mirror of
https://github.com/Ryubing/Ryujinx.git
synced 2025-11-14 05:22:42 -05:00
Implement host tracked memory manager mode (#6356)
* Add host tracked memory manager mode * Skipping flush is no longer needed * Formatting + revert unrelated change * LightningJit: Ensure that dest register is saved for load ops that do partial updates * avoid allocations when doing address space lookup Add missing improvement * IsRmwMemory -> IsPartialRegisterUpdateMemory * Ensure we iterate all private allocations in range * PR feedback and potential fixes * Simplified bridges a lot * Skip calling SignalMappingChanged if Guest is true * Late map bridge too * Force address masking for prefetch instructions * Reprotection for bridges * Move partition list validation to separate debug method * Move host tracked related classes to HostTracked folder * New HostTracked namespace * Move host tracked modes to the end of enum to avoid PPTC invalidation --------- Co-authored-by: riperiperi <rhy3756547@hotmail.com>
This commit is contained in:
gdkchan
627
src/Ryujinx.Cpu/Jit/MemoryManagerHostTracked.cs
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627
src/Ryujinx.Cpu/Jit/MemoryManagerHostTracked.cs
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@@ -0,0 +1,627 @@
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using ARMeilleure.Memory;
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using Ryujinx.Cpu.Jit.HostTracked;
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using Ryujinx.Cpu.Signal;
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using Ryujinx.Memory;
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using Ryujinx.Memory.Range;
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using Ryujinx.Memory.Tracking;
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using System;
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using System.Collections.Generic;
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using System.Linq;
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using System.Runtime.CompilerServices;
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using System.Runtime.InteropServices;
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namespace Ryujinx.Cpu.Jit
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{
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/// <summary>
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/// Represents a CPU memory manager which maps guest virtual memory directly onto a host virtual region.
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/// </summary>
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public sealed class MemoryManagerHostTracked : VirtualMemoryManagerRefCountedBase<ulong, ulong>, IWritableBlock, IMemoryManager, IVirtualMemoryManagerTracked
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{
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private readonly InvalidAccessHandler _invalidAccessHandler;
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private readonly bool _unsafeMode;
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private readonly MemoryBlock _backingMemory;
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public int AddressSpaceBits { get; }
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public MemoryTracking Tracking { get; }
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private readonly NativePageTable _nativePageTable;
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private readonly AddressSpacePartitioned _addressSpace;
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private readonly ManagedPageFlags _pages;
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protected override ulong AddressSpaceSize { get; }
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/// <inheritdoc/>
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public bool Supports4KBPages => false;
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public IntPtr PageTablePointer => _nativePageTable.PageTablePointer;
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public MemoryManagerType Type => _unsafeMode ? MemoryManagerType.HostTrackedUnsafe : MemoryManagerType.HostTracked;
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public event Action<ulong, ulong> UnmapEvent;
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/// <summary>
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/// Creates a new instance of the host tracked memory manager.
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/// </summary>
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/// <param name="backingMemory">Physical backing memory where virtual memory will be mapped to</param>
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/// <param name="addressSpaceSize">Size of the address space</param>
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/// <param name="unsafeMode">True if unmanaged access should not be masked (unsafe), false otherwise.</param>
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/// <param name="invalidAccessHandler">Optional function to handle invalid memory accesses</param>
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public MemoryManagerHostTracked(MemoryBlock backingMemory, ulong addressSpaceSize, bool unsafeMode, InvalidAccessHandler invalidAccessHandler)
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{
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bool useProtectionMirrors = MemoryBlock.GetPageSize() > PageSize;
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Tracking = new MemoryTracking(this, PageSize, invalidAccessHandler, useProtectionMirrors);
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_backingMemory = backingMemory;
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_invalidAccessHandler = invalidAccessHandler;
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_unsafeMode = unsafeMode;
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AddressSpaceSize = addressSpaceSize;
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ulong asSize = PageSize;
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int asBits = PageBits;
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while (asSize < AddressSpaceSize)
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{
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asSize <<= 1;
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asBits++;
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}
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AddressSpaceBits = asBits;
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if (useProtectionMirrors && !NativeSignalHandler.SupportsFaultAddressPatching())
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{
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// Currently we require being able to change the fault address to something else
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// in order to "emulate" 4KB granularity protection on systems with larger page size.
