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Separate guest/host tracking + unaligned protection (#6486)

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* WIP: Separate guest/host tracking + unaligned protection

Allow memory manager to define support for single byte guest tracking

* Formatting

* Improve docs

* Properly handle cases where the address space bits are too low

* Address feedback
This commit is contained in:
riperiperi
2024-03-14 22:38:27 +00:00
committed by GitHub
parent ce607db944
commit fdd3263e31
18 changed files with 774 additions and 763 deletions
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68
src/Ryujinx.Memory/Tracking/RegionHandle.cs
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@@ -55,6 +55,8 @@ namespace Ryujinx.Memory.Tracking
private RegionSignal _preAction; // Action to perform before a read or write. This will block the memory access.
private PreciseRegionSignal _preciseAction; // Action to perform on a precise read or write.
private readonly List<VirtualRegion> _regions;
private readonly List<VirtualRegion> _guestRegions;
private readonly List<VirtualRegion> _allRegions;
private readonly MemoryTracking _tracking;
private bool _disposed;
@@ -99,6 +101,7 @@ namespace Ryujinx.Memory.Tracking
/// <param name="bitmap">The bitmap the dirty flag for this handle is stored in</param>
/// <param name="bit">The bit index representing the dirty flag for this handle</param>
/// <param name="id">Handle ID</param>
/// <param name="flags">Region flags</param>
/// <param name="mapped">True if the region handle starts mapped</param>
internal RegionHandle(
MemoryTracking tracking,
@@ -109,6 +112,7 @@ namespace Ryujinx.Memory.Tracking
ConcurrentBitmap bitmap,
int bit,
int id,
RegionFlags flags,
bool mapped = true)
{
Bitmap = bitmap;
@@ -128,11 +132,12 @@ namespace Ryujinx.Memory.Tracking
RealEndAddress = realAddress + realSize;
_tracking = tracking;
_regions = tracking.GetVirtualRegionsForHandle(address, size);
foreach (var region in _regions)
{
region.Handles.Add(this);
}
_regions = tracking.GetVirtualRegionsForHandle(address, size, false);
_guestRegions = GetGuestRegions(tracking, address, size, flags);
_allRegions = new List<VirtualRegion>(_regions.Count + _guestRegions.Count);
InitializeRegions();
}
/// <summary>
@@ -145,8 +150,9 @@ namespace Ryujinx.Memory.Tracking
/// <param name="realAddress">The real, unaligned address of the handle</param>
/// <param name="realSize">The real, unaligned size of the handle</param>
/// <param name="id">Handle ID</param>
/// <param name="flags">Region flags</param>
/// <param name="mapped">True if the region handle starts mapped</param>
internal RegionHandle(MemoryTracking tracking, ulong address, ulong size, ulong realAddress, ulong realSize, int id, bool mapped = true)
internal RegionHandle(MemoryTracking tracking, ulong address, ulong size, ulong realAddress, ulong realSize, int id, RegionFlags flags, bool mapped = true)
{
Bitmap = new ConcurrentBitmap(1, mapped);
@@ -163,8 +169,37 @@ namespace Ryujinx.Memory.Tracking
RealEndAddress = realAddress + realSize;
_tracking = tracking;
_regions = tracking.GetVirtualRegionsForHandle(address, size);
foreach (var region in _regions)
_regions = tracking.GetVirtualRegionsForHandle(address, size, false);
_guestRegions = GetGuestRegions(tracking, address, size, flags);
_allRegions = new List<VirtualRegion>(_regions.Count + _guestRegions.Count);
InitializeRegions();
}
private List<VirtualRegion> GetGuestRegions(MemoryTracking tracking, ulong address, ulong size, RegionFlags flags)
{
ulong guestAddress;
ulong guestSize;
if (flags.HasFlag(RegionFlags.UnalignedAccess))
{
(guestAddress, guestSize) = tracking.GetUnalignedSafeRegion(address, size);
}
else
{
(guestAddress, guestSize) = (address, size);
}
return tracking.GetVirtualRegionsForHandle(guestAddress, guestSize, true);
}
private void InitializeRegions()
{
_allRegions.AddRange(_regions);
_allRegions.AddRange(_guestRegions);
foreach (var region in _allRegions)
{
region.Handles.Add(this);
}
@@ -321,7 +356,7 @@ namespace Ryujinx.Memory.Tracking
lock (_tracking.TrackingLock)
{
foreach (VirtualRegion region in _regions)
foreach (VirtualRegion region in _allRegions)
{
protectionChanged |= region.UpdateProtection();
}
@@ -379,7 +414,7 @@ namespace Ryujinx.Memory.Tracking
{
lock (_tracking.TrackingLock)
{
foreach (VirtualRegion region in _regions)
foreach (VirtualRegion region in _allRegions)
{
region.UpdateProtection();
}
@@ -414,7 +449,16 @@ namespace Ryujinx.Memory.Tracking
/// <param name="region">Virtual region to add as a child</param>
internal void AddChild(VirtualRegion region)
{
_regions.Add(region);
if (region.Guest)
{
_guestRegions.Add(region);
}
else
{
_regions.Add(region);
}
_allRegions.Add(region);
}
/// <summary>
@@ -469,7 +513,7 @@ namespace Ryujinx.Memory.Tracking
lock (_tracking.TrackingLock)
{
foreach (VirtualRegion region in _regions)
foreach (VirtualRegion region in _allRegions)
{
region.RemoveHandle(this);
}