong size, MemoryMapFlags flags) { - if (_supports4KBPages) - { - Base.MapView(_backingMemory, pa, va, size); - Mirror.MapView(_backingMemory, pa, va, size); - - return; - } - - lock (_treeLock) - { - ulong alignment = MemoryBlock.GetPageSize(); - bool isAligned = ((va | pa | size) & (alignment - 1)) == 0; - - if (flags.HasFlag(MemoryMapFlags.Private) && !isAligned) - { - Update(va, pa, size, MappingType.Private); - } - else - { - // The update method assumes that shared mappings are already aligned. - - if (!flags.HasFlag(MemoryMapFlags.Private)) - { - if ((va & (alignment - 1)) != (pa & (alignment - 1))) - { - throw new InvalidMemoryRegionException($"Virtual address 0x{va:X} and physical address 0x{pa:X} are misaligned and can't be aligned."); - } - - ulong endAddress = va + size; - va = BitUtils.AlignDown(va, alignment); - pa = BitUtils.AlignDown(pa, alignment); - size = BitUtils.AlignUp(endAddress, alignment) - va; - } - - Update(va, pa, size, MappingType.Shared); - } - } + Base.MapView(_backingMemory, pa, va, size); + Mirror.MapView(_backingMemory, pa, va, size); } public void Unmap(ulong va, ulong size) { - if (_supports4KBPages) - { - Base.UnmapView(_backingMemory, va, size); - Mirror.UnmapView(_backingMemory, va, size); - - return; - } - - lock (_treeLock) - { - Update(va, 0UL, size, MappingType.None); - } - } - - private void Update(ulong va, ulong pa, ulong size, MappingType type) - { - Mapping map = _mappingTree.GetNode(new Mapping(va, 1UL, MappingType.None)); - - Update(map, va, pa, size, type); - } - - private Mapping Update(Mapping map, ulong va, ulong pa, ulong size, MappingType type) - { - ulong endAddress = va + size; - - for (; map != null; map = map.Successor) - { - if (map.Address < va) - { - _mappingTree.Add(map.Split(va)); - } - - if (map.EndAddress > endAddress) - { - Mapping newMap = map.Split(endAddress); - _mappingTree.Add(newMap); - map = newMap; - } - - switch (type) - { - case MappingType.None: - if (map.Type == MappingType.Shared) - { - ulong startOffset = map.Address - va; - ulong mapVa = va + startOffset; - ulong mapSize = Math.Min(size - startOffset, map.Size); - ulong mapEndAddress = mapVa + mapSize; - ulong alignment = MemoryBlock.GetPageSize(); - - mapVa = BitUtils.AlignDown(mapVa, alignment); - mapEndAddress = BitUtils.AlignUp(mapEndAddress, alignment); - - mapSize = mapEndAddress - mapVa; - - Base.UnmapView(_backingMemory, mapVa, mapSize); - Mirror.UnmapView(_backingMemory, mapVa, mapSize); - } - else - { - UnmapPrivate(va, size); - } - break; - case MappingType.Private: - if (map.Type == MappingType.Shared) - { - throw new InvalidMemoryRegionException($"Private mapping request at 0x{va:X} with size 0x{size:X} overlaps shared mapping at 0x{map.Address:X} with size 0x{map.Size:X}."); - } - else - { - MapPrivate(va, size); - } - break; - case MappingType.Shared: - if (map.Type != MappingType.None) - { - throw new InvalidMemoryRegionException($"Shared mapping request at 0x{va:X} with size 0x{size:X} overlaps mapping at 0x{map.Address:X} with size 0x{map.Size:X}."); - } - else - { - ulong startOffset = map.Address - va; - ulong mapPa = pa + startOffset; - ulong mapVa = va + startOffset; - ulong mapSize = Math.Min(size - startOffset, map.Size); - - Base.MapView(_backingMemory, mapPa, mapVa, mapSize); - Mirror.MapView(_backingMemory, mapPa, mapVa, mapSize); - } - break; - } - - map.UpdateState(type); - map = TryCoalesce(map); - - if (map.EndAddress >= endAddress) - { - break; - } - } - - return map; - } - - private Mapping TryCoalesce(Mapping map) - { - Mapping previousMap = map.Predecessor; - Mapping nextMap = map.Successor; - - if (previousMap != null && CanCoalesce(previousMap, map)) - { - previousMap.Extend(map.Size); - _mappingTree.Remove(map); - map = previousMap; - } - - if (nextMap != null && CanCoalesce(map, nextMap)) - { - map.Extend(nextMap.Size); - _mappingTree.Remove(nextMap); - } - - return map; - } - - private static bool CanCoalesce(Mapping left, Mapping right) - { - return left.Type == right.Type; - } - - private void MapPrivate(ulong va, ulong size) - { - ulong endAddress = va + size; - - ulong alignment = MemoryBlock.GetPageSize(); - - // Expand the range outwards based on page size to ensure that at least the requested region is mapped. - ulong vaAligned = BitUtils.AlignDown(va, alignment); - ulong endAddressAligned = BitUtils.AlignUp(endAddress, alignment); - - PrivateMapping map = _privateTree.GetNode(new PrivateMapping(va, 1UL, default)); - - for (; map != null; map = map.Successor) - { - if (!map.PrivateAllocation.IsValid) - { - if (map.Address < vaAligned) - { - _privateTree.Add(map.Split(vaAligned)); - } - - if (map.EndAddress > endAddressAligned) - { - PrivateMapping newMap = map.Split(endAddressAligned); - _privateTree.Add(newMap); - map = newMap; - } - - map.Map(Base, Mirror, _privateMemoryAllocator.Allocate(map.Size, MemoryBlock.GetPageSize())); - } - - if (map.EndAddress >= endAddressAligned) - { - break; - } - } - } - - private void UnmapPrivate(ulong va, ulong size) - { - ulong endAddress = va + size; - - ulong alignment = MemoryBlock.GetPageSize(); - - // Shrink the range inwards based on page size to ensure we won't unmap memory that might be still in use. - ulong vaAligned = BitUtils.AlignUp(va, alignment); - ulong endAddressAligned = BitUtils.AlignDown(endAddress, alignment); - - if (endAddressAligned <= vaAligned) - { - return; - } - - PrivateMapping map = _privateTree.GetNode(new PrivateMapping(va, 1UL, default)); - - for (; map != null; map = map.Successor) - { - if (map.PrivateAllocation.IsValid) - { - if (map.Address < vaAligned) - { - _privateTree.Add(map.Split(vaAligned)); - } - - if (map.EndAddress > endAddressAligned) - { - PrivateMapping newMap = map.Split(endAddressAligned); - _privateTree.Add(newMap); - map = newMap; - } - - map.Unmap(Base, Mirror); - map = TryCoalesce(map); - } - - if (map.EndAddress >= endAddressAligned) - { - break; - } - } - } - - private PrivateMapping TryCoalesce(PrivateMapping map) - { - PrivateMapping previousMap = map.Predecessor; - PrivateMapping nextMap = map.Successor; - - if (previousMap != null && CanCoalesce(previousMap, map)) - { - previousMap.Extend(map.Size); - _privateTree.Remove(map); - map = previousMap; - } - - if (nextMap != null && CanCoalesce(map, nextMap)) - { - map.Extend(nextMap.Size); - _privateTree.Remove(nextMap); - } - - return map; - } - - private static bool CanCoalesce(PrivateMapping left, PrivateMapping right) - { - return !left.PrivateAllocation.IsValid && !right.PrivateAllocation.IsValid; + Base.UnmapView(_backingMemory, va, size); + Mirror.UnmapView(_backingMemory, va, size); } public void Dispose() { GC.SuppressFinalize(this); - _privateMemoryAllocator?.Dispose(); Base.Dispose(); Mirror.Dispose(); } diff --git a/src/Ryujinx.Cpu/AppleHv/HvMemoryManager.cs b/src/Ryujinx.Cpu/AppleHv/HvMemoryManager.cs index 0c2e5f33..abdddb31 100644 --- a/src/Ryujinx.Cpu/AppleHv/HvMemoryManager.cs +++ b/src/Ryujinx.Cpu/AppleHv/HvMemoryManager.cs @@ -28,7 +28,7 @@ namespace Ryujinx.Cpu.AppleHv private readonly ManagedPageFlags _pages; - public bool Supports4KBPages => true; + public bool UsesPrivateAllocations => false; public int AddressSpaceBits { get; } diff --git a/src/Ryujinx.Cpu/Jit/MemoryManager.cs