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throw new PlatformNotSupportedException();
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}
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_pages = new ManagedPageFlags(asBits);
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_nativePageTable = new(asSize);
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_addressSpace = new(Tracking, backingMemory, _nativePageTable, useProtectionMirrors);
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}
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/// <inheritdoc/>
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public void Map(ulong va, ulong pa, ulong size, MemoryMapFlags flags)
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{
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AssertValidAddressAndSize(va, size);
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if (flags.HasFlag(MemoryMapFlags.Private))
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{
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_addressSpace.Map(va, pa, size);
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}
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_pages.AddMapping(va, size);
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_nativePageTable.Map(va, pa, size, _addressSpace, _backingMemory, flags.HasFlag(MemoryMapFlags.Private));
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Tracking.Map(va, size);
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}
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/// <inheritdoc/>
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public void MapForeign(ulong va, nuint hostPointer, ulong size)
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{
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throw new NotSupportedException();
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}
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/// <inheritdoc/>
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public void Unmap(ulong va, ulong size)
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{
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AssertValidAddressAndSize(va, size);
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_addressSpace.Unmap(va, size);
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UnmapEvent?.Invoke(va, size);
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Tracking.Unmap(va, size);
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_pages.RemoveMapping(va, size);
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_nativePageTable.Unmap(va, size);
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}
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public T Read<T>(ulong va) where T : unmanaged
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{
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return MemoryMarshal.Cast<byte, T>(GetSpan(va, Unsafe.SizeOf<T>()))[0];
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}
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public T ReadTracked<T>(ulong va) where T : unmanaged
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{
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try
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{
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SignalMemoryTracking(va, (ulong)Unsafe.SizeOf<T>(), false);
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return Read<T>(va);
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}
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catch (InvalidMemoryRegionException)
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{
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if (_invalidAccessHandler == null || !_invalidAccessHandler(va))
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{
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throw;
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}
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return default;
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}
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}
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public override void Read(ulong va, Span<byte> data)
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{
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ReadImpl(va, data);
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}
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public void Write<T>(ulong va, T value) where T : unmanaged
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{
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Write(va, MemoryMarshal.Cast<T, byte>(MemoryMarshal.CreateSpan(ref value, 1)));
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}
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public void Write(ulong va, ReadOnlySpan<byte> data)
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{
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if (data.Length == 0)
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{
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return;
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}
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SignalMemoryTracking(va, (ulong)data.Length, true);
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WriteImpl(va, data);
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}
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public void WriteUntracked(ulong va, ReadOnlySpan<byte> data)
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{
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if (data.Length == 0)
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{
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return;
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}
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WriteImpl(va, data);
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}
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public bool WriteWithRedundancyCheck(ulong va, ReadOnlySpan<byte> data)
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{
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if (data.Length == 0)
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{
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return false;
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}
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SignalMemoryTracking(va, (ulong)data.Length, false);
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if (TryGetVirtualContiguous(va, data.Length, out MemoryBlock memoryBlock, out ulong offset))
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{
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var target = memoryBlock.GetSpan(offset, data.Length);
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bool changed = !data.SequenceEqual(target);
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if (changed)
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{
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data.CopyTo(target);
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}
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return changed;
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}
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else
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{
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WriteImpl(va, data);
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return true;
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}
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}
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private void WriteImpl(ulong va, ReadOnlySpan<byte> data)
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{
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try
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{
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AssertValidAddressAndSize(va, (ulong)data.Length);
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ulong endVa = va + (ulong)data.Length;
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int offset = 0;
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while (va < endVa)
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{