b/src/Ryujinx.Cpu/Jit/MemoryManager.cs index dfa5b935..6f594ec2 100644 --- a/src/Ryujinx.Cpu/Jit/MemoryManager.cs +++ b/src/Ryujinx.Cpu/Jit/MemoryManager.cs @@ -25,7 +25,7 @@ namespace Ryujinx.Cpu.Jit private readonly InvalidAccessHandler _invalidAccessHandler; /// - public bool Supports4KBPages => true; + public bool UsesPrivateAllocations => false; /// /// Address space width in bits. diff --git a/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs b/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs index c60ab6b2..4639ab91 100644 --- a/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs +++ b/src/Ryujinx.Cpu/Jit/MemoryManagerHostMapped.cs @@ -27,7 +27,7 @@ namespace Ryujinx.Cpu.Jit private readonly ManagedPageFlags _pages; /// - public bool Supports4KBPages => MemoryBlock.GetPageSize() == PageSize; + public bool UsesPrivateAllocations => false; public int AddressSpaceBits { get; } diff --git a/src/Ryujinx.Cpu/Jit/MemoryManagerHostTracked.cs b/src/Ryujinx.Cpu/Jit/MemoryManagerHostTracked.cs index b2964cd2..6dffcd29 100644 --- a/src/Ryujinx.Cpu/Jit/MemoryManagerHostTracked.cs +++ b/src/Ryujinx.Cpu/Jit/MemoryManagerHostTracked.cs @@ -33,7 +33,7 @@ namespace Ryujinx.Cpu.Jit protected override ulong AddressSpaceSize { get; } /// - public bool Supports4KBPages => false; + public bool UsesPrivateAllocations => true; public IntPtr PageTablePointer => _nativePageTable.PageTablePointer; diff --git a/src/Ryujinx.HLE/HOS/ArmProcessContextFactory.cs b/src/Ryujinx.HLE/HOS/ArmProcessContextFactory.cs index e8c43326..6646826c 100644 --- a/src/Ryujinx.HLE/HOS/ArmProcessContextFactory.cs +++ b/src/Ryujinx.HLE/HOS/ArmProcessContextFactory.cs @@ -75,7 +75,7 @@ namespace Ryujinx.HLE.HOS // We want to use host tracked mode if the host page size is > 4KB. if ((mode == MemoryManagerMode.HostMapped || mode == MemoryManagerMode.HostMappedUnsafe) && MemoryBlock.GetPageSize() <= 0x1000) { - if (!AddressSpace.TryCreate(context.Memory, addressSpaceSize, MemoryBlock.GetPageSize() == MemoryManagerHostMapped.PageSize, out addressSpace)) + if (!AddressSpace.TryCreate(context.Memory, addressSpaceSize, out addressSpace)) { Logger.Warning?.Print(LogClass.Cpu, "Address space creation failed, falling back to software page table"); diff --git a/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTable.cs b/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTable.cs index d7b601d1..d262c159 100644 --- a/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTable.cs +++ b/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTable.cs @@ -11,7 +11,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory { private readonly IVirtualMemoryManager _cpuMemory; - protected override bool Supports4KBPages => _cpuMemory.Supports4KBPages; + protected override bool UsesPrivateAllocations => _cpuMemory.UsesPrivateAllocations; public KPageTable(KernelContext context, IVirtualMemoryManager cpuMemory, ulong reservedAddressSpaceSize) : base(context, reservedAddressSpaceSize) { diff --git a/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTableBase.cs b/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTableBase.cs index 6470742d..ae99a434 100644 --- a/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTableBase.cs +++ b/src/Ryujinx.HLE/HOS/Kernel/Memory/KPageTableBase.cs @@ -32,7 +32,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory private const int MaxBlocksNeededForInsertion = 2; protected readonly KernelContext Context; - protected virtual bool Supports4KBPages => true; + protected virtual bool UsesPrivateAllocations => false; public ulong AddrSpaceStart { get; private set; } public ulong AddrSpaceEnd { get; private set; } @@ -1947,17 +1947,17 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory Result result; - if (srcPageTable.Supports4KBPages) + if (srcPageTable.UsesPrivateAllocations) + { + result = MapForeign(srcPageTable.GetHostRegions(addressRounded, alignedSize), currentVa, alignedSize); + } + else { KPageList pageList = new(); srcPageTable.GetPhysicalRegions(addressRounded, alignedSize, pageList); result = MapPages(currentVa, pageList, permission, MemoryMapFlags.None); } - else - { - result = MapForeign(srcPageTable.GetHostRegions(addressRounded, alignedSize), currentVa, alignedSize); - } if (result != Result.Success) { diff --git a/src/Ryujinx.HLE/HOS/Kernel/Memory/KSharedMemory.cs b/src/Ryujinx.HLE/HOS/Kernel/Memory/KSharedMemory.cs index e302ee44..e593a7e1 100644 --- a/src/Ryujinx.HLE/HOS/Kernel/Memory/KSharedMemory.cs +++ b/src/Ryujinx.HLE/HOS/Kernel/Memory/KSharedMemory.cs @@ -2,7 +2,6 @@ using Ryujinx.Common; using Ryujinx.HLE.HOS.Kernel.Common; using Ryujinx.HLE.HOS.Kernel.Process; using Ryujinx.Horizon.Common; -using Ryujinx.Memory; namespace Ryujinx.HLE.HOS.Kernel.Memory { @@ -49,17 +48,7 @@ namespace Ryujinx.HLE.HOS.Kernel.Memory return KernelResult.InvalidPermission; } - // On platforms with page size > 4 KB, this can fail due to the address not being page aligned, - // we can return an error to force the application to retry with a different address. - - try - { - return memoryManager.MapPages(address, _pageList, MemoryState.SharedMemory, permission); - } - catch (InvalidMemoryRegionException) - { - return KernelResult.InvalidMemState; - } + return memoryManager.MapPages(address, _pageList, MemoryState.SharedMemory, permission); } public Result UnmapFromProcess(KPageTableBase memoryManager, ulong address, ulong size, KProcess process) diff --git a/src/Ryujinx.Memory/AddressSpaceManager.cs b/src/Ryujinx.Memory/AddressSpaceManager.cs index f089c857..807c5c0f 100644 --- a/src/Ryujinx.Memory/AddressSpaceManager.cs +++ b/src/Ryujinx.Memory/AddressSpaceManager.cs @@ -13,7 +13,7 @@ namespace Ryujinx.Memory public sealed class AddressSpaceManager : VirtualMemoryManagerBase, IVirtualMemoryManager { /// - public bool Supports4KBPages => true; + public bool UsesPrivateAllocations => false; /// /// Address space width in bits. diff --git a/src/Ryujinx.Memory/IVirtualMemoryManager.cs b/src/Ryujinx.Memory/IVirtualMemoryManager.cs index 96d3e857..102cedc9 100644 --- a/src/Ryujinx.Memory/IVirtualMemoryManager.cs +++ b/src/Ryujinx.Memory/IVirtualMemoryManager.cs @@ -8,10 +8,10 @@ namespace Ryujinx.Memory public interface IVirtualMemoryManager { /// - /// Indicates whenever the memory manager supports aliasing pages at 4KB granularity. + /// Indicates whether the memory manager creates private allocations when the flag is set on map. /// - /// True if 4KB pages are supported by the memory manager, false otherwise - bool Supports4KBPages { get; } + /// True if private mappings might be used, false otherwise + bool UsesPrivateAllocations { get; } /// /// Maps a virtual memory range into a physical memory range. diff --git a/src/Ryujinx.Tests.Memory/MockVirtualMemoryManager.cs b/src/Ryujinx.Tests.Memory/MockVirtualMemoryManager.cs index 15e7d9b8..3fe44db2 100644 --- a/src/Ryujinx.Tests.Memory/MockVirtualMemoryManager.cs +++ b/src/Ryujinx.Tests.Memory/MockVirtualMemoryManager.cs @@ -8,7 +8,7 @@ namespace Ryujinx.Tests.Memory { public class MockVirtualMemoryManager : IVirtualMemoryManager { - public bool Supports4KBPages => true; + public bool UsesPrivateAllocations => false; public bool NoMappings = false;