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(MemoryBlock memory, ulong rangeOffset, ulong copySize) = GetMemoryOffsetAndSize(va, (ulong)(data.Length - offset));
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data.Slice(offset, (int)copySize).CopyTo(memory.GetSpan(rangeOffset, (int)copySize));
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va += copySize;
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offset += (int)copySize;
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}
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}
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catch (InvalidMemoryRegionException)
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{
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if (_invalidAccessHandler == null || !_invalidAccessHandler(va))
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{
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throw;
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}
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}
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}
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public ReadOnlySpan<byte> GetSpan(ulong va, int size, bool tracked = false)
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{
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if (size == 0)
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{
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return ReadOnlySpan<byte>.Empty;
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}
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if (tracked)
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{
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SignalMemoryTracking(va, (ulong)size, false);
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}
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if (TryGetVirtualContiguous(va, size, out MemoryBlock memoryBlock, out ulong offset))
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{
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return memoryBlock.GetSpan(offset, size);
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}
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else
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{
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Span<byte> data = new byte[size];
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ReadImpl(va, data);
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return data;
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}
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}
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public WritableRegion GetWritableRegion(ulong va, int size, bool tracked = false)
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{
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if (size == 0)
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{
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return new WritableRegion(null, va, Memory<byte>.Empty);
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}
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if (tracked)
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{
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SignalMemoryTracking(va, (ulong)size, true);
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}
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if (TryGetVirtualContiguous(va, size, out MemoryBlock memoryBlock, out ulong offset))
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{
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return new WritableRegion(null, va, memoryBlock.GetMemory(offset, size));
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}
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else
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{
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Memory<byte> memory = new byte[size];
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ReadImpl(va, memory.Span);
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return new WritableRegion(this, va, memory);
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}
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}
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public ref T GetRef<T>(ulong va) where T : unmanaged
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{
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if (!TryGetVirtualContiguous(va, Unsafe.SizeOf<T>(), out MemoryBlock memory, out ulong offset))
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{
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ThrowMemoryNotContiguous();
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}
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SignalMemoryTracking(va, (ulong)Unsafe.SizeOf<T>(), true);
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return ref memory.GetRef<T>(offset);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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public bool IsMapped(ulong va)
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{
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return ValidateAddress(va) && _pages.IsMapped(va);
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}
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public bool IsRangeMapped(ulong va, ulong size)
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{
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AssertValidAddressAndSize(va, size);
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return _pages.IsRangeMapped(va, size);
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}
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private static void ThrowMemoryNotContiguous() => throw new MemoryNotContiguousException();
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private bool TryGetVirtualContiguous(ulong va, int size, out MemoryBlock memory, out ulong offset)
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{
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if (_addressSpace.HasAnyPrivateAllocation(va, (ulong)size, out PrivateRange range))
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{
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// If we have a private allocation overlapping the range,
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// then the access is only considered contiguous if it covers the entire range.
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if (range.Memory != null)
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{
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memory = range.Memory;
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offset = range.Offset;
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return true;
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}
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memory = null;
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offset = 0;
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return false;
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}
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memory = _backingMemory;
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offset = GetPhysicalAddressInternal(va);
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return IsPhysicalContiguous(va, size);
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private bool IsPhysicalContiguous(ulong va, int size)
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{
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if (!ValidateAddress(va) || !ValidateAddressAndSize(va, (ulong)size))
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{
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return false;
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}
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int pages = GetPagesCount(va, (uint)size, out va);
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for (int page = 0; page < pages - 1; page++)
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{
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if (!ValidateAddress(va + PageSize))
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{
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return false;
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}
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if (GetPhysicalAddressInternal(va) + PageSize != GetPhysicalAddressInternal(va + PageSize))
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{
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return false;
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}
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va += PageSize;
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}
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return true;
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}
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[MethodImpl(MethodImplOptions.AggressiveInlining)]
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private ulong GetContiguousSize(ulong va, ulong size)
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{
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ulong contiguousSize = PageSize - (va & PageMask);
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if (!ValidateAddress(va) || !ValidateAddressAndSize(va, size))
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{
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return contiguousSize;
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}
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int pages = GetPagesCount(va, size, out va);
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for (int page = 0; page < pages - 1; page++)
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{
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if (!ValidateAddress(va + PageSize))
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{
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return contiguousSize;
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}
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if (GetPhysicalAddressInternal(va) + PageSize != GetPhysicalAddressInternal(va + PageSize))
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{
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return contiguousSize;
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}
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va += PageSize;
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contiguousSize += PageSize;
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}
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return Math.Min(contiguousSize, size);
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}
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private (MemoryBlock, ulong, ulong) GetMemoryOffsetAndSize(ulong va, ulong size)
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{
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PrivateRange privateRange = _addressSpace.GetFirstPrivateAllocation(va, size, out ulong nextVa);
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if (privateRange.Memory != null)
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{
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return (privateRange.Memory, privateRange.Offset, privateRange.Size);
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}
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ulong physSize = GetContiguousSize(va, Math.Min(size, nextVa - va));
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return (_backingMemory, GetPhysicalAddressChecked(va), physSize);
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}
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public IEnumerable<HostMemoryRange> GetHostRegions(ulong va, ulong size)
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{
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if (!ValidateAddressAndSize(va, size))
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{
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return null;
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}
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var regions = new List<HostMemoryRange>();
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ulong endVa = va + size;
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try
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{
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while (va < endVa)
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{
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(MemoryBlock memory, ulong rangeOffset, ulong rangeSize) = GetMemoryOffsetAndSize(va, endVa - va);
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regions.Add(new((UIntPtr)memory.GetPointer(rangeOffset, rangeSize), rangeSize));
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va += rangeSize;
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}
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}
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catch (InvalidMemoryRegionException)
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{
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return null;
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}
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return regions;
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}
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public IEnumerable<MemoryRange> GetPhysicalRegions(ulong va, ulong size)
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{
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if (size == 0)
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{
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return Enumerable.Empty<MemoryRange>();
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}
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return GetPhysicalRegionsImpl(va, size);
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}
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private List<MemoryRange> GetPhysicalRegionsImpl(ulong va, ulong size)
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||||
{
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||||
if (!ValidateAddress(va) || !ValidateAddressAndSize(va, size))
|
||||
{
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||||
return null;
|
||||
}
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||||
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||||
int pages = GetPagesCount(va, (uint)size, out va);
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||||
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var regions = new List<MemoryRange>();
|
||||
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||||
ulong regionStart = GetPhysicalAddressInternal(va);
|
||||
ulong regionSize = PageSize;
|
||||
|
||||
for (int page = 0; page < pages - 1; page++)
|
||||
{
|
||||
if (!ValidateAddress(va + PageSize))
|
||||
{
|
||||
return null;
|
||||
}
|
||||
|
||||
ulong newPa = GetPhysicalAddressInternal(va + PageSize);
|
||||
|
||||
if (GetPhysicalAddressInternal(va) + PageSize != newPa)
|
||||
{
|
||||
regions.Add(new MemoryRange(regionStart, regionSize));
|
||||
regionStart = newPa;
|
||||
regionSize = 0;
|
||||
}
|
||||
|
||||
va += PageSize;
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||||
regionSize += PageSize;
|
||||
}
|
||||
|
||||
regions.Add(new MemoryRange(regionStart, regionSize));
|
||||
|
||||
return regions;
|
||||
}
|
||||
|
||||
private void ReadImpl(ulong va, Span<byte> data)
|
||||
{
|
||||
if (data.Length == 0)
|
||||
{
|
||||
return;
|
||||
}
|
||||
|
||||
try
|
||||
{
|
||||
AssertValidAddressAndSize(va, (ulong)data.Length);
|
||||
|
||||
ulong endVa = va + (ulong)data.Length;
|
||||
int offset = 0;
|
||||
|
||||
while (va < endVa)
|
||||
{
|
||||
(MemoryBlock memory, ulong rangeOffset, ulong copySize) = GetMemoryOffsetAndSize(va, (ulong)(data.Length - offset));
|
||||
|
||||
memory.GetSpan(rangeOffset, (int)copySize).CopyTo(data.Slice(offset, (int)copySize));
|
||||
|
||||
va += copySize;
|
||||
offset += (int)copySize;
|
||||
}
|
||||
}
|
||||
catch (InvalidMemoryRegionException)
|
||||
{
|
||||
if (_invalidAccessHandler == null || !_invalidAccessHandler(va))
|
||||
{
|
||||
throw;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
/// <inheritdoc/>
|
||||
/// <remarks>
|
||||
/// This function also validates that the given range is both valid and mapped, and will throw if it is not.
|
||||
/// </remarks>
|
||||
public void SignalMemoryTracking(ulong va, ulong size, bool write, bool precise = false, int? exemptId = null)
|
||||
{
|
||||
AssertValidAddressAndSize(va, size);
|
||||
|
||||
if (precise)
|
||||
{
|
||||
Tracking.VirtualMemoryEvent(va, size, write, precise: true, exemptId);
|
||||
return;
|
||||
}
|
||||
|
||||
// Software table, used for managed memory tracking.
|
||||
|
||||
_pages.SignalMemoryTracking(Tracking, va, size, write, exemptId);
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Computes the number of pages in a virtual address range.
|
||||
/// </summary>
|
||||
/// <param name="va">Virtual address of the range</param>
|
||||
/// <param name="size">Size of the range</param>
|
||||
/// <param name="startVa">The virtual address of the beginning of the first page</param>
|
||||
/// <remarks>This function does not differentiate between allocated and unallocated pages.</remarks>
|
||||
[MethodImpl(MethodImplOptions.AggressiveInlining)]
|
||||
private int GetPagesCount(ulong va, ulong size, out ulong startVa)
|
||||
{
|
||||
// WARNING: Always check if ulong does not overflow during the operations.
|
||||
startVa = va & ~(ulong)PageMask;
|
||||
ulong vaSpan = (va - startVa + size + PageMask) & ~(ulong)PageMask;
|
||||
|
||||
return (int)(vaSpan / PageSize);
|
||||
}
|
||||
|
||||
public RegionHandle BeginTracking(ulong address, ulong size, int id, RegionFlags flags = RegionFlags.None)
|
||||
{
|
||||
return Tracking.BeginTracking(address, size, id, flags);
|
||||
}
|
||||
|
||||
public MultiRegionHandle BeginGranularTracking(ulong address, ulong size, IEnumerable<IRegionHandle> handles, ulong granularity, int id, RegionFlags flags = RegionFlags.None)
|
||||
{
|
||||
return Tracking.BeginGranularTracking(address, size, handles, granularity, id, flags);
|
||||
}
|
||||
|
||||
public SmartMultiRegionHandle BeginSmartGranularTracking(ulong address, ulong size, ulong granularity, int id)
|
||||
{
|
||||
return Tracking.BeginSmartGranularTracking(address, size, granularity, id);
|
||||
}
|
||||
|
||||
private ulong GetPhysicalAddressChecked(ulong va)
|
||||
{
|
||||
if (!IsMapped(va))
|
||||
{
|
||||
ThrowInvalidMemoryRegionException($"Not mapped: va=0x{va:X16}");
|
||||
}
|
||||
|
||||
return GetPhysicalAddressInternal(va);
|
||||
}
|
||||
|
||||
private ulong GetPhysicalAddressInternal(ulong va)
|
||||
{
|
||||
return _nativePageTable.GetPhysicalAddress(va);
|
||||
}
|
||||
|
||||
/// <inheritdoc/>
|
||||
public void Reprotect(ulong va, ulong size, MemoryPermission protection)
|
||||
{
|
||||
// TODO
|
||||
}
|
||||
|
||||
/// <inheritdoc/>
|
||||
public void TrackingReprotect(ulong va, ulong size, MemoryPermission protection, bool guest)
|
||||
{
|
||||
if (guest)
|
||||
{
|
||||
_addressSpace.Reprotect(va, size, protection);
|
||||
}
|
||||
else
|
||||
{
|
||||
_pages.TrackingReprotect(va, size, protection);
|
||||
}
|
||||
}
|
||||
|
||||
/// <summary>
|
||||
/// Disposes of resources used by the memory manager.
|
||||
/// </summary>
|
||||
protected override void Destroy()
|
||||
{
|
||||
_addressSpace.Dispose();
|
||||
_nativePageTable.Dispose();
|
||||
}
|
||||
|
||||
protected override Span<byte> GetPhysicalAddressSpan(ulong pa, int size)
|
||||
=> _backingMemory.GetSpan(pa, size);
|
||||
|
||||
protected override ulong TranslateVirtualAddressForRead(ulong va)
|
||||
=> GetPhysicalAddressInternal(va);
